#!/bin/sh

cd -P -- "$(readlink -e "$(dirname "$0")")" || exit 255
echo "=> Checking dependencies..."

command -v stow >/dev/null 2>&1 || { echo "Please install GNU Stow!"; exit 1; }

sleep 0.5
echo "=> Determining OS..."

if [ "$(. /etc/os-release && echo $ID)" = "artix" ]; then
    set -- "alacritty" "git" "mako" "nvim" "scripts" "sway" "swaylock" "swaynag" "waybar" "zsh"
    INSTALL="sudo pacman -S"
elif [ "$(. /etc/os-release && echo $ID)" = "fedora" ]; then
    set -- "alacritty" "nvim" "scripts" "zsh"
    INSTALL="sudo dnf install"
else
    echo "OS not supported!"
    exit 1
fi

sleep 0.5
echo "=> Installing dotfile packages..."

for pkg in "$@"; do
    sleep 0.1
    echo "  -> Stowing $pkg"
    
    # Symlink only the individual files instead of the entire directory
    [ "$pkg" = "nvim" ] && NVIM=1 && mkdir -p "$HOME/.config/$pkg"
    [ "$pkg" = "scripts" ] && DASH=1 && mkdir -p "$HOME/.local/bin"
    [ "$pkg" = "zsh" ] && ZSH=1 && mkdir -p "$HOME/.config/$pkg"

    LC_ALL="C" stow -t "$HOME" --ignore="README.md" "$pkg"
done

if [ -n "$ZSH" ]; then
    if ! grep -q "$(id -nu).*/zsh$" /etc/passwd; then
        command -v zsh >/dev/null 2>&1 || sleep 0.5 &&
            echo "=> Installing Zsh" && $INSTALL zsh

        sleep 0.5
        chsh -s /bin/zsh
    fi

    sleep 0.5
    echo "=> Initializing Zsh"
    echo "  :: Please run the following command from Zsh:"
    echo "  $ fast-theme ~/.config/zsh/fast-theme.ini"
fi

if [ -n "$NVIM" ] && [ ! -f "${XDG_DATA_HOME:-$HOME/.local/share}/nvim/site/autoload/plug.vim" ]; then
    command -v nvim >/dev/null 2>&1 || sleep 0.5 &&
        echo "=> Installing Neovim" && $INSTALL nvim
    
    sleep 0.5
    echo "=> Installing vim-plug and plugins for Neovim"
    curl -fLo "${XDG_DATA_HOME:-$HOME/.local/share}/nvim/site/autoload/plug.vim" --create-dirs \
        "https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim"
    nvim --headless +PlugInstall +qa
fi

if [ -n "$DASH" ] && ! command -v dash >/dev/null 2>&1; then
    sleep 0.5
    echo "=> Installing Dash"
    $INSTALL dash
fi

sleep 0.5
echo "=> Done!"