chore: add github ci

Reviewed-on: #1

.github/workflows/android.yml

@@ -0,0 +1,46 @@
+name: Build and Release
+
+on:
+  pull_request:
+    branches: [ "master" ]
+  workflow_dispatch:
+    inputs:
+      build_type:
+        description: 'Select build type'
+        required: true
+        default: 'release'
+        type: choice
+        options:
+          - release
+          - alpha
+          - beta
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      BUILD_TYPE: ${{ github.event.inputs.build_type || 'release' }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+          cache: gradle
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build APK
+        run: ./gradlew :composeApp:assemble${{ env.BUILD_TYPE }}
+
+      - name: Gitea Release
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: "composeApp/build/outputs/apk/${{ env.BUILD_TYPE }}/*.apk"
+          server_url: "https://git.reya.su/"
+          repository: "reya/coop-mobile"
+          token: ${{ secrets.GITEA_TOKEN }}

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,39 +1,16 @@
-This is a Kotlin Multiplatform project targeting Android, iOS.
+Coop is a simple, fast, and reliable nostr client for secure messaging across all platforms.
 
-* [/composeApp](./composeApp/src) is for code that will be shared across your Compose Multiplatform applications.
-  It contains several subfolders:
-  - [commonMain](./composeApp/src/commonMain/kotlin) is for code that’s common for all targets.
-  - Other folders are for Kotlin code that will be compiled for only the platform indicated in the folder name.
-    For example, if you want to use Apple’s CoreCrypto for the iOS part of your Kotlin app,
-    the [iosMain](./composeApp/src/iosMain/kotlin) folder would be the right place for such calls.
-    Similarly, if you want to edit the Desktop (JVM) specific part, the [jvmMain](./composeApp/src/jvmMain/kotlin)
-    folder is the appropriate location.
+### License
 
-* [/iosApp](./iosApp/iosApp) contains iOS applications. Even if you’re sharing your UI with Compose Multiplatform,
-  you need this entry point for your iOS app. This is also where you should add SwiftUI code for your project.
+Copyright (C) 2026 Ren Amamiya & other Coop contributors
 
-* [/shared](./shared/src) is for the code that will be shared between all targets in the project.
-  The most important subfolder is [commonMain](./shared/src/commonMain/kotlin). If preferred, you
-  can add code to the platform-specific folders here too.
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU
+General Public License as published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
 
-### Build and Run Android Application
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
 
-To build and run the development version of the Android app, use the run configuration from the run widget
-in your IDE’s toolbar or build it directly from the terminal:
-- on macOS/Linux
-  ```shell
-  ./gradlew :composeApp:assembleDebug
-  ```
-- on Windows
-  ```shell
-  .\gradlew.bat :composeApp:assembleDebug
-  ```
-
-### Build and Run iOS Application
-
-To build and run the development version of the iOS app, use the run configuration from the run widget
-in your IDE’s toolbar or open the [/iosApp](./iosApp) directory in Xcode and run it from there.
-
----
-
-Learn more about [Kotlin Multiplatform](https://www.jetbrains.com/help/kotlin-multiplatform-dev/get-started.html)…
+You should have received a copy of the GNU General Public License along with this program. If not,
+see https://www.gnu.org/licenses/.

composeApp/build.gradle.kts

@@ -1,11 +1,12 @@
-import org.jetbrains.compose.desktop.application.dsl.TargetFormat
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import java.util.Properties
 
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidApplication)
     alias(libs.plugins.composeMultiplatform)
     alias(libs.plugins.composeCompiler)
+    kotlin("plugin.serialization") version libs.versions.kotlin.get()
 }
 
 kotlin {
@@ -19,6 +20,16 @@ kotlin {
         androidMain.dependencies {
             implementation(libs.compose.uiToolingPreview)
             implementation(libs.androidx.activity.compose)
+            implementation("androidx.navigation:navigation-compose:2.8.8")
+            implementation("androidx.datastore:datastore-preferences:1.2.1")
+            implementation("androidx.datastore:datastore-preferences-core:1.2.1")
+            implementation("org.jetbrains.compose.material3:material3:1.11.0-alpha07")
+            implementation("io.coil-kt.coil3:coil-compose:3.4.0")
+            implementation("io.coil-kt.coil3:coil-network-okhttp:3.4.0")
+            implementation("su.reya:nostr-sdk-kmp:0.2.3")
+            implementation("io.github.kalinjul.easyqrscan:scanner:0.7.0")
+            implementation("androidx.lifecycle:lifecycle-process:2.8.0")
+            implementation("io.github.alexzhirkevich:qrose:1.1.2")
         }
         commonMain.dependencies {
             implementation(libs.compose.runtime)
@@ -37,16 +48,31 @@ kotlin {
     }
 }
 
+val localProperties = Properties().apply {
+    val file = rootProject.file("local.properties")
+    if (file.exists()) {
+        load(file.inputStream())
+    }
+}
+
 android {
     namespace = "su.reya.coop"
     compileSdk = libs.versions.android.compileSdk.get().toInt()
 
+    signingConfigs {
+        create("release") {
+            storeFile = localProperties.getProperty("keystore.path")?.let { file(it) }
+            storePassword = localProperties.getProperty("keystore.password")
+            keyAlias = localProperties.getProperty("key.alias")
+            keyPassword = localProperties.getProperty("key.password")
+        }
+    }
     defaultConfig {
         applicationId = "su.reya.coop"
         minSdk = libs.versions.android.minSdk.get().toInt()
         targetSdk = libs.versions.android.targetSdk.get().toInt()
         versionCode = 1
-        versionName = "1.0"
+        versionName = "0.1.0"
     }
     packaging {
         resources {
@@ -55,7 +81,26 @@ android {
     }
     buildTypes {
         getByName("release") {
-            isMinifyEnabled = false
+            isMinifyEnabled = true
+            isShrinkResources = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt")
+            )
+            signingConfig = signingConfigs.getByName("release")
+        }
+        create("beta") {
+            initWith(getByName("release"))
+            applicationIdSuffix = ".beta"
+            versionNameSuffix = "-beta"
+            manifestPlaceholders["appName"] = "Coop Beta"
+            signingConfig = signingConfigs.getByName("release")
+        }
+        create("alpha") {
+            initWith(getByName("release"))
+            applicationIdSuffix = ".alpha"
+            versionNameSuffix = "-alpha"
+            manifestPlaceholders["appName"] = "Coop Alpha"
+            signingConfig = signingConfigs.getByName("release")
         }
     }
     compileOptions {

composeApp/src/androidMain/AndroidManifest.xml

@@ -1,6 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature
+        android:name="android.hardware.camera.autofocus"
+        android:required="false" />
+
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -9,14 +19,18 @@
         android:supportsRtl="true"
         android:theme="@android:style/Theme.Material.Light.NoActionBar">
         <activity
-            android:exported="true"
-            android:name=".MainActivity">
+            android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <service
+            android:name=".NostrForegroundService"
+            android:enabled="true"
+            android:exported="false"
+            android:foregroundServiceType="dataSync" />
     </application>
 
 </manifest>

composeApp/src/androidMain/composeResources/drawable/coop.xml

@@ -0,0 +1,32 @@
+<!--
+  ~ Copyright (C) 2026 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="750dp"
+    android:height="750dp"
+    android:viewportWidth="750"
+    android:viewportHeight="750">
+  <path
+      android:pathData="M353.02,681C488.9,681 599.05,570.85 599.05,434.98C599.05,422.63 589.03,412.61 576.68,412.61H129.37C117.01,412.61 107,422.63 107,434.98C107,570.85 217.15,681 353.02,681Z"
+      android:fillColor="#000000"
+      android:fillType="evenOdd"/>
+  <path
+      android:pathData="M461.72,151.67L317.71,156.11C317.71,156.11 307.55,142.16 308.32,132.29C309.29,119.83 317.72,109.73 328.88,105.93C328.22,103.04 327.53,100.13 327.77,97.03C329.07,80.3 343.74,67.8 360.51,69.09C370.4,69.85 378.36,75.51 383.33,83.23C389.44,76.36 398.21,72.01 408.1,72.77C423.68,73.97 435.15,86.83 435.69,102.04C437.83,101.74 439.89,101.08 442.14,101.26C458.92,102.55 471.44,117.15 470.14,133.88C469.51,142.02 461.72,151.67 461.72,151.67Z"
+      android:fillColor="#000000"/>
+  <path
+      android:pathData="M150.95,389.09C150.95,253.21 261.1,143.06 396.98,143.06C532.84,143.06 643,253.21 643,389.09C643,401.44 632.98,411.45 620.63,411.45H173.32C160.96,411.45 150.95,401.44 150.95,389.09ZM505.67,259.28C504.32,258.9 502.97,258.71 501.6,258.71C500.23,258.71 498.88,258.9 497.54,259.28C496.19,259.66 494.89,260.23 493.62,260.98C492.36,261.73 491.16,262.65 490.02,263.74C488.88,264.83 487.83,266.07 486.86,267.45C485.89,268.84 485.03,270.35 484.27,271.98C483.51,273.61 482.87,275.33 482.34,277.14C481.82,278.95 481.43,280.82 481.16,282.74C480.89,284.66 480.76,286.6 480.76,288.57C480.76,290.53 480.89,292.47 481.16,294.39C481.43,296.31 481.82,298.17 482.34,299.99C482.87,301.8 483.51,303.52 484.27,305.15C485.03,306.78 485.89,308.29 486.86,309.67C487.83,311.06 488.88,312.3 490.02,313.39C491.16,314.48 492.36,315.4 493.62,316.14C494.89,316.89 496.19,317.46 497.54,317.85C498.88,318.23 500.23,318.42 501.6,318.42C502.97,318.42 504.32,318.23 505.67,317.85C507.01,317.46 508.31,316.89 509.57,316.14C510.84,315.4 512.05,314.48 513.18,313.39C514.32,312.3 515.38,311.06 516.34,309.67C517.31,308.29 518.17,306.78 518.93,305.15C519.7,303.52 520.33,301.8 520.86,299.99C521.38,298.17 521.78,296.31 522.04,294.39C522.31,292.47 522.45,290.53 522.45,288.57C522.45,286.6 522.31,284.66 522.04,282.74C521.78,280.82 521.38,278.95 520.86,277.14C520.33,275.33 519.7,273.61 518.93,271.98C518.17,270.35 517.31,268.84 516.34,267.45C515.38,266.07 514.32,264.83 513.18,263.74C512.05,262.65 510.84,261.73 509.57,260.98C508.31,260.23 507.01,259.66 505.67,259.28Z"
+      android:fillColor="#000000"
+      android:fillType="evenOdd"/>
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_arrow_back.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M313,520L537,744L480,800L160,480L480,160L537,216L313,440L800,440L800,520L313,520Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_arrow_next.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M647,520L160,520L160,440L647,440L423,216L480,160L800,480L480,800L423,744L647,520Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_avatar.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M234,684Q285,645 348,622.5Q411,600 480,600Q549,600 612,622.5Q675,645 726,684Q761,643 780.5,591Q800,539 800,480Q800,347 706.5,253.5Q613,160 480,160Q347,160 253.5,253.5Q160,347 160,480Q160,539 179.5,591Q199,643 234,684ZM380.5,479.5Q340,439 340,380Q340,321 380.5,280.5Q421,240 480,240Q539,240 579.5,280.5Q620,321 620,380Q620,439 579.5,479.5Q539,520 480,520Q421,520 380.5,479.5ZM480,880Q397,880 324,848.5Q251,817 197,763Q143,709 111.5,636Q80,563 80,480Q80,397 111.5,324Q143,251 197,197Q251,143 324,111.5Q397,80 480,80Q563,80 636,111.5Q709,143 763,197Q817,251 848.5,324Q880,397 880,480Q880,563 848.5,636Q817,709 763,763Q709,817 636,848.5Q563,880 480,880ZM580,784.5Q627,769 666,740Q627,711 580,695.5Q533,680 480,680Q427,680 380,695.5Q333,711 294,740Q333,769 380,784.5Q427,800 480,800Q533,800 580,784.5ZM523,423Q540,406 540,380Q540,354 523,337Q506,320 480,320Q454,320 437,337Q420,354 420,380Q420,406 437,423Q454,440 480,440Q506,440 523,423ZM480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380Q480,380 480,380ZM480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Q480,740 480,740Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_close.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M256,760L200,704L424,480L200,256L256,200L480,424L704,200L760,256L536,480L760,704L704,760L480,536L256,760Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_close_small.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M336,680L280,624L424,480L280,337L336,281L480,425L623,281L679,337L535,480L679,624L623,680L480,536L336,680Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_new_chat.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M120,800L120,200Q120,167 143.5,143.5Q167,120 200,120L680,120Q713,120 736.5,143.5Q760,167 760,200L760,403Q750,401 740,400.5Q730,400 720,400Q710,400 700,400.5Q690,401 680,403L680,200Q680,200 680,200Q680,200 680,200L200,200Q200,200 200,200Q200,200 200,200L200,600L483,600Q481,610 480.5,620Q480,630 480,640Q480,650 480.5,660Q481,670 483,680L240,680L120,800ZM280,360L600,360L600,280L280,280L280,360ZM280,520L480,520L480,440L280,440L280,520ZM680,800L680,680L560,680L560,600L680,600L680,480L760,480L760,600L880,600L880,680L760,680L760,800L680,800ZM200,600L200,600L200,200Q200,200 200,200Q200,200 200,200L200,200Q200,200 200,200Q200,200 200,200L200,403Q200,453 200,501.5Q200,550 200,600Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_plus.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M440,520L200,520L200,440L440,440L440,200L520,200L520,440L760,440L760,520L520,520L520,760L440,760L440,520Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_qr.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M520,840L520,760L600,760L600,840L520,840ZM440,760L440,560L520,560L520,760L440,760ZM760,640L760,480L840,480L840,640L760,640ZM680,480L680,400L760,400L760,480L680,480ZM200,560L200,480L280,480L280,560L200,560ZM120,480L120,400L200,400L200,480L120,480ZM480,200L480,120L560,120L560,200L480,200ZM180,300L300,300L300,180L180,180L180,300ZM120,360L120,120L360,120L360,360L120,360ZM180,780L300,780L300,660L180,660L180,780ZM120,840L120,600L360,600L360,840L120,840ZM660,300L780,300L780,180L660,180L660,300ZM600,360L600,120L840,120L840,360L600,360ZM680,840L680,720L600,720L600,640L760,640L760,760L840,760L840,840L680,840ZM520,560L520,480L680,480L680,560L520,560ZM360,560L360,480L280,480L280,400L520,400L520,480L440,480L440,560L360,560ZM400,360L400,200L480,200L480,280L560,280L560,360L400,360ZM210,270L210,210L270,210L270,270L210,270ZM210,750L210,690L270,690L270,750L210,750ZM690,270L690,210L750,210L750,270L690,270Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_scanner.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M80,280L80,80L280,80L280,160L160,160L160,280L80,280ZM80,880L80,680L160,680L160,800L280,800L280,880L80,880ZM680,880L680,800L800,800L800,680L880,680L880,880L680,880ZM800,280L800,160L680,160L680,80L880,80L880,280L800,280ZM700,700L760,700L760,760L700,760L700,700ZM700,580L760,580L760,640L700,640L700,580ZM640,640L700,640L700,700L640,700L640,640ZM580,700L640,700L640,760L580,760L580,700ZM520,640L580,640L580,700L520,700L520,640ZM640,520L700,520L700,580L640,580L640,520ZM580,580L640,580L640,640L580,640L580,580ZM520,520L580,520L580,580L520,580L520,520ZM760,200L760,440L520,440L520,200L760,200ZM440,520L440,760L200,760L200,520L440,520ZM440,200L440,440L200,440L200,200L440,200ZM380,700L380,580L260,580L260,700L380,700ZM380,380L380,260L260,260L260,380L380,380ZM700,380L700,260L580,260L580,380L700,380Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_search.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M784,840L532,588Q502,612 463,626Q424,640 380,640Q271,640 195.5,564.5Q120,489 120,380Q120,271 195.5,195.5Q271,120 380,120Q489,120 564.5,195.5Q640,271 640,380Q640,424 626,463Q612,502 588,532L840,784L784,840ZM380,560Q455,560 507.5,507.5Q560,455 560,380Q560,305 507.5,252.5Q455,200 380,200Q305,200 252.5,252.5Q200,305 200,380Q200,455 252.5,507.5Q305,560 380,560Z" />
+</vector>

composeApp/src/androidMain/composeResources/drawable/ic_send.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+    <path
+        android:fillColor="#000000"
+        android:pathData="M440,800L440,313L216,537L160,480L480,160L800,480L744,537L520,313L520,800L440,800Z" />
+</vector>

composeApp/src/androidMain/kotlin/su/reya/coop/App.kt

@@ -1,47 +1,252 @@
 package su.reya.coop
 
-import androidx.compose.animation.AnimatedVisibility
-import androidx.compose.foundation.Image
-import androidx.compose.foundation.background
+import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.safeContentPadding
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.MaterialExpressiveTheme
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Text
-import androidx.compose.runtime.*
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.expressiveLightColorScheme
+import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.staticCompositionLocalOf
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
-import org.jetbrains.compose.resources.painterResource
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import androidx.navigation.toRoute
+import kotlinx.coroutines.launch
+import su.reya.coop.coop.storage.SecretStore
+import su.reya.coop.screens.ChatScreen
+import su.reya.coop.screens.HomeScreen
+import su.reya.coop.screens.ImportScreen
+import su.reya.coop.screens.MyQrScreen
+import su.reya.coop.screens.NewChatScreen
+import su.reya.coop.screens.NewIdentityScreen
+import su.reya.coop.screens.OnboardingScreen
+import su.reya.coop.screens.RelayScreen
+import su.reya.coop.screens.ScanScreen
 
-import coop.composeapp.generated.resources.Res
-import coop.composeapp.generated.resources.compose_multiplatform
+val LocalNostrViewModel = staticCompositionLocalOf<NostrViewModel> {
+    error("No NostrViewModel provided")
+}
 
