#!/usr/bin/env python3
"""Transmutate — Media Conversion GUI.

Usage:
    python transmutate.py <path/to/image|video|audio>

Opens a CustomTkinter GUI for converting the specified file.
"""

import sys
import os
from transmutate_app.gui import open_file


def main():
    """CLI entry point: validate arguments and open the GUI."""
    if len(sys.argv) < 2:
        print("Usage: python transmutate.py <path/to/image|video|audio>")
        sys.exit(1)

    filepath = os.path.abspath(sys.argv[1])

    if not os.path.isfile(filepath):
        print(f"Error: File does not exist: {filepath}", file=sys.stderr)
        sys.exit(1)

    open_file(filepath)


if __name__ == "__main__":
    main()