"""
Scheduled Task — Repository Scanner
====================================
Periodically scans all admin-accessible Gogs repositories,
detects repos with a ``manifest.yaml``, and auto-configures
the Data Nexus webhook so data pushes are captured automatically.

Usage
-----
Run directly::

    python -m app.tasks.scan_repos          # single run
    python -m app.tasks.scan_repos --loop   # loop with interval

Or import and call programmatically::

    from app.tasks.scan_repos import run_once
    await run_once()
"""

import asyncio
import argparse
import logging
import sys

from app.services.repo_scanner import RepoScanner

# ── Logging ──────────────────────────────────────────────────────────
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s  %(levelname)-8s  %(name)s  %(message)s",
    datefmt="%Y-%m-%d %H:%M:%S",
)
logger = logging.getLogger("scan_repos")

# ── Default scan interval (seconds) ─────────────────────────────────
DEFAULT_INTERVAL_SECONDS = 60 * 60  # 1 hour


# ── Core routines ───────────────────────────────────────────────────


async def run_once() -> None:
    """Execute a single scan‑and‑configure cycle."""
    scanner = RepoScanner()
    result = await scanner.scan_and_configure()

    logger.info("=" * 60)
    logger.info("  Scan Summary")
    logger.info("-" * 60)
    logger.info(f"  Total repos discovered : {result.total_repos}")
    logger.info(f"  Admin repos            : {result.admin_repos}")
    logger.info(f"  With manifest.yaml     : {result.manifest_repos}")
    logger.info(f"  Webhooks created       : {result.webhooks_created}")
    logger.info(f"  Webhooks skipped (dup) : {result.webhooks_skipped}")
    logger.info(f"  Errors                 : {result.errors}")
    logger.info("=" * 60)


async def run_loop(interval: int = DEFAULT_INTERVAL_SECONDS) -> None:
    """Run the scan repeatedly with a fixed delay between cycles."""
    logger.info(f"Starting scan loop (interval={interval}s)")

    while True:
        try:
            await run_once()
        except Exception as exc:
            logger.error(f"Scan cycle failed: {exc}", exc_info=True)

        logger.info(f"Next scan in {interval} seconds …")
        await asyncio.sleep(interval)


# ── CLI entry‑point ─────────────────────────────────────────────────


def main() -> None:
    parser = argparse.ArgumentParser(
        description="Scan Gogs repos and auto-configure Data Nexus webhooks.",
    )
    parser.add_argument(
        "--loop",
        action="store_true",
        help="Run continuously with a fixed interval (default: 1 hour).",
    )
    parser.add_argument(
        "--interval",
        type=int,
        default=DEFAULT_INTERVAL_SECONDS,
        help=f"Interval in seconds between scans (default: {DEFAULT_INTERVAL_SECONDS}).",
    )

    args = parser.parse_args()

    if args.loop:
        asyncio.run(run_loop(interval=args.interval))
    else:
        asyncio.run(run_once())


if __name__ == "__main__":
    main()