#!/bin/bash

showHelp() {
	echo "arch-pkg-builder"
	echo "----------------"
	echo "arch-pkg-builder [args] command [args]"
	echo ""
	echo "command :"
	echo "	list                 List packages infos"
	echo "	infos pkgname        Display package infos"
	echo "	build pkgname        Build and publish package"
	echo "	bump pkgname         Bump release and publish package"
	echo "	checkupdate pkgname   Check package update"
	echo "	checkupdateall        Check all packages update"
	echo "	update pkgname        Update package"
	echo "	updateall             Update all packages"
	echo ""
	echo "args :"
	echo "	--cnf configfile"
	echo "	--notify"
	echo "	--nopush"
	echo "	--dry-run"
	echo "	--dbg"
}

readSetting() { # $1=filename $2=name $3=defaultvalue
	local -r LINE=$(grep "^${2}=" "${1}")
	local -r VALUE=${LINE/${2}=/}
	if [ "${VALUE}" != "" ]; then
		echo "${VALUE}"
	else
		echo "${3}"
	fi
}
writeSetting() { #$1=filename $2=valuename $3=value
	local -r LINE=$(grep "^${2}=" "${1}")
	if [ "${LINE}" != "" ]; then
		sed -i "s/^${2}=.*/${2}=${3}/" "${1}"
	else
		echo "${2}=${3}" >> "${1}"
	fi
}
tblCell() { #$1=Text $2=Size
	local CELL=""
	CELL=$(printf "%-${2}s")
	CELL="${1}${CELL}"
	CELL=${CELL:0:${2}}
	echo "${CELL}"
}
getPluginFile() { # $1=PKGDIR $2=PKGNAME $3=PLUGINDIR
	local -r PKGDIR=${1}
	local -r PKGNAME=${2}
	local -r PLUGINDIR=${3}
	local -r PLUGIN=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "plugin" "manual")
	if [ "${PLUGIN}" == "custom" ]; then
		if [ ! -f "${PKGDIR}"/"${PKGNAME}"/plugin ]; then
			return 1
		fi
		echo "${PKGDIR}"/"${PKGNAME}"/plugin
	else
		if [ ! -f "${PLUGINDIR}"/"${PLUGIN}" ]; then
			return 1
		fi
		echo "${PLUGINDIR}"/"${PLUGIN}"
	fi
}
updatePkgSums() { # $1=FILES
	local -r FILES=${1}
	local TMPDIR=""
	TMPDIR=$(mktemp -d)
	cp -r "${FILES}/*" "${TMPDIR}"
	chown -R pkgbuilder "${TMPDIR}"
	sudo -u pkgbuilder updpkgsums "${TMPDIR}"/PKGBUILD
	cp -r "${TMPDIR}"/PKGBUILD "${FILES}/"
	rm -rf "${TMPDIR}"
}
notify() {
	if [ ${NOTIFY} == 0 ]; then
		return 0
	fi
	if [ "${NOTIFYMSG}" == "" ]; then
		return 0
	fi
	if [ ! -f /usr/bin/sendmail ]; then
		return 0
	fi
	local EMAIL=""
	EMAIL=$(readSetting "${CNFFILE}" "EMAIL" "")
	if [ "${EMAIL}" == "" ]; then
		return 0
	fi
	echo -e "subject:PKGBuilder - Notifications\n${NOTIFYMSG}" | sendmail "${EMAIL}"
}

