#!/usr/bin/env python3
"""Pornirea aplicatiei de cantarire si etichetare.

    python run.py                    # dezvoltare: http://127.0.0.1:5000
    python run.py --host 0.0.0.0     # accesibil in reteaua locala
    python run.py --production       # server WSGI (waitress), fara debug

Variabile de mediu utile:
    CANTARIRE_HOST, CANTARIRE_PORT, CANTARIRE_SERVER=waitress
    CANTARIRE_SECRET_KEY   cheia de sesiune (obligatorie in productie)
    CANTARIRE_INSTANCE     folderul de date (implicit ./instance)
"""
from __future__ import annotations

import argparse
import os
import sys

from cantarire import create_app
from cantarire.config import DEV_SECRET_KEY


def _print_banner(app, host: str, port: int, server: str, production: bool) -> None:
    from cantarire import maintenance

    status = maintenance.database_status()
    summary = maintenance.readiness_summary()
    shown = "127.0.0.1" if host in ("0.0.0.0", "::") else host
    print(f"\nCantarire & etichetare - server {server}", flush=True)
    print(f"  URL      http://{shown}:{port}/", flush=True)
    print(f"  Baza     {status['path']} ({status['size_human']}, schema v{status['schema_version']})", flush=True)
    print(f"  Date     {status['counts']['components']} componente / "
          f"{status['counts']['recipes']} produse finite / "
          f"{status['counts']['templates']} sabloane", flush=True)
    if summary["ready"]:
        print("  Pregatit: gata de cantarit.", flush=True)
    else:
        missing = ", ".join(item["label"] for item in summary["missing"])
        print(f"  De completat: {missing} (lista apare pe pagina principala)", flush=True)
    if production and app.config.get("SECRET_KEY") == DEV_SECRET_KEY:
        print("  ATENTIE: seteaza CANTARIRE_SECRET_KEY inainte de productie.", flush=True)
    print(flush=True)


def main() -> int:
    parser = argparse.ArgumentParser(description="Cantarire si etichetare")
    parser.add_argument("--host", default=os.environ.get("CANTARIRE_HOST", ""))
    parser.add_argument("--port", type=int, default=int(os.environ.get("CANTARIRE_PORT", "5000")))
    parser.add_argument("--server", choices=("flask", "waitress"),
                        default=os.environ.get("CANTARIRE_SERVER", "flask"))
    parser.add_argument("--production", action="store_true",
                        help="server WSGI (waitress), host 0.0.0.0, fara debug")
    parser.add_argument("--debug", action="store_true", default=bool(os.environ.get("CANTARIRE_DEBUG")))
    parser.add_argument("--quiet", action="store_true", help="nu afisa sumarul de pornire")
    args = parser.parse_args()

    production = args.production or args.server == "waitress"
    host = args.host or ("0.0.0.0" if production else "127.0.0.1")
    server = "waitress" if production else "flask"
    debug = args.debug and not production

    app = create_app()

    if not args.quiet:
        with app.app_context():
            _print_banner(app, host, args.port, server, production)

    if server == "waitress":
        try:
            from waitress import serve
        except ImportError:
            print("Lipseste waitress. Instaleaza: pip install -r requirements.txt", file=sys.stderr)
            return 1
        serve(app, host=host, port=args.port, threads=8, ident="cantarire")
        return 0

    app.run(host=host, port=args.port, debug=debug, threaded=True)
    return 0


if __name__ == "__main__":
    sys.exit(main())