feat: config hot-reload — save restarts services automatically

api.go

@@ -138,6 +138,19 @@ func (s *Server) handleConfig(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+// handleConfigReload restarts internal services with the current config.
+// POST /api/config/reload
+func (s *Server) handleConfigReload(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		jsonResponse(w, http.StatusMethodNotAllowed, APIResponse{Error: "method not allowed"})
+		return
+	}
+	if s.onReload != nil {
+		s.onReload()
+	}
+	jsonResponse(w, http.StatusOK, APIResponse{Success: true, Data: "reloaded"})
+}
+
 // handleStream proxies MJPEG streams from go2rtc to avoid cross-origin issues.
 // GET /stream/{cam_id}?type=sub  (default: sub stream via go2rtc)
 func (s *Server) handleStream(w http.ResponseWriter, r *http.Request) {

main.go

@@ -77,6 +77,25 @@ func main() {
 
 	// Start the HTTP server (main port, with auth).
 	app.server, _ = NewServer(cfg)
+	app.server.onReload = func() {
+		log.Println("Config reload — restarting services...")
+		if app.go2rtc != nil { app.go2rtc.Stop() }
+		if app.snapshots != nil { app.snapshots.StopAll() }
+		if app.recorder != nil { app.recorder.StopAll() }
+		// Restart with the updated config from the server's in-memory copy.
+		liveCfg := app.server.appConfig
+		if liveCfg.Go2RTC.Enabled {
+			app.go2rtc = NewGo2RTCManager(liveCfg.Go2RTC)
+			app.go2rtc.Start(liveCfg.Cameras)
+		}
+		snaps := NewSnapshotEngine(liveCfg.Storage)
+		snaps.StartAll(liveCfg.Cameras)
+		app.snapshots = snaps
+		rec := NewRecorderManager(liveCfg.Storage)
+		rec.StartAll(liveCfg.Cameras)
+		app.recorder = rec
+		log.Println("Config reload — services restarted.")
+	}
 	errCh := make(chan error, 1)
 	go func() {
 		errCh <- app.server.ListenAndServe()

public/app.js

@@ -378,14 +378,16 @@ document.getElementById('btn-save').addEventListener('click', async () => {
         });
         const j = await r.json();
         if (j.success) {
-            // Reload cameras from the server (in-memory config is now updated).
+            // Reload cameras from the server.
             await loadCameras();
             renderLiveGrid();
             renderPlaybackCameras();
             renderCameraCards();
-            status.textContent = '✅ Cameras saved! Switching to Live Wall...';
+            status.textContent = '✅ Saved! Restarting services...';
             status.style.color = 'var(--green)';
-            setTimeout(() => switchTab('live'), 800);
+            // Trigger backend reload of cameras.
+            try { await fetch(API + '/config/reload', { method: 'POST' }); } catch(e) {}
+            setTimeout(() => switchTab('live'), 1500);
         } else {
             status.textContent = '❌ Save failed: ' + j.error;
             status.style.color = 'var(--red)';

server.go

@@ -28,6 +28,7 @@ type Server struct {
 	appConfig *Config
 	mu       sync.RWMutex
 	sessions *SessionStore
+	onReload func() // called when config is saved via API
 }
 
 // NewServer creates and configures the HTTP server.
@@ -116,6 +117,7 @@ func (s *Server) registerRoutes() {
 	s.mux.HandleFunc("/api/cameras", s.handleCameras)
 	s.mux.HandleFunc("/api/cameras/", s.handleCameraByID)
 	s.mux.HandleFunc("/api/config", s.handleConfig)
+	s.mux.HandleFunc("/api/config/reload", s.handleConfigReload)
 	s.mux.HandleFunc("/api/scan", s.handleScan)
 	s.mux.HandleFunc("/api/status", s.handleStatus)
 	s.mux.HandleFunc("/api/recordings", s.handleRecordings)