pkgList() {
	if [ ! -d "${PKGDIR}" ]; then
		return 1
	fi
	for PKGDIRNAME in "${PKGDIR}"/*; do
		[[ -e "${PKGDIRNAME}" ]] || break
		local PKGNAME=""
		PKGNAME=$(basename "${PKGDIRNAME}")
		local VALUES=()
		VALUES+=("$(tblCell "${PKGNAME}" 30)")
		VALUE=$(tblCell "$(readSetting "${PKGDIRNAME}"/settings version)" 24)
		VALUES+=("${VALUE}")
		VALUES+=("$(tblCell "$(readSetting "${PKGDIRNAME}"/settings plugin)" 20)")
		VALUES+=("$(tblCell "$(readSetting "${PKGDIRNAME}"/settings target)" 20)")
		VALUE=$(tblCell "$(readSetting "${PKGDIRNAME}"/settings lastbuilddate)" 20)
		VALUES+=("${VALUE}")
		VALUES+=("$(readSetting "${PKGDIRNAME}"/settings lastbuildstatus)")
		echo "${VALUES[@]}"
	done
}
pkgInfos() { # $1=PKGNAME
	local -r PKGNAME=${1}
	if [ ! -f "${PKGDIR}"/"${PKGNAME}"/settings ]; then
		return 1
	fi
	cat "${PKGDIR}"/"${PKGNAME}"/settings
}
pkgCreate() { # $1=PKGNAME $2=MODELNAME
	local -r PKGNAME=${1}
	local -r MODELNAME=${2}
	if [ ! -d "${MODELDIR}"/"${MODELNAME}" ]; then
		return 1
	fi
	cp -r "${MODELDIR}"/"${MODELNAME}" "${PKGDIR}"/"${PKGNAME}"
}
pkgBuild() { # $1=PKGNAME
	local -r PKGNAME=${1}
	local -r BUILDDATE=$(date "+%Y.%m.%d %H:%M:%S")
	if [[ "${DRYRUN}" == "0" ]]; then
		writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "lastbuilddate" "${BUILDDATE}"
	fi
	local PLUGINFILE=""
	if ! PLUGINFILE=$(getPluginFile "${PKGDIR}" "${PKGNAME}" "${PLUGINDIR}"); then
		return 1
	fi
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGSETTINGS=${PKGDIR}/${PKGNAME}/settings
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGBUILD="${PKGDIR}/${PKGNAME}/files/PKGBUILD"
	. "${PLUGINFILE}"
	local PKGFILES=""
	if ! PKGFILES=$(plugin_getpkgfiles "${PKGDIR}" "${PKGNAME}"); then
		if [[ "${DRYRUN}" == "0" ]]; then
			writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "lastbuildstatus" "Error - No PKG files provided"
		fi
		return 1
	fi
	if [ ! -d "${PKGFILES}" ]; then
		if [[ "${DRYRUN}" == "0" ]]; then
			writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "lastbuildstatus" "Error - PKG files not found"
		fi
		return 1
	fi
	mkdir "${WORKDIR}"/.output
	local BUILDARGS=()
	BUILDARGS+=(-w "${WORKDIR}")
	BUILDARGS+=(-d /var/lib/pkgbuilder)
	BUILDARGS+=(-o "${WORKDIR}"/.output)
	local -r PKGMIRROR=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "mirror" "")
	if [[ "${PKGMIRROR}" != "" ]]; then
		BUILDARGS+=(-m "${PKGMIRROR}")
	fi
	# shellcheck disable=SC2207
	local -r PKGPKGS=($(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "pkgs" ""))
	if [[ "${PKGPKGS[*]}" != "" ]]; then
					for PKGPKG in "${PKGPKGS[@]}"; do  
									BUILDARGS+=(-p "${PKGPKG}")
					done
	fi
	local -r PKGNODEPS=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "nodeps" "")
	if [[ "${PKGNODEPS}" == "1" ]]; then
		BUILDARGS+=(-n)
	fi
	# shellcheck disable=SC2207
	local -r PKGREPOS=($(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "repos" ""))
	if [[ "${PKGREPOS[*]}" != "" ]]; then
		for PKGREPO in "${PKGREPOS[@]}"; do
			BUILDARGS+=(-r "${PKGREPO}")
		done
	fi
	if [[ "${DBGMODE}" == "1" ]]; then
		BUILDARGS+=(--dbg)
	fi
	BUILDARGS+=("${PKGFILES}")
	# shellcheck disable=SC2068
	if ! buildpkg ${BUILDARGS[@]}; then
		if [[ "${DRYRUN}" == "0" ]]; then
			writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "lastbuildstatus" "Error - Build"
		fi
		return 1
	fi
	local PKGFILENAME=""
	PKGFILENAME=$(ls "${WORKDIR}"/.output/"${PKGNAME}"*.pkg.tar.zst)
	local VERSION=""
	VERSION=$(pacman -Qp "${PKGFILENAME}" | awk -F ' ' '{print $2}')
	if [[ "${DRYRUN}" == "0" ]]; then
		writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "version" "${VERSION}"
		writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "builddate" "${BUILDDATE}"
		writeSetting "${PKGDIR}"/"${PKGNAME}"/settings "lastbuildstatus" "Ok"
	fi
	local -r PKGTARGET=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "target" "")
	if [[ "${DRYRUN}" == "0" ]]; then
		if [[ "${NOPUSH}" == "0" ]]; then
			if [ ! -d "${VARDIR}"/packages/"${PKGTARGET}" ]; then
				mkdir -p "${VARDIR}"/packages/"${PKGTARGET}"
			fi
			cp "${PKGFILENAME}" "${VARDIR}"/packages/"${PKGTARGET}"
		fi
	fi
	pkgPush "${PKGNAME}" "${PKGFILENAME}"
	rm -r "${WORKDIR}"/.output
}
pkgPush() { # $1=PKGNAME $2=PKGFILE
	local -r PKGNAME=${1}
	local -r PKGFILE=${2}

