"""Operator CLI for SBOM Nexus."""

from __future__ import annotations

import argparse
import json
import os
from pathlib import Path

from sbom_nexus.scanner import scan_repository


def _serve(args: argparse.Namespace) -> None:
    if args.database_url:
        os.environ["SBOM_NEXUS_DATABASE_URL"] = args.database_url
    elif args.database:
        os.environ["SBOM_NEXUS_DATABASE_PATH"] = str(Path(args.database).resolve())
    import uvicorn

    uvicorn.run(
        "sbom_nexus.api:create_app",
        host=args.host,
        port=args.port,
        reload=args.reload,
        factory=True,
    )


def _scan(args: argparse.Namespace) -> None:
    result = scan_repository(
        Path(args.path), slug=args.slug, source_revision=args.source_revision
    )
    rendered = json.dumps(result, indent=2, sort_keys=True)
    if args.output:
        output = Path(args.output)
        if output.exists() and not args.force:
            raise SystemExit(f"Refusing to overwrite {output}; pass --force")
        output.write_text(rendered + "\n", encoding="utf-8")
    else:
        print(rendered)
    if not result["ok"]:
        raise SystemExit(1)


def build_parser() -> argparse.ArgumentParser:
    parser = argparse.ArgumentParser(prog="sbom-nexus")
    subparsers = parser.add_subparsers(dest="command", required=True)

    serve = subparsers.add_parser("serve", help="Run the SBOM Nexus HTTP API")
    serve.add_argument("--host", default="127.0.0.1")
    serve.add_argument("--port", type=int, default=8010)
    serve.add_argument("--database", help="SQLite database path")
    serve.add_argument("--database-url", help="SQLAlchemy database URL (PostgreSQL in production)")
    serve.add_argument("--reload", action="store_true")
    serve.set_defaults(handler=_serve)

    scan = subparsers.add_parser("scan", help="Derive a snapshot from repository sources")
    scan.add_argument("path", nargs="?", default=".")
    scan.add_argument("--slug")
    scan.add_argument("--source-revision")
    scan.add_argument("--output")
    scan.add_argument("--force", action="store_true")
    scan.set_defaults(handler=_scan)
    return parser


def main() -> None:
    args = build_parser().parse_args()
    args.handler(args)


if __name__ == "__main__":
    main()