#!/usr/bin/env python3
"""Re-ingest tenant documents into Qdrant after switching from FAISS.

Usage (from repo root, with Qdrant running and VECTORSTORE_BACKEND=qdrant):

    python scripts/reingest_qdrant.py --tenant-id YOUR_TENANT

Optional: mark all completed documents for a tenant and schedule ingest jobs via the API
or call ingest pipeline directly for each file path in the database.
"""

from __future__ import annotations

import argparse
import asyncio
import logging
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("reingest_qdrant")


async def _reingest_tenant(tenant_id: str, *, limit: int | None) -> int:
    from sqlalchemy import select

    from app.config import settings
    from app.db.database import get_session_factory, init_db
    from app.db.models import Document, IngestStatus
    from app.ingest.schedule import schedule_ingest
    from app.vectorstore.factory import reset_vectorstore

    backend = (settings.vectorstore_backend or "faiss").strip().lower()
    if backend != "qdrant":
        raise SystemExit(
            f"VECTORSTORE_BACKEND={backend!r}; set VECTORSTORE_BACKEND=qdrant in .env"
        )

    await init_db()
    reset_vectorstore()
    factory = get_session_factory()
    n = 0
    async with factory() as db:
        q = select(Document).where(Document.tenant_id == tenant_id)
        if limit is not None:
            q = q.limit(limit)
        result = await db.execute(q)
        docs = list(result.scalars().all())
        for doc in docs:
            if doc.status != IngestStatus.complete:
                logger.warning("Skipping non-complete doc %s status=%s", doc.id, doc.status)
                continue
            path = Path(doc.file_path)
            if not path.is_file():
                logger.warning("Missing file for doc %s: %s", doc.id, doc.file_path)
                continue
            schedule_ingest(doc_id=doc.id, file_path=path)
            n += 1
    logger.info("Queued %d document(s) for re-ingest tenant=%s", n, tenant_id)
    return n


def main() -> None:
    parser = argparse.ArgumentParser(description="Re-queue ingest jobs into Qdrant")
    parser.add_argument("--tenant-id", required=True, help="Tenant id to re-ingest")
    parser.add_argument("--limit", type=int, default=None, help="Max documents to queue")
    args = parser.parse_args()
    asyncio.run(_reingest_tenant(args.tenant_id, limit=args.limit))


if __name__ == "__main__":
    main()