"""Tests unitarios para el módulo server."""

from unittest.mock import MagicMock, patch


class TestRunServer:
    """Tests para la función run_server."""

    # ========================================
    # Tests para run_server - Complejidad Media
    # Path 1: Servidor inicia y sirve normalmente
    # Path 2: KeyboardInterrupt detiene el servidor
    # Path 3: Servidor se cierra correctamente en finally
    # ========================================

    def test_run_server_creates_server_with_correct_address(self):
        """Test: run_server crea servidor en la dirección correcta."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 9999
            mock_settings.output_file = "test.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                mock_server.serve_forever.side_effect = KeyboardInterrupt()
                mock_server_class.return_value = mock_server

                from m3u_list_builder.server import run_server

                run_server()

                # Verificar que se creó con la dirección correcta
                mock_server_class.assert_called_once()
                call_args = mock_server_class.call_args[0]
                assert call_args[0] == ("", 9999)

    def test_run_server_uses_correct_port(self):
        """Test: run_server usa el puerto de settings."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                mock_server.serve_forever.side_effect = KeyboardInterrupt()
                mock_server_class.return_value = mock_server

                from m3u_list_builder.server import run_server

                run_server()

                call_args = mock_server_class.call_args[0]
                assert call_args[0][1] == 8080

    def test_run_server_calls_serve_forever(self):
        """Test: run_server llama a serve_forever."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                mock_server.serve_forever.side_effect = KeyboardInterrupt()
                mock_server_class.return_value = mock_server

                from m3u_list_builder.server import run_server

                run_server()

                mock_server.serve_forever.assert_called_once()

    def test_run_server_handles_keyboard_interrupt(self):
        """Test: run_server maneja KeyboardInterrupt sin crash."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                mock_server.serve_forever.side_effect = KeyboardInterrupt()
                mock_server_class.return_value = mock_server

                from m3u_list_builder.server import run_server

                # No debe lanzar excepción
                run_server()

    def test_run_server_closes_server_on_interrupt(self):
        """Test: run_server cierra el servidor tras KeyboardInterrupt."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                mock_server.serve_forever.side_effect = KeyboardInterrupt()
                mock_server_class.return_value = mock_server

                from m3u_list_builder.server import run_server

                run_server()

                mock_server.server_close.assert_called_once()

    def test_run_server_closes_server_on_normal_exit(self):
        """Test: run_server cierra el servidor en salida normal."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                # Simular que serve_forever termina normalmente
                mock_server.serve_forever.return_value = None
                mock_server_class.return_value = mock_server

                from m3u_list_builder.server import run_server

                run_server()

                mock_server.server_close.assert_called_once()

    def test_run_server_logs_startup_message(self, caplog):
        """Test: run_server registra mensaje de inicio."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                mock_server = MagicMock()
                mock_server.serve_forever.side_effect = KeyboardInterrupt()
                mock_server_class.return_value = mock_server

                import logging

                with caplog.at_level(logging.INFO):
                    from m3u_list_builder.server import run_server

                    run_server()

                    # El mensaje puede estar en el log
                    # Nota: Dependiendo del orden de imports, puede que no se capture

    def test_run_server_uses_simple_http_handler(self):
        """Test: run_server usa SimpleHTTPRequestHandler."""
        with patch("m3u_list_builder.server.settings") as mock_settings:
            mock_settings.port = 8080
            mock_settings.output_file = "playlist.m3u"

            with patch(
                "m3u_list_builder.server.ThreadingHTTPServer"
            ) as mock_server_class:
                with patch(
                    "m3u_list_builder.server.SimpleHTTPRequestHandler"
                ) as mock_handler:
                    mock_server = MagicMock()
                    mock_server.serve_forever.side_effect = KeyboardInterrupt()
                    mock_server_class.return_value = mock_server

                    from m3u_list_builder.server import run_server

                    run_server()

                    # Verificar que se pasó el handler correcto
                    call_args = mock_server_class.call_args[0]
                    assert call_args[1] == mock_handler