#!/usr/bin/env python3

import subprocess
from argparse import ArgumentParser
from pathlib import Path

if __name__ == "__main__":
    parser = ArgumentParser(description="Alacritty theme switcher")
    parser.add_argument(
        "mode",
        help="The mode to switch the Alacritty theme to (e.g., 'dark' or 'light')",
    )
    args = parser.parse_args()

    if args.mode not in ["dark", "light"]:
        print("Invalid mode. Please choose 'dark' or 'light'.")
        exit(1)

    """
    The Alacritty config directory should contain the following files:
    └── themes
        ├── current.toml -> dark/default.toml
        ├── dark
        │   └── default.toml
        └── light
            └── default.toml

    The default.toml files can be symlinks to the actual theme files, so you can easily switch between
    different themes by changing the symlink target.

    To change the light/dark theme, we can simply change the current.toml symlink to point to the
    appropriate theme file.
    """

    alacritty_config = Path.home() / ".config/alacritty"
    themes_dir = alacritty_config / "themes"
    current_theme = themes_dir / "current.toml"
    target_theme = themes_dir / args.mode / "default.toml"

    if not target_theme.exists():
        print(f"Target theme file not found at {target_theme}")
        exit(1)

    if current_theme.exists() and not current_theme.is_symlink():
        print(f"Current theme file {current_theme} is not a symlink. Please fix this manually.")
        exit(1)

    if current_theme.exists():
        current_theme.unlink()

    current_theme.symlink_to(target_theme)

    print("Done!")