#!/usr/bin/env sh

######################################################################
# @author      : swytch
# @file        : switch-colors
# @license     : GPLv3
# @created     : Fridat Oct. 22, 2022 23:52:53 CEST
#
# @description : switch colorscheme system-wide
######################################################################


trim() { rev | cut -d'_' -f1 | rev; }

switch_scheme() {
        current="$(ls -l $XDG_CONFIG_HOME/X11/xcolors | trim)"
        [ "dark" = "$current" ] && new="light" || new="dark"
        select_nvim_scheme
        set_scheme "$new" "$nvim_scheme"
}

set_scheme() {
        [ "" = "$new" ] && exit 1
        xcolors="$XDG_STATE_HOME/xcolors"
        [ -f "$xcolors" ] && rm "$xcolors"
        ln -s "$XDG_CONFIG_HOME/X11/xcolors_$new" "$xcolors"
        xrdb -merge "$xcolors" && dunstify -u "low" "$new colorscheme set"
        echo "$nvim_scheme" > "$XDG_STATE_HOME/nvim_colorscheme"
        xrdb -merge "$xcolors" && dunstify -u "low" "neovim" "$nvim_scheme colorscheme set"
}

select_scheme() {
        new="$(ls "$XDG_CONFIG_HOME/X11" | grep -i "xcolors_" | trim | dmenu -i -l 5 -p "colorscheme:")"
}

select_nvim_scheme() {
        nvim_scheme="$(grep -i "$new" "$XDG_DATA_HOME/colorschemes" | cut -d'"' -f2 )"
}

if [ "-s" = "$1" -o "select" = "$1" ]; then
        select_scheme && select_nvim_scheme && set_scheme "$new" "$nvim_scheme"
else
        if [ ! "" = "$1" ]; then
                dunstify -u "normal" "Wrong parameter. Nothing performed" && exit 1
        else
                switch_scheme
        fi
fi

exit 0