"""
Tests for engine.controller module.
"""

from unittest.mock import MagicMock, patch

from engine import config
from engine.controller import StreamController, _get_display


class TestGetDisplay:
    """Tests for _get_display function."""

    @patch("engine.controller.WebSocketDisplay")
    @patch("engine.controller.TerminalDisplay")
    def test_get_display_terminal(self, mock_terminal, mock_ws):
        """returns TerminalDisplay for display=terminal."""
        mock_terminal.return_value = MagicMock()
        mock_ws.return_value = MagicMock()

        cfg = config.Config(display="terminal")
        display = _get_display(cfg)

        mock_terminal.assert_called()
        assert isinstance(display, MagicMock)

    @patch("engine.controller.WebSocketDisplay")
    @patch("engine.controller.TerminalDisplay")
    def test_get_display_websocket(self, mock_terminal, mock_ws):
        """returns WebSocketDisplay for display=websocket."""
        mock_ws_instance = MagicMock()
        mock_ws.return_value = mock_ws_instance
        mock_terminal.return_value = MagicMock()

        cfg = config.Config(display="websocket")
        _get_display(cfg)

        mock_ws.assert_called()
        mock_ws_instance.start_server.assert_called()
        mock_ws_instance.start_http_server.assert_called()

    @patch("engine.controller.SixelDisplay")
    def test_get_display_sixel(self, mock_sixel):
        """returns SixelDisplay for display=sixel."""
        mock_sixel.return_value = MagicMock()
        cfg = config.Config(display="sixel")
        _get_display(cfg)

        mock_sixel.assert_called()

    def test_get_display_unknown_returns_null(self):
        """returns NullDisplay for unknown display mode."""
        cfg = config.Config(display="unknown")
        display = _get_display(cfg)

        from engine.display import NullDisplay

        assert isinstance(display, NullDisplay)

    @patch("engine.controller.WebSocketDisplay")
    @patch("engine.controller.TerminalDisplay")
    @patch("engine.controller.MultiDisplay")
    def test_get_display_both(self, mock_multi, mock_terminal, mock_ws):
        """returns MultiDisplay for display=both."""
        mock_terminal_instance = MagicMock()
        mock_ws_instance = MagicMock()
        mock_terminal.return_value = mock_terminal_instance
        mock_ws.return_value = mock_ws_instance

        cfg = config.Config(display="both")
        _get_display(cfg)

        mock_multi.assert_called()
        call_args = mock_multi.call_args[0][0]
        assert mock_terminal_instance in call_args
        assert mock_ws_instance in call_args


class TestStreamController:
    """Tests for StreamController class."""

    def test_init_default_config(self):
        """StreamController initializes with default config."""
        controller = StreamController()
        assert controller.config is not None
        assert isinstance(controller.config, config.Config)

    def test_init_custom_config(self):
        """StreamController accepts custom config."""
        custom_config = config.Config(headline_limit=500)
        controller = StreamController(config=custom_config)
        assert controller.config.headline_limit == 500

    def test_init_sources_none_by_default(self):
        """Sources are None until initialized."""
        controller = StreamController()
        assert controller.mic is None
        assert controller.ntfy is None

    @patch("engine.controller.MicMonitor")
    @patch("engine.controller.NtfyPoller")
    def test_initialize_sources(self, mock_ntfy, mock_mic):
        """initialize_sources creates mic and ntfy instances."""
        mock_mic_instance = MagicMock()
        mock_mic_instance.available = True
        mock_mic_instance.start.return_value = True
        mock_mic.return_value = mock_mic_instance

        mock_ntfy_instance = MagicMock()
        mock_ntfy_instance.start.return_value = True
        mock_ntfy.return_value = mock_ntfy_instance

        controller = StreamController()
        mic_ok, ntfy_ok = controller.initialize_sources()

        assert mic_ok is True
        assert ntfy_ok is True
        assert controller.mic is not None
        assert controller.ntfy is not None

    @patch("engine.controller.MicMonitor")
    @patch("engine.controller.NtfyPoller")
    def test_initialize_sources_mic_unavailable(self, mock_ntfy, mock_mic):
        """initialize_sources handles unavailable mic."""
        mock_mic_instance = MagicMock()
        mock_mic_instance.available = False
        mock_mic.return_value = mock_mic_instance

        mock_ntfy_instance = MagicMock()
        mock_ntfy_instance.start.return_value = True
        mock_ntfy.return_value = mock_ntfy_instance

        controller = StreamController()
        mic_ok, ntfy_ok = controller.initialize_sources()

        assert mic_ok is False
        assert ntfy_ok is True

    @patch("engine.controller.MicMonitor")
    def test_initialize_sources_cc_subscribed(self, mock_mic):
        """initialize_sources subscribes C&C handler."""
        mock_mic_instance = MagicMock()
        mock_mic_instance.available = False
        mock_mic_instance.start.return_value = False
        mock_mic.return_value = mock_mic_instance

        with patch("engine.controller.NtfyPoller") as mock_ntfy:
            mock_ntfy_instance = MagicMock()
            mock_ntfy_instance.start.return_value = True
            mock_ntfy.return_value = mock_ntfy_instance

            controller = StreamController()
            controller.initialize_sources()

            mock_ntfy_instance.subscribe.assert_called()


class TestStreamControllerCleanup:
    """Tests for StreamController cleanup."""

    @patch("engine.controller.MicMonitor")
    def test_cleanup_stops_mic(self, mock_mic):
        """cleanup stops the microphone if running."""
        mock_mic_instance = MagicMock()
        mock_mic.return_value = mock_mic_instance

        controller = StreamController()
        controller.mic = mock_mic_instance
        controller.cleanup()

        mock_mic_instance.stop.assert_called_once()