#!/bin/sh

pull_backup() {
	check_args $# 2
	if [ ! -d "$BACKUPS_PATH/$2" ]; then
		invalid_path_msg "$1:$2"
		return 1;
	fi

	git -C $BACKUPS_PATH/$2 pull $1
}

push_backup() {
	check_args $# 2
	if [ ! -d "$BACKUPS_PATH/$2" ]; then
		invalid_path_msg "$1:$2"
		return 1;
	fi

	git -C $BACKUPS_PATH/$2 push $1
}

overwrite_local() {
	if [ ! -e "$BACKUPS_PATH/$1/$2" ]; then
		printf "The backup path does not exist\n"
		return 1;
	fi
	case "$1" in
		configs) cp -r "$BACKUPS_PATH/$1/$2" "$XDG_CONFIG_HOME/$2";;
		macros) cp -r "$BACKUPS_PATH/$1/$2" "$HOME/Macros/$2";;
		*) invalid_path_msg "$1"; return 1;;
	esac
}

overwrite_backup() {
	if [ git diff --stat $BACKUPS_PATH/$1 ]; then
		printf "There are uncommited changes in $1\n"
		return 1
	fi
	case "$1" in
		configs) cp -r "$XDG_CONFIG_HOME/$2" "$BACKUPS_PATH/$1/$2";;
		macros) cp -r "$HOME/Macros/$2" "$BACKUPS_PATH/$1/$2";;
		*) invalid_path_msg "$1"; return 1;;
	esac
}

invalid_path_msg() {
	printf "That path is invalid. $@\n"
}

check_args() {
	if [ $1 -ne $2 ]; then
		printf "Invalid number of arguments. Expected $2\n"
		exit;
	fi
	return 0;
}

case "$1" in
	pull-backup)
		case "$2" in 
			configs) pull_backup configs;;
			macros) pull_backup macros;;
		esac
		;;
	overwrite-local) overwrite_local $2 $3;;
	overwrite-backup) overwrite_backup $2 $3;;
	pull-backup) pull_backup $2 $3;;
	push-backup) push_backup $2 $3;;
	push-backup) overwrite_backup $2 $3;;
	*) printf "No such option\n";;
esac