feat: watch linux theme changed (#7781)

* feat: add Linux theme change notifications and update dark-light dependency

* fix: remove unused tauri Emitter import

* update changelog

* fix: clippy

* fix: pnpm format

src-tauri/src/core/notification.rs

@@ -16,13 +16,30 @@ pub enum FrontendEvent<'a> {
     RefreshVerge,
     RefreshProfiles,
     RefreshProxyConfig,
-    NoticeMessage { status: &'a str, message: String },
-    ProfileChanged { current_profile_id: &'a String },
-    TimerUpdated { profile_index: &'a String },
-    ProfileUpdateStarted { uid: &'a String },
-    ProfileUpdateCompleted { uid: &'a String },
-    RunStateChanged { state: serde_json::Value },
+    NoticeMessage {
+        status: &'a str,
+        message: String,
+    },
+    ProfileChanged {
+        current_profile_id: &'a String,
+    },
+    TimerUpdated {
+        profile_index: &'a String,
+    },
+    ProfileUpdateStarted {
+        uid: &'a String,
+    },
+    ProfileUpdateCompleted {
+        uid: &'a String,
+    },
+    RunStateChanged {
+        state: serde_json::Value,
+    },
     PendingFailuresChanged,
+    #[cfg(target_os = "linux")]
+    ThemeChanged {
+        theme: tauri::Theme,
+    },
 }
 
 /// Operation associated with a pending failure.
@@ -279,6 +296,8 @@ impl NotificationSystem {
             FrontendEvent::ProfileUpdateCompleted { uid } => ("profile-update-completed", Ok(json!({ "uid": uid }))),
             FrontendEvent::RunStateChanged { state } => ("verge://run-state-changed", Ok(state)),
             FrontendEvent::PendingFailuresChanged => ("verge://pending-failures-changed", Ok(serde_json::Value::Null)),
+            #[cfg(target_os = "linux")]
+            FrontendEvent::ThemeChanged { theme } => ("tauri://theme-changed", serde_json::to_value(theme)),
         }
     }
 

src-tauri/src/utils/resolve/mod.rs

@@ -40,6 +40,8 @@ pub fn resolve_setup_sync() {
     AsyncHandler::spawn(|| async {
         AsyncHandler::spawn_blocking(init_scheme);
         AsyncHandler::spawn_blocking(init_embed_server);
+        #[cfg(target_os = "linux")]
+        AsyncHandler::spawn_blocking(watch_linux_theme_changed);
     });
 }
 
@@ -111,6 +113,30 @@ pub(super) fn init_embed_server() {
     server::embed_server();
 }
 
+#[cfg(target_os = "linux")]
+pub(crate) fn watch_linux_theme_changed() {
+    match dark_light::subscribe() {
+        Ok(watcher) => {
+            for mode in watcher.iter() {
+                use crate::core::notification;
+
+                let theme = match mode {
+                    dark_light::Mode::Light => tauri::Theme::Light,
+                    dark_light::Mode::Dark => tauri::Theme::Dark,
+                    dark_light::Mode::Unspecified => tauri::Theme::Light, // fallback to light
+                };
+                notification::NotificationSystem::send_event(
+                    Handle::app_handle().clone(),
+                    notification::FrontendEvent::ThemeChanged { theme },
+                );
+            }
+        }
+        Err(e) => {
+            logging_error!(Type::Setup, "Fail to watch linux theme changed: {}", e);
+        }
+    }
+}
+
 pub(super) async fn init_resources() {
     logging_error!(Type::Setup, init::init_resources().await);
 }