"""Tests for the initialization service."""

from pathlib import Path
from unittest.mock import patch, MagicMock, AsyncMock

import pytest

from basic_memory.services.initialization import (
    ensure_initialization,
    initialize_app,
    initialize_database,
    reconcile_projects_with_config,
    migrate_legacy_projects,
    migrate_legacy_project_data,
    initialize_file_sync,
)


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.db.get_or_create_db")
async def test_initialize_database(mock_get_or_create_db, app_config):
    """Test initializing the database."""
    mock_get_or_create_db.return_value = (MagicMock(), MagicMock())
    await initialize_database(app_config)
    mock_get_or_create_db.assert_called_once_with(app_config.database_path)


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.db.get_or_create_db")
async def test_initialize_database_error(mock_get_or_create_db, app_config):
    """Test handling errors during database initialization."""
    mock_get_or_create_db.side_effect = Exception("Test error")
    await initialize_database(app_config)
    mock_get_or_create_db.assert_called_once_with(app_config.database_path)


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.reconcile_projects_with_config")
@patch("basic_memory.services.migration_service.migration_manager")
@patch("basic_memory.services.initialization.initialize_database")
async def test_initialize_app(
    mock_initialize_database,
    mock_migration_manager,
    mock_reconcile_projects,
    app_config,
):
    """Test app initialization."""
    mock_migration_manager.start_background_migration = AsyncMock()

    result = await initialize_app(app_config)

    mock_initialize_database.assert_called_once_with(app_config)
    mock_reconcile_projects.assert_called_once_with(app_config)
    mock_migration_manager.start_background_migration.assert_called_once_with(app_config)
    assert result == mock_migration_manager


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.initialize_database")
@patch("basic_memory.services.initialization.reconcile_projects_with_config")
@patch("basic_memory.services.migration_service.migration_manager")
async def test_initialize_app_sync_disabled(
    mock_migration_manager, mock_reconcile_projects, mock_initialize_database, app_config
):
    """Test app initialization with sync disabled."""
    app_config.sync_changes = False
    mock_migration_manager.start_background_migration = AsyncMock()

    result = await initialize_app(app_config)

    mock_initialize_database.assert_called_once_with(app_config)
    mock_reconcile_projects.assert_called_once_with(app_config)
    mock_migration_manager.start_background_migration.assert_called_once_with(app_config)
    assert result == mock_migration_manager


@patch("basic_memory.services.initialization.asyncio.run")
def test_ensure_initialization(mock_run, project_config):
    """Test synchronous initialization wrapper."""
    ensure_initialization(project_config)
    mock_run.assert_called_once()


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.db.get_or_create_db")
async def test_reconcile_projects_with_config(mock_get_db, app_config):
    """Test reconciling projects from config with database using ProjectService."""
    # Setup mocks
    mock_session_maker = AsyncMock()
    mock_get_db.return_value = (None, mock_session_maker)

    mock_repository = AsyncMock()
    mock_project_service = AsyncMock()
    mock_project_service.synchronize_projects = AsyncMock()

    # Mock the repository and project service
    with (
        patch("basic_memory.services.initialization.ProjectRepository") as mock_repo_class,
        patch(
            "basic_memory.services.project_service.ProjectService",
            return_value=mock_project_service,
        ),
    ):
        mock_repo_class.return_value = mock_repository

        # Set up app_config projects as a dictionary
        app_config.projects = {"test_project": "/path/to/project", "new_project": "/path/to/new"}
        app_config.default_project = "test_project"

        # Run the function
        await reconcile_projects_with_config(app_config)

        # Assertions
        mock_get_db.assert_called_once()
        mock_repo_class.assert_called_once_with(mock_session_maker)
        mock_project_service.synchronize_projects.assert_called_once()

        # We should no longer be calling these directly since we're using the service
        mock_repository.find_all.assert_not_called()
        mock_repository.set_as_default.assert_not_called()


