"""GOGUpdater GUI entry point."""

import sys

from loguru import logger
from PySide6.QtWidgets import QApplication

from src.api import GogApi
from src.auth import AuthManager
from src.config import AppConfig, DEFAULT_CONFIG_DIR
from src.constants import APP_TITLE
from src.ui.main_window import MainWindow


def _setup_logging(config_dir) -> None:
    """Log DEBUG to stderr and to a rotating file for diagnostics."""
    log_file = config_dir / "gogupdater.log"
    logger.add(
        log_file,
        level="DEBUG",
        rotation="2 MB",
        retention=3,
        backtrace=True,
        diagnose=True,
        enqueue=True,  # thread-safe logging from worker threads
    )
    logger.info(f"Logging to {log_file}")

    # Make sure exceptions raised inside Qt slots are logged instead of swallowed.
    def _excepthook(exc_type, exc_value, exc_tb):
        logger.opt(exception=(exc_type, exc_value, exc_tb)).error("Uncaught exception")
        sys.__excepthook__(exc_type, exc_value, exc_tb)

    sys.excepthook = _excepthook


def main() -> None:
    config_dir = DEFAULT_CONFIG_DIR
    config_dir.mkdir(parents=True, exist_ok=True)

    _setup_logging(config_dir)
    logger.info(f"Starting {APP_TITLE}")

    auth = AuthManager(config_dir)
    api = GogApi(auth)
    config = AppConfig(config_dir)

    app = QApplication(sys.argv)
    window = MainWindow(auth, api, config)
    window.show()

    logger.info("Application window shown")
    sys.exit(app.exec())


if __name__ == "__main__":
    main()