优化调整

src-tauri/src/download_engine/engine.rs

@@ -761,7 +761,7 @@ impl DownloadEngine {
                 last_time = now;
 
                 // 更新任务状态 + 发送进度事件
-                let total_size = {
+                let (total_size, live_status) = {
                     let mut tasks = engine.inner.tasks.lock().unwrap_or_else(|e| e.into_inner());
                     if let Some(task) = tasks.get_mut(&id_monitor) {
                         task.completed_size = completed;
@@ -771,7 +771,10 @@ impl DownloadEngine {
                                 seg.completed = prog.load(Ordering::Relaxed);
                             }
                         }
-                        task.total_size
+                        // 读取任务实时状态而非硬编码 Active：
+                        // 暂停后监控循环 break 前可能发出的最后一次事件
+                        // 必须携带 Paused，否则前端会把任务状态覆盖回"下载中"
+                        (task.total_size, task.status.clone())
                     } else {
                         break;
                     }
@@ -784,7 +787,7 @@ impl DownloadEngine {
                         completed_size: completed,
                         total_size,
                         speed,
-                        status: TaskStatus::Active,
+                        status: live_status,
                     },
                 );
             }

src-tauri/src/download_engine/server.rs

@@ -9,6 +9,7 @@ use axum::{
     Router,
 };
 use serde::{Deserialize, Serialize};
+use tauri::{AppHandle, Emitter, Manager};
 
 use super::engine::DownloadEngine;
 use super::task::DownloadTask;
@@ -45,14 +46,18 @@ struct ErrorResponse {
 
 impl ExtensionServer {
     /// 启动 HTTP API 服务器（绑定到 127.0.0.1:port）
-    pub async fn start(engine: DownloadEngine, port: u16, secret: String) {
+    pub async fn start(engine: DownloadEngine, port: u16, secret: String, app_handle: AppHandle) {
         let addr: SocketAddr = format!("127.0.0.1:{}", port).parse().expect("无效端口");
 
         let app = Router::new()
             .route("/health", get(health))
             .route("/api/downloads", post(create_download).get(list_downloads))
             .route("/api/downloads/:id", axum::routing::delete(remove_download))
-            .with_state(AppState { engine, secret });
+            .with_state(AppState {
+                engine,
+                secret,
+                app_handle,
+            });
 
         let listener = match tokio::net::TcpListener::bind(&addr).await {
             Ok(l) => l,
@@ -74,6 +79,7 @@ impl ExtensionServer {
 struct AppState {
     engine: DownloadEngine,
     secret: String,
+    app_handle: AppHandle,
 }
 
 /// 鉴权检查：如果配置了 secret，校验 Bearer token
@@ -109,7 +115,14 @@ async fn create_download(
     }
 
     match state.engine.add_task(req.url, req.filename, req.dir, req.headers, true).await {
-        Ok(id) => Ok(Json(CreateDownloadResponse { id })),
+        Ok(id) => {
+            // 浏览器扩展发起下载：置前主窗口并通知前端跳到下载画面（替代原桌面通知）
+            crate::tray_menu::focus_main_window(&state.app_handle);
+            let _ = state
+                .app_handle
+                .emit(crate::constants::events::DOWNLOAD_EXTENSION_ADDED, ());
+            Ok(Json(CreateDownloadResponse { id }))
+        }
         Err(e) => Err((StatusCode::BAD_REQUEST, Json(ErrorResponse { error: e }))),
     }
 }