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.db.get_or_create_db")
async def test_reconcile_projects_with_error_handling(mock_get_db, app_config):
    """Test error handling during project synchronization."""
    # Setup mocks
    mock_session_maker = AsyncMock()
    mock_get_db.return_value = (None, mock_session_maker)

    mock_repository = AsyncMock()
    mock_project_service = AsyncMock()
    mock_project_service.synchronize_projects = AsyncMock(
        side_effect=ValueError("Project synchronization error")
    )

    # Mock the repository and project service
    with (
        patch("basic_memory.services.initialization.ProjectRepository") as mock_repo_class,
        patch(
            "basic_memory.services.project_service.ProjectService",
            return_value=mock_project_service,
        ),
        patch("basic_memory.services.initialization.logger") as mock_logger,
    ):
        mock_repo_class.return_value = mock_repository

        # Set up app_config projects as a dictionary
        app_config.projects = {"test_project": "/path/to/project"}
        app_config.default_project = "missing_project"

        # Run the function which now has error handling
        await reconcile_projects_with_config(app_config)

        # Assertions
        mock_get_db.assert_called_once()
        mock_repo_class.assert_called_once_with(mock_session_maker)
        mock_project_service.synchronize_projects.assert_called_once()

        # Verify error was logged
        mock_logger.error.assert_called_once_with(
            "Error during project synchronization: Project synchronization error"
        )
        mock_logger.info.assert_any_call(
            "Continuing with initialization despite synchronization error"
        )


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.db.get_or_create_db")
async def test_migrate_legacy_projects_no_legacy_dirs(mock_get_db, app_config):
    """Test migration when no legacy dirs exist."""
    # Setup mocks
    mock_session_maker = AsyncMock()
    mock_get_db.return_value = (None, mock_session_maker)

    mock_repository = AsyncMock()

    with (
        patch("basic_memory.services.initialization.Path") as mock_path,
        patch("basic_memory.services.initialization.ProjectRepository") as mock_repo_class,
        patch("basic_memory.services.initialization.migrate_legacy_project_data") as mock_migrate,
    ):
        # Create a mock for the Path instance
        mock_legacy_dir = MagicMock()
        mock_legacy_dir.exists.return_value = False
        mock_path.return_value.__truediv__.return_value = mock_legacy_dir

        mock_repo_class.return_value = mock_repository

        # Set up app_config projects as a dictionary
        app_config.projects = {"test_project": "/path/to/project"}

        # Run the function
        await migrate_legacy_projects(app_config)

        # Assertions - should not call get_by_name or migrate_legacy_project_data
        mock_repository.get_by_name.assert_not_called()
        mock_migrate.assert_not_called()


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.migrate_legacy_project_data")
@patch("basic_memory.services.initialization.db.get_or_create_db")
async def test_migrate_legacy_projects_with_legacy_dirs(
    mock_get_db, mock_migrate_legacy, app_config, tmp_path
):
    """Test migration with legacy dirs."""
    # Setup mocks
    mock_session_maker = AsyncMock()
    mock_get_db.return_value = (None, mock_session_maker)

    mock_repository = AsyncMock()
    mock_project = MagicMock()
    mock_project.name = "test_project"
    mock_project.id = 1  # Add numeric ID

    # Create a temporary legacy dir
    legacy_dir = tmp_path / ".basic-memory"
    legacy_dir.mkdir(exist_ok=True)

    # Mock the repository
    with patch("basic_memory.services.initialization.ProjectRepository") as mock_repo_class:
        mock_repo_class.return_value = mock_repository
        mock_repository.get_by_name.return_value = mock_project

        # Set up app_config projects as a dictionary
        app_config.projects = {"test_project": str(tmp_path)}

        # Run the function
        with patch("basic_memory.services.initialization.Path", lambda x: Path(x)):
            await migrate_legacy_projects(app_config)

        # Assertions
        mock_repository.get_by_name.assert_called_once_with("test_project")
        mock_migrate_legacy.assert_called_once_with(mock_project, legacy_dir)


