store config in database, macro for state access

src-tauri/src/main.rs

@@ -3,7 +3,8 @@
     windows_subsystem = "windows"
 )]
 
-use tauri::Manager;
+use tauri::{AppHandle, Manager};
+use once_cell::sync::OnceCell;
 
 mod config;
 mod errors;
@@ -16,6 +17,8 @@ mod tray;
 use state::AppState;
 
 
+pub static APP: OnceCell<AppHandle> = OnceCell::new();
+
 fn main() {
     let initial_state = match state::AppState::new() {
         Ok(state) => state,
@@ -31,8 +34,10 @@ fn main() {
             ipc::respond,
             ipc::get_session_status,
             ipc::save_credentials,
+            ipc::get_config,
         ])
         .setup(|app| {
+            APP.set(app.handle()).unwrap();
             let state = app.state::<AppState>();
             let config = state.config.read().unwrap();
             let addr = std::net::SocketAddrV4::new(config.listen_addr, config.listen_port);
@@ -51,4 +56,38 @@ fn main() {
             }
             _ => ()
         })
-}
+}
+
+
+macro_rules! get_state {
+    ($prop:ident as $name:ident) => {
+        use tauri::Manager;
+        let app = crate::APP.get().unwrap(); // as long as the app is running, this is fine
+        let state = app.state::<crate::state::AppState>();
+        let $name = state.$prop.read().unwrap(); // only panics if another thread has already panicked
+    };
+    (config.$prop:ident as $name:ident) => {
+        use tauri::Manager;
+        let app = crate::APP.get().unwrap();
+        let state = app.state::<crate::state::AppState>();
+        let config = state.config.read().unwrap();
+        let $name = config.$prop;
+    };
+
+    (mut $prop:ident as $name:ident) => {
+        use tauri::Manager;
+        let app = crate::APP.get().unwrap();
+        let state = app.state::<crate::state::AppState>();
+        let $name = state.$prop.write().unwrap();
+    };
+    (mut config.$prop:ident as $name:ident) => {
+        use tauri::Manager;
+        let app = crate::APP.get().unwrap();
+        let state = app.state::<crate::state::AppState>();
+        let config = state.config.write().unwrap();
+        let $name = config.$prop;
+    }
+}
+
+
+pub(crate) use get_state;