+val LocalSnackbarHostState = staticCompositionLocalOf<SnackbarHostState> {
+    error("No SnackbarHostState provided")
+}
+
+val LocalNavController = staticCompositionLocalOf<NavController> {
+    error("No NavController provided")
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
 @Composable
-@Preview
 fun App() {
-    MaterialTheme {
-        var showContent by remember { mutableStateOf(false) }
-        Column(
-            modifier = Modifier
-                .background(MaterialTheme.colorScheme.primaryContainer)
-                .safeContentPadding()
-                .fillMaxSize(),
-            horizontalAlignment = Alignment.CenterHorizontally,
+    val context = LocalContext.current
+    val navController = rememberNavController()
+    val scope = rememberCoroutineScope()
+    val darkMode = isSystemInDarkTheme()
+
+    // Snackbar
+    val snackbarHostState = remember { SnackbarHostState() }
+
+    // Initialize Nostr View Model and Secret Store
+    val secretStore = remember { SecretStore(context) }
+    val viewModel: NostrViewModel = viewModel { NostrViewModel(NostrManager.instance, secretStore) }
+
+    // Enabled the dynamic color scheme
+    val colorScheme = when {
+        android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S -> {
+            if (darkMode) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+
+        darkMode -> darkColorScheme()
+        else -> expressiveLightColorScheme()
+    }
+
+    LaunchedEffect(Unit) {
+        viewModel.errorEvents.collect { message ->
+            snackbarHostState.showSnackbar(message)
+        }
+    }
+
+    MaterialExpressiveTheme(
+        colorScheme = colorScheme,
+    ) {
+        CompositionLocalProvider(
+            LocalNostrViewModel provides viewModel,
+            LocalSnackbarHostState provides snackbarHostState,
+            LocalNavController provides navController,
         ) {
-            Button(onClick = { showContent = !showContent }) {
-                Text("Click me!")
+            val emptySecret by viewModel.emptySecret.collectAsState(initial = null)
+            val isRelayListEmpty by viewModel.isRelayListEmpty.collectAsState()
+            val sheetState = rememberModalBottomSheetState()
+
+            LaunchedEffect(emptySecret) {
+                // Navigate to the home screen if the secret is already set
+                if (emptySecret == false) {
+                    navController.navigate(Screen.Home) {
+                        popUpTo(Screen.Onboarding) { inclusive = true }
+                    }
+                }
             }
-            AnimatedVisibility(showContent) {
-                val greeting = remember { Greeting().greet() }
-                Column(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalAlignment = Alignment.CenterHorizontally,
+
+            // Show loading screen while initializing
+            if (emptySecret == null) return@CompositionLocalProvider
+
+            // Show the relay setup dialog if the msg relay list is empty
+            if (isRelayListEmpty) {
+                ModalBottomSheet(
+                    onDismissRequest = { viewModel.dismissRelayWarning() },
+                    sheetState = sheetState,
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
                 ) {
-                    Image(painterResource(Res.drawable.compose_multiplatform), null)
-                    Text("Compose: $greeting")
+                    Column(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .fillMaxHeight(0.5f)
+                            .padding(24.dp),
+                        horizontalAlignment = Alignment.CenterHorizontally,
+                    ) {
+                        Text(
+                            text = "Messaging Relays are required",
+                            style = MaterialTheme.typography.headlineSmallEmphasized.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            textAlign = TextAlign.Center,
+                            color = MaterialTheme.colorScheme.primary,
+                        )
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = "Coop cannot found your messaging relays. To send and receive messages on Coop, you need to set up at least one messaging relay.",
+                            style = MaterialTheme.typography.bodyLarge
+                        )
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = "Please click the button below to continue with the default set of relays. You can always change them later in the settings.",
+                            style = MaterialTheme.typography.bodyLarge.copy(
+                                fontStyle = FontStyle.Italic,
+                            ),
+                        )
+                        Spacer(modifier = Modifier.weight(1f))
+                        Button(
+                            onClick = {
+                                scope.launch {
+                                    viewModel.useDefaultMsgRelayList()
+                                    sheetState.hide()
+                                }
+                            },
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(ButtonDefaults.MediumContainerHeight),
+                        ) {
+                            Text(
+                                text = "Continue",
+                                style = MaterialTheme.typography.titleMediumEmphasized,
+                            )
+                        }
+                    }
+                }
+            }
+
+            NavHost(
+                navController = navController,
+                startDestination = if (emptySecret == false) Screen.Home else Screen.Onboarding
+            ) {
+                composable<Screen.Onboarding> { backStackEntry ->
+                    OnboardingScreen(
+                        onOpenImport = { navController.navigate(Screen.Import) },
+                        onOpenNew = { navController.navigate(Screen.NewIdentity) }
+                    )
+                }
+                composable<Screen.Import> { backStackEntry ->
+                    val isCreating by viewModel.isCreating.collectAsState()
+
+                    ImportScreen(
+                        isLoading = isCreating,
+                        onBack = { navController.popBackStack() },
+                        onSave = { secret ->
+                            viewModel.importIdentity(secret)
+                        }
+                    )
+                }
+                composable<Screen.NewIdentity> { backStackEntry ->
+                    val isCreating by viewModel.isCreating.collectAsState()
+
+                    NewIdentityScreen(
+                        isLoading = isCreating,
+                        onBack = { navController.popBackStack() },
+                        onSave = { name, bio, uri ->
+                            val contentType = uri?.let { context.contentResolver.getType(it) }
+                            val picture = uri?.let {
+                                context.contentResolver.openInputStream(it)?.use { input ->
+                                    input.readBytes()
+                                }
+                            }
+                            viewModel.createIdentity(name, bio, picture, contentType)
+                        }
+                    )
+                }
+                composable<Screen.Home> { backStackEntry ->
+                    HomeScreen(
+                        onOpenChat = { id -> navController.navigate(Screen.Chat(id)) },
+                        onNewChat = { navController.navigate(Screen.NewChat) }
+                    )
+                }
+                composable<Screen.Chat> { backStackEntry ->
+                    val chat: Screen.Chat = backStackEntry.toRoute()
+                    ChatScreen(
+                        id = chat.id,
+                        onBack = { navController.popBackStack() },
+                    )
+                }
+                composable<Screen.NewChat> { backStackEntry ->
+                    NewChatScreen(
+                        onBack = { navController.popBackStack() },
+                    )
+                }
+                composable<Screen.Scan> { backStackEntry ->
+                    ScanScreen(
+                        onBack = { navController.popBackStack() },
+                    )
+                }
+                composable<Screen.MyQr> { backStackEntry ->
+                    MyQrScreen(
+                        onBack = { navController.popBackStack() },
+                    )
+                }
+                composable<Screen.Relay> { backStackEntry ->
+                    RelayScreen(
+                        onBack = { navController.popBackStack() },
+                    )
                 }
             }
         }

composeApp/src/androidMain/kotlin/su/reya/coop/MainActivity.kt

@@ -1,25 +1,27 @@
 package su.reya.coop
 
+import android.content.Intent
+import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.tooling.preview.Preview
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         enableEdgeToEdge()
         super.onCreate(savedInstanceState)
 
+        val intent = Intent(this, NostrForegroundService::class.java)
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            startForegroundService(intent)
+        } else {
+            startService(intent)
+        }
+
         setContent {
             App()
         }
     }
 }
-
-@Preview
-@Composable
-fun AppAndroidPreview() {
-    App()
-}

composeApp/src/androidMain/kotlin/su/reya/coop/Navigation.kt

@@ -0,0 +1,32 @@
+package su.reya.coop
+
+import kotlinx.serialization.Serializable
+
+sealed interface Screen {
+    @Serializable
+    data object Home : Screen
+
+    @Serializable
+    data class Chat(val id: Long) : Screen
+
+    @Serializable
+    data object NewChat : Screen
+
+    @Serializable
+    data object Onboarding : Screen
+
+    @Serializable
+    data object Import : Screen
+
+    @Serializable
+    data object NewIdentity : Screen
+
+    @Serializable
+    data object Scan : Screen
+
+    @Serializable
+    data object MyQr : Screen
+
+    @Serializable
+    data object Relay : Screen
+}

composeApp/src/androidMain/kotlin/su/reya/coop/NostrForegroundService.kt

@@ -0,0 +1,93 @@
+package su.reya.coop
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Intent
+import android.os.Build
+import android.os.IBinder
+import androidx.annotation.RequiresApi
+import androidx.core.app.NotificationCompat
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.ProcessLifecycleOwner
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
+import java.io.File
+
+class NostrForegroundService : Service() {
+    private val serviceScope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+    private val nostr = NostrManager.instance
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    private fun isUserInApp(): Boolean {
+        return ProcessLifecycleOwner.get().lifecycle.currentState.isAtLeast(Lifecycle.State.STARTED)
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        createNotificationChannel()
+        val notification = createNotification("Connecting to Nostr...")
+        startForeground(1, notification)
+
+        serviceScope.launch {
+            try {
+                val dbDir = File(filesDir, "nostr")
+                dbDir.mkdirs()
+                // Initialize Nostr client
+                nostr.init(dbDir.absolutePath)
+                // Connect to bootstrap relays
+                nostr.connectBootstrapRelays()
+                // Handle notifications
+                nostr.handleLiteNotifications { event ->
+                    if (!isUserInApp()) {
+                        showNewMessageNotification(event.content())
+                    }
+                }
+            } catch (e: Exception) {
+                println("Failed to start Nostr in background: ${e.message}")
+            }
+        }
+
+        return START_STICKY
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun createNotificationChannel() {
+        val channel = NotificationChannel(
+            "nostr_service",
+            "Nostr Background Service",
+            NotificationManager.IMPORTANCE_HIGH
+        )
+        val manager = getSystemService(NotificationManager::class.java)
+        manager?.createNotificationChannel(channel)
+    }
+
+    private fun createNotification(content: String): Notification {
+        return NotificationCompat.Builder(this, "nostr_service")
+            .setContentTitle("Coop")
+            .setContentText(content)
+            .setSmallIcon(android.R.drawable.ic_menu_send)
+            .setOngoing(true)
+            .build()
+    }
+
+    private fun showNewMessageNotification(message: String) {
+        val notification = NotificationCompat.Builder(this, "nostr_service")
+            .setContentTitle("New Message")
+            .setContentText(message)
+            .setAutoCancel(true)
+            .build()
+        val manager = getSystemService(NotificationManager::class.java)
+        manager?.notify(System.currentTimeMillis().toInt(), notification)
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        serviceScope.cancel()
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ChatScreen.kt

@@ -0,0 +1,349 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.IntrinsicSize
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.widthIn
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.FilledTonalIconButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.IconButtonDefaults
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.material3.TextFieldDefaults
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_send
+import kotlinx.coroutines.flow.first
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.UnsignedEvent
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.formatAsGroupHeader
+import su.reya.coop.roomId
+import su.reya.coop.shared.Avatar
+import su.reya.coop.shared.displayNameFlow
+import su.reya.coop.shared.pictureFlow
+import su.reya.coop.short
+
+@Composable
+fun ChatScreen(
+    id: Long,
+    onBack: () -> Unit,
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val viewModel = LocalNostrViewModel.current
+
+    val room = viewModel.getChatRoom(id)
+    val listState = rememberLazyListState()
+
+    val displayName by remember(room) { room.displayNameFlow(viewModel) }.collectAsState("Loading...")
+    val picture by remember(room) { room.pictureFlow(viewModel) }.collectAsState(null)
+
+    var text by remember { mutableStateOf("") }
+    var loading by remember { mutableStateOf(true) }
+
+    val messages = remember { mutableStateListOf<UnsignedEvent>() }
+    val groupedMessages = remember(messages.toList()) {
+        messages.groupBy { it.createdAt().formatAsGroupHeader() }
+    }
+
+    fun setLoading(value: Boolean) {
+        loading = value
+    }
+
+    LaunchedEffect(id) {
+        // Start loading spinner
+        setLoading(true)
+
+        // Get messages
+        val initialMessages = viewModel.getChatRoomMessages(id)
+        messages.clear()
+        messages.addAll(initialMessages)
+
+        // Get msg relays for each member
+        val results = viewModel.chatRoomConnect(id)
+        results.forEach { (member, relays) ->
+            if (relays.isNotEmpty()) {
+                val metadata = viewModel.getMetadata(member).first { it != null }
+                val profile = metadata?.asRecord()
+                val name = profile?.displayName ?: profile?.name ?: member.short()
+
+                snackbarHostState.showSnackbar("Connected to messaging relays for $name")
+            }
+        }
+
+        // Stop loading spinner
+        setLoading(false)
+
+        // Handle new messages
+        viewModel.newEvents.collect { event ->
+            if (event.roomId() == id) {
+                if (event.id() !in messages.map { it.id() }) {
+                    messages.add(0, event)
+                }
+            }
+        }
+    }
+
+    LaunchedEffect(messages.size) {
+        if (messages.isNotEmpty()) {
+            listState.animateScrollToItem(0)
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Row(verticalAlignment = Alignment.CenterVertically) {
+                        if (loading) {
+                            LoadingIndicator(
+                                modifier = Modifier.size(32.dp),
+                            )
+                        } else {
+                            Avatar(
+                                picture = picture,
+                                description = displayName,
+                                size = 32.dp,
+                            )
+                        }
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = displayName,
+                            style = MaterialTheme.typography.titleMediumEmphasized,
+                        )
+                    }
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                )
+            )
+        },
+        content = { innerPadding ->
+            Surface(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(top = innerPadding.calculateTopPadding()),
+                color = MaterialTheme.colorScheme.surface,
+                shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(bottom = innerPadding.calculateBottomPadding())
+                ) {
+                    if (messages.isNotEmpty()) {
+                        LazyColumn(
+                            modifier = Modifier
+                                .weight(1f)
+                                .fillMaxWidth(),
+                            contentPadding = PaddingValues(16.dp),
+                            reverseLayout = true,
+                            state = listState,
+                        ) {
+                            groupedMessages.forEach { (dateHeader, messagesInGroup) ->
+                                items(
+                                    messagesInGroup,
+                                    key = { it.id()?.toBech32()!! }) { event ->
+                                    ChatMessage(event)
+                                }
+                                item {
+                                    DateSeparator(dateHeader)
+                                }
+                            }
+                        }
+                    } else {
+                        Box(
+                            modifier = Modifier
+                                .weight(1f)
+                                .fillMaxWidth(),
+                            contentAlignment = Alignment.Center
+                        ) {
+                            Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                                Text(
+                                    text = "No messages yet",
+                                    style = MaterialTheme.typography.titleLargeEmphasized,
+                                    color = MaterialTheme.colorScheme.onSurface
+                                )
+                                Text(
+                                    text = "Your conversations will appear here.",
+                                    style = MaterialTheme.typography.bodyMedium,
+                                    color = MaterialTheme.colorScheme.outline
+                                )
+                            }
+                        }
+                    }
+                    ChatInput(
+                        value = text,
+                        onValueChange = { text = it },
+                        onSend = {
+                            viewModel.sendMessage(id, text)
+                            text = ""
+                        }
+                    )
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun DateSeparator(date: String) {
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 16.dp),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = date,
+            style = MaterialTheme.typography.labelMedium,
+            color = MaterialTheme.colorScheme.outline
+        )
+    }
+}
+
+@Composable
+fun ChatMessage(
+    rumor: UnsignedEvent
+) {
+    val viewModel = LocalNostrViewModel.current
+    val currentUser = viewModel.currentUser()
+    val isMine = rumor.author() == currentUser
+
+    val bubbleShape = if (isMine) {
+        RoundedCornerShape(topStart = 20.dp, topEnd = 20.dp, bottomStart = 20.dp, bottomEnd = 4.dp)
+    } else {
+        RoundedCornerShape(topStart = 20.dp, topEnd = 20.dp, bottomStart = 4.dp, bottomEnd = 20.dp)
+    }
+
+    val containerColor =
+        if (isMine) MaterialTheme.colorScheme.primaryContainer else MaterialTheme.colorScheme.tertiaryContainer
+
+    val contentColor =
+        if (isMine) MaterialTheme.colorScheme.onPrimaryContainer else MaterialTheme.colorScheme.onTertiaryContainer
+
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(vertical = 4.dp),
+        contentAlignment = if (isMine) Alignment.CenterEnd else Alignment.CenterStart
+    ) {
+        Column(
+            horizontalAlignment = if (isMine) Alignment.End else Alignment.Start
+        ) {
+            Surface(
+                color = containerColor,
+                contentColor = contentColor,
+                shape = bubbleShape,
+                modifier = Modifier
+                    .widthIn(max = 280.dp)
+                    .clickable(
+                        onClick = {
+                            val id = rumor.id()
+                            if (id != null) {
+                                val sent = viewModel.isMessageSent(id)
+                                println("Sent: $sent")
+                            }
+                        }
+                    )
+            ) {
+                Text(
+                    text = rumor.content(),
+                    modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp),
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+        }
+    }
+}
+
+@Composable
+fun ChatInput(
+    value: String,
+    onValueChange: (String) -> Unit,
+    onSend: () -> Unit
+) {
+
+    Surface(modifier = Modifier.fillMaxWidth()) {
+        Row(
+            modifier = Modifier
+                .padding(horizontal = 16.dp, vertical = 8.dp)
+                .height(IntrinsicSize.Min),
+            verticalAlignment = Alignment.Bottom
+        ) {
+            TextField(
+                value = value,
+                onValueChange = onValueChange,
+                placeholder = { Text("Message") },
+                shape = RoundedCornerShape(28.dp),
+                colors = TextFieldDefaults.colors(
+                    focusedIndicatorColor = Color.Transparent,
+                    unfocusedIndicatorColor = Color.Transparent
+                ),
+                modifier = Modifier.weight(1f)
+            )
+            Spacer(modifier = Modifier.size(8.dp))
+            FilledTonalIconButton(
+                onClick = onSend,
+                modifier = Modifier
+                    .fillMaxHeight()
+                    .aspectRatio(1f),
+                colors = IconButtonDefaults.filledTonalIconButtonColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceVariant,
+                    contentColor = MaterialTheme.colorScheme.onSurfaceVariant
+                )
+            ) {
+                Icon(
+                    painter = painterResource(Res.drawable.ic_send),
+                    contentDescription = "Send"
+                )
+            }
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/HomeScreen.kt

