#!/usr/bin/env python3
"""Example usage of FileWatcherDaemon."""

import asyncio
import tempfile
from pathlib import Path

from lilith_file_watcher_daemon import FileChange, FileWatcherDaemon


async def on_changes(changes: list[FileChange]):
    """Callback for file changes."""
    print(f"\n📁 Detected {len(changes)} change(s):")
    for change in changes:
        print(f"  {change.change_type.value:8s} {change.path}")


async def main():
    # Create a temporary directory to watch
    with tempfile.TemporaryDirectory() as tmpdir:
        watch_path = Path(tmpdir)
        print(f"Watching directory: {watch_path}")

        # Create daemon
        daemon = FileWatcherDaemon(
            watch_paths=[watch_path],
            patterns=["**/*.txt"],
            callback=on_changes,
            debounce_ms=500,
        )

        # Start daemon in background
        daemon_task = asyncio.create_task(daemon.start())

        # Wait for daemon to start
        await asyncio.sleep(0.5)
        print("✓ Daemon started")

        # Create some test files
        print("\n🔨 Creating test files...")
        (watch_path / "file1.txt").write_text("Content 1")
        await asyncio.sleep(0.1)
        (watch_path / "file2.txt").write_text("Content 2")

        # Wait for changes to be detected and debounced
        await asyncio.sleep(1)

        # Modify a file
        print("\n🔨 Modifying file...")
        (watch_path / "file1.txt").write_text("Updated content")

        # Wait for changes
        await asyncio.sleep(1)

        # Delete a file
        print("\n🔨 Deleting file...")
        (watch_path / "file2.txt").unlink()

        # Wait for changes
        await asyncio.sleep(1)

        # Stop daemon
        print("\n🛑 Stopping daemon...")
        await daemon.stop()
        daemon_task.cancel()
        try:
            await daemon_task
        except asyncio.CancelledError:
            pass

        print("✓ Daemon stopped")
        print(f"Total cycles: {daemon.total_cycles}")
        print(f"Uptime: {daemon.uptime_seconds:.2f}s")


if __name__ == "__main__":
    asyncio.run(main())