wip: refactor

crates/chat/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "chat"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+common = { path = "../common" }
+state = { path = "../state" }
+
+gpui.workspace = true
+nostr-sdk.workspace = true
+anyhow.workspace = true
+itertools.workspace = true
+smol.workspace = true

crates/chat/src/inbox.rs

@@ -0,0 +1,59 @@
+use common::utils::room_hash;
+use gpui::{AsyncApp, Context, Entity, Task};
+use itertools::Itertools;
+use nostr_sdk::prelude::*;
+use state::get_client;
+use std::cmp::Reverse;
+
+use crate::room::Room;
+
+pub struct Inbox {
+    pub rooms: Vec<Entity<Room>>,
+    pub is_loading: bool,
+}
+
+impl Inbox {
+    pub fn new() -> Self {
+        Self {
+            rooms: vec![],
+            is_loading: true,
+        }
+    }
+
+    pub fn get_room_ids(&self, cx: &Context<Self>) -> Vec<u64> {
+        self.rooms.iter().map(|room| room.read(cx).id).collect()
+    }
+
+    pub fn load(&mut self, cx: AsyncApp) -> Task<Result<Vec<Event>, Error>> {
+        cx.background_executor().spawn(async move {
+            let client = get_client();
+            let signer = client.signer().await?;
+            let public_key = signer.get_public_key().await?;
+
+            let filter = Filter::new()
+                .kind(Kind::PrivateDirectMessage)
+                .author(public_key);
+
+            // Get all DM events from database
+            let events = client.database().query(filter).await?;
+
+            // Filter result
+            // - Get unique rooms only
+            // - Sorted by created_at
+            let result = events
+                .into_iter()
+                .filter(|ev| ev.tags.public_keys().peekable().peek().is_some())
+                .unique_by(|ev| room_hash(&ev.tags))
+                .sorted_by_key(|ev| Reverse(ev.created_at))
+                .collect::<Vec<_>>();
+
+            Ok(result)
+        })
+    }
+}
+
+impl Default for Inbox {
+    fn default() -> Self {
+        Self::new()
+    }
+}

crates/chat/src/lib.rs

@@ -0,0 +1,3 @@
+pub mod inbox;
+pub mod registry;
+pub mod room;

crates/chat/src/registry.rs

@@ -0,0 +1,142 @@
+use anyhow::Error;
+use common::utils::{compare, room_hash};
+use gpui::{App, AppContext, Entity, Global, WeakEntity};
+use nostr_sdk::prelude::*;
+use state::get_client;
+
+use crate::{inbox::Inbox, room::Room};
+
+pub struct ChatRegistry {
+    inbox: Entity<Inbox>,
+}
+
+impl Global for ChatRegistry {}
+
+impl ChatRegistry {
+    pub fn set_global(cx: &mut App) {
+        let inbox = cx.new(|_| Inbox::default());
+
+        cx.observe_new::<Room>(|this, _window, cx| {
+            // Get all pubkeys to load metadata
+            let pubkeys = this.get_pubkeys();
+
+            cx.spawn(|weak_model, mut async_cx| async move {
+                let query: Result<Vec<(PublicKey, Metadata)>, Error> = async_cx
+                    .background_executor()
+                    .spawn(async move {
+                        let client = get_client();
+                        let mut profiles = Vec::new();
+
+                        for public_key in pubkeys.into_iter() {
+                            let query = client.database().metadata(public_key).await?;
+                            let metadata = query.unwrap_or_default();
+
+                            profiles.push((public_key, metadata));
+                        }
+
+                        Ok(profiles)
+                    })
+                    .await;
+
+                if let Ok(profiles) = query {
+                    if let Some(model) = weak_model.upgrade() {
+                        _ = async_cx.update_entity(&model, |model, cx| {
+                            for profile in profiles.into_iter() {
+                                model.set_metadata(profile.0, profile.1);
+                            }
+                            cx.notify();
+                        });
+                    }
+                }
+            })
+            .detach();
+        })
+        .detach();
+
+        cx.set_global(Self { inbox });
+    }
+
+    pub fn load(&mut self, cx: &mut App) {
+        self.inbox.update(cx, |this, cx| {
+            let task = this.load(cx.to_async());
+
+            cx.spawn(|this, mut async_cx| async move {
+                if let Some(inbox) = this.upgrade() {
+                    if let Ok(events) = task.await {
+                        _ = async_cx.update_entity(&inbox, |this, cx| {
+                            let current_rooms = this.get_room_ids(cx);
+                            let items: Vec<Entity<Room>> = events
+                                .into_iter()
+                                .filter_map(|ev| {
+                                    let id = room_hash(&ev.tags);
+                                    // Filter all seen events
+                                    if !current_rooms.iter().any(|h| h == &id) {
+                                        Some(cx.new(|_| Room::parse(&ev)))
+                                    } else {
+                                        None
+                                    }
+                                })
+                                .collect();
+
+                            this.rooms.extend(items);
+                            this.is_loading = false;
+
+                            cx.notify();
+                        });
+                    }
+                }
+            })
+            .detach();
+        });
+    }
+
+    pub fn inbox(&self) -> WeakEntity<Inbox> {
+        self.inbox.downgrade()
+    }
+
+    pub fn get_room(&self, id: &u64, cx: &App) -> Option<WeakEntity<Room>> {
+        self.inbox
+            .read(cx)
+            .rooms
+            .iter()
+            .find(|model| &model.read(cx).id == id)
+            .map(|model| model.downgrade())
+    }
+
+    pub fn new_room(&mut self, room: Room, cx: &mut App) {
+        let room = cx.new(|_| room);
+
+        self.inbox.update(cx, |this, cx| {
+            if !this.rooms.iter().any(|r| r.read(cx) == room.read(cx)) {
+                this.rooms.insert(0, room);
+                cx.notify();
+            }
+        })
+    }
+
+    pub fn new_room_message(&mut self, event: Event, cx: &mut App) {
+        let mut pubkeys: Vec<_> = event.tags.public_keys().copied().collect();
+        pubkeys.push(event.pubkey);
+
+        self.inbox.update(cx, |this, cx| {
+            if let Some(room) = this.rooms.iter().find(|room| {
+                let all_keys = room.read(cx).get_pubkeys();
+                compare(&all_keys, &pubkeys)
+            }) {
+                room.update(cx, |this, cx| {
+                    this.new_messages.push(event);
+                    cx.notify();
+                })
+            } else {
+                let room = cx.new(|_| Room::parse(&event));
+
+                self.inbox.update(cx, |this, cx| {
+                    this.rooms.insert(0, room);
+                    cx.notify();
+                })
+            }
+
+            cx.notify();
+        })
+    }
+}