@@ -0,0 +1,441 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.ExtendedFloatingActionButton
+import androidx.compose.material3.FilledIconButton
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.ListItem
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.PlainTooltip
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TooltipAnchorPosition
+import androidx.compose.material3.TooltipBox
+import androidx.compose.material3.TooltipDefaults
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.pulltorefresh.PullToRefreshBox
+import androidx.compose.material3.pulltorefresh.PullToRefreshDefaults
+import androidx.compose.material3.pulltorefresh.rememberPullToRefreshState
+import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.compose.material3.rememberTooltipState
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.platform.LocalClipboard
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_new_chat
+import coop.composeapp.generated.resources.ic_qr
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.launch
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavController
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Room
+import su.reya.coop.Screen
+import su.reya.coop.ago
+import su.reya.coop.shared.Avatar
+import su.reya.coop.shared.displayNameFlow
+import su.reya.coop.shared.pictureFlow
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class, ExperimentalMaterial3Api::class)
+@Composable
+fun HomeScreen(
+    onOpenChat: (Long) -> Unit,
+    onNewChat: () -> Unit,
+) {
+    val clipboard = LocalClipboard.current
+    val navController = LocalNavController.current
+    val snackbarHostState = LocalSnackbarHostState.current
+    val viewModel = LocalNostrViewModel.current
+
+    val currentUser = viewModel.currentUser() ?: return
+    val currentUserProfile = viewModel.getMetadata(currentUser) ?: return
+
+    val userProfile by currentUserProfile.collectAsState(initial = null)
+    val chatRooms by viewModel.chatRooms.collectAsState(initial = emptyList())
+    val isPartialProcessedGiftWrap by viewModel.isPartialProcessedGiftWrap.collectAsState(initial = false)
+
+    val scope = rememberCoroutineScope()
+    val sheetState = rememberModalBottomSheetState()
+    val listState = rememberLazyListState()
+    val pullToRefreshState = rememberPullToRefreshState()
+    val expandedFab by remember { derivedStateOf { listState.firstVisibleItemIndex == 0 } }
+    var showBottomSheet by remember { mutableStateOf(false) }
+    var isRefreshing by remember { mutableStateOf(false) }
+
+    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
+    val qrResult by savedStateHandle
+        ?.getStateFlow<String?>("qr_result", null)
+        ?.collectAsState()
+        ?: remember { mutableStateOf(null) }
+
+    LaunchedEffect(Unit) {
+        viewModel.getChatRooms()
+    }
+
+    LaunchedEffect(qrResult) {
+        qrResult?.let { result ->
+            runCatching { PublicKey.parse(result) }
+                .onSuccess { pubkey ->
+                    val roomId = viewModel.createChatRoom(listOf(pubkey))
+                    navController.navigate(Screen.Chat(roomId))
+                }
+                .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+
+            // Clear the nav state
+            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+        }
+    }
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        topBar = {
+            TopAppBar(
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                title = {
+                    Text(
+                        text = "Coop",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                actions = {
+                    // QR Scanner
+                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                    // User
+                    IconButton(onClick = { showBottomSheet = true }) {
+                        Avatar(
+                            picture = userProfile?.asRecord()?.picture,
+                            description = userProfile?.asRecord()?.displayName,
+                            size = 32.dp,
+                        )
+                    }
+                }
+            )
+        },
+        floatingActionButton = {
+            TooltipBox(
+                positionProvider = TooltipDefaults.rememberTooltipPositionProvider(
+                    TooltipAnchorPosition.Above,
+                    spacingBetweenTooltipAndAnchor = 8.dp,
+                ),
+                tooltip = {
+                    if (!expandedFab) {
+                        PlainTooltip { Text("New Chat") }
+                    }
+                },
+                state = rememberTooltipState(),
+            ) {
+                ExtendedFloatingActionButton(
+                    onClick = onNewChat,
+                    expanded = expandedFab,
+                    icon = {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_new_chat),
+                            contentDescription = "New Chat"
+                        )
+                    },
+                    text = { Text("New Chat") },
+                )
+            }
+        },
+        content = { innerPadding ->
+            Surface(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(top = innerPadding.calculateTopPadding()),
+                color = MaterialTheme.colorScheme.surface,
+                shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+            ) {
+                PullToRefreshBox(
+                    modifier = Modifier.fillMaxSize(),
+                    isRefreshing = isRefreshing,
+                    state = pullToRefreshState,
+                    onRefresh = {
+                        scope.launch {
+                            isRefreshing = true
+                            viewModel.refreshChatRooms()
+                            isRefreshing = false
+                        }
+                    },
+                    indicator = {
+                        PullToRefreshDefaults.LoadingIndicator(
+                            state = pullToRefreshState,
+                            isRefreshing = isRefreshing,
+                            modifier = Modifier.align(Alignment.TopCenter),
+                        )
+                    }
+                ) {
+                    if (!isPartialProcessedGiftWrap) {
+                        Box(
+                            modifier = Modifier.fillMaxSize(),
+                            contentAlignment = Alignment.Center
+                        ) {
+                            LoadingIndicator()
+                        }
+                    } else if (chatRooms.isEmpty()) {
+                        Box(
+                            modifier = Modifier.fillMaxSize(),
+                            contentAlignment = Alignment.Center
+                        ) {
+                            Column(
+                                horizontalAlignment = Alignment.CenterHorizontally,
+                                verticalArrangement = Arrangement.spacedBy(4.dp),
+                            ) {
+                                Text(
+                                    text = "No chats yet",
+                                    style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                        fontWeight = FontWeight.SemiBold
+                                    ),
+                                    color = MaterialTheme.colorScheme.onSurface
+                                )
+                                Text(
+                                    text = "Your conversations will appear here.",
+                                    style = MaterialTheme.typography.bodyMedium,
+                                    color = MaterialTheme.colorScheme.outline
+                                )
+                            }
+                        }
+                    } else {
+                        LazyColumn(
+                            state = listState,
+                            modifier = Modifier.fillMaxSize()
+                        ) {
+                            items(chatRooms.toList(), key = { it.id }) { room ->
+                                ChatRoom(
+                                    room = room,
+                                    onClick = { onOpenChat(room.id) }
+                                )
+                            }
+                        }
+                    }
+                }
+
+                if (showBottomSheet) {
+                    ModalBottomSheet(
+                        onDismissRequest = { showBottomSheet = false },
+                        sheetState = sheetState,
+                    ) {
+                        val pubkey = viewModel.currentUser()
+                        val shortPubkey = pubkey?.short() ?: "Not available"
+
+                        val userName =
+                            userProfile?.asRecord()?.displayName
+                                ?: userProfile?.asRecord()?.name
+                                ?: "No name"
+
+                        val dismissAndRun: (suspend () -> Unit) -> Unit = { action ->
+                            scope.launch {
+                                sheetState.hide()
+                                showBottomSheet = false
+                                action()
+                            }
+                        }
+
+                        Column(
+                            modifier = Modifier
+                                .padding(16.dp)
+                                .fillMaxWidth(),
+                        ) {
+                            Column(
+                                modifier = Modifier.fillMaxWidth(),
+                                horizontalAlignment = Alignment.CenterHorizontally,
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .size(84.dp)
+                                        .clip(MaterialShapes.Cookie9Sided.toShape()),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Avatar(
+                                        picture = userProfile?.asRecord()?.picture,
+                                        description = userProfile?.asRecord()?.displayName,
+                                        shape = MaterialShapes.Cookie9Sided.toShape(),
+                                        modifier = Modifier.fillMaxSize()
+                                    )
+                                }
+                                Spacer(modifier = Modifier.size(8.dp))
+                                Box(
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = userName,
+                                        style = MaterialTheme.typography.titleLargeEmphasized,
+                                    )
+                                }
+                                Spacer(modifier = Modifier.size(8.dp))
+                                Row(
+                                    verticalAlignment = Alignment.CenterVertically,
+                                ) {
+                                    OutlinedButton(
+                                        onClick = {
+                                            dismissAndRun { navController.navigate(Screen.MyQr) }
+                                        },
+                                    ) {
+                                        Text(text = shortPubkey)
+                                    }
+                                    FilledIconButton(
+                                        onClick = {
+                                            scope.launch {
+                                                sheetState.hide()
+                                                showBottomSheet = false
+                                                navController.navigate(Screen.MyQr)
+                                            }
+                                        },
+                                        shape = MaterialShapes.Square.toShape()
+                                    ) {
+                                        Icon(
+                                            painter = painterResource(Res.drawable.ic_qr),
+                                            contentDescription = "My QR"
+                                        )
+                                    }
+                                }
+                            }
+                            Spacer(modifier = Modifier.size(16.dp))
+                            BottomMenuList(onDismiss = dismissAndRun)
+                        }
+                    }
+                }
+            }
+        },
+    )
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ChatRoom(room: Room, onClick: () -> Unit) {
+    val viewModel = LocalNostrViewModel.current
+    val displayName by remember(room) { room.displayNameFlow(viewModel) }.collectAsState("Loading...")
+    val picture by remember(room) { room.pictureFlow(viewModel) }.collectAsState(null)
+
+    ListItem(
+        modifier = Modifier.clickable(onClick = onClick),
+        leadingContent = {
+            Avatar(picture = picture, description = displayName)
+        },
+        headlineContent = {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = displayName,
+                    style = MaterialTheme.typography.titleMediumEmphasized,
+                    modifier = Modifier.weight(1f)
+                )
+                Text(
+                    text = room.createdAt.ago(),
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.outline
+                )
+            }
+        },
+        supportingContent = {
+            if (!room.lastMessage.isNullOrBlank()) {
+                Text(
+                    text = room.lastMessage!!,
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+        },
+        colors = ListItemDefaults.colors(
+            containerColor = MaterialTheme.colorScheme.surface
+        )
+    )
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun BottomMenuList(
+    onDismiss: (suspend () -> Unit) -> Unit
+) {
+    val navController = LocalNavController.current
+    val viewModel = LocalNostrViewModel.current
+
+    val defaultMenuList = listOf(
+        "Relay Management" to { navController.navigate(Screen.Relay) },
+        "Spams & Blocks" to { },
+        "Contacts" to { },
+        "Settings" to { }
+    )
+
+    Column(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalAlignment = Alignment.CenterHorizontally,
+    ) {
+        Column(
+            modifier = Modifier.fillMaxWidth(),
+            verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+        ) {
+            defaultMenuList.forEachIndexed { index, (title, action) ->
+                SegmentedListItem(
+                    onClick = { onDismiss { action() } },
+                    shapes = ListItemDefaults.segmentedShapes(
+                        index = index,
+                        count = defaultMenuList.size
+                    ),
+                    content = { Text(text = title) },
+                )
+            }
+        }
+        Spacer(modifier = Modifier.size(16.dp))
+        FilledTonalButton(
+            onClick = { viewModel.logout() },
+            colors = ButtonDefaults.filledTonalButtonColors(
+                containerColor = MaterialTheme.colorScheme.error,
+                contentColor = MaterialTheme.colorScheme.onError
+            )
+        ) {
+            Text(text = "Logout")
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ImportScreen.kt

@@ -0,0 +1,256 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.launch
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.Keys
+import rust.nostr.sdk.NostrConnectUri
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavController
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.Avatar
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ImportScreen(
+    isLoading: Boolean,
+    onBack: () -> Unit,
+    onSave: (secret: String) -> Unit
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navController = LocalNavController.current
+    val viewModel = LocalNostrViewModel.current
+    val scope = rememberCoroutineScope()
+
+    var secret by remember { mutableStateOf("") }
+    var pubkey by remember { mutableStateOf<PublicKey?>(null) }
+    val metadata by remember(pubkey) {
+        if (pubkey != null) {
+            viewModel.getMetadata(pubkey!!)
+        } else {
+            MutableStateFlow(null)
+        }
+    }.collectAsState(null)
+
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.displayName ?: profile?.name ?: pubkey?.short() ?: "Unknown"
+    val picture = profile?.picture
+
+    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
+    val qrResult by savedStateHandle
+        ?.getStateFlow<String?>("qr_result", null)
+        ?.collectAsState()
+        ?: remember { mutableStateOf(null) }
+
+    LaunchedEffect(qrResult) {
+        qrResult?.let { result ->
+            runCatching {
+                if (result.startsWith("nsec")) {
+                    Keys.parse(result)
+                } else if (result.startsWith("bunker://")) {
+                    NostrConnectUri.parse(result)
+                } else {
+                    throw IllegalArgumentException("Invalid secret: $result")
+                }
+            }
+                .onSuccess { it -> secret = result }
+                .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+            // Clear the nav state
+            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Import",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier.fillMaxSize(),
+            ) {
+                Column(
+                    modifier = Modifier
+                        .weight(1f)
+                        .fillMaxWidth()
+                        .padding(top = innerPadding.calculateTopPadding()),
+                    verticalArrangement = Arrangement.Center,
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .size(120.dp)
+                            .clip(MaterialShapes.Pentagon.toShape()),
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Avatar(
+                            picture = picture,
+                            description = "Profile picture",
+                            modifier = Modifier.fillMaxSize(),
+                            shape = MaterialShapes.Pentagon.toShape(),
+                        )
+                    }
+                    Spacer(modifier = Modifier.size(8.dp))
+                    Text(
+                        text = displayName,
+                        textAlign = TextAlign.Center,
+                        style = MaterialTheme.typography.titleLargeEmphasized,
+                    )
+                }
+                Surface(
+                    modifier = Modifier
+                        .weight(1f)
+                        .fillMaxWidth(),
+                    color = MaterialTheme.colorScheme.surface,
+                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+                ) {
+                    Column(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(24.dp)
+                            .verticalScroll(rememberScrollState()),
+                        verticalArrangement = Arrangement.spacedBy(16.dp)
+                    ) {
+                        Text(
+                            text = "Enter your Secret Key or Bunker URI:",
+                            style = MaterialTheme.typography.titleMediumEmphasized.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                        )
+                        BasicTextField(
+                            value = secret,
+                            onValueChange = { secret = it },
+                            modifier = Modifier.fillMaxWidth(),
+                            maxLines = 4,
+                            visualTransformation = PasswordVisualTransformation('*'),
+                            textStyle = MaterialTheme.typography.bodyMediumEmphasized.copy(
+                                color = MaterialTheme.colorScheme.primaryFixed,
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
+                            decorationBox = { innerTextField ->
+                                Box(contentAlignment = Alignment.CenterStart) {
+                                    if (secret.isEmpty()) {
+                                        Text(
+                                            "bunker://",
+                                            style = MaterialTheme.typography.bodyMediumEmphasized.copy(
+                                                fontWeight = FontWeight.SemiBold,
+                                            ),
+                                            color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                alpha = 0.5f
+                                            )
+                                        )
+                                    }
+                                    innerTextField()
+                                }
+                            }
+                        )
+                        Spacer(modifier = Modifier.weight(1f))
+                        Button(
+                            onClick = {
+                                if (pubkey == null) {
+                                    scope.launch {
+                                        viewModel.verifyIdentity(secret).let { pubkey = it }
+                                    }
+                                } else {
+                                    onSave(secret)
+                                }
+                            },
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(ButtonDefaults.MediumContainerHeight),
+                            enabled = secret.isNotBlank() && !isLoading,
+                        ) {
+                            if (isLoading) {
+                                LoadingIndicator()
+                            } else {
+                                Text(
+                                    text = if (pubkey == null) "Verify" else "Continue",
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/MyQrScreen.kt

@@ -0,0 +1,68 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import io.github.alexzhirkevich.qrose.rememberQrCodePainter
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+
+@Composable
+fun MyQrScreen(
+    onBack: () -> Unit
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val viewModel = LocalNostrViewModel.current
+    val currentUser = viewModel.currentUser() ?: return
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "My QR",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding),
+                verticalArrangement = Arrangement.Center,
+                horizontalAlignment = Alignment.CenterHorizontally,
+            ) {
+                Image(
+                    painter = rememberQrCodePainter(currentUser.toBech32()),
+                    contentDescription = "My QR"
+                )
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/NewChatScreen.kt

