"""Incremental Indexer File Event Processing Tests.

This module tests the file event processing in the incremental indexer,
covering all file system event types (CREATED, MODIFIED, DELETED, MOVED).

Test Coverage:
- CREATED events: New files being indexed
- MODIFIED events: Changed files being re-indexed
- DELETED events: Removed files being handled
- MOVED events: File renames being tracked
- Batch processing of multiple events
"""

import pytest
from pathlib import Path
from unittest.mock import Mock, patch, MagicMock
import tempfile
import shutil


class TestCreatedEvents:
    """Test handling of CREATED file events."""

    def test_new_file_indexed(self):
        """Test that newly created files are properly indexed."""
        pytest.skip("Requires incremental indexer fixture")

    def test_created_in_subdirectory(self):
        """Test that files created in subdirectories are indexed."""
        pytest.skip("Requires incremental indexer fixture")

    def test_batch_created_events(self):
        """Test handling multiple files created simultaneously."""
        pytest.skip("Requires incremental indexer fixture")


class TestModifiedEvents:
    """Test handling of MODIFIED file events."""

    def test_file_content_updated(self):
        """Test that file content changes trigger re-indexing."""
        pytest.skip("Requires incremental indexer fixture")

    def test_metadata_only_change(self):
        """Test handling of metadata-only changes (permissions, etc)."""
        pytest.skip("Requires incremental indexer fixture")

    def test_rapid_modifications(self):
        """Test handling of rapid successive modifications to same file."""
        pytest.skip("Requires incremental indexer fixture")


class TestDeletedEvents:
    """Test handling of DELETED file events."""

    def test_file_removed_from_index(self):
        """Test that deleted files are removed from the index."""
        pytest.skip("Requires incremental indexer fixture")

    def test_directory_deleted(self):
        """Test handling of directory deletion events."""
        pytest.skip("Requires incremental indexer fixture")

    def test_delete_non_indexed_file(self):
        """Test handling deletion of files that were never indexed."""
        pytest.skip("Requires incremental indexer fixture")


class TestMovedEvents:
    """Test handling of MOVED/RENAMED file events."""

    def test_file_renamed(self):
        """Test that renamed files are tracked in the index."""
        pytest.skip("Requires incremental indexer fixture")

    def test_file_moved_to_subdirectory(self):
        """Test that files moved to subdirectories are tracked."""
        pytest.skip("Requires incremental indexer fixture")

    def test_file_moved_out_of_watch_root(self):
        """Test handling of files moved outside the watch directory."""
        pytest.skip("Requires incremental indexer fixture")

    def test_directory_renamed(self):
        """Test handling of directory rename events."""
        pytest.skip("Requires incremental indexer fixture")


class TestEventBatching:
    """Test batching and deduplication of file events."""

    def test_duplicate_events_deduplicated(self):
        """Test that duplicate events for the same file are deduplicated."""
        pytest.skip("Requires incremental indexer fixture")

    def test_event_ordering_preserved(self):
        """Test that events are processed in the correct order."""
        pytest.skip("Requires incremental indexer fixture")

    def test_mixed_event_types_batch(self):
        """Test handling a batch with mixed event types."""
        pytest.skip("Requires incremental indexer fixture")


class TestErrorHandling:
    """Test error handling in file event processing."""

    def test_unreadable_file_skipped(self):
        """Test that unreadable files are handled gracefully."""
        pytest.skip("Requires incremental indexer fixture")

    def test_corrupted_event_continues(self):
        """Test that processing continues after a corrupted event."""
        pytest.skip("Requires incremental indexer fixture")

    def test_indexer_error_recovery(self):
        """Test recovery from indexer errors during event processing."""
        pytest.skip("Requires incremental indexer fixture")


# TODO: Implement actual tests using pytest fixtures and the incremental indexer
# The test infrastructure needs:
# - IncrementalIndexer fixture with mock filesystem watcher
# - Temporary directory fixtures for test files
# - Mock event queue for controlled event injection