#!/bin/sh
source="https://git.hippoz.xyz/duck/repo/raw/branch/master"
tmpdir="/tmp"
setup() {
	prefix=$1
	cp ./spkg "${prefix}"/usr/bin/spkg
	chmod +x "${perfix}"/usr/bin/spkg
	mkdir "${prefix}"/etc/
	mv os-release "${prefix}"/etc/
}
removepkg() {
	pkgname=$1
	prefix=$2
	cd /usr/src/"${pkgname}" || exit 2
	{
		source ./PACKAGE
		"pkg_uninstall" "${prefix}"
	}
	sed "s/${pkgname} $(${pkgname} --version)//" "${prefix}"/var/cache/spkg.cache
}
instpkg() {
	pkgname=$1
	prefix=$2
	mkdir -p "${tmpdir}"/spkg/work/"${1}"-work/
	cd "${tmpdir}"/spkg/work/"${1}"-work/ || exit 2
	mkdir -p "${prefix}"/usr/src/"${pkgname}"
	wget "${prefix}"/usr/src/"${pkgname}" "${source}"/"${pkgname}"/PACKAGE	
	cd "${prefix}"/usr/src/"${pkgname}" || exit 2
	export PREFIX="${prefix}"
	export PKGNAME="${pkgname}"
	{
		source ./PACKAGE
		"pkg_install" "${prefix}"
	}
	sed a\ "${pkgname} $(${pkgname} --version)" "${prefix}"/var/cache/spkg.cache > "${prefix}"/var/cache/spkg.cache
}
update() {
	pkgname=$1
	prefix=$2
	version1=$(grep "${pkgname}" /var/cache/spkg.cache)
	version2=$(wget "${source}"/spkg.cache /tmp/spkg/web.spkg.cache && grep "${pkgname}" /tmp/spkg/web.spkg.cache )
	if [ "$version1" = "${version2}" ]; then
		echo 'Up to date.'
	else
		instpkg "${pkgname}" "${prefix}"
	fi
}
dbquery() {
	pkgname=$1
	wget "${source}"/spkg.cache /tmp/spkg/web.spkg.cache
	grep "${pkgname}" /tmp/spkg/web.spkg.cache
	rm /tmp/spkg/cache || mkdir 2>/dev/null /tmp/spkg
}
dblocal() {
	pkgname=$1
	grep "${pkgname}" /var/cache/spkg.cache
}
dblist() {
	cat /var/cache/spkg.cache
}
usage() {
	echo 'sPKG via WGET, to cache, just type in sudo spkg cache save.
			to install, just type in sudo spkg install.
			to update, just type in sudo spkg update.
			to setup (IMPORTANT!!!), just type in sudo spkg setup'
}
version() {
	echo "spkg 21.06.30.1b"
}
case "${1}" in
	setup)
		case "${2}" in
			--root-dir) setup "${3}" ;;
			*) setup "/" ;;
		esac ;;
	remove) 
		case "${2}" in
			--root-dir) removepkg "${3}" "${4}" ;;
			*) removepkg "${3}" "/" ;;
		esac ;;
	install)
		case "${2}" in
			--root-dir) instpkg "${4}" "${3}" ;;
	    	*)  instpkg "${3}" "/" ;;
		esac ;;
    cache)
		case "${2}" in
			clean)
				rm -rf /usr/src/* ;;
			rm)
				rm -rf /usr/src/"${3}" ;;
			save)
				case ${3} in
					to) cp -rv /usr/src/* "${4}"/ ;;
				esac ;;
			database)
				case "${3}" in
					lookup)
						case "${4}" in
							local)
								dblocal "${5}" ;;
							query)
								dbquery "${5}" ;;
						esac;; 
				esac ;;
		esac ;;
	list)
		dblist ;;
	update)
		update "${2}" ;;
    --help)
		usage ;;
    --version)
		version ;;
esac