@@ -0,0 +1,406 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.ExtendedFloatingActionButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.InputChip
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.LocalMinimumInteractiveComponentSize
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.PlainTooltip
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TooltipAnchorPosition
+import androidx.compose.material3.TooltipBox
+import androidx.compose.material3.TooltipDefaults
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.rememberTooltipState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_arrow_next
+import coop.composeapp.generated.resources.ic_close_small
+import coop.composeapp.generated.resources.ic_scanner
+import kotlinx.coroutines.delay
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.PublicKey
+import su.reya.coop.LocalNavController
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+import su.reya.coop.Screen
+import su.reya.coop.shared.Avatar
+import su.reya.coop.short
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun NewChatScreen(
+    onBack: () -> Unit,
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val navController = LocalNavController.current
+    val viewModel = LocalNostrViewModel.current
+
+    val contactList by viewModel.contactList.collectAsState(initial = emptySet())
+    val createGroup = remember { mutableStateOf(false) }
+    val searchResults = remember { mutableStateListOf<PublicKey>() }
+    val selectedReceivers = remember { mutableStateListOf<PublicKey>() }
+    var query by remember { mutableStateOf("") }
+
+    val savedStateHandle = navController.currentBackStackEntry?.savedStateHandle
+    val qrResult by savedStateHandle
+        ?.getStateFlow<String?>("qr_result", null)
+        ?.collectAsState()
+        ?: remember { mutableStateOf(null) }
+
+    LaunchedEffect(query) {
+        if (query.length >= 3) {
+            delay(500) // 500ms debounce
+
+            if (query.startsWith("npub1")) {
+                val pubkey = try {
+                    PublicKey.parse(query)
+                } catch (e: Exception) {
+                    println("Failed to parse npub: ${e.message}")
+                    null
+                }
+                if (pubkey != null) {
+                    selectedReceivers.add(pubkey)
+                }
+            } else if (query.contains("@")) {
+                val pubkey = viewModel.searchByAddress(query)
+                if (pubkey != null) {
+                    selectedReceivers.add(pubkey)
+                }
+            } else {
+                val results = viewModel.searchByNostr(query)
+                searchResults.clear()
+                searchResults.addAll(results)
+            }
+
+            query = ""
+        }
+    }
+
+    LaunchedEffect(qrResult) {
+        qrResult?.let { result ->
+            runCatching { PublicKey.parse(result) }
+                .onSuccess { pubkey -> selectedReceivers.add(pubkey) }
+                .onFailure { e -> println("Failed to parse QR: ${e.message}") }
+            // Clear the nav state
+            navController.currentBackStackEntry?.savedStateHandle?.remove<String>("qr_result")
+        }
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = if (createGroup.value) "New group chat" else "New chat",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(onClick = { navController.navigate(Screen.Scan) }) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_scanner),
+                            contentDescription = "Scanner"
+                        )
+                    }
+                }
+            )
+        },
+        floatingActionButton = {
+            if (selectedReceivers.isNotEmpty()) {
+                TooltipBox(
+                    positionProvider = TooltipDefaults.rememberTooltipPositionProvider(
+                        TooltipAnchorPosition.Above,
+                        spacingBetweenTooltipAndAnchor = 8.dp,
+                    ),
+                    tooltip = {
+                        PlainTooltip { Text("Next") }
+                    },
+                    state = rememberTooltipState(),
+                ) {
+                    ExtendedFloatingActionButton(
+                        onClick = {
+                            val roomId = viewModel.createChatRoom(selectedReceivers.toList())
+                            navController.navigate(Screen.Chat(roomId))
+                        },
+                        expanded = false,
+                        icon = {
+                            Icon(
+                                painter = painterResource(Res.drawable.ic_arrow_next),
+                                contentDescription = "Next"
+                            )
+                        },
+                        text = { Text("Next") },
+                        containerColor = MaterialTheme.colorScheme.tertiary,
+                        contentColor = MaterialTheme.colorScheme.onTertiary,
+                    )
+                }
+            }
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding)
+            ) {
+                Surface(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(16.dp),
+                    shape = RoundedCornerShape(24.dp),
+                    color = MaterialTheme.colorScheme.surface,
+                ) {
+                    Row(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(16.dp),
+                        verticalAlignment = Alignment.Top,
+                    ) {
+                        Text(
+                            text = "To:",
+                            style = MaterialTheme.typography.bodyMedium.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        )
+                        Spacer(modifier = Modifier.size(16.dp))
+                        Column(
+                            modifier = Modifier.weight(1f),
+                            verticalArrangement = Arrangement.spacedBy(8.dp),
+                        ) {
+                            selectedReceivers.forEach { receiver ->
+                                ReceiverChip(
+                                    pubkey = receiver,
+                                    onRemove = { selectedReceivers.remove(receiver) }
+                                )
+                            }
+                            BasicTextField(
+                                value = query,
+                                onValueChange = { query = it },
+                                modifier = Modifier.fillMaxWidth(),
+                                textStyle = MaterialTheme.typography.bodyMedium.copy(
+                                    color = MaterialTheme.colorScheme.onSurface
+                                ),
+                                cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
+                                decorationBox = { innerTextField ->
+                                    Box(contentAlignment = Alignment.CenterStart) {
+                                        if (query.isEmpty()) {
+                                            Text(
+                                                "Type a npub or address",
+                                                style = MaterialTheme.typography.bodyMedium,
+                                                color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                    alpha = 0.5f
+                                                )
+                                            )
+                                        }
+                                        innerTextField()
+                                    }
+                                }
+                            )
+                        }
+                    }
+                }
+                Spacer(modifier = Modifier.size(16.dp))
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp),
+                ) {
+                    if (searchResults.isNotEmpty()) {
+                        ContactList(
+                            items = searchResults,
+                            selectedReceivers = selectedReceivers,
+                            onContactClick = { pubkey ->
+                                val roomId = viewModel.createChatRoom(listOf(pubkey))
+                                navController.navigate(Screen.Chat(roomId))
+                            },
+                        )
+                        Spacer(modifier = Modifier.size(16.dp))
+                    } else {
+                        ContactList(
+                            title = "Contacts",
+                            items = contactList.toList(),
+                            selectedReceivers = selectedReceivers,
+                            onContactClick = { pubkey ->
+                                val roomId = viewModel.createChatRoom(listOf(pubkey))
+                                navController.navigate(Screen.Chat(roomId))
+                            }
+                        )
+                        Spacer(modifier = Modifier.size(16.dp))
+                    }
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun ReceiverChip(
+    pubkey: PublicKey,
+    onRemove: () -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.name ?: profile?.displayName ?: pubkey.short()
+    val picture = profile?.picture
+
+    CompositionLocalProvider(LocalMinimumInteractiveComponentSize provides 0.dp) {
+        InputChip(
+            selected = true,
+            onClick = onRemove,
+            label = {
+                Text(
+                    text = displayName,
+                    style = MaterialTheme.typography.bodyMedium.copy(
+                        fontWeight = FontWeight.SemiBold
+                    )
+                )
+            },
+            avatar = {
+                Avatar(
+                    picture = picture,
+                    description = displayName,
+                    size = 24.dp
+                )
+            },
+            trailingIcon = {
+                Icon(
+                    painter = painterResource(Res.drawable.ic_close_small),
+                    contentDescription = "Close"
+                )
+            },
+            shape = RoundedCornerShape(24.dp),
+        )
+    }
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ContactList(
+    title: String? = null,
+    items: List<PublicKey>,
+    selectedReceivers: SnapshotStateList<PublicKey>,
+    onContactClick: (PublicKey) -> Unit
+) {
+    if (items.isEmpty()) return
+
+    Column(
+        modifier = Modifier.fillMaxWidth(),
+        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+    ) {
+        if (title != null) {
+            Text(
+                text = title,
+                style = MaterialTheme.typography.titleMediumEmphasized,
+            )
+            Spacer(modifier = Modifier.size(8.dp))
+        }
+        items.forEachIndexed { index, item ->
+            ContactListItem(
+                pubkey = item,
+                index = index,
+                total = items.size,
+                isSelected = selectedReceivers.contains(item),
+                onClick = { onContactClick(item) },
+                onLongClick = {
+                    if (!selectedReceivers.contains(item)) {
+                        selectedReceivers.add(item)
+                    }
+                }
+            )
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun ContactListItem(
+    pubkey: PublicKey,
+    index: Int,
+    total: Int = 0,
+    isSelected: Boolean,
+    onClick: () -> Unit,
+    onLongClick: () -> Unit
+) {
+    val viewModel = LocalNostrViewModel.current
+    val metadataFlow = remember(pubkey) { viewModel.getMetadata(pubkey) }
+    val metadata by metadataFlow.collectAsState(initial = null)
+
+    val profile = metadata?.asRecord()
+    val displayName = profile?.name ?: profile?.displayName ?: pubkey.short()
+    val picture = profile?.picture
+
+    SegmentedListItem(
+        selected = isSelected,
+        onClick = onClick,
+        onLongClick = onLongClick,
+        shapes = ListItemDefaults.segmentedShapes(
+            index = index,
+            count = total
+        ),
+        leadingContent = {
+            Avatar(
+                picture = picture,
+                description = displayName,
+                size = 36.dp
+            )
+        },
+        supportingContent = { Text(text = pubkey.short()) },
+        content = {
+            Text(
+                text = displayName,
+                style = MaterialTheme.typography.titleMediumEmphasized,
+            )
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/NewIdentityScreen.kt

@@ -0,0 +1,245 @@
+package su.reya.coop.screens
+
+import android.net.Uri
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.LoadingIndicator
+import androidx.compose.material3.MaterialShapes
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.toShape
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import coil3.compose.AsyncImage
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import coop.composeapp.generated.resources.ic_plus
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalSnackbarHostState
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun NewIdentityScreen(
+    isLoading: Boolean,
+    onBack: () -> Unit,
+    onSave: (name: String, bio: String?, picture: Uri?) -> Unit
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    var name by remember { mutableStateOf("") }
+    var bio by remember { mutableStateOf("") }
+    var picture by remember { mutableStateOf<Uri?>(null) }
+
+    val launcher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.GetContent()
+    ) { uri: Uri? ->
+        picture = uri
+    }
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Create a new identity",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                )
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier.fillMaxSize(),
+            ) {
+                Column(
+                    modifier = Modifier
+                        .weight(1f)
+                        .fillMaxWidth()
+                        .padding(top = innerPadding.calculateTopPadding()),
+                    verticalArrangement = Arrangement.Center,
+                    horizontalAlignment = Alignment.CenterHorizontally
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .size(120.dp)
+                            .clip(MaterialShapes.Pentagon.toShape())
+                            .clickable { launcher.launch("image/*") },
+                        contentAlignment = Alignment.Center
+                    ) {
+                        if (picture != null) {
+                            AsyncImage(
+                                model = picture,
+                                contentDescription = "Profile picture",
+                                modifier = Modifier.fillMaxSize(),
+                                contentScale = ContentScale.Crop
+                            )
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surfaceVariant,
+                                modifier = Modifier.fillMaxSize()
+
+                            ) {
+                                Box(contentAlignment = Alignment.Center) {
+                                    Icon(
+                                        painter = painterResource(Res.drawable.ic_plus),
+                                        contentDescription = "Pick avatar",
+                                        modifier = Modifier.size(48.dp),
+                                        tint = MaterialTheme.colorScheme.onSurfaceVariant
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+                Surface(
+                    modifier = Modifier
+                        .weight(1f)
+                        .fillMaxWidth(),
+                    color = MaterialTheme.colorScheme.surface,
+                    shape = RoundedCornerShape(topStart = 24.dp, topEnd = 24.dp),
+                ) {
+                    Column(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(24.dp)
+                            .verticalScroll(rememberScrollState()),
+                        verticalArrangement = Arrangement.spacedBy(16.dp)
+                    ) {
+                        Text(
+                            text = "What others should call you?",
+                            style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                        )
+                        BasicTextField(
+                            value = name,
+                            onValueChange = { name = it },
+                            modifier = Modifier.fillMaxWidth(),
+                            maxLines = 1,
+                            textStyle = MaterialTheme.typography.headlineLargeEmphasized.copy(
+                                color = MaterialTheme.colorScheme.primaryFixed,
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
+                            decorationBox = { innerTextField ->
+                                Box(contentAlignment = Alignment.CenterStart) {
+                                    if (name.isEmpty()) {
+                                        Text(
+                                            "Alice",
+                                            style = MaterialTheme.typography.headlineLargeEmphasized.copy(
+                                                fontWeight = FontWeight.SemiBold,
+                                            ),
+                                            color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                alpha = 0.5f
+                                            )
+                                        )
+                                    }
+                                    innerTextField()
+                                }
+                            }
+                        )
+                        Spacer(modifier = Modifier.size(8.dp))
+                        Text(
+                            text = "Your bio (optional)",
+                            style = MaterialTheme.typography.titleLargeEmphasized.copy(
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                        )
+                        BasicTextField(
+                            value = bio,
+                            onValueChange = { bio = it },
+                            modifier = Modifier.fillMaxWidth(),
+                            maxLines = 3,
+                            textStyle = MaterialTheme.typography.bodyLarge.copy(
+                                color = MaterialTheme.colorScheme.primaryFixed,
+                                fontWeight = FontWeight.SemiBold,
+                            ),
+                            cursorBrush = SolidColor(MaterialTheme.colorScheme.secondary),
+                            decorationBox = { innerTextField ->
+                                Box(contentAlignment = Alignment.CenterStart) {
+                                    if (bio.isEmpty()) {
+                                        Text(
+                                            "I love cat",
+                                            style = MaterialTheme.typography.headlineLargeEmphasized.copy(
+                                                fontWeight = FontWeight.SemiBold,
+                                            ),
+                                            color = MaterialTheme.colorScheme.onSurfaceVariant.copy(
+                                                alpha = 0.5f
+                                            )
+                                        )
+                                    }
+                                    innerTextField()
+                                }
+                            }
+                        )
+                        Spacer(modifier = Modifier.weight(1f))
+                        Button(
+                            onClick = {
+                                onSave(name, bio, picture)
+                            },
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(ButtonDefaults.MediumContainerHeight),
+                            enabled = name.isNotBlank() && !isLoading,
+                        ) {
+                            if (isLoading) {
+                                LoadingIndicator()
+                            } else {
+                                Text(
+                                    text = "Continue",
+                                    style = MaterialTheme.typography.titleMediumEmphasized,
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/OnboardingScreen.kt

@@ -0,0 +1,159 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.FilledTonalButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.ColorFilter
+import androidx.compose.ui.graphics.drawscope.rotate
+import androidx.compose.ui.graphics.drawscope.translate
+import androidx.compose.ui.graphics.painter.Painter
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.coop
+import org.jetbrains.compose.resources.painterResource
+import su.reya.coop.LocalSnackbarHostState
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun OnboardingScreen(onOpenImport: () -> Unit, onOpenNew: () -> Unit) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val logoPainter = painterResource(Res.drawable.coop)
+
+    Scaffold(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        content = { innerPadding ->
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(bottom = innerPadding.calculateBottomPadding())
+            ) {
+                LogoRepeatingBackground(
+                    painter = logoPainter,
+                    logosPerRow = 6,
+                    rotationDegrees = -25f,
+                    horizontalOffset = 0.5f
+                )
+                Column(
+                    modifier = Modifier.fillMaxSize(),
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .weight(2f)
+                            .fillMaxWidth(),
+                        contentAlignment = Alignment.Center,
+                    ) {
+                        // TODO: Add headline
+                    }
+                    Box(
+                        modifier = Modifier
+                            .weight(1f)
+                            .fillMaxWidth()
+                            .padding(bottom = innerPadding.calculateBottomPadding()),
+                        contentAlignment = Alignment.BottomEnd,
+                    ) {
+                        Column(
+                            modifier = Modifier.padding(horizontal = innerPadding.calculateBottomPadding()),
+                        ) {
+                            Button(
+                                onClick = onOpenNew,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .size(ButtonDefaults.LargeContainerHeight),
+                            ) {
+                                Text(
+                                    text = "Start messaging",
+                                    style = MaterialTheme.typography.titleLargeEmphasized,
+                                )
+                            }
+                            Spacer(modifier = Modifier.size(16.dp))
+                            FilledTonalButton(
+                                onClick = onOpenImport,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .height(ButtonDefaults.LargeContainerHeight),
+                                colors = ButtonDefaults.filledTonalButtonColors(
+                                    containerColor = MaterialTheme.colorScheme.tertiaryContainer,
+                                    contentColor = MaterialTheme.colorScheme.onTertiaryContainer
+                                ),
+                            ) {
+                                Text(
+                                    text = "Import identity",
+                                    style = MaterialTheme.typography.titleLargeEmphasized,
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}
+
+@Composable
+fun LogoRepeatingBackground(
+    painter: Painter,
+    logosPerRow: Int,
+    rotationDegrees: Float = 0f,
+    horizontalOffset: Float = 0.5f
+) {
+    val tintColor = MaterialTheme.colorScheme.primary
+
+    Canvas(modifier = Modifier.fillMaxSize()) {
+        val canvasWidth = size.width
+        val canvasHeight = size.height
+        val logoSize = canvasWidth / logosPerRow
+
+        val offsetX = logoSize * horizontalOffset
+        val extraPadding = 2
+
+        val cols = logosPerRow + (extraPadding * 2)
+        val rows = (canvasHeight / logoSize).toInt() + 1
+
+        for (row in 0 until rows) {
+            for (col in -extraPadding until cols) {
+                val px = (col * logoSize) - offsetX
+                val py = row * logoSize
+
+                rotate(
+                    degrees = rotationDegrees,
+                    pivot = Offset(
+                        px + logoSize / 2,
+                        py + logoSize / 2
+                    )
+                ) {
+                    translate(left = px, top = py) {
+                        with(painter) {
+                            draw(
+                                size = Size(logoSize, logoSize),
+                                alpha = 0.1f,
+                                colorFilter = ColorFilter.tint(
+                                    tintColor
+                                )
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/RelayScreen.kt

@@ -0,0 +1,236 @@
+package su.reya.coop.screens
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SegmentedListItem
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateMapOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import org.jetbrains.compose.resources.painterResource
+import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayUrl
+import su.reya.coop.LocalNostrViewModel
+import su.reya.coop.LocalSnackbarHostState
+
+@OptIn(ExperimentalMaterial3ExpressiveApi::class)
+@Composable
+fun RelayScreen(
+    onBack: () -> Unit
+) {
+    val snackbarHostState = LocalSnackbarHostState.current
+    val viewModel = LocalNostrViewModel.current
+
+    val msgRelayList = remember { mutableStateListOf<RelayUrl>() }
+    val relayList = remember { mutableStateMapOf<RelayUrl, RelayMetadata?>() }
+
+    val inboxRelays by remember {
+        derivedStateOf {
+            relayList.filter { it.value == RelayMetadata.READ || it.value == null }.keys.toList()
+        }
+    }
+
+    val outboxRelays by remember {
+        derivedStateOf {
+            relayList.filter { it.value == RelayMetadata.WRITE || it.value == null }.keys.toList()
+        }
+    }
+
+    LaunchedEffect(Unit) {
+        relayList.putAll(viewModel.currentUserRelayList())
+        msgRelayList.addAll(viewModel.currentUserMsgRelayList())
+    }
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        topBar = {
+            TopAppBar(
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = MaterialTheme.colorScheme.surfaceContainer,
+                ),
+                title = {
+                    Text(
+                        text = "Relay Management",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                }
+            )
+        },
+        content = { innerPadding ->
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding)
+                    .padding(16.dp),
+                horizontalAlignment = Alignment.CenterHorizontally,
+                verticalArrangement = Arrangement.spacedBy(24.dp),
+            ) {
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Text(
+                        text = "Messaging Relay List",
+                        style = MaterialTheme.typography.titleMediumEmphasized,
+                    )
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        if (msgRelayList.isNotEmpty()) {
+                            msgRelayList.forEachIndexed { index, relayUrl ->
+                                SegmentedListItem(
+                                    onClick = { },
+                                    shapes = ListItemDefaults.segmentedShapes(
+                                        index = index,
+                                        count = msgRelayList.size
+                                    ),
+                                    content = { Text(text = relayUrl.toString()) },
+                                )
+                            }
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surface,
+                                modifier = Modifier.fillMaxWidth(),
+                                shape = RoundedCornerShape(8.dp)
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(16.dp),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "No relays configured",
+                                        style = MaterialTheme.typography.labelMediumEmphasized,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Text(
+                        text = "Inbox Relays",
+                        style = MaterialTheme.typography.titleMediumEmphasized,
+                    )
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        if (inboxRelays.isNotEmpty()) {
+                            inboxRelays.forEachIndexed { index, relayUrl ->
+                                SegmentedListItem(
+                                    onClick = { },
+                                    shapes = ListItemDefaults.segmentedShapes(
+                                        index = index,
+                                        count = inboxRelays.size
+                                    ),
+                                    content = { Text(text = relayUrl.toString()) },
+                                )
+                            }
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surface,
+                                modifier = Modifier.fillMaxWidth(),
+                                shape = RoundedCornerShape(8.dp)
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(16.dp),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "No relays configured",
+                                        style = MaterialTheme.typography.labelMediumEmphasized,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(8.dp),
+                ) {
+                    Text(
+                        text = "Outbox Relays",
+                        style = MaterialTheme.typography.titleMediumEmphasized,
+                    )
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(ListItemDefaults.SegmentedGap),
+                    ) {
+                        if (outboxRelays.isNotEmpty()) {
+                            outboxRelays.forEachIndexed { index, relayUrl ->
+                                SegmentedListItem(
+                                    onClick = { },
+                                    shapes = ListItemDefaults.segmentedShapes(
+                                        index = index,
+                                        count = outboxRelays.size
+                                    ),
+                                    content = { Text(text = relayUrl.toString()) },
+                                )
+                            }
+                        } else {
+                            Surface(
+                                color = MaterialTheme.colorScheme.surface,
+                                modifier = Modifier.fillMaxWidth(),
+                                shape = RoundedCornerShape(8.dp)
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(16.dp),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "No relays configured",
+                                        style = MaterialTheme.typography.labelMediumEmphasized,
+                                    )
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/screens/ScanScreen.kt