crates/chat/src/room.rs

@@ -0,0 +1,132 @@
+use common::{
+    profile::NostrProfile,
+    utils::{compare, random_name, room_hash},
+};
+use gpui::SharedString;
+use nostr_sdk::prelude::*;
+
+#[derive(Debug)]
+pub struct Room {
+    pub id: u64,
+    pub title: Option<SharedString>,
+    pub owner: NostrProfile,        // Owner always match current user
+    pub members: Vec<NostrProfile>, // Extract from event's tags
+    pub last_seen: Timestamp,
+    pub is_group: bool,
+    pub new_messages: Vec<Event>, // Hold all new messages
+}
+
+impl PartialEq for Room {
+    fn eq(&self, other: &Self) -> bool {
+        let mut pubkeys: Vec<PublicKey> = self.members.iter().map(|m| m.public_key()).collect();
+        pubkeys.push(self.owner.public_key());
+
+        let mut pubkeys2: Vec<PublicKey> = other.members.iter().map(|m| m.public_key()).collect();
+        pubkeys2.push(other.owner.public_key());
+
+        compare(&pubkeys, &pubkeys2)
+    }
+}
+
+impl Room {
+    pub fn new(
+        id: u64,
+        owner: NostrProfile,
+        members: Vec<NostrProfile>,
+        title: Option<SharedString>,
+        last_seen: Timestamp,
+    ) -> Self {
+        let is_group = members.len() > 1;
+        let title = if title.is_none() {
+            Some(random_name(2).into())
+        } else {
+            title
+        };
+
+        Self {
+            id,
+            owner,
+            members,
+            title,
+            last_seen,
+            is_group,
+            new_messages: vec![],
+        }
+    }
+
+    /// Convert nostr event to room
+    pub fn parse(event: &Event) -> Room {
+        let id = room_hash(&event.tags);
+        let last_seen = event.created_at;
+
+        let owner = NostrProfile::new(event.pubkey, Metadata::default());
+        let members: Vec<NostrProfile> = event
+            .tags
+            .public_keys()
+            .copied()
+            .map(|public_key| NostrProfile::new(public_key, Metadata::default()))
+            .collect();
+
+        let title = if let Some(tag) = event.tags.find(TagKind::Title) {
+            tag.content().map(|s| s.to_owned().into())
+        } else {
+            None
+        };
+
+        Self::new(id, owner, members, title, last_seen)
+    }
+
+    /// Set contact's metadata by public key
+    pub fn set_metadata(&mut self, public_key: PublicKey, metadata: Metadata) {
+        if self.owner.public_key() == public_key {
+            self.owner.metadata(&metadata);
+        }
+
+        for member in self.members.iter_mut() {
+            if member.public_key() == public_key {
+                member.metadata(&metadata);
+            }
+        }
+    }
+
+    /// Get room's member by public key
+    pub fn member(&self, public_key: &PublicKey) -> Option<NostrProfile> {
+        if &self.owner.public_key() == public_key {
+            Some(self.owner.clone())
+        } else {
+            self.members
+                .iter()
+                .find(|m| &m.public_key() == public_key)
+                .cloned()
+        }
+    }
+
+    /// Get room's display name
+    pub fn name(&self) -> String {
+        if self.members.len() <= 2 {
+            self.members
+                .iter()
+                .map(|profile| profile.name())
+                .collect::<Vec<String>>()
+                .join(", ")
+        } else {
+            let name = self
+                .members
+                .iter()
+                .take(2)
+                .map(|profile| profile.name())
+                .collect::<Vec<String>>()
+                .join(", ");
+
+            format!("{}, +{}", name, self.members.len() - 2)
+        }
+    }
+
+    /// Get all public keys from room's contacts
+    pub fn get_pubkeys(&self) -> Vec<PublicKey> {
+        let mut pubkeys: Vec<_> = self.members.iter().map(|m| m.public_key()).collect();
+        pubkeys.push(self.owner.public_key());
+
+        pubkeys
+    }
+}