import asyncio
from pathlib import Path
from watchfiles import awatch, Change
from .config import CONFIG
from .ingest import ingest_file
from .parsers import PARSERS


async def watch_corpus():
    print(f"Watching {CONFIG.corpus_root} for changes...", flush=True)
    async for changes in awatch(CONFIG.corpus_root):
        for change_type, path_str in changes:
            path = Path(path_str)
            if path.suffix.lower() not in PARSERS:
                continue
            if change_type in (Change.added, Change.modified):
                if path.is_file():
                    print(f"Change detected: {path}", flush=True)
                    try:
                        result = ingest_file(path)
                        print(f"  → {result['status']}", flush=True)
                    except Exception as e:
                        print(f"  → error: {e}", flush=True)


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