#!/usr/bin/env python3
"""HMS MediaEngine – Einstiegspunkt.

Startet Engine (GStreamer), Art-Net-Empfang, Web-Server (UI/API/Upload).
Alle Einstellungen (inkl. Art-Net-Mapping) sind in der Web-UI konfigurierbar
und werden in config.json gespeichert.

Usage:
  python3 run.py                     # Standardstart (UI im Browser)
  python3 run.py video1.mp4           # Dateien importieren + als Layer
  python3 run.py --setup              # Nativer Dialog (Port/Fullscreen)
  python3 run.py --bootstrap          # GStreamer pruefen/installieren
  python3 run.py --generate-setup     # Setup-Skripte erzeugen
"""

from __future__ import annotations

import argparse
import signal
import sys
import time
from pathlib import Path

ROOT = Path(__file__).resolve().parent
sys.path.insert(0, str(ROOT))

import gi  # noqa: E402
gi.require_version("Gst", "1.0")
from gi.repository import Gst  # noqa: E402

Gst.init(None)

from hms_app import config as cfgmod  # noqa: E402
from hms_app.artnet import ArtNetInput  # noqa: E402
from hms_app.engine import MediaEngine  # noqa: E402
from hms_app.media import MediaLibrary  # noqa: E402
from hms_app.server import EngineServer  # noqa: E402


def main() -> int:
    ap = argparse.ArgumentParser(description="HMS MediaEngine")
    ap.add_argument("files", nargs="*", help="Medien-Dateien importieren")
    ap.add_argument("--setup", action="store_true",
                    help="Nativer Einstellungsdialog (tkinter)")
    ap.add_argument("--bootstrap", action="store_true",
                    help="GStreamer pruefen/nachinstallieren")
    ap.add_argument("--generate-setup", action="store_true",
                    help="setup_windows.ps1 / setup_linux.sh erzeugen")
    ap.add_argument("--port", type=int, default=None,
                    help="Web-Port ueberschreibt config.json")
    args = ap.parse_args()

    if args.generate_setup:
        from hms_app import setup as setupmod
        setupmod.generate_setup_scripts(ROOT)
        return 0

    if args.bootstrap:
        from hms_app import setup as setupmod
        ok = setupmod.check_and_install_dependencies()
        return 0 if ok else 1

    settings = cfgmod.load(ROOT)
    if args.port is not None:
        settings["web"]["port"] = args.port

    if args.setup:
        from hms_app import setup as setupmod
        cfg = setupmod.run_setup(settings)
        settings["web"]["port"] = cfg["port"]
        settings["output"]["fullscreen"] = cfg["fullscreen"]
        cfgmod.save(ROOT, settings)

    library = MediaLibrary(settings, ROOT)
    library.ensure_dirs()
    engine = MediaEngine(settings, library)
    artnet = ArtNetInput(engine, settings)
    server = EngineServer(engine, artnet, library, settings, ROOT)

    # CLI-Dateien importieren und als Layer aktivieren
    for f in args.files:
        p = Path(f).expanduser()
        name = library.import_copy(p) if p.exists() else None
        if name:
            engine.add_layer(name)
            print(f"[Start] Importiert + Layer: {name}")
        else:
            print(f"[Start] Import fehlgeschlagen: {f}")

    engine.rebuild()
    artnet.start()
    if not server.start():
        return 1

    running = True

    def stop_handler(_sig, _frame):
        nonlocal running
        running = False

    signal.signal(signal.SIGINT, stop_handler)
    signal.signal(signal.SIGTERM, stop_handler)

    print()
    print("=" * 62)
    print("  HMS MediaEngine laeuft")
    print(f"  UI         : http://localhost:{settings['web']['port']}/")
    print(f"  Art-Net    : UDP {settings['artnet']['listen_port']} "
          f"(Universes {settings['artnet']['universes']})")
    print("  Einstellungen (Art-Net, Preview, Layer, Upload): Web-UI")
    print("  Beenden    : Strg+C")
    print("=" * 62)

    try:
        while running:
            time.sleep(1)
    except KeyboardInterrupt:
        pass
    finally:
        print("\nBeende...")
        server.stop()
        artnet.stop()
        engine.stop()
        print("Beendet.")
    return 0


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