# agent_v0/lea_ui/launcher.py
"""
Point d'entree pour le panneau Lea.

Lancement autonome :
    python -m agent_v0.lea_ui.launcher

Ou integre dans agent_v0/agent_v1/main.py avec flag --ui lea.

Ce module :
  1. Cree l'application Qt
  2. Instancie LeaServerClient
  3. Instancie LeaMainWindow
  4. Enregistre un raccourci global (Ctrl+Shift+L) via keyboard hook
  5. Lance la boucle Qt
"""

from __future__ import annotations

import argparse
import logging
import os
import sys
from typing import Optional

logger = logging.getLogger("lea_ui.launcher")


def _setup_logging(verbose: bool = False) -> None:
    """Configurer le logging pour le panneau Lea."""
    level = logging.DEBUG if verbose else logging.INFO
    logging.basicConfig(
        level=level,
        format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
        datefmt="%H:%M:%S",
    )


def _setup_global_hotkey(window) -> Optional[object]:
    """Enregistrer le raccourci global Ctrl+Shift+L pour afficher/cacher le panneau.

    Utilise la librairie keyboard si disponible (Windows/Linux).
    Retourne le hook pour pouvoir le desinscrire a l'arret.
    """
    try:
        import keyboard

        def on_hotkey():
            # Appeler toggle_visibility dans le thread Qt
            from PyQt5.QtCore import QTimer
            QTimer.singleShot(0, window.toggle_visibility)

        keyboard.add_hotkey("ctrl+shift+l", on_hotkey)
        logger.info("Raccourci global Ctrl+Shift+L enregistre")
        return True
    except ImportError:
        logger.info(
            "Librairie 'keyboard' non disponible — "
            "raccourci global Ctrl+Shift+L non enregistre. "
            "Installez-la avec: pip install keyboard"
        )
        return None
    except Exception as e:
        logger.warning("Impossible d'enregistrer le raccourci global : %s", e)
        return None


def _load_environment() -> None:
    """Charger les variables d'environnement depuis .env.local."""
    env_paths = [
        os.path.join(os.path.dirname(__file__), "..", "..", ".env.local"),
        os.path.join(os.path.dirname(__file__), "..", ".env.local"),
    ]
    for env_path in env_paths:
        env_path = os.path.abspath(env_path)
        if os.path.exists(env_path):
            try:
                from dotenv import load_dotenv
                load_dotenv(env_path)
                logger.info("Variables d'environnement chargees depuis %s", env_path)
                return
            except ImportError:
                # Fallback : chargement manuel
                with open(env_path, "r", encoding="utf-8") as f:
                    for line in f:
                        line = line.strip()
                        if line and not line.startswith("#") and "=" in line:
                            key, value = line.split("=", 1)
                            value = value.strip("\"'")
                            os.environ[key.strip()] = value
                logger.info("Variables chargees manuellement depuis %s", env_path)
                return


def launch_lea(
    server_host: Optional[str] = None,
    chat_port: int = 5004,
    stream_port: int = 5005,
    verbose: bool = False,
    session_id: Optional[str] = None,
) -> None:
    """Lancer le panneau Lea.

    Args:
        server_host: adresse du serveur Linux (None = auto-detection)
        chat_port: port du serveur chat
        stream_port: port du serveur streaming
        verbose: mode debug
        session_id: identifiant de session pour le polling replay
    """
    _setup_logging(verbose)
    _load_environment()

    # Import PyQt5 ici pour un message d'erreur clair si absent
    try:
        from PyQt5.QtWidgets import QApplication
        from PyQt5.QtCore import Qt
    except ImportError:
        logger.error(
            "PyQt5 n'est pas installe. Installez-le avec :\n"
            "  pip install PyQt5"
        )
        sys.exit(1)

    from .server_client import LeaServerClient
    from .main_window import LeaMainWindow

    # Creer ou recuperer l'application Qt
    app = QApplication.instance()
    if app is None:
        app = QApplication(sys.argv)
    app.setQuitOnLastWindowClosed(False)

    # Client serveur
    client = LeaServerClient(
        server_host=server_host,
        chat_port=chat_port,
        stream_port=stream_port,
    )

    # Fenetre principale
    window = LeaMainWindow(server_client=client)
    window.show()

    # Raccourci global
    hotkey = _setup_global_hotkey(window)

    # Polling replay (si session_id fourni)
    if session_id:
        client.start_polling(session_id)

    logger.info(
        "Panneau Lea demarre — serveur=%s, chat_port=%d, stream_port=%d",
        client.server_host, chat_port, stream_port,
    )

    # Boucle Qt
    try:
        exit_code = app.exec_()
    finally:
        window.shutdown()
        if hotkey:
            try:
                import keyboard
                keyboard.unhook_all()
            except Exception:
                pass

    sys.exit(exit_code)


def main() -> None:
    """Point d'entree CLI."""
    parser = argparse.ArgumentParser(
        description="Panneau Lea — Interface utilisateur RPA Vision V3",
    )
    parser.add_argument(
        "--server", "-s",
        dest="server_host",
        default=None,
        help="Adresse du serveur Linux (defaut: RPA_SERVER_HOST ou localhost)",
    )
    parser.add_argument(
        "--chat-port",
        type=int,
        default=5004,
        help="Port du serveur chat (defaut: 5004)",
    )
    parser.add_argument(
        "--stream-port",
        type=int,
        default=5005,
        help="Port du serveur streaming (defaut: 5005)",
    )
    parser.add_argument(
        "--session-id",
        default=None,
        help="Identifiant de session pour le polling replay",
    )
    parser.add_argument(
        "--verbose", "-v",
        action="store_true",
        help="Mode debug (logs verbeux)",
    )

    args = parser.parse_args()

    launch_lea(
        server_host=args.server_host,
        chat_port=args.chat_port,
        stream_port=args.stream_port,
        verbose=args.verbose,
        session_id=args.session_id,
    )


if __name__ == "__main__":
    main()