chore: refactor the global state and improve signer (#56)

* refactor

* update

* .

* rustfmt

* .

* .

* .

* .

* .

* add document

* .

* add logout

* handle error

* chore: update gpui

* adjust timeout

crates/auto_update/src/lib.rs

@@ -1,18 +1,15 @@
-use std::{
-    env::{self, consts::OS},
-    ffi::OsString,
-    path::PathBuf,
-};
+use std::env::consts::OS;
+use std::env::{self};
+use std::ffi::OsString;
+use std::path::PathBuf;
 
 use anyhow::{anyhow, Context as _, Error};
-use global::get_client;
+use global::shared_state;
 use gpui::{App, AppContext, Context, Entity, Global, SemanticVersion, Task};
 use nostr_sdk::prelude::*;
-use smol::{
-    fs::{self, File},
-    io::AsyncWriteExt,
-    process::Command,
-};
+use smol::fs::{self, File};
+use smol::io::AsyncWriteExt;
+use smol::process::Command;
 use tempfile::TempDir;
 
 struct GlobalAutoUpdate(Entity<AutoUpdater>);
@@ -129,10 +126,9 @@ impl AutoUpdater {
         self.set_status(AutoUpdateStatus::Downloading, cx);
 
         let task: Task<Result<(TempDir, PathBuf), Error>> = cx.background_spawn(async move {
-            let client = get_client();
             let ids = event.tags.event_ids().copied();
             let filter = Filter::new().ids(ids).kind(Kind::FileMetadata);
-            let events = client.database().query(filter).await?;
+            let events = shared_state().client.database().query(filter).await?;
 
             if let Some(event) = events.into_iter().find(|event| event.content == OS) {
                 let tag = event.tags.find(TagKind::Url).context("url not found")?;