#!/bin/bash
export DOTFILES=$(cd $(dirname $0) && pwd -P)
source "$DOTFILES/shell/common.sh"
set -e

#
install() {
    for topic in $*;
    do
        local path="$(dirname $0)/$topic"
        if [ -d "$path" ];
        then
            [ -f "$path/install" ] && . "$path/install"

            # Link available dotfiles (1 level deep)
            for file in "$1"/.[a-zA-Z]*
            do
                if [ -d "$file" ]; then
                    for subfile in "$file"/*
                    do
                        local base="$HOME/$(basename $file)"
                        [ ! -d "$base" ] && mkdir -p "$base"
                        ln -svf "$subfile" "$base"
                    done
                elif [ -f "$file" ]; then
                    ln -svf "$file" "$HOME"
                fi
            done

            # Symlink enabled topic folders
            if [ ! -h "$DOTFILES/.enabled.d/$(basename $path)" ]
            then
                ln -svf "$DOTFILES/$path" "$DOTFILES/.enabled.d"
            fi
        elif [ -f "$path" ]
        then
            install $(cat "$path")
        fi
    done
}

update() {
    for topic in $DOTFILES/.enabled.d/*/
    do
        [ -x "$topic/update" ] && . "$topic/update"
    done
}

clean() {
    # Temporarily move dotfiles to kill symlinks
    mv $DOTFILES /tmp/dotfiles
    # Clean up dead symlinks
    find -L $HOME -iname '.*' -type l -maxdepth 1 -exec rm -fv {} \;
    if [ -d "$HOME/.config" ]
    then
        find -L $HOME/.config -iname '.*' -type l -maxdepth 1 -exec rm -fv {} \;
    fi
    # Move it back
    mv /tmp/dotfiles $DOTFILES
}

usage() {
    echo "Nope"
    exit
}


##
(( "$#" == 0 )) && usage

COMMAND="$1"
shift
case "$COMMAND" in
    i|install) install $* ;;
    u|update) update ;;
    c|clean) clean ;;
    r|reinstall)
        clean
        install $*
        ;;
    *) usage ;;
esac