err() {
	echo $1
	echo "exiting.."
	exit 1
}

header() {
        if [ "$DEBUG" -ge "1" ]; then
                echo please enter enter
                read a
                if [ "${a}" ]; then
                        if [ "$a" -ge "2" ]; then
                                set -x
		      fi
                        if [ "$a" == "0" ]; then
		      	       DEBUG=0
                        fi
                fi
        fi
	echo "#### $1 ####"
}

addpkg() {
	for i in $@; do
		pkgs+=( "$i" )
	done
}

enable_service() {
        for i in $@; do
                if ! [ -h /etc/runit/runsvdir/default/${i} ]; then
                        ln -s /etc/sv/$i /etc/runit/runsvdir/default/
                fi
        done
}

disable_service() {
        for i in $@; do
                rm -rf /etc/runit/runsvdir/default/${i}
                rm -rf /var/service/${i}
        done
}

reset() {
        if [ "$1" == "config" ]; then
                function config() { :; }
        elif [ "$1" == "packages" ]; then
                function packages() { :; }
	fi
}

input() {
        output=""
        echo "${1}"
        read -r -p "[${2}]: " output
        test -z "${output}" && output="${2}"
        return 0
}

#multiplechoice "networksystem" "dhcpcd" "networkmanager" "iwd" "none"

multiplechoice() {
        output=""
        local done=""
        local input=("${@}")
        #for i in $(seq 1 "$(( ${#input[@]} - 1 ))"); do
        for i in $(seq 0 "$(( ${#input[@]} - 1 ))"); do
                if [[ "${i}" == "0" ]]; then
                        choices="${input[$i]}"
                        use="${input[$i]}"
                else
                        choices="${choices}|${input[$i]}"
                        use+=" ${input[$i]}"
                fi
        done
        while input "[${choices}]: " "${input[0]}"; do
                for i in $(seq 0 "${#input[@]}"); do
                        if [[ "${output}" == "${input[$i]}" ]] || [[ "${output}" == "${input[$i]:0:2}" ]]; then
                                output="${input[$i]}"
                                done=1
                        fi
                done
                if [[ -z "${done}" ]]; then
                        echo wronginput "${output}"
                        echo use these: "${use}"
                else
                        break
                fi

        done
}

yesno() {
        local input=""
        local retval=""
        local default=""
        local q=""
        case "${2}" in
                Y|y) q="${1} [Y|n]:"; default=y;;
                N|n) q="${1} [y|N]:"; default=n;;
        esac
        while read -r -p "${q} " input; do
                test -z "${input}" && input="${default}"
                case "${input}" in
                        y*|Y*|*es*|*ES*|*Es*|*eS*|1)
                                retval=1
                                break
                                ;;
                        n*|N*|0)
                                retval=""
                                break
                                ;;
                        *) wronginput "${input}" "${choices[*]}"
                                ;;
                esac
        done
        if [[ -z "${retval}" ]]; then
                return 1
        else
                return 0
        fi
}

readin() {
        WHICH="$1"
        local -a choice
        for i in $(find ./etc/${WHICH}/ -type f | sort); do
                choice+=("$(basename $i)")
        done
        if [ "${#choice[@]}" -gt "1" ]; then
                header "$WHICH"
                multiplechoice "${choice[@]}"
        elif [ "${#choice[@]}" -eq "1" ]; then
                output=${choice[0]}
        fi
        if ! [ "${#choice[@]}" -eq "0" ]; then
                if [ -s ./etc/${WHICH}/$output ]; then
                         if grep -q "packages()" ./etc/${WHICH}/$output; then
                                . ./etc/${WHICH}/$output
                                packages
                                reset packages
                        fi

                        if grep -q "config()" ./etc/${WHICH}/$output; then
                                cp ./etc/${WHICH}/$output $tmp_target
                        fi
                fi
        fi
}

ignorepkg() {
        for i in $@; do
                ignorepkgs+=( "$i" )
        done
}

vmkdir() {
        mkdir -p /"$1"
        chmod 755 /"$1"
}

vinstall() {
        src="$1"; tgt="$3"; rights="$2"
        if [ "$4" ]; then
                cp "${src}" "/${tgt}/${4}"
                chmod="/${tgt}/${4}"
        else
                cp "${src}" "/${tgt}"
                chmod="/${tgt}"

        fi
        chmod -R "${rights}" "${chmod}"
}

vbin() {
        cp -rf "$1" /usr/bin/
        chmod 0755 /usr/bin/"$(basename $1)"
}