初始化web服务功能

src-tauri/src/web/event_bridge.rs

@@ -0,0 +1,52 @@
+use serde::Serialize;
+use tokio::sync::broadcast;
+
+#[derive(Clone, Debug, Serialize)]
+pub struct WebEvent {
+    pub channel: String,
+    pub payload: serde_json::Value,
+}
+
+pub struct WebEventBroadcaster {
+    sender: broadcast::Sender<WebEvent>,
+}
+
+impl WebEventBroadcaster {
+    pub fn new() -> Self {
+        let (sender, _) = broadcast::channel(4096);
+        Self { sender }
+    }
+
+    pub fn send(&self, channel: &str, payload: &impl Serialize) {
+        if self.sender.receiver_count() == 0 {
+            return;
+        }
+        if let Ok(value) = serde_json::to_value(payload) {
+            let _ = self.sender.send(WebEvent {
+                channel: channel.to_string(),
+                payload: value,
+            });
+        }
+    }
+
+    pub fn subscribe(&self) -> broadcast::Receiver<WebEvent> {
+        self.sender.subscribe()
+    }
+
+    pub fn has_subscribers(&self) -> bool {
+        self.sender.receiver_count() > 0
+    }
+}
+
+/// Unified event emission: sends to both Tauri webview and Web clients.
+pub fn emit_event(
+    app: &tauri::AppHandle,
+    event: &str,
+    payload: impl Serialize + Clone,
+) {
+    use tauri::{Emitter, Manager};
+    let _ = app.emit(event, payload.clone());
+    if let Some(web) = app.try_state::<WebEventBroadcaster>() {
+        web.send(event, &payload);
+    }
+}