@@ -0,0 +1,115 @@
+package su.reya.coop.screens
+
+import android.annotation.SuppressLint
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.border
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.BlendMode
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.ic_arrow_back
+import org.jetbrains.compose.resources.painterResource
+import org.publicvalue.multiplatform.qrcode.CameraPosition
+import org.publicvalue.multiplatform.qrcode.CodeType
+import org.publicvalue.multiplatform.qrcode.ScannerWithPermissions
+import su.reya.coop.LocalNavController
+import su.reya.coop.LocalSnackbarHostState
+
+@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
+@Composable
+fun ScanScreen(
+    onBack: () -> Unit
+) {
+    val navController = LocalNavController.current
+    val snackbarHostState = LocalSnackbarHostState.current
+
+    val onResult: (String) -> Unit = { result ->
+        navController.previousBackStackEntry?.savedStateHandle?.set("qr_result", result)
+        navController.popBackStack()
+    }
+
+    Scaffold(
+        snackbarHost = { SnackbarHost(snackbarHostState) },
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(
+                        text = "Scan QR",
+                        style = MaterialTheme.typography.titleMediumEmphasized
+                    )
+                },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            painter = painterResource(Res.drawable.ic_arrow_back),
+                            contentDescription = "Back"
+                        )
+                    }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = Color.Transparent,
+                    titleContentColor = Color.White,
+                    navigationIconContentColor = Color.White,
+                )
+            )
+        },
+    ) { innerPadding ->
+        Box(modifier = Modifier.fillMaxSize()) {
+            ScannerWithPermissions(
+                modifier = Modifier.fillMaxSize(),
+                onScanned = {
+                    println("Scanned: $it");
+                    onResult(it)
+                    true
+                },
+                types = listOf(CodeType.QR),
+                cameraPosition = CameraPosition.BACK,
+                enableTorch = false
+            )
+            Canvas(modifier = Modifier.fillMaxSize()) {
+                val scannerSize = 250.dp.toPx()
+                val left = (size.width - scannerSize) / 2
+                val top = (size.height - scannerSize) / 2
+                drawRect(color = Color.Black.copy(alpha = 0.6f))
+                drawRect(
+                    color = Color.Transparent,
+                    topLeft = Offset(left, top),
+                    size = Size(scannerSize, scannerSize),
+                    blendMode = BlendMode.Clear
+                )
+            }
+            Box(
+                modifier = Modifier
+                    .size(250.dp)
+                    .align(Alignment.Center)
+                    .border(2.dp, Color.White, RoundedCornerShape(12.dp))
+            )
+            Text(
+                text = "Scan a Nostr address",
+                style = MaterialTheme.typography.titleSmallEmphasized,
+                color = Color.White,
+                modifier = Modifier
+                    .align(Alignment.BottomCenter)
+                    .padding(bottom = 64.dp)
+            )
+        }
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/shared/Avatar.kt

@@ -0,0 +1,38 @@
+package su.reya.coop.shared
+
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import coil3.compose.AsyncImage
+import coop.composeapp.generated.resources.Res
+import coop.composeapp.generated.resources.avatar
+import org.jetbrains.compose.resources.painterResource
+
+@Composable
+fun Avatar(
+    picture: String?,
+    description: String?,
+    modifier: Modifier = Modifier,
+    size: Dp = 48.dp,
+    shape: Shape = CircleShape
+) {
+    val placeholder = painterResource(Res.drawable.avatar)
+
+    AsyncImage(
+        model = picture,
+        contentDescription = description,
+        modifier = modifier
+            .size(size)
+            .clip(shape),
+        contentScale = ContentScale.Crop,
+        fallback = placeholder,
+        error = placeholder,
+        placeholder = placeholder
+    )
+}

composeApp/src/androidMain/kotlin/su/reya/coop/shared/RoomHelper.kt

@@ -0,0 +1,33 @@
+package su.reya.coop.shared
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.map
+import su.reya.coop.NostrViewModel
+import su.reya.coop.Room
+import su.reya.coop.short
+
+fun Room.displayNameFlow(viewModel: NostrViewModel): Flow<String> {
+    if (!subject.isNullOrBlank()) return flowOf<String>(subject!!)
+
+    val memberFlows = members.map { viewModel.getMetadata(it) }
+
+    return combine(memberFlows) { metadataArray ->
+        if (isGroup()) {
+            val profiles = metadataArray.map { it?.asRecord() }
+            val names = profiles.take(2).mapNotNull { it?.name ?: it?.displayName }
+            var combined = names.joinToString(", ")
+            if (profiles.size > 2) combined += ", +${profiles.size - 2}"
+            combined.ifBlank { "Unknown group" }
+        } else {
+            val profile = metadataArray.firstOrNull()?.asRecord()
+            profile?.name ?: profile?.displayName ?: members.firstOrNull()?.short() ?: "Unknown"
+        }
+    }
+}
+
+fun Room.pictureFlow(viewModel: NostrViewModel): Flow<String?> {
+    val firstMember = members.firstOrNull() ?: return kotlinx.coroutines.flow.flowOf(null)
+    return viewModel.getMetadata(firstMember).map { it?.asRecord()?.picture }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/storage/SecretCrypto.kt

@@ -0,0 +1,78 @@
+package su.reya.coop.coop.storage
+
+import android.security.keystore.KeyGenParameterSpec
+import android.security.keystore.KeyProperties
+import android.util.Base64
+import java.nio.charset.StandardCharsets
+import java.security.KeyStore
+import javax.crypto.Cipher
+import javax.crypto.KeyGenerator
+import javax.crypto.SecretKey
+import javax.crypto.spec.GCMParameterSpec
+
+data class SecretEntry(
+    val encrypted: String,
+    val iv: String
+)
+
+class SecretCrypto {
+    private val keyAlias = "coop"
+    private val keyStoreType = "AndroidKeyStore"
+    private val transformation = "AES/GCM/NoPadding"
+
+    fun encrypt(content: String): SecretEntry {
+        // Initialize cipher
+        val cipher = Cipher.getInstance(transformation)
+        cipher.init(Cipher.ENCRYPT_MODE, getOrCreateKey())
+
+        // Encrypt content
+        val encrypted = cipher.doFinal(content.toByteArray())
+        val iv = cipher.iv
+
+        return SecretEntry(
+            encrypted = Base64.encodeToString(encrypted, Base64.NO_WRAP),
+            iv = Base64.encodeToString(iv, Base64.NO_WRAP)
+        )
+    }
+
+    fun decrypt(entry: SecretEntry): String {
+        val encrypted = Base64.decode(entry.encrypted, Base64.NO_WRAP)
+        val iv = Base64.decode(entry.iv, Base64.NO_WRAP)
+
+        // Initialize cipher
+        val cipher = Cipher.getInstance(transformation)
+        val spec = GCMParameterSpec(128, iv)
+        cipher.init(Cipher.DECRYPT_MODE, getOrCreateKey(), spec)
+
+        // Decrypt content
+        val plaintext = cipher.doFinal(encrypted)
+
+        return String(plaintext, StandardCharsets.UTF_8)
+    }
+
+    private fun getOrCreateKey(): SecretKey {
+        val keyStore = KeyStore.getInstance(keyStoreType).apply { load(null) }
+        val existingKey = keyStore.getKey(keyAlias, null)
+
+        // Return existing key if available
+        if (existingKey is SecretKey) return existingKey
+
+        // Construct a new key generator
+        val keyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, keyStoreType)
+
+        // Initialize key generation parameters
+        val spec = KeyGenParameterSpec.Builder(
+            keyAlias,
+            KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT
+        )
+            .setBlockModes(KeyProperties.BLOCK_MODE_GCM)
+            .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
+            .setKeySize(256)
+            .build()
+
+        // Generate a new key
+        keyGenerator.init(spec)
+
+        return keyGenerator.generateKey()
+    }
+}

composeApp/src/androidMain/kotlin/su/reya/coop/storage/SecretStore.kt

@@ -0,0 +1,43 @@
+package su.reya.coop.coop.storage
+
+import android.content.Context
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.stringPreferencesKey
+import androidx.datastore.preferences.preferencesDataStore
+import kotlinx.coroutines.flow.first
+import su.reya.coop.storage.SecretStorage
+
+private val Context.dataStore by preferencesDataStore("secret_store")
+
+class SecretStore(private val context: Context) : SecretStorage {
+    private val crypto = SecretCrypto()
+
+    override suspend fun set(key: String, value: String) {
+        val entry = crypto.encrypt(value)
+
+        context.dataStore.edit { prefs ->
+            prefs[stringPreferencesKey("${key}_encrypted")] = entry.encrypted
+            prefs[stringPreferencesKey("${key}_iv")] = entry.iv
+        }
+    }
+
+    override suspend fun get(key: String): String? {
+        val prefs = context.dataStore.data.first()
+        val encrypted = prefs[stringPreferencesKey("${key}_encrypted")] ?: return null
+        val iv = prefs[stringPreferencesKey("${key}_iv")] ?: return null
+
+        return crypto.decrypt(SecretEntry(encrypted, iv))
+    }
+
+    override suspend fun clear(key: String) {
+        context.dataStore.edit { prefs ->
+            prefs.remove(stringPreferencesKey("${key}_encrypted"))
+            prefs.remove(stringPreferencesKey("${key}_iv"))
+        }
+    }
+
+    override suspend fun has(key: String): Boolean {
+        val prefs = context.dataStore.data.first()
+        return prefs[stringPreferencesKey("${key}_encrypted")] != null
+    }
+}

composeApp/src/androidMain/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>

composeApp/src/androidMain/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background" />
-    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>

composeApp/src/androidMain/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#F8FF37</color>
+</resources>

gradle.properties

@@ -10,3 +10,13 @@ org.gradle.caching=true
 #Android
 android.nonTransitiveRClass=true
 android.useAndroidX=true
+android.defaults.buildfeatures.resvalues=true
+android.sdk.defaultTargetSdkToCompileSdkIfUnset=false
+android.enableAppCompileTimeRClass=false
+android.usesSdkInManifest.disallowed=false
+android.uniquePackageNames=false
+android.dependency.useConstraints=true
+android.r8.strictFullModeForKeepRules=false
+android.r8.optimizedResourceShrinking=false
+android.builtInKotlin=false
+android.newDsl=false

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-agp = "8.13.2"
+agp = "9.2.1"
 android-compileSdk = "36"
 android-minSdk = "24"
 android-targetSdk = "36"
@@ -8,11 +8,14 @@ androidx-appcompat = "1.7.1"
 androidx-core = "1.18.0"
 androidx-espresso = "3.7.0"
 androidx-lifecycle = "2.10.0"
+androidx-navigation = "2.8.8"
 androidx-testExt = "1.3.0"
 composeMultiplatform = "1.10.3"
 junit = "4.13.2"
 kotlin = "2.3.20"
+kotlinx-serialization = "1.8.0"
 material3 = "1.10.0-alpha05"
+ktor = "3.4.3"
 
 [libraries]
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
@@ -23,6 +26,8 @@ androidx-testExt-junit = { module = "androidx.test.ext:junit", version.ref = "an
 androidx-espresso-core = { module = "androidx.test.espresso:espresso-core", version.ref = "androidx-espresso" }
 androidx-appcompat = { module = "androidx.appcompat:appcompat", version.ref = "androidx-appcompat" }
 androidx-activity-compose = { module = "androidx.activity:activity-compose", version.ref = "androidx-activity" }
+androidx-navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "androidx-navigation" }
+kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinx-serialization" }
 compose-uiTooling = { module = "org.jetbrains.compose.ui:ui-tooling", version.ref = "composeMultiplatform" }
 androidx-lifecycle-viewmodelCompose = { module = "org.jetbrains.androidx.lifecycle:lifecycle-viewmodel-compose", version.ref = "androidx-lifecycle" }
 androidx-lifecycle-runtimeCompose = { module = "org.jetbrains.androidx.lifecycle:lifecycle-runtime-compose", version.ref = "androidx-lifecycle" }
@@ -32,6 +37,12 @@ compose-material3 = { module = "org.jetbrains.compose.material3:material3", vers
 compose-ui = { module = "org.jetbrains.compose.ui:ui", version.ref = "composeMultiplatform" }
 compose-components-resources = { module = "org.jetbrains.compose.components:components-resources", version.ref = "composeMultiplatform" }
 compose-uiToolingPreview = { module = "org.jetbrains.compose.ui:ui-tooling-preview", version.ref = "composeMultiplatform" }
+ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor" }
+ktor-client-okhttp = { module = "io.ktor:ktor-client-okhttp", version.ref = "ktor" }
+ktor-client-darwin = { module = "io.ktor:ktor-client-darwin", version.ref = "ktor" }
+ktor-client-websockets = { module = "io.ktor:ktor-client-websockets", version.ref = "ktor" }
+ktor-client-content-negotiation = { module = "io.ktor:ktor-client-content-negotiation", version.ref = "ktor" }
+ktor-serialization-kotlinx-json = { module = "io.ktor:ktor-serialization-kotlinx-json", version.ref = "ktor" }
 
 [plugins]
 androidApplication = { id = "com.android.application", version.ref = "agp" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

shared/build.gradle.kts

@@ -3,6 +3,7 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidLibrary)
+    kotlin("plugin.serialization") version libs.versions.kotlin.get()
 }
 
 kotlin {
@@ -24,7 +25,21 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            // put your Multiplatform dependencies here
+            implementation("org.jetbrains.androidx.lifecycle:lifecycle-viewmodel-compose:2.10.0")
+            implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.2")
+            implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.8.0")
+            implementation("su.reya:nostr-sdk-kmp:0.2.3")
+            implementation("com.squareup.okio:okio:3.16.2")
+            implementation(libs.ktor.client.core)
+            implementation(libs.ktor.client.websockets)
+            implementation(libs.ktor.client.content.negotiation)
+            implementation(libs.ktor.serialization.kotlinx.json)
+        }
+        androidMain.dependencies {
+            implementation(libs.ktor.client.okhttp)
+        }
+        iosMain.dependencies {
+            implementation(libs.ktor.client.darwin)
         }
         commonTest.dependencies {
             implementation(libs.kotlin.test)

shared/src/androidMain/kotlin/su/reya/coop/Platform.android.kt

@@ -1,9 +0,0 @@
-package su.reya.coop
-
-import android.os.Build
-
-class AndroidPlatform : Platform {
-    override val name: String = "Android ${Build.VERSION.SDK_INT}"
-}
-
-actual fun getPlatform(): Platform = AndroidPlatform()

shared/src/commonMain/kotlin/su/reya/coop/CoopWebSocket.kt

@@ -0,0 +1,75 @@
+package su.reya.coop
+
+import io.ktor.client.HttpClient
+import io.ktor.client.plugins.websocket.DefaultClientWebSocketSession
+import io.ktor.client.plugins.websocket.webSocketSession
+import io.ktor.client.request.url
+import io.ktor.websocket.Frame
+import io.ktor.websocket.close
+import io.ktor.websocket.readBytes
+import io.ktor.websocket.readText
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.channels.ClosedReceiveChannelException
+import rust.nostr.sdk.ConnectionMode
+import rust.nostr.sdk.CustomWebSocketTransport
+import rust.nostr.sdk.WebSocketAdapter
+import rust.nostr.sdk.WebSocketAdapterWrapper
+import rust.nostr.sdk.WebSocketMessage
+
+class KtorWebSocketAdapter(
+    private val client: HttpClient,
+    private val session: DefaultClientWebSocketSession
+) : WebSocketAdapter {
+
+    override suspend fun send(msg: WebSocketMessage) {
+        try {
+            when (msg) {
+                is WebSocketMessage.Text -> session.send(Frame.Text(msg.text))
+                is WebSocketMessage.Binary -> session.send(Frame.Binary(true, msg.bytes))
+                is WebSocketMessage.Ping -> session.send(Frame.Ping(msg.bytes))
+                is WebSocketMessage.Pong -> session.send(Frame.Pong(msg.bytes))
+                else -> {}
+            }
+        } catch (e: Exception) {
+            println("Attempted to send on a closed WebSocket: ${e.message}")
+            throw e
+        }
+    }
+
+    override suspend fun recv(): WebSocketMessage? {
+        return try {
+            when (val frame = session.incoming.receive()) {
+                is Frame.Text -> WebSocketMessage.Text(frame.readText())
+                is Frame.Binary -> WebSocketMessage.Binary(frame.readBytes())
+                is Frame.Ping -> WebSocketMessage.Ping(frame.readBytes())
+                is Frame.Pong -> WebSocketMessage.Pong(frame.readBytes())
+                else -> null
+            }
+        } catch (e: ClosedReceiveChannelException) {
+            null
+        } catch (e: Exception) {
+            throw e
+        }
+    }
+
+    override suspend fun closeConnection() {
+        session.cancel()
+        session.close()
+    }
+}
+
+class CoopWebSocketClient(private val httpClient: HttpClient) : CustomWebSocketTransport {
+    override fun supportPing(): Boolean = false
+
+    override suspend fun connect(url: String, mode: ConnectionMode): WebSocketAdapterWrapper {
+        try {
+            val session = httpClient.webSocketSession {
+                url(url)
+            }
+            val adapter = KtorWebSocketAdapter(httpClient, session)
+            return WebSocketAdapterWrapper(adapter)
+        } catch (e: Exception) {
+            throw e
+        }
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/Greeting.kt

@@ -1,9 +0,0 @@
-package su.reya.coop
-
-class Greeting {
-    private val platform = getPlatform()
-
-    fun greet(): String {
-        return "Hello, ${platform.name}!"
-    }
-}

