"""Tests for _handle_streaming_event complexity refactoring following TDD methodology.

This module contains tests specifically designed to verify the behavior
of the complex _handle_streaming_event function before and after refactoring.
"""

import importlib.util

# Import directly from the specific file, not the package
from pathlib import Path
from unittest.mock import Mock, patch

import pytest

spec = importlib.util.spec_from_file_location(
    "visualization",
    str(
        Path(__file__).parent.parent.parent.parent
        / "src"
        / "llm_orc"
        / "cli_modules"
        / "utils"
        / "visualization.py"
    ),
)
if spec is not None and spec.loader is not None:
    viz_module = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(viz_module)
else:
    raise RuntimeError("Could not load visualization module")


class TestHandleStreamingEventComplexityRefactor:
    """Test suite for _handle_streaming_event complexity refactoring.

    These tests verify the exact behavior of the complex function
    before refactoring to ensure behavior is preserved.
    """

    @pytest.fixture
    def mock_ensemble_config(self) -> Mock:
        """Create a mock ensemble configuration."""
        config = Mock()
        config.agents = [
            {"name": "agent_1", "depends_on": []},
            {"name": "agent_2", "depends_on": ["agent_1"]},
        ]
        return config

    def test_handle_streaming_event_agent_progress(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test agent_progress event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "agent_progress",
            "data": {
                "started_agent_names": ["agent_1"],
                "completed_agent_names": [],
            },
        }

        with (
            patch.object(viz_module, "_update_agent_status_by_names") as mock_update,
            patch.object(viz_module, "create_dependency_tree") as mock_tree,
        ):
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "agent_progress",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        mock_update.assert_called_once()
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_execution_started(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test execution_started event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {"type": "execution_started", "data": {}}

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "execution_started",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_agent_started(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test agent_started event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "agent_started",
            "data": {"agent_name": "agent_1"},
        }

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "agent_started",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "running"
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_agent_completed(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test agent_completed event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "agent_completed",
            "data": {"agent_name": "agent_1"},
        }

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "agent_completed",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "completed"
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_execution_progress(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test execution_progress event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {"type": "execution_progress", "data": {}}

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "execution_progress",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_agent_fallback_started(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test agent_fallback_started event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "agent_fallback_started",
            "data": {"agent_name": "agent_1"},
        }

        with (
            patch.object(viz_module, "create_dependency_tree") as mock_tree,
            patch.object(viz_module, "_handle_fallback_started_event") as mock_fallback,
        ):
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "agent_fallback_started",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "running"
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")
        mock_fallback.assert_called_once_with(mock_console, event["data"])

    def test_handle_streaming_event_agent_fallback_completed(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test agent_fallback_completed event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "agent_fallback_completed",
            "data": {"agent_name": "agent_1"},
        }

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "agent_fallback_completed",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "completed"
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_agent_fallback_failed(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test agent_fallback_failed event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "agent_fallback_failed",
            "data": {"agent_name": "agent_1"},
        }

        with (
            patch.object(viz_module, "create_dependency_tree") as mock_tree,
            patch.object(viz_module, "_handle_fallback_failed_event") as mock_fallback,
        ):
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "agent_fallback_failed",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "failed"
        mock_tree.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")
        mock_fallback.assert_called_once_with(mock_console, event["data"])

    def test_handle_streaming_event_execution_completed(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test execution_completed event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "execution_completed",
            "data": {"execution_time": 5.0},
        }

        with patch.object(
            viz_module, "_process_execution_completed_event"
        ) as mock_process:
            mock_process.return_value = False  # Signal to break execution

            result = viz_module._handle_streaming_event(
                "execution_completed",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                True,
            )

        assert result is False  # Should return False for execution_completed
        mock_process.assert_called_once_with(
            mock_console,
            mock_status,
            mock_ensemble_config.agents,
            event["data"],
            "rich",
            True,
        )

    def test_handle_streaming_event_user_input_required(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test user_input_required event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "user_input_required",
            "data": {"agent_name": "agent_1"},
        }

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "user_input_required",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "waiting_input"
        mock_status.stop.assert_called_once()
        mock_console.clear.assert_called_once()
        mock_tree.assert_called_once()
        mock_console.print.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_user_input_completed(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test user_input_completed event type branch."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "user_input_completed",
            "data": {"agent_name": "agent_1"},
        }

        with patch.object(viz_module, "create_dependency_tree") as mock_tree:
            mock_tree.return_value = "mocked_tree"

            result = viz_module._handle_streaming_event(
                "user_input_completed",
                event,
                agent_statuses,
                mock_ensemble_config,
                mock_status,
                mock_console,
                "rich",
                False,
            )

        assert result is True
        assert agent_statuses["agent_1"] == "running"
        mock_tree.assert_called_once()
        mock_status.start.assert_called_once()
        mock_status.update.assert_called_once_with("mocked_tree")

    def test_handle_streaming_event_unknown_event_type(
        self, mock_ensemble_config: Mock
    ) -> None:
        """Test behavior with unknown event type (should return True by default)."""
        agent_statuses: dict[str, str] = {}
        mock_status = Mock()
        mock_console = Mock()

        event = {
            "type": "unknown_event",
            "data": {},
        }

        result = viz_module._handle_streaming_event(
            "unknown_event",
            event,
            agent_statuses,
            mock_ensemble_config,
            mock_status,
            mock_console,
            "rich",
            False,
        )

        assert result is True
        # Should not call any status updates for unknown event types
        mock_status.update.assert_not_called()


class TestHandleStreamingEventRefactoredFunctions:
    """Test suite for the helper functions extracted from _handle_streaming_event.

    These tests verify that the extracted helper functions work correctly
    and preserve the original behavior.
    """

    def test_handle_progress_events(self) -> None:
        """Test helper function to handle progress-related events."""
        # This test will verify the extracted helper function
        # Will be implemented after refactoring
        pass

    def test_handle_agent_lifecycle_events(self) -> None:
        """Test helper function to handle agent lifecycle events."""
        # This test will verify the extracted helper function
        # Will be implemented after refactoring
        pass

    def test_handle_fallback_events(self) -> None:
        """Test helper function to handle fallback events."""
        # This test will verify the extracted helper function
        # Will be implemented after refactoring
        pass

    def test_handle_execution_events(self) -> None:
        """Test helper function to handle execution events."""
        # This test will verify the extracted helper function
        # Will be implemented after refactoring
        pass

    def test_handle_user_input_events(self) -> None:
        """Test helper function to handle user input events."""
        # This test will verify the extracted helper function
        # Will be implemented after refactoring
        pass
