#!/usr/bin/env python3

import sys
from pathlib import Path

home = Path.home().resolve().absolute()
dotdir = Path(__file__).parent.resolve().absolute()

simple = [
    # 'gemrc',
    "gitconfig",
    "ideavimrc",
    "lein",
    # 'irbrc',
    # 'nethackrc',
    # 'spacemacs',
    "tmux.conf",
    "vimrc",
]

targeted = {
    "doom": ".doom.d",
    "fish": ".config/fish",
    "kitty": ".config/kitty",
    "alacritty": ".config/alacritty",
    "i3": ".config/i3",
    "compton.conf": ".config/compton.conf",
    "xonsh/rc.xsh": ".xonshrc",
    "powerline": ".config/powerline"
}


def deploy(source_name, target_name, dry_run=False):
    source = dotdir.joinpath(source_name)
    target = home.joinpath(target_name)

    if not source.exists():
        raise FileNotFoundError(
            f"Asked to link {source_name}, which doesn't exist in {dotdir}."
        )

    if target.exists():
        if target.samefile(source):
            print(f"{target}->{source} already linked.")
            return

        backup_path = target.parent.joinpath(f"{target.name}.bak")

        print(f"{target} moves to {backup_path}")
        if not dry_run:
            target.replace(backup_path)

    if not target.parent.exists():
        print(f"making parent directories of {target}")
        if not dry_run:
            target.parent.mkdir(parents=True)

    print(f"linking {target} to {source}")
    if not dry_run:
        target.symlink_to(source)


def main(dry_run=True):
    for source in simple:
        target = f".{source}"
        deploy(source, target, dry_run=dry_run)

    for source, target in targeted.items():
        deploy(source, target, dry_run=dry_run)


if __name__ == "__main__":
    try:
        main(False)
    except FileNotFoundError as e:
        print(e)
        sys.exit(1)