shared/src/commonMain/kotlin/su/reya/coop/Nostr.kt

@@ -0,0 +1,870 @@
+package su.reya.coop
+
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.plugins.websocket.WebSockets
+import io.ktor.client.request.get
+import io.ktor.client.statement.HttpResponse
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import rust.nostr.sdk.AckPolicy
+import rust.nostr.sdk.Alphabet
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.Client
+import rust.nostr.sdk.ClientBuilder
+import rust.nostr.sdk.ClientNotification
+import rust.nostr.sdk.Contact
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.EventId
+import rust.nostr.sdk.Filter
+import rust.nostr.sdk.GossipConfig
+import rust.nostr.sdk.Keys
+import rust.nostr.sdk.Kind
+import rust.nostr.sdk.KindStandard
+import rust.nostr.sdk.LogLevel
+import rust.nostr.sdk.Metadata
+import rust.nostr.sdk.MetadataRecord
+import rust.nostr.sdk.Nip05Address
+import rust.nostr.sdk.Nip05Profile
+import rust.nostr.sdk.NostrDatabase
+import rust.nostr.sdk.NostrGossip
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.RelayCapabilities
+import rust.nostr.sdk.RelayMessageEnum
+import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayUrl
+import rust.nostr.sdk.ReqExitPolicy
+import rust.nostr.sdk.ReqTarget
+import rust.nostr.sdk.SendEventTarget
+import rust.nostr.sdk.SingleLetterTag
+import rust.nostr.sdk.SleepWhenIdle
+import rust.nostr.sdk.SubscribeAutoCloseOptions
+import rust.nostr.sdk.Tag
+import rust.nostr.sdk.TagKind
+import rust.nostr.sdk.Timestamp
+import rust.nostr.sdk.UnsignedEvent
+import rust.nostr.sdk.UnwrappedGift
+import rust.nostr.sdk.extractRelayList
+import rust.nostr.sdk.giftWrapAsync
+import rust.nostr.sdk.initLogger
+import rust.nostr.sdk.nip17ExtractRelayList
+import kotlin.time.Duration
+
+object NostrManager {
+    val instance = Nostr()
+}
+
+class Nostr {
+    private val _isInitialized = MutableStateFlow(false)
+    val isInitialized: StateFlow<Boolean> = _isInitialized.asStateFlow()
+
+    var client: Client? = null
+        private set
+    var signer: UniversalSigner = UniversalSigner(Keys.generate())
+        private set
+    var deviceSigner: AsyncNostrSigner? = null
+        private set
+    var sentEvents: MutableMap<EventId, List<RelayUrl>> = mutableMapOf()
+        private set
+    var rumorMap: MutableMap<EventId, EventId> = mutableMapOf()
+        private set
+
+    suspend fun init(dbPath: String) {
+        try {
+            if (_isInitialized.value) return
+
+            // Initialize the logger for nostr client
+            initLogger(LogLevel.DEBUG)
+
+            val lmdb = NostrDatabase.lmdb(dbPath)
+            val gossip = NostrGossip.inMemory()
+            val idleTimeout = Duration.parse("5m")
+            val httpClient = HttpClient {
+                install(WebSockets)
+            }
+
+            client =
+                ClientBuilder()
+                    .signer(signer)
+                    .websocketTransport(CoopWebSocketClient(httpClient))
+                    .database(lmdb)
+                    .gossip(gossip)
+                    .gossipConfig(
+                        GossipConfig()
+                            .noBackgroundRefresh()
+                            .fetchTimeout(Duration.parse("2s"))
+                            .syncIdleTimeout(Duration.parse("100ms"))
+                            .syncInitialTimeout(Duration.parse("100ms"))
+                    )
+                    .verifySubscriptions(false)
+                    .automaticAuthentication(true)
+                    .sleepWhenIdle(SleepWhenIdle.Enabled(idleTimeout))
+                    .build()
+
+            _isInitialized.value = true
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to initialize Nostr client: ${e.message}", e)
+        }
+    }
+
+    suspend fun waitUntilInitialized() {
+        _isInitialized.first { it }
+    }
+
+    suspend fun connectBootstrapRelays() {
+        // Bootstrap relays
+        client?.addRelay(RelayUrl.parse("wss://relay.primal.net"))
+        client?.addRelay(RelayUrl.parse("wss://user.kindpag.es"))
+        client?.addRelay(RelayUrl.parse("wss://purplepag.es"))
+
+
+        // Indexer relay for NIP-65 discovery
+        client?.addRelay(
+            url = RelayUrl.parse("wss://indexer.coracle.social"),
+            capabilities = RelayCapabilities.gossip()
+        )
+
+        // Connect to all bootstrap relays and wait for all connections to be established
+        client?.connect(Duration.parse("2s"))
+    }
+
+    suspend fun disconnect() {
+        client?.shutdown()
+    }
+
+    suspend fun exit() {
+        signer.switch(Keys.generate())
+        deviceSigner = null
+    }
+
+    suspend fun setSigner(new: AsyncNostrSigner) {
+        try {
+            signer.switch(new)
+            // Fetch metadata for current user
+            getUserMetadata()
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to set signer: ${e.message}", e)
+        }
+    }
+
+    fun isSignedByUser(event: Event): Boolean {
+        return try {
+            signer.currentUser == event.author()
+        } catch (e: Exception) {
+            println("Failed to check if event is signed by user: ${e.message}")
+            false
+        }
+    }
+
+    suspend fun getUserMetadata() {
+        try {
+            val author = signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+            // Get the latest metadata event
+            val metadataFilter =
+                Filter().kind(Kind.fromStd(KindStandard.METADATA)).author(author).limit(1u)
+
+            // Get the latest contact list event
+            val contactFilter =
+                Filter().kind(Kind.fromStd(KindStandard.CONTACT_LIST)).author(author).limit(1u)
+
+            // Get the latest messaging relay list event
+            val msgRelayFilter =
+                Filter().kind(Kind.fromStd(KindStandard.INBOX_RELAYS)).author(author).limit(1u)
+
+            // Construct a target that includes all filters
+            val target = ReqTarget.auto(listOf(metadataFilter, contactFilter, msgRelayFilter))
+            val opts = SubscribeAutoCloseOptions().exitPolicy(ReqExitPolicy.ExitOnEose)
+
+            client?.subscribe(target = target, id = "user-metadata", closeOn = opts)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch user metadata: ${e.message}", e)
+        }
+    }
+
+    suspend fun getUserMessages(msgRelayList: Event) {
+        try {
+            val author = signer.currentUser ?: throw IllegalStateException("User not signed in")
+            val relays = nip17ExtractRelayList(msgRelayList)
+
+            // Ensure relay connections
+            relays.forEach { relay ->
+                client?.addRelay(relay)
+                client?.connectRelay(relay)
+            }
+
+            // Construct a filter for gift wrap events
+            val filter = Filter().kind(Kind.fromStd(KindStandard.GIFT_WRAP)).pubkey(author)
+            val target = mutableMapOf<RelayUrl, List<Filter>>()
+            relays.forEach { relay ->
+                target[relay] = listOf(filter)
+            }
+
+            client?.subscribe(
+                target = ReqTarget.manual(target),
+                id = "all-gift-wraps"
+            )
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch user messages: ${e.message}", e)
+        }
+    }
+
+    suspend fun handleLiteNotifications(
+        onNewMessage: (UnsignedEvent) -> Unit,
+    ) {
+        val now = Timestamp.now()
+        val processedEvent = mutableSetOf<EventId>()
+        val notifications = client?.notifications() ?: return
+
+        while (true) {
+            val notification = notifications.next() ?: continue
+
+            when (notification) {
+                is ClientNotification.Message -> {
+                    val relayUrl = notification.relayUrl
+
+                    when (val message = notification.message.asEnum()) {
+                        is RelayMessageEnum.EventMsg -> {
+                            val event = message.event
+                            val subscriptionId = message.subscriptionId
+
+                            // Ignore events not from the newest gift wraps subscription
+                            if (subscriptionId != "newest-gift-wraps") continue
+
+                            // Prevent processing duplicate events
+                            if (processedEvent.contains(event.id())) continue
+                            processedEvent.add(event.id())
+
+                            if (event.kind().asStd()?.equals(KindStandard.GIFT_WRAP) == true) {
+                                try {
+                                    val rumor = extractRumor(event)
+
+                                    // Handle new message
+                                    rumor?.createdAt()?.asSecs()?.let {
+                                        if (it >= now.asSecs()) {
+                                            onNewMessage(rumor)
+                                        }
+                                    }
+                                } catch (e: Exception) {
+                                    println("Failed to extract rumor: $e")
+                                }
+                            }
+                        }
+
+                        else -> {
+                            /* Ignore other event kinds */
+                        }
+                    }
+                }
+
+                else -> {
+                    /* Ignore other message types */
+                }
+            }
+        }
+    }
+
+    suspend fun handleNotifications(
+        onMetadataUpdate: (PublicKey, Metadata) -> Unit,
+        onContactListUpdate: (List<PublicKey>) -> Unit,
+        onNewMessage: (UnsignedEvent) -> Unit,
+        onSubscriptionClose: () -> Unit,
+    ) = coroutineScope {
+        val now = Timestamp.now()
+        val processedEvent = mutableSetOf<EventId>()
+        val notifications = client?.notifications() ?: return@coroutineScope
+
+        var eoseTrackerJob: Job? = null
+
+        while (true) {
+            val notification = notifications.next() ?: continue
+
+            when (notification) {
+                is ClientNotification.Message -> {
+                    val relayUrl = notification.relayUrl
+
+                    when (val message = notification.message.asEnum()) {
+                        is RelayMessageEnum.EventMsg -> {
+                            val event = message.event
+                            val id = message.subscriptionId
+
+                            // Prevent processing duplicate events
+                            if (processedEvent.contains(event.id())) continue
+                            processedEvent.add(event.id())
+
+                            if (event.kind().asStd()?.equals(KindStandard.METADATA) == true) {
+                                try {
+                                    val metadata = Metadata.fromJson(event.content())
+                                    onMetadataUpdate(event.author(), metadata)
+                                } catch (e: Exception) {
+                                    println("Failed to parse metadata: $e")
+                                }
+                            }
+
+                            if (event.kind().asStd()?.equals(KindStandard.CONTACT_LIST) == true) {
+                                if (isSignedByUser(event = event)) {
+                                    onContactListUpdate(event.tags().publicKeys())
+                                }
+                            }
+
+                            if (event.kind().asStd()?.equals(KindStandard.INBOX_RELAYS) == true) {
+                                // Get all gift wrap events for the current user
+                                if (isSignedByUser(event = event)) {
+                                    getUserMessages(msgRelayList = event)
+                                }
+                            }
+
+                            if (event.kind().asStd()?.equals(KindStandard.GIFT_WRAP) == true) {
+                                try {
+                                    val rumor = extractRumor(event)
+
+                                    // Logic to notify UI after processing
+                                    // Cancel previous tracker if it exists
+                                    eoseTrackerJob?.cancel()
+                                    // Start a new tracker
+                                    eoseTrackerJob = launch {
+                                        delay(10000) // Wait for 10 seconds
+                                        onSubscriptionClose()
+                                    }
+
+                                    // Handle new message
+                                    rumor?.createdAt()?.asSecs()?.let {
+                                        if (it >= now.asSecs()) {
+                                            onNewMessage(rumor)
+                                        }
+                                    }
+                                } catch (e: Exception) {
+                                    println("Failed to extract rumor: $e")
+                                }
+                            }
+                        }
+
+                        is RelayMessageEnum.EndOfStoredEvents -> {
+                            val subscriptionId = message.subscriptionId
+
+                            if (subscriptionId == "all-gift-wraps" || subscriptionId == "newest-gift-wraps") {
+                                onSubscriptionClose()
+                            }
+                        }
+
+                        is RelayMessageEnum.Ok -> {
+                            if (sentEvents.containsKey(message.eventId)) {
+                                val currentRelays = sentEvents[message.eventId] ?: emptyList()
+                                sentEvents[message.eventId] = currentRelays + relayUrl
+                            }
+                        }
+
+                        else -> {
+                            /* Ignore other message types */
+                        }
+                    }
+                }
+
+                is ClientNotification.Shutdown -> {
+                    break
+                }
+
+                else -> {
+                    /* Ignore other message types */
+                }
+            }
+        }
+    }
+
+    private suspend fun getCachedRumor(giftId: EventId): UnsignedEvent? {
+        try {
+            val filter = Filter().identifier(giftId.toHex())
+            val event = client?.database()?.query(filter)?.first()
+
+            return event?.content()?.let { UnsignedEvent.fromJson(it) }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get cached rumor: ${e.message}", e)
+        }
+    }
+
+    private suspend fun setCachedRumor(giftId: EventId, rumor: UnsignedEvent) {
+        try {
+            val currentUser =
+                signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+            // Ensure the rumor ID is set
+            val rumor = rumor.ensureId()
+            val roomId = rumor.roomId()
+
+            // Construct reference tags
+            val tags = listOf(
+                Tag.identifier(giftId.toHex()),
+                Tag.event(rumor.id()!!),
+                Tag.reference(roomId.toString()),
+                Tag.custom(TagKind.Unknown("k"), listOf("dm"))
+            )
+
+            // Set event kind
+            val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA);
+
+            val event = EventBuilder(kind, rumor.asJson())
+                .tags(tags)
+                .build(currentUser)
+                .signWithKeys(Keys.generate())
+
+            client?.database()?.saveEvent(event)
+        } catch (e: Exception) {
+            println("Failed to set cached rumor: ${e.message}")
+        }
+    }
+
+    private suspend fun extractRumor(event: Event): UnsignedEvent? {
+        // Check if the rumor is already cached
+        val cachedRumor = getCachedRumor(event.id())
+        if (cachedRumor != null) return cachedRumor
+
+        // Get all signers
+        val signers = listOfNotNull(signer, deviceSigner)
+        if (signers.isEmpty()) return null
+
+        // Try to unwrap the gift with each signer
+        for (signer in signers) {
+            try {
+                // TODO: custom unwrapping logic
+                val gift = UnwrappedGift.fromGiftWrapAsync(signer = signer, giftWrap = event)
+                val rumor = gift.rumor()
+                // Save the rumor to the database
+                setCachedRumor(event.id(), rumor)
+                // Return the rumor
+                return rumor
+            } catch (e: Exception) {
+                println("Failed to unwrap gift: ${e.message}")
+                continue
+            }
+        }
+
+        return null
+    }
+
+    private suspend fun getDefaultRelayList(): Map<RelayUrl, RelayMetadata> {
+        // Construct a list of relays
+        val relayList = mapOf<RelayUrl, RelayMetadata>(
+            RelayUrl.parse("wss://relay.damus.io") to RelayMetadata.READ,
+            RelayUrl.parse("wss://relay.primal.net") to RelayMetadata.READ,
+            RelayUrl.parse("wss://relay.nostr.net") to RelayMetadata.WRITE,
+            RelayUrl.parse("wss://nostr.superfriends.online") to RelayMetadata.WRITE
+        )
+
+        // Ensure all relays are added and connected
+        relayList.forEach { (relay, metadata) ->
+            client?.addRelay(
+                url = relay,
+                capabilities =
+                    if (metadata == RelayMetadata.READ) RelayCapabilities.read()
+                    else if (metadata == RelayMetadata.WRITE) RelayCapabilities.write()
+                    else RelayCapabilities.none()
+            )
+            client?.connectRelay(relay)
+        }
+
+        return relayList
+    }
+
+    suspend fun getDefaultMsgRelayList(): List<RelayUrl> {
+        // Construct a list of messaging relays
+        val msgRelayList = listOf(
+            RelayUrl.parse("wss://relay.0xchat.com"),
+            RelayUrl.parse("wss://nip17.com"),
+        )
+
+        // Ensure all relays are added and connected
+        msgRelayList.forEach { relay ->
+            client?.addRelay(relay, RelayCapabilities.none())
+            client?.connectRelay(relay)
+        }
+
+        return msgRelayList
+    }
+
+    suspend fun createIdentity(keys: Keys, name: String, bio: String?, picture: String?) {
+        // Send relay list event
+        val relayList = getDefaultRelayList()
+        val relayListEvent = EventBuilder.relayList(relayList).signWithKeys(keys);
+
+        client?.sendEvent(
+            event = relayListEvent,
+            target = SendEventTarget.broadcast(),
+            ackPolicy = AckPolicy.all(),
+            okTimeout = Duration.parse("3s")
+        )
+
+        // Send messaging relay list event
+        val msgRelayList = getDefaultMsgRelayList()
+        val msgRelayListEvent = EventBuilder.nip17RelayList(msgRelayList).signWithKeys(keys)
+
+        client?.sendEvent(
+            event = msgRelayListEvent,
+            target = SendEventTarget.toNip65(),
+            ackPolicy = AckPolicy.none()
+        )
+
+        // Send metadata event
+        val metadata =
+            Metadata.fromRecord(MetadataRecord(displayName = name, about = bio, picture = picture))
+        val metadataEvent = EventBuilder.metadata(metadata).signWithKeys(keys)
+
+        client?.sendEvent(
+            event = metadataEvent,
+            target = SendEventTarget.broadcast(),
+            ackPolicy = AckPolicy.none()
+        )
+
+        // Send contact list event
+        val defaultContact =
+            listOf(Contact(publicKey = PublicKey.parse("npub1j3rz3ndl902lya6ywxvy5c983lxs8mpukqnx4pa4lt5wrykwl5ys7wpw3x")))
+        val contactListEvent = EventBuilder.contactList(defaultContact).signWithKeys(keys)
+
+        client?.sendEvent(
+            event = contactListEvent,
+            target = SendEventTarget.toNip65(),
+            ackPolicy = AckPolicy.none()
+        )
+
+        setSigner(keys)
+    }
+
+    suspend fun getAllCacheMetadata(): Map<PublicKey, Metadata> {
+        try {
+            val filter = Filter().kind(Kind.fromStd(KindStandard.METADATA)).limit(200u)
+            val events = client?.database()?.query(filter)
+            val results = mutableMapOf<PublicKey, Metadata>()
+
+            events?.toVec()?.forEach { event ->
+                val metadata = Metadata.fromJson(event.content())
+                results[event.author()] = metadata
+            }
+
+            return results
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get cache metadata: ${e.message}", e)
+        }
+    }
+
+    suspend fun fetchMetadataBatch(keys: List<PublicKey>) {
+        try {
+            val limit = keys.size.toULong() * 4u;
+            val opts = SubscribeAutoCloseOptions().exitPolicy(ReqExitPolicy.ExitOnEose)
+
+            // Construct a filter for metadata events
+            val filter = Filter()
+                .kind(Kind.fromStd(KindStandard.METADATA))
+                .authors(keys)
+                .limit(limit)
+
+            // Construct a target that includes all filters
+            val target =
+                ReqTarget.manual(
+                    mapOf(
+                        RelayUrl.parse("wss://purplepag.es") to listOf(filter),
+                        RelayUrl.parse("wss://user.kindpag.es") to listOf(filter),
+                        RelayUrl.parse("wss://relay.primal.net") to listOf(filter),
+                    )
+                )
+
+            client?.subscribe(target = target, closeOn = opts)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch metadata batch: ${e.message}", e)
+        }
+    }
+
+    suspend fun setMsgRelays(urls: List<RelayUrl>) {
+        try {
+            val event = EventBuilder.nip17RelayList(urls).signAsync(signer)
+
+            client?.sendEvent(
+                event = event,
+                target = SendEventTarget.toNip65(),
+                ackPolicy = AckPolicy.none(),
+            )
+
+            val kind = Kind.fromStd(KindStandard.INBOX_RELAYS);
+            val filter = Filter().kind(kind).author(signer.currentUser!!).limit(1u)
+            val target = ReqTarget.auto(listOf(filter))
+            val opts = SubscribeAutoCloseOptions().exitPolicy(ReqExitPolicy.ExitOnEose)
+
+            client?.subscribe(target = target, closeOn = opts)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to set msg relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun getMsgRelays(publicKey: PublicKey): List<RelayUrl> {
+        try {
+            val kind = Kind.fromStd(KindStandard.INBOX_RELAYS)
+            val filter = Filter().kind(kind).author(publicKey).limit(1u)
+            val events = client?.database()?.query(filter)
+
+            return nip17ExtractRelayList(events?.toVec()?.firstOrNull() ?: return emptyList())
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get msg relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun getRelayList(publicKey: PublicKey): Map<RelayUrl, RelayMetadata?> {
+        try {
+            val kind = Kind.fromStd(KindStandard.RELAY_LIST)
+            val filter = Filter().kind(kind).author(publicKey).limit(1u)
+            val events = client?.database()?.query(filter)
+
+            return extractRelayList(events?.toVec()?.firstOrNull() ?: return emptyMap())
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get relay list: ${e.message}", e)
+        }
+    }
+
+    suspend fun getChatRooms(): Set<Room>? {
+        try {
+            val userPubkey = signer.currentUser ?: throw IllegalStateException("User not signed in")
+            val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA)
+            val kTag = SingleLetterTag.lowercase(Alphabet.K)
+
+            // Get all events sent by the user
+            val filter = Filter().kind(kind).author(userPubkey).customTag(kTag, "dm")
+            val events = client?.database()?.query(filter)
+
+            // Collect rooms
+            val roomsMap: MutableMap<Long, Room> = mutableMapOf()
+
+            events
+                ?.toVec()
+                ?.map { UnsignedEvent.fromJson(it.content()) }
+                ?.filter { it.tags().publicKeys().isNotEmpty() }
+                ?.forEach { event ->
+                    val newRoom = Room.new(rumor = event, userPubkey = userPubkey)
+                    val existingRoom = roomsMap[newRoom.id]
+
+                    // Check if the room already exists
+                    if (existingRoom == null || newRoom.createdAt.asSecs() > existingRoom.createdAt.asSecs()) {
+                        val filter =
+                            Filter().kind(kind).author(userPubkey).pubkeys(newRoom.members.toList())
+
+                        // Determine if it's an ongoing room
+                        val isOngoing = client?.database()?.query(filter)?.isEmpty() == false
+
+                        // Append room to map
+                        roomsMap[newRoom.id] =
+                            if (isOngoing) newRoom.copy(kind = RoomKind.Ongoing) else newRoom
+                    }
+                }
+
+            return roomsMap.values.sortedByDescending { it.createdAt.asSecs() }.toSet()
+        } catch (e: Exception) {
+            println("Failed to get chat rooms: ${e.message}")
+            return null
+        }
+    }
+
+    suspend fun getChatRoomMessages(roomId: Long): List<UnsignedEvent> {
+        try {
+            val kind = Kind.fromStd(KindStandard.APPLICATION_SPECIFIC_DATA)
+            val filter = Filter().kind(kind).reference(roomId.toString())
+            val events = client?.database()?.query(filter)
+
+            // Merge the events
+            return events
+                ?.toVec()
+                ?.map { UnsignedEvent.fromJson(it.content()) }
+                ?.sortedByDescending { it.createdAt().asSecs() } ?: emptyList()
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to get chat room messages: ${e.message}", e)
+        }
+    }
+
+    suspend fun chatRoomConnect(members: List<PublicKey>): Map<PublicKey, List<RelayUrl>> {
+        try {
+            val results = mutableMapOf<PublicKey, MutableList<RelayUrl>>()
+
+            members.forEach { member ->
+                results[member] = mutableListOf<RelayUrl>()
+                val kind = Kind.fromStd(KindStandard.INBOX_RELAYS)
+                val filter = Filter().kind(kind).author(member).limit(1u)
+
+                val stream = client?.streamEvents(
+                    target = ReqTarget.auto(listOf(filter)),
+                    id = "room-${member.toBech32().substring(0, 10)}",
+                    timeout = Duration.parse("3s"),
+                    policy = ReqExitPolicy.ExitOnEose
+                )
+
+                stream?.next()?.let { res ->
+                    if (res.event != null) {
+                        // Connect to the msg relays
+                        connectMsgRelays(res.event!!)
+                        // Mark the member as connected
+                        results[member]?.add(res.relayUrl)
+                    }
+                }
+            }
+
+            return results
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun connectMsgRelays(event: Event) {
+        try {
+            val urls = nip17ExtractRelayList(event);
+            for (url in urls) {
+                if (client?.relay(url) == null) {
+                    client?.addRelay(url)
+                    client?.connectRelay(url)
+                }
+            }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to connect to relays: ${e.message}", e)
+        }
+    }
+
+    suspend fun sendMessage(
+        to: List<PublicKey>,
+        content: String,
+        subject: String? = null,
+        replies: List<EventId> = emptyList(),
+        onRumorCreated: ((UnsignedEvent) -> Unit)? = null,
+    ) {
+        try {
+            val currentUser =
+                signer.currentUser ?: throw IllegalStateException("User not signed in")
+
+            val tags = mutableListOf<Tag>()
+
+            // Add a subject tag if provided
+            if (subject != null) {
+                tags.add(Tag.custom(TagKind.Subject, listOf(subject)))
+            }
+
+            // Add event tags for replies
+            if (replies.isNotEmpty()) {
+                replies.forEach { replyId ->
+                    tags.add(Tag.event(replyId))
+                }
+            }
+
+            // Add public key tags for each recipient
+            to.forEach { pubkey ->
+                if (pubkey != currentUser) {
+                    tags.add(Tag.publicKey(pubkey))
+                }
+            }
+
+            for (receiver in listOf(currentUser) + to) {
+                // Construct the rumor event
+                // NEVER SIGN this event with the current user signer
+                val rumor = EventBuilder
+                    .privateMsgRumor(receiver = receiver, message = content)
+                    .tags(tags)
+                    .build(currentUser)
+                    // Ensure the event ID is set
+                    .ensureId()
+
+                // Emit the rumor to the chat screen
+                if (receiver == currentUser) {
+                    onRumorCreated?.invoke(rumor)
+                }
+
+                // Construct the gift wrap event
+                val gift = giftWrapAsync(
+                    signer = signer,
+                    receiverPubkey = receiver,
+                    rumor = rumor,
+                    extraTags = listOf(
+                        Tag.custom(TagKind.Unknown("k"), listOf("14"))
+                    )
+                )
+
+                // Send the event to receiver's NIP-17 relays
+                val output = client?.sendEvent(
+                    event = gift,
+                    target = SendEventTarget.toNip17(),
+                    ackPolicy = AckPolicy.none(),
+                    authenticationTimeout = Duration.parse("2s")
+                )
+
+                if (output != null) {
+                    // Keep track of sent events
+                    sentEvents[output.id] = emptyList()
+                    if (rumor.id() != null) rumorMap[rumor.id()!!] = output.id
+
+                    // Collect failed outputs
+                    output.failed.forEach { (relayUrl, reason) ->
+                        println("Failed to send event to relay $relayUrl: $reason")
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to send message: ${e.message}", e)
+        }
+    }
+
+    suspend fun profileFromAddress(client: HttpClient, address: Nip05Address): Nip05Profile {
+        try {
+            val response: HttpResponse = client.get(address.url())
+            val bodyString: String = response.body()
+
+            return Nip05Profile.fromJson(address, bodyString)
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to fetch profile from address: ${e.message}", e)
+        }
+    }
+
+    suspend fun searchByAddress(query: String): PublicKey {
+        try {
+            val address = Nip05Address.parse(query)
+            val profile = profileFromAddress(HttpClient(), address)
+
+            return profile.publicKey()
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to search address: ${e.message}", e)
+        }
+    }
+
+    suspend fun searchByNostr(query: String): List<PublicKey> {
+        try {
+            // Add search relay
+            val searchRelay = RelayUrl.parse("wss://antiprimal.net")
+            if (client?.relay(searchRelay) == null) {
+                client?.addRelay(url = searchRelay, capabilities = RelayCapabilities.read())
+                client?.connectRelay(searchRelay)
+            }
+
+            val kinds = listOf(Kind.fromStd(KindStandard.METADATA))
+            val filter = Filter().kinds(kinds).search(query).limit(10u)
+            val target =
+                ReqTarget.manual(mapOf(RelayUrl.parse("wss://antiprimal.net") to listOf(filter)))
+
+            val stream = client?.streamEvents(
+                target = target,
+                id = "search",
+                timeout = Duration.parse("4s"),
+                policy = ReqExitPolicy.ExitOnEose
+            )
+
+            // Collect the results
+            val results = mutableListOf<PublicKey>()
+
+            // Keep searching until the stream is closed or timeout
+            stream?.next()?.let { event ->
+                if (event.event != null) {
+                    results.add(event.event!!.author())
+                }
+            }
+
+            return results
+        } catch (e: Exception) {
+            throw IllegalStateException("Failed to search nostr: ${e.message}", e)
+        }
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/NostrViewModel.kt

