"""Tests unitarios para el módulo main."""

from unittest.mock import MagicMock, patch


class TestMain:
    """Tests para la función main."""

    # ========================================
    # Tests para main - Complejidad Baja
    # Path 1: Orquestación correcta de componentes
    # ========================================

    def test_main_creates_playlist_manager(self):
        """Test: main crea una instancia de PlaylistManager."""
        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager") as mock_manager_class:
                mock_manager = MagicMock()
                mock_manager_class.return_value = mock_manager

                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server"):
                        from m3u_list_builder.main import main

                        main()

                        mock_manager_class.assert_called_once()

    def test_main_starts_updater_thread(self):
        """Test: main inicia el hilo de actualización."""
        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager") as mock_manager_class:
                mock_manager = MagicMock()
                mock_manager_class.return_value = mock_manager

                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server"):
                        from m3u_list_builder.main import main

                        main()

                        mock_thread.assert_called_once()
                        mock_thread_instance.start.assert_called_once()

    def test_main_thread_is_daemon(self):
        """Test: main crea el hilo como daemon."""
        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager") as mock_manager_class:
                mock_manager = MagicMock()
                mock_manager_class.return_value = mock_manager

                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server"):
                        from m3u_list_builder.main import main

                        main()

                        # Verificar que daemon=True
                        call_kwargs = mock_thread.call_args[1]
                        assert call_kwargs["daemon"] is True

    def test_main_thread_targets_manager_loop(self):
        """Test: main configura el hilo con target=manager.loop."""
        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager") as mock_manager_class:
                mock_manager = MagicMock()
                mock_manager_class.return_value = mock_manager

                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server"):
                        from m3u_list_builder.main import main

                        main()

                        # Verificar que target es manager.loop
                        call_kwargs = mock_thread.call_args[1]
                        assert call_kwargs["target"] == mock_manager.loop

    def test_main_thread_has_correct_name(self):
        """Test: main nombra el hilo como UpdaterThread."""
        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager") as mock_manager_class:
                mock_manager = MagicMock()
                mock_manager_class.return_value = mock_manager

                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server"):
                        from m3u_list_builder.main import main

                        main()

                        call_kwargs = mock_thread.call_args[1]
                        assert call_kwargs["name"] == "UpdaterThread"

    def test_main_runs_server(self):
        """Test: main ejecuta run_server."""
        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager"):
                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server") as mock_run_server:
                        from m3u_list_builder.main import main

                        main()

                        mock_run_server.assert_called_once()

    def test_main_starts_thread_before_server(self):
        """Test: main inicia el hilo antes de ejecutar el servidor."""
        call_order = []

        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test.com"

            with patch("m3u_list_builder.main.PlaylistManager"):
                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread_instance.start.side_effect = lambda: call_order.append(
                        "thread_start"
                    )
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server") as mock_run_server:
                        mock_run_server.side_effect = lambda: call_order.append(
                            "run_server"
                        )

                        from m3u_list_builder.main import main

                        main()

                        assert call_order == ["thread_start", "run_server"]

    def test_main_logs_startup_info(self, caplog):
        """Test: main registra información de inicio."""
        import logging

        with patch("m3u_list_builder.main.settings") as mock_settings:
            mock_settings.host = "http://test-host.com"

            with patch("m3u_list_builder.main.PlaylistManager"):
                with patch("m3u_list_builder.main.threading.Thread") as mock_thread:
                    mock_thread_instance = MagicMock()
                    mock_thread.return_value = mock_thread_instance

                    with patch("m3u_list_builder.main.run_server"):
                        with caplog.at_level(logging.INFO):
                            from m3u_list_builder.main import main

                            main()

                            # Puede que el log se capture dependiendo del setup