Live reload for dev mode

bookmarks/views/reload.py

@@ -0,0 +1,63 @@
+import json
+import threading
+import uuid
+from pathlib import Path
+from queue import Empty, Queue
+
+from django.dispatch import receiver
+from django.http import StreamingHttpResponse
+from django.utils.autoreload import autoreload_started, file_changed
+
+_styles_dir = Path(__file__).resolve().parent.parent / "styles"
+_static_dir = Path(__file__).resolve().parent.parent / "static"
+
+_server_id = str(uuid.uuid4())
+
+_active_connections = set()
+_connections_lock = threading.Lock()
+
+
+def _event_stream():
+    client_queue = Queue()
+
+    with _connections_lock:
+        _active_connections.add(client_queue)
+
+    try:
+        data = json.dumps({"server_id": _server_id})
+        yield f"event: connected\ndata: {data}\n\n"
+
+        while True:
+            try:
+                data = client_queue.get(timeout=30)
+                yield f"event: file_change\ndata: {data}\n\n"
+            except Empty:
+                yield ": keepalive\n\n"
+    finally:
+        with _connections_lock:
+            _active_connections.discard(client_queue)
+
+
+def live_reload(request):
+    response = StreamingHttpResponse(_event_stream(), content_type="text/event-stream")
+    response["Cache-Control"] = "no-cache"
+    return response
+
+
+@receiver(autoreload_started)
+def handle_auto_reload(sender, **kwargs):
+    sender.watch_dir(_styles_dir, "**/*.css")
+    sender.watch_dir(_static_dir, "bundle.js")
+
+
+@receiver(file_changed)
+def handle_file_changed(sender, file_path, **kwargs):
+    print(f"File changed: {file_path}")
+    data = json.dumps({"file_path": str(file_path)})
+    with _connections_lock:
+        for queue in _active_connections:
+            queue.put(data)
+
+    # Return True for CSS/JS files to prevent Django server restart
+    if file_path.suffix in (".css", ".js"):
+        return True