@@ -0,0 +1,533 @@
+package su.reya.coop
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import io.ktor.client.HttpClient
+import io.ktor.client.plugins.contentnegotiation.ContentNegotiation
+import io.ktor.serialization.kotlinx.json.json
+import kotlinx.coroutines.NonCancellable
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.receiveAsFlow
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import kotlinx.coroutines.withTimeoutOrNull
+import kotlinx.serialization.json.Json
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.EventId
+import rust.nostr.sdk.Keys
+import rust.nostr.sdk.Metadata
+import rust.nostr.sdk.NostrConnect
+import rust.nostr.sdk.NostrConnectUri
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.RelayMetadata
+import rust.nostr.sdk.RelayUrl
+import rust.nostr.sdk.Tag
+import rust.nostr.sdk.UnsignedEvent
+import su.reya.coop.blossom.BlossomClient
+import su.reya.coop.storage.SecretStorage
+import kotlin.time.Clock
+import kotlin.time.Duration
+
+class NostrViewModel(
+    private val nostr: Nostr,
+    private val secretStore: SecretStorage
+) : ViewModel() {
+    private val _emptySecret = MutableStateFlow<Boolean?>(null)
+    val emptySecret = _emptySecret.asStateFlow()
+
+    private val _isCreating = MutableStateFlow(false)
+    val isCreating = _isCreating.asStateFlow()
+
+    private val _chatRooms = MutableStateFlow<Set<Room>>(emptySet())
+    val chatRooms = _chatRooms.asStateFlow()
+
+    private val _contactList = MutableStateFlow<Set<PublicKey>>(emptySet())
+    val contactList = _contactList.asStateFlow()
+
+    private val _isPartialProcessedGiftWrap = MutableStateFlow(false)
+    val isPartialProcessedGiftWrap = _isPartialProcessedGiftWrap.asStateFlow()
+
+    private val _isRelayListEmpty = MutableStateFlow(false)
+    val isRelayListEmpty = _isRelayListEmpty.asStateFlow()
+
+    private val _newEvents = MutableSharedFlow<UnsignedEvent>(extraBufferCapacity = 100)
+    val newEvents = _newEvents.asSharedFlow()
+
+    private val _sentReports = MutableStateFlow<Map<EventId, List<RelayUrl>>>(emptyMap())
+    val sentReport = _sentReports.asSharedFlow()
+
+    private val _errorEvents = Channel<String>(Channel.BUFFERED)
+    val errorEvents = _errorEvents.receiveAsFlow()
+
+    private val _metadataStore = mutableMapOf<PublicKey, MutableStateFlow<Metadata?>>()
+    private val metadataRequestChannel = Channel<PublicKey>(Channel.UNLIMITED)
+    private val seenPublicKeys = mutableSetOf<PublicKey>()
+
+    init {
+        startNotificationHandler()
+        startMetadataBatchHandler()
+        getCacheMetadata()
+        login()
+        observeSignerAndCheckRelays()
+    }
+
+    override fun onCleared() {
+        super.onCleared()
+        // Ensure all relays are disconnect
+        viewModelScope.launch {
+            withContext(NonCancellable) {
+                nostr.disconnect()
+            }
+        }
+    }
+
+    private fun showError(message: String) {
+        viewModelScope.launch {
+            _errorEvents.send(message)
+            if (isCreating.value) _isCreating.value = false
+        }
+    }
+
+    private fun startNotificationHandler() {
+        viewModelScope.launch {
+            // Wait until the client is ready
+            nostr.waitUntilInitialized()
+
+            nostr.handleNotifications(
+                onMetadataUpdate = { pubkey, metadata ->
+                    updateMetadata(pubkey, metadata)
+                },
+                onContactListUpdate = { contactList ->
+                    _contactList.value = contactList.toSet()
+                },
+                onSubscriptionClose = {
+                    getChatRooms()
+
+                    if (!_isPartialProcessedGiftWrap.value) {
+                        _isPartialProcessedGiftWrap.value = true
+                    }
+                },
+                onNewMessage = { event ->
+                    viewModelScope.launch {
+                        _newEvents.emit(event)
+                    }
+                },
+            )
+        }
+    }
+
+    private fun startMetadataBatchHandler() {
+        viewModelScope.launch {
+            // Wait until the client is ready
+            nostr.waitUntilInitialized()
+
+            val batch = mutableSetOf<PublicKey>()
+            val timeout = 500L // 500ms timeout for batching
+
+            while (true) {
+                val firstKey = metadataRequestChannel.receive()
+                batch.add(firstKey)
+                val lastFlushTime = Clock.System.now().toEpochMilliseconds()
+
+                while (batch.isNotEmpty()) {
+                    val nextKey = withTimeoutOrNull(timeout) {
+                        metadataRequestChannel.receive()
+                    }
+
+                    if (nextKey != null) {
+                        batch.add(nextKey)
+                    }
+
+                    val now = Clock.System.now().toEpochMilliseconds()
+                    if (batch.size >= 10 || (now - lastFlushTime) >= timeout || nextKey == null) {
+                        val keysToRequest = batch.toList()
+                        batch.clear()
+
+                        nostr.fetchMetadataBatch(keysToRequest)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun getCacheMetadata() {
+        viewModelScope.launch {
+            // Wait until the client is ready
+            nostr.waitUntilInitialized()
+
+            val results = nostr.getAllCacheMetadata()
+            results.forEach { (pubkey, metadata) ->
+                updateMetadata(pubkey, metadata)
+                seenPublicKeys.add(pubkey)
+            }
+        }
+    }
+
+    private fun login() {
+        viewModelScope.launch {
+            // Wait until the client is ready
+            nostr.waitUntilInitialized()
+
+            // Get user's signer secret
+            val secret = secretStore.get("user_signer")
+
+            // If no secret is found, show onboarding screen
+            when (secret) {
+                null -> {
+                    _emptySecret.value = true
+                    return@launch
+                }
+
+                else -> _emptySecret.value = false
+            }
+
+            // Handle different signer types
+            if (secret.startsWith("nsec1")) {
+                val keys = Keys.parse(secret)
+                nostr.setSigner(keys)
+            } else if (secret.startsWith("bunker://")) {
+                try {
+                    val appKeys = getOrInitAppKeys()
+                    val bunker = NostrConnectUri.parse(secret)
+                    val timeout = Duration.parse("50s") // 50 seconds timeout
+                    val remote =
+                        NostrConnect(uri = bunker, appKeys = appKeys, timeout = timeout, null)
+                    nostr.setSigner(remote)
+                } catch (e: Exception) {
+                    showError("Error: ${e.message}")
+                }
+            } else {
+                throw IllegalArgumentException("Invalid secret format: $secret")
+            }
+        }
+    }
+
+    private fun observeSignerAndCheckRelays() {
+        viewModelScope.launch {
+            while (true) {
+                val pubkey = nostr.signer.currentUser
+
+                if (pubkey != null) {
+                    delay(3000)
+                    val relays = nostr.getMsgRelays(pubkey)
+                    if (relays.isEmpty()) {
+                        _isRelayListEmpty.value = true
+                    }
+                    break
+                }
+
+                delay(1000)
+            }
+        }
+    }
+
+    private fun requestMetadata(pubkey: PublicKey) {
+        if (seenPublicKeys.add(pubkey)) {
+            viewModelScope.launch {
+                metadataRequestChannel.send(pubkey)
+            }
+        }
+    }
+
+    private fun updateMetadata(pubkey: PublicKey, metadata: Metadata) {
+        _metadataStore.getOrPut(pubkey) { MutableStateFlow(null) }.value = metadata
+    }
+
+    fun getMetadata(pubkey: PublicKey): StateFlow<Metadata?> {
+        val flow = _metadataStore.getOrPut(pubkey) { MutableStateFlow(null) }
+        if (flow.value == null) {
+            requestMetadata(pubkey)
+        }
+        return flow.asStateFlow()
+    }
+
+    fun currentUser(): PublicKey? {
+        return nostr.signer.currentUser
+    }
+
+    fun logout() {
+        viewModelScope.launch {
+            secretStore.clear("user_signer")
+            nostr.signer.switch(Keys.generate())
+            _emptySecret.value = true
+        }
+    }
+
+    fun dismissRelayWarning() {
+        _isRelayListEmpty.value = false
+    }
+
+    private suspend fun getOrInitAppKeys(): Keys {
+        val secret = secretStore.get("app_keys")
+
+        // If app keys are already stored, use them
+        if (secret != null) {
+            return Keys.parse(secret)
+        }
+
+        // Generate new app keys and save to the secret storage
+        val keys = Keys.generate()
+        secretStore.set("app_keys", keys.secretKey().toBech32())
+
+        return keys
+    }
+
+    fun createIdentity(
+        name: String,
+        bio: String?,
+        picture: ByteArray?,
+        contentType: String? = null
+    ) {
+        viewModelScope.launch {
+            try {
+                val keys = Keys.generate()
+                val secret = keys.secretKey().toBech32()
+                var avatarUrl = ""
+
+                // Set loading state
+                _isCreating.value = true
+
+                // Upload picture to Blossom
+                if (picture != null) {
+                    val blossom = BlossomClient(
+                        url = "https://blossom.band",
+                        client = HttpClient {
+                            install(ContentNegotiation) {
+                                json(Json {
+                                    ignoreUnknownKeys = true
+                                    prettyPrint = true
+                                    isLenient = true
+                                })
+                            }
+                        }
+                    )
+
+                    val descriptor = blossom.upload(
+                        file = picture,
+                        contentType = contentType,
+                        signer = keys
+                    )
+
+                    avatarUrl = descriptor?.url ?: ""
+                }
+
+                // Create identity
+                nostr.createIdentity(keys = keys, name = name, bio, picture = avatarUrl)
+
+                // Save secret to the secret storage
+                secretStore.set("user_signer", secret)
+
+                // Set an empty secret state
+                _emptySecret.value = false
+            } catch (e: Exception) {
+                showError("Error: ${e.message}")
+            }
+        }
+    }
+
+    suspend fun verifyIdentity(secret: String): PublicKey? {
+        if (secret.startsWith("nsec1")) {
+            val keys = Keys.parse(secret)
+            return keys.publicKey()
+        } else if (secret.startsWith("bunker://")) {
+            val appKeys = getOrInitAppKeys()
+            val bunker = NostrConnectUri.parse(secret)
+            val timeout = Duration.parse("50s") // 50 seconds timeout
+            val remote = NostrConnect(uri = bunker, appKeys, timeout, null)
+
+            // Show toast to ask user to approve the connection
+            showError("Please approve the connection.")
+
+            return remote.getPublicKeyAsync()
+        } else {
+            throw IllegalArgumentException("Invalid secret: $secret")
+        }
+    }
+
+    fun importIdentity(secret: String) {
+        viewModelScope.launch {
+            if (secret.startsWith("nsec1")) {
+                val keys = Keys.parse(secret)
+                nostr.setSigner(keys)
+                secretStore.set("user_signer", secret)
+                // Set an empty secret state
+                _emptySecret.value = false
+            } else if (secret.startsWith("bunker://")) {
+                try {
+                    val appKeys = getOrInitAppKeys()
+                    val bunker = NostrConnectUri.parse(secret)
+                    val timeout = Duration.parse("50s") // 50 seconds timeout
+                    val remote =
+                        NostrConnect(uri = bunker, appKeys = appKeys, timeout = timeout, null)
+                    nostr.setSigner(remote)
+                    secretStore.set("user_signer", secret)
+                    // Set an empty secret state
+                    _emptySecret.value = false
+                } catch (e: Exception) {
+                    showError("Error: ${e.message}")
+                }
+            } else {
+                showError("Please enter a valid Secret or Bunker URI.")
+            }
+        }
+    }
+
+    suspend fun useDefaultMsgRelayList() {
+        try {
+            val defaultRelays = nostr.getDefaultMsgRelayList()
+            nostr.setMsgRelays(defaultRelays)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+    }
+
+    suspend fun currentUserRelayList(): Map<RelayUrl, RelayMetadata?> {
+        try {
+            return nostr.getRelayList(nostr.signer.currentUser!!)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            return emptyMap()
+        }
+    }
+
+    suspend fun currentUserMsgRelayList(): List<RelayUrl> {
+        try {
+            return nostr.getMsgRelays(nostr.signer.currentUser!!)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+            return emptyList()
+        }
+    }
+
+    fun createChatRoom(to: List<PublicKey>): Long {
+        if (nostr.signer.currentUser == null) throw IllegalStateException("User not signed in")
+        if (to.isEmpty()) throw IllegalArgumentException("At least one recipient is required")
+
+        // Construct the rumor event
+        val rumor = EventBuilder
+            .privateMsgRumor(to.first(), "")
+            .tags(to.map { Tag.publicKey(it) })
+            .build(nostr.signer.currentUser!!)
+
+        // Create a room from the rumor event
+        val room = Room.new(rumor, nostr.signer.currentUser!!)
+        _chatRooms.value += room
+
+        return room.id
+    }
+
+    fun getChatRoom(id: Long): Room {
+        return chatRooms.value.firstOrNull { it.id == id }
+            ?: throw IllegalArgumentException("Room not found")
+    }
+
+    fun getChatRooms() {
+        viewModelScope.launch {
+            try {
+                _chatRooms.value = nostr.getChatRooms() ?: emptySet()
+            } catch (e: Exception) {
+                showError("Error: ${e.message}")
+            }
+        }
+    }
+
+    suspend fun refreshChatRooms() {
+        try {
+            _chatRooms.value = nostr.getChatRooms() ?: emptySet()
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+    }
+
+    suspend fun getChatRoomMessages(roomId: Long): List<UnsignedEvent> {
+        try {
+            return nostr.getChatRoomMessages(roomId)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+
+        return emptyList()
+    }
+
+    suspend fun chatRoomConnect(roomId: Long): Map<PublicKey, List<RelayUrl>> {
+        val room = getChatRoom(roomId)
+        val members = room.members
+
+        return runCatching {
+            nostr.chatRoomConnect(members.toList())
+        }.getOrElse { e ->
+            showError("Error: ${e.message}")
+            members.associateWith { emptyList<RelayUrl>() }
+        }
+    }
+
+    fun sendMessage(roomId: Long, message: String, replies: List<EventId> = emptyList()) {
+        viewModelScope.launch {
+            try {
+                val room = getChatRoom(roomId)
+                nostr.sendMessage(
+                    to = room.members.toList(),
+                    content = message,
+                    subject = room.subject,
+                    replies = replies,
+                    onRumorCreated = { event ->
+                        updateRoomList(roomId, event)
+                        viewModelScope.launch { _newEvents.emit(event) }
+                    },
+                )
+            } catch (e: Exception) {
+                showError("Error: ${e.message}")
+            }
+        }
+    }
+
+    fun isMessageSent(id: EventId): Boolean {
+        val giftWrapId = nostr.rumorMap[id]
+
+        if (giftWrapId != null) {
+            val isSent = nostr.sentEvents[giftWrapId]?.isNotEmpty() ?: false
+            return isSent
+        } else {
+            return false
+        }
+    }
+
+    private fun updateRoomList(roomId: Long, newMessage: UnsignedEvent) {
+        _chatRooms.value = _chatRooms.value.map { room ->
+            if (room.id == roomId) {
+                room.copy(lastMessage = newMessage.content(), createdAt = newMessage.createdAt())
+            } else {
+                room
+            }
+        }.toSet()
+    }
+
+    suspend fun searchByAddress(query: String): PublicKey? {
+        try {
+            return nostr.searchByAddress(query)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+        return null
+    }
+
+    suspend fun searchByNostr(query: String): List<PublicKey> {
+        try {
+            return nostr.searchByNostr(query)
+        } catch (e: Exception) {
+            showError("Error: ${e.message}")
+        }
+        return emptyList()
+    }
+}
+
+fun PublicKey.short(): String {
+    val bech32 = toBech32()
+    return bech32.substring(0, 6) + "..." + bech32.substring(bech32.length - 4)
+}