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.shutil.rmtree")
async def test_migrate_legacy_project_data_success(mock_rmtree, tmp_path):
    """Test successful migration of legacy project data."""
    # Setup mocks
    mock_project = MagicMock()
    mock_project.name = "test_project"
    mock_project.path = str(tmp_path)
    mock_project.id = 1  # Add numeric ID

    mock_sync_service = AsyncMock()
    mock_sync_service.sync = AsyncMock()

    # Create a legacy dir
    legacy_dir = tmp_path / ".basic-memory"

    # Run the function
    with patch(
        "basic_memory.cli.commands.sync.get_sync_service", AsyncMock(return_value=mock_sync_service)
    ):
        result = await migrate_legacy_project_data(mock_project, legacy_dir)

    # Assertions
    mock_sync_service.sync.assert_called_once_with(
        Path(mock_project.path), project_name=mock_project.name
    )
    mock_rmtree.assert_called_once_with(legacy_dir)
    assert result is True


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.shutil.rmtree")
async def test_migrate_legacy_project_data_rmtree_error(mock_rmtree, tmp_path):
    """Test migration of legacy project data with rmtree error."""
    # Setup mocks
    mock_project = MagicMock()
    mock_project.name = "test_project"
    mock_project.path = str(tmp_path)
    mock_project.id = 1  # Add numeric ID

    mock_sync_service = AsyncMock()
    mock_sync_service.sync = AsyncMock()

    # Make rmtree raise an exception
    mock_rmtree.side_effect = Exception("Test error")

    # Create a legacy dir
    legacy_dir = tmp_path / ".basic-memory"

    # Run the function
    with patch(
        "basic_memory.cli.commands.sync.get_sync_service", AsyncMock(return_value=mock_sync_service)
    ):
        result = await migrate_legacy_project_data(mock_project, legacy_dir)

    # Assertions
    mock_sync_service.sync.assert_called_once_with(
        Path(mock_project.path), project_name=mock_project.name
    )
    mock_rmtree.assert_called_once_with(legacy_dir)
    assert result is False


@pytest.mark.asyncio
@patch("basic_memory.services.initialization.db.get_or_create_db")
@patch("basic_memory.cli.commands.sync.get_sync_service")
@patch("basic_memory.sync.WatchService")
async def test_initialize_file_sync_sequential(
    mock_watch_service_class, mock_get_sync_service, mock_get_db, app_config
):
    """Test file sync initialization with sequential project processing."""
    # Setup mocks
    mock_session_maker = AsyncMock()
    mock_get_db.return_value = (None, mock_session_maker)

    mock_watch_service = AsyncMock()
    mock_watch_service.run = AsyncMock()
    mock_watch_service_class.return_value = mock_watch_service

    mock_repository = AsyncMock()
    mock_project1 = MagicMock()
    mock_project1.name = "project1"
    mock_project1.path = "/path/to/project1"
    mock_project1.id = 1

    mock_project2 = MagicMock()
    mock_project2.name = "project2"
    mock_project2.path = "/path/to/project2"
    mock_project2.id = 2

    mock_sync_service = AsyncMock()
    mock_sync_service.sync = AsyncMock()
    mock_get_sync_service.return_value = mock_sync_service

    # Mock the repository
    with patch("basic_memory.services.initialization.ProjectRepository") as mock_repo_class:
        mock_repo_class.return_value = mock_repository
        mock_repository.get_active_projects.return_value = [mock_project1, mock_project2]

        # Run the function
        result = await initialize_file_sync(app_config)

        # Assertions
        mock_repository.get_active_projects.assert_called_once()

        # Should call sync for each project sequentially
        assert mock_get_sync_service.call_count == 2
        mock_get_sync_service.assert_any_call(mock_project1)
        mock_get_sync_service.assert_any_call(mock_project2)

        # Should call sync on each project
        assert mock_sync_service.sync.call_count == 2
        mock_sync_service.sync.assert_any_call(
            Path(mock_project1.path), project_name=mock_project1.name
        )
        mock_sync_service.sync.assert_any_call(
            Path(mock_project2.path), project_name=mock_project2.name
        )

        # Should start the watch service
        mock_watch_service.run.assert_called_once()

        # Should return None
        assert result is None