#!/bin/sh

CONFIG_PATH=$HOME/global/system/config/

NID=$RANDOM

cmd=$(printf "Test\nSwitch\nCommit\nUpdate" | wofi -d -p 'Select')

kind=test
desc=Temporarily

case "$cmd" in

	Update)
		nix flake update --flake "$CONFIG_PATH"
		dunstify " NixOS - Config" "Updated Flake"
		;;&

	Switch | Commit | Update)
		git -C "$CONFIG_PATH" add .
		git -C "$CONFIG_PATH" commit -m "$(date '+%Y-%m-%d updates by auto-switch')"
		dunstify " NixOS - Config" "Created New Commit"

		case "$cmd" in
			Commit | Update) exit;
		esac

		kind=switch
		desc=Permanently
		;;&

	Test | Switch)
		dunstify -r "$NID" " NixOS - Config" "Switching Config $desc." --hints=int:value:0 -t 0

		declare -i i=0

		sudo nixos-rebuild "$kind" --flake "$CONFIG_PATH" 2>&1 | while IFS="" read -r line || [ -n "$line" ]; do
			case "$line" in
				these*)n=$(echo "$line" | grep -Eo '[0-9]*');;
				"building '"*)
						i+=1
						progress=$(($i * 100 / $n))
						dunstify -r "$NID" " NixOS - Config" "Switching Config $desc." --hints=int:value:"$progress" -t 0
					;;
				*error*)
					dunstify -r "$NID" -u 2 " NixOS - Config" "Error Loading Config"
					;;
				*Done.*)
					dunstify -r "$NID" " NixOS - Config" "Switching Config $desc.\nDone."
					;;
			esac
		done
		;;
esac