cognee cli - add "-ui" flag to start ui server

cognee/cli/_cognee.py

@@ -51,6 +51,31 @@ class DebugAction(argparse.Action):
         fmt.note("Debug mode enabled. Full stack traces will be shown.")
 
 
+class UiAction(argparse.Action):
+    def __init__(
+        self,
+        option_strings: Sequence[str],
+        dest: Any = argparse.SUPPRESS,
+        default: Any = argparse.SUPPRESS,
+        help: str = None,
+    ) -> None:
+        super(UiAction, self).__init__(
+            option_strings=option_strings, dest=dest, default=default, nargs=0, help=help
+        )
+
+    def __call__(
+        self,
+        parser: argparse.ArgumentParser,
+        namespace: argparse.Namespace,
+        values: Any,
+        option_string: str = None,
+    ) -> None:
+        # Set a flag to indicate UI should be started
+        global ACTION_EXECUTED
+        ACTION_EXECUTED = True
+        namespace.start_ui = True
+
+
 # Debug functionality is now in cognee.cli.debug module
 
 
@@ -97,6 +122,11 @@ def _create_parser() -> tuple[argparse.ArgumentParser, Dict[str, SupportsCliComm
         action=DebugAction,
         help="Enable debug mode to show full stack traces on exceptions",
     )
+    parser.add_argument(
+        "-ui",
+        action=UiAction,
+        help="Start the cognee web UI interface",
+    )
 
     subparsers = parser.add_subparsers(title="Available commands", dest="command")
 
@@ -140,6 +170,44 @@ def main() -> int:
     parser, installed_commands = _create_parser()
     args = parser.parse_args()
 
+    # Handle UI flag
+    if hasattr(args, 'start_ui') and args.start_ui:
+        try:
+            from cognee import start_ui
+            fmt.echo("Starting cognee UI...")
+            server = start_ui(
+                host="localhost",
+                port=3001,
+                open_browser=True
+            )
+            
+            if server:
+                fmt.success("UI server started successfully!")
+                fmt.echo("The interface is available at: http://localhost:3001")
+                fmt.note("Press Ctrl+C to stop the server...")
+                
+                try:
+                    # Keep the server running
+                    import time
+                    while server.poll() is None:  # While process is still running
+                        time.sleep(1)
+                except KeyboardInterrupt:
+                    fmt.echo("\nStopping UI server...")
+                    server.terminate()
+                    server.wait()
+                    fmt.success("UI server stopped.")
+                
+                return 0
+            else:
+                fmt.error("Failed to start UI server. Check the logs above for details.")
+                return 1
+                
+        except Exception as ex:
+            fmt.error(f"Error starting UI: {str(ex)}")
+            if debug.is_debug_enabled():
+                raise ex
+            return 1
+
     if cmd := installed_commands.get(args.command):
         try:
             cmd.execute(args)