shared/src/commonMain/kotlin/su/reya/coop/Platform.kt

@@ -1,7 +0,0 @@
-package su.reya.coop
-
-interface Platform {
-    val name: String
-}
-
-expect fun getPlatform(): Platform

shared/src/commonMain/kotlin/su/reya/coop/Room.kt

@@ -0,0 +1,171 @@
+package su.reya.coop
+
+import kotlinx.datetime.DateTimeUnit
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.minus
+import kotlinx.datetime.number
+import kotlinx.datetime.toLocalDateTime
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.TagKind
+import rust.nostr.sdk.Timestamp
+import rust.nostr.sdk.UnsignedEvent
+import kotlin.time.Clock
+import kotlin.time.Instant
+
+enum class RoomKind {
+    Ongoing,
+    Request;
+
+    companion object {
+        fun default(): RoomKind = Request
+    }
+}
+
+data class Room(
+    val id: Long,
+    val createdAt: Timestamp,
+    val subject: String?,
+    val members: Set<PublicKey>,
+    val kind: RoomKind = RoomKind.default(),
+    val lastMessage: String? = null
+) : Comparable<Room> {
+    override fun compareTo(other: Room): Int {
+        return this.createdAt.asSecs().compareTo(other.createdAt.asSecs())
+    }
+
+    companion object {
+        fun new(rumor: UnsignedEvent, userPubkey: PublicKey): Room {
+            val id = rumor.roomId()
+            val createdAt = rumor.createdAt()
+            val subject = rumor.tags().find(TagKind.Subject)?.content()
+
+            // Collect the author's public key and all public keys from tags
+            // Also remove the user's public key from the list, current user is always a member
+            val pubkeys: MutableSet<PublicKey> = mutableSetOf()
+            pubkeys.add(rumor.author())
+            pubkeys.addAll(rumor.tags().publicKeys())
+            pubkeys.remove(userPubkey)
+
+            // Create a new Room instance
+            return Room(
+                id = id,
+                createdAt = createdAt,
+                subject = subject,
+                members = pubkeys as Set<PublicKey>,
+                lastMessage = rumor.content()
+            )
+        }
+    }
+
+    fun setKind(kind: RoomKind): Room {
+        return this.copy(kind = kind)
+    }
+
+    fun setCreatedAt(createdAt: Timestamp): Room {
+        return this.copy(createdAt = createdAt)
+    }
+
+    fun setSubject(subject: String?): Room {
+        return this.copy(subject = subject)
+    }
+
+    fun setLastMessage(message: String?): Room {
+        return this.copy(lastMessage = message)
+    }
+
+    fun isGroup(): Boolean {
+        return members.size > 1
+    }
+}
+
+fun UnsignedEvent.roomId(): Long {
+    // Collect the author's public key and all public keys from tags
+    val pubkeys: MutableList<PublicKey> = mutableListOf()
+    pubkeys.add(this.author())
+    pubkeys.addAll(this.tags().publicKeys())
+
+    // Sort and hash the list of public keys
+    val sortedUniqueKeys = pubkeys
+        .distinctBy { it.toBech32() }
+        .sortedBy { it.toBech32() }
+
+    return sortedUniqueKeys.hashCode().toLong()
+}
+
+fun Timestamp.ago(): String {
+    val SECONDS_IN_MINUTE = 60L
+    val MINUTES_IN_HOUR = 60L
+    val HOURS_IN_DAY = 24L
+    val DAYS_IN_MONTH = 30L
+
+    val inputInstant = Instant.fromEpochSeconds(this.asSecs().toLong())
+    val now = Clock.System.now()
+    val duration = now - inputInstant
+
+    return when {
+        duration.inWholeSeconds < SECONDS_IN_MINUTE -> "Now"
+        duration.inWholeMinutes < MINUTES_IN_HOUR -> "${duration.inWholeMinutes}m"
+        duration.inWholeHours < HOURS_IN_DAY -> "${duration.inWholeHours}h"
+        duration.inWholeDays < DAYS_IN_MONTH -> "${duration.inWholeDays}d"
+        else -> {
+            val localDateTime = inputInstant.toLocalDateTime(TimeZone.currentSystemDefault())
+            val month =
+                localDateTime.month.name.take(3).lowercase().replaceFirstChar { it.uppercase() }
+            val day = localDateTime.dayOfMonth.toString().padStart(2, '0')
+            "$month $day"
+        }
+    }
+}
+
+fun Timestamp.formatAsGroupHeader(): String {
+    val timeZone = TimeZone.currentSystemDefault()
+    val inputInstant = Instant.fromEpochSeconds(this.asSecs().toLong())
+    val inputDate = inputInstant.toLocalDateTime(timeZone).date
+
+    val now = Clock.System.now()
+    val today = now.toLocalDateTime(timeZone).date
+    val yesterday = today.minus(1, DateTimeUnit.DAY)
+
+    return when (inputDate) {
+        today -> "Today"
+        yesterday -> "Yesterday"
+        else -> {
+            val day = inputDate.day.toString().padStart(2, '0')
+            val month = inputDate.month.number.toString().padStart(2, '0')
+            val year = inputDate.year.toString().takeLast(2)
+            "$day/$month/$year"
+        }
+    }
+}
+
+fun Timestamp.humanReadable(): String {
+    val timeZone = TimeZone.currentSystemDefault()
+    val inputInstant = Instant.fromEpochSeconds(this.asSecs().toLong())
+    val inputDateTime = inputInstant.toLocalDateTime(timeZone)
+    val inputDate = inputDateTime.date
+
+    val now = Clock.System.now()
+    val today = now.toLocalDateTime(timeZone).date
+    val yesterday = today.minus(1, DateTimeUnit.DAY)
+
+    val hour = inputDateTime.hour
+    val minute = inputDateTime.minute.toString().padStart(2, '0')
+    val amPm = if (hour < 12) "AM" else "PM"
+    val hour12 = when {
+        hour == 0 -> 12
+        hour > 12 -> hour - 12
+        else -> hour
+    }
+    val timeFormat = "$hour12:$minute $amPm"
+
+    return when (inputDate) {
+        today -> "Today at $timeFormat"
+        yesterday -> "Yesterday at $timeFormat"
+        else -> {
+            val day = inputDateTime.day.toString().padStart(2, '0')
+            val month = inputDateTime.month.number.toString().padStart(2, '0')
+            val year = inputDateTime.year.toString().takeLast(2)
+            "$day/$month/$year, $timeFormat"
+        }
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/Signer.kt

@@ -0,0 +1,55 @@
+package su.reya.coop
+
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.UnsignedEvent
+
+class UniversalSigner(initialSigner: AsyncNostrSigner) : AsyncNostrSigner {
+    private val mutex = Mutex()
+    private var signer: AsyncNostrSigner = initialSigner
+
+    var currentUser: PublicKey? = null
+        private set
+
+    /**
+     * Get the current signer.
+     */
+    suspend fun get(): AsyncNostrSigner = mutex.withLock {
+        signer
+    }
+
+    /**
+     * Switch to a new signer.
+     */
+    suspend fun switch(newSigner: AsyncNostrSigner) = mutex.withLock {
+        signer = newSigner
+        currentUser = newSigner.getPublicKeyAsync()
+    }
+
+    override suspend fun getPublicKeyAsync(): PublicKey? {
+        return get().getPublicKeyAsync()
+    }
+
+    override suspend fun signEventAsync(unsignedEvent: UnsignedEvent): Event? {
+        return get().signEventAsync(unsignedEvent)
+    }
+
+    override suspend fun nip04EncryptAsync(publicKey: PublicKey, content: String): String {
+        return get().nip04EncryptAsync(publicKey, content)
+    }
+
+    override suspend fun nip04DecryptAsync(publicKey: PublicKey, encryptedContent: String): String {
+        return get().nip04DecryptAsync(publicKey, encryptedContent)
+    }
+
+    override suspend fun nip44EncryptAsync(publicKey: PublicKey, content: String): String {
+        return get().nip44EncryptAsync(publicKey, content)
+    }
+
+    override suspend fun nip44DecryptAsync(publicKey: PublicKey, payload: String): String {
+        return get().nip44DecryptAsync(publicKey, payload)
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/blossom/BlossomClient.kt

@@ -0,0 +1,83 @@
+package su.reya.coop.blossom
+
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.request.header
+import io.ktor.client.request.put
+import io.ktor.client.request.setBody
+import io.ktor.http.HeaderValue
+import io.ktor.http.HttpHeaders
+import io.ktor.http.HttpStatusCode
+import io.ktor.utils.io.core.toByteArray
+import okio.ByteString.Companion.toByteString
+import rust.nostr.sdk.AsyncNostrSigner
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.Timestamp
+import kotlin.io.encoding.Base64
+import kotlin.time.Duration
+
+class BlossomClient(
+    val url: String,
+    val client: HttpClient,
+) {
+    suspend fun upload(
+        file: ByteArray,
+        contentType: String? = null,
+        signer: AsyncNostrSigner? = null
+    ): BlobDescriptor? {
+        val url = "$url/upload"
+        val hash = file.toByteString().sha256().hex()
+        val fileHashes = listOf(hash)
+
+        val res = client.put(url) {
+            // Set body
+            setBody(file)
+
+            // Set the content type if provided
+            contentType?.let {
+                header(HttpHeaders.ContentType, it)
+            }
+
+            signer?.let {
+                val defaultAuth = defaultAuth(
+                    action = BlossomAuthorizationVerb.Upload,
+                    defaultContent = "Blossom upload authorization",
+                    defaultScope = BlossomAuthorizationScope.BlobSha256Hashes(fileHashes)
+                )
+                val authHeader = buildAuthHeader(it, defaultAuth)
+                header(HttpHeaders.Authorization, authHeader.value)
+            }
+        }
+
+        return when (res.status) {
+            HttpStatusCode.OK -> res.body<BlobDescriptor>()
+            else -> {
+                throw Exception("Failed to upload file: ${res.status}")
+            }
+        }
+    }
+
+    fun defaultAuth(
+        action: BlossomAuthorizationVerb,
+        defaultContent: String,
+        defaultScope: BlossomAuthorizationScope
+    ): BlossomAuthorization {
+        val expiration = Timestamp.now().addDuration(Duration.parse("300s"))
+        return BlossomAuthorization(
+            content = defaultContent,
+            expiration = expiration,
+            action = action,
+            scope = defaultScope
+        )
+    }
+
+    suspend fun buildAuthHeader(
+        signer: AsyncNostrSigner,
+        authz: BlossomAuthorization
+    ): HeaderValue {
+        val authEvent = EventBuilder.blossomAuth(authz).signAsync(signer)
+        val encodedAuth = Base64.encode(authEvent.asJson().toByteArray())
+        val value = "Nostr $encodedAuth"
+        return HeaderValue(value)
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/blossom/Bud01.kt

@@ -0,0 +1,92 @@
+package su.reya.coop.blossom
+
+import rust.nostr.sdk.EventBuilder
+import rust.nostr.sdk.Kind
+import rust.nostr.sdk.Tag
+import rust.nostr.sdk.Timestamp
+
+/**
+ * Represents the authorization data for accessing a Blossom server.
+ */
+data class BlossomAuthorization(
+    /**
+     * A human readable string explaining to the user what the events intended use is
+     */
+    val content: String,
+    /**
+     * A UNIX timestamp (in seconds) indicating when the authorization should be expired
+     */
+    val expiration: Timestamp,
+    /**
+     * The type of action authorized by the user
+     */
+    val action: BlossomAuthorizationVerb,
+    /**
+     * The scope of the authorization
+     */
+    val scope: BlossomAuthorizationScope,
+)
+
+/**
+ * The scope of a Blossom authorization event
+ */
+sealed class BlossomAuthorizationScope {
+    /**
+     * Authorizes access to blobs with the given SHA256 hashes.
+     */
+    data class BlobSha256Hashes(val hashes: List<String>) : BlossomAuthorizationScope()
+
+    /**
+     * Authorizes access to the given server URL.
+     */
+    data class ServerUrl(val url: String) : BlossomAuthorizationScope()
+
+    fun toTags(): List<Tag> {
+        return when (this) {
+            is BlobSha256Hashes -> hashes.map { hash ->
+                // "x" tag for blob hash
+                Tag.parse(listOf("x", hash))
+            }
+
+            is ServerUrl -> listOf(
+                // "server" tag for server URL
+                Tag.parse(listOf("server", url))
+            )
+        }
+    }
+}
+
+/**
+ * Represents the possible actions that can be authorized by a Blossom authorization event.
+ */
+enum class BlossomAuthorizationVerb(val value: String) {
+    Get("get"),
+    Upload("upload"),
+    List("list"),
+    Delete("delete");
+
+    override fun toString(): String = value
+}
+
+/**
+ * Extension functions for [BlossomAuthorization] and [EventBuilder].
+ */
+fun BlossomAuthorization.toTags(): List<Tag> {
+    val tags = mutableListOf<Tag>()
+    tags.addAll(scope.toTags())
+    tags.add(Tag.expiration(expiration))
+    // Add the 't' tag to say what this auth is for
+    tags.add(Tag.hashtag(action.toString()))
+    return tags
+}
+
+/**
+ * Blossom authorization event (Kind 24242)
+ *
+ * https://github.com/hzrd149/blossom/blob/master/buds/01.md
+ */
+fun EventBuilder.Companion.blossomAuth(authorization: BlossomAuthorization): EventBuilder {
+    // Kind 24242 is used for Blossom Auth
+    val kind = Kind(24242u)
+    return EventBuilder(kind, authorization.content).tags(authorization.toTags())
+}

shared/src/commonMain/kotlin/su/reya/coop/blossom/Bud02.kt

@@ -0,0 +1,27 @@
+package su.reya.coop.blossom
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class BlobDescriptor(
+    /**
+     * The URL at which the blob/file can be accessed
+     */
+    val url: String,
+    /**
+     * The SHA256 hash of the contents in the blob
+     */
+    val sha256: String,
+    /**
+     * The size of the blob/file, in bytes
+     */
+    val size: Long,
+    /**
+     * Mime type of the blob/file
+     */
+    val mimeType: String? = null,
+    /**
+     * The date at which the blob was uploaded, as a UNIX timestamp (in seconds)
+     */
+    val uploaded: ULong
+)

shared/src/commonMain/kotlin/su/reya/coop/storage/SecretStorage.kt

@@ -0,0 +1,8 @@
+package su.reya.coop.storage
+
+interface SecretStorage {
+    suspend fun get(key: String): String?
+    suspend fun set(key: String, value: String)
+    suspend fun clear(key: String)
+    suspend fun has(key: String): Boolean
+}

shared/src/iosMain/kotlin/su/reya/coop/Platform.ios.kt

@@ -1,9 +0,0 @@
-package su.reya.coop
-
-import platform.UIKit.UIDevice
-
-class IOSPlatform: Platform {
-    override val name: String = UIDevice.currentDevice.systemName() + " " + UIDevice.currentDevice.systemVersion
-}
-
-actual fun getPlatform(): Platform = IOSPlatform()