	if [[ ${NOPUSH} == 0 ]]; then
		local -r PKGTARGET=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "target" "")
		if [ -f "${TRGDIR}"/"${PKGTARGET}" ]; then
			local -r PKGTARGETTYPE=$(readSetting "${TRGDIR}"/"${PKGTARGET}" "type" "")
			local -r TARGETDEST=$(readSetting "${TRGDIR}"/"${PKGTARGET}" "dest" "")
			if [[ "${DRYRUN}" == "0" ]]; then
				case ${PKGTARGETTYPE} in
					dir)
						if [ -d "${TARGETDEST}" ]; then
							local -r TARGETFILENAME=${TARGETDEST}/$(basename "${PKGFILE}")
							cp "${PKGFILE}" "${TARGETFILENAME}"
							repo-add -n -R "${TARGETDEST}/${PKGTARGET}.db.tar.zst" "${TARGETFILENAME}"
						fi
					;;
					ssh)
						local -r TARGETPUBKEY=$(readSetting "${TRGDIR}"/"${PKGTARGET}" "pubkey" "")
						local -r TARGETSRV=$(awk -F':/' '{print $1}' <<< "${TARGETDEST}")
						local -r TARGETDIR=/$(awk -F':/' '{print $2}' <<< "${TARGETDEST}")
						local -r TARGETFILENAME=${TARGETDEST}/$(basename "${PKGFILE}")
						if [ "${TARGETPUBKEY}" == "" ]; then
							scp "${PKGFILE}" "${TARGETDEST}"
							ssh "${TARGETSRV}" repo-add -n -R "${TARGETDIR}"/"${PKGTARGET}".db.tar.zst "${TARGETDIR}"/"$(basename "${TARGETFILENAME}")"
						else
							scp -i "${TARGETPUBKEY}" "${PKGFILE}" "${TARGETDEST}"
							ssh -i "${TARGETPUBKEY}" "${TARGETSRV}" repo-add -n -R "${TARGETDIR}"/"${PKGTARGET}".db.tar.zst "${TARGETDIR}"/"$(basename "${TARGETFILENAME}")"
						fi
					;;
				esac
			fi
		fi
	fi
}
pkgBump() { # $1=PKGNAME
	local -r PKGNAME=${1}
	
	local PLUGINFILE=""
	if ! PLUGINFILE=$(getPluginFile "${PKGDIR}" "${PKGNAME}" "${PLUGINDIR}"); then
		return 1
	fi
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGSETTINGS=${PKGDIR}/${PKGNAME}/settings
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGBUILD="${PKGDIR}/${PKGNAME}/files/PKGBUILD"
	. "${PLUGINFILE}"
	if ! plugin_isbumpable; then
		return 1
	fi
	
	if [[ "${DRYRUN}" == "0" ]]; then
		if ! plugin_bump "${PKGDIR}" "${PKGNAME}"; then
			return 1
		fi
		pkgBuild "${PKGNAME}"
	fi
}
pkgCheckUpdate() { # $1=PKGNAME
	local -r PKGNAME=${1}
	
	local PLUGINFILE=""
	if ! PLUGINFILE=$(getPluginFile "${PKGDIR}" "${PKGNAME}" "${PLUGINDIR}"); then
		return 1
	fi
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGSETTINGS=${PKGDIR}/${PKGNAME}/settings
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGBUILD="${PKGDIR}/${PKGNAME}/files/PKGBUILD"
	. "${PLUGINFILE}"
	local -r PKGVERSION=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "version" "0")
	local -r PKGPLUGIN=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "plugin" "")
	local VALUES=()
	VALUES+=("$(tblCell "${PKGNAME}" 30)")
	VALUE=$(tblCell "$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings version)" 24)
	VALUES+=("${VALUE}")
	if ! plugin_isupdatable; then
		VALUES+=("    ")
		VALUES+=("$(tblCell 'Skipping' 25)")
		VALUES+=("$(tblCell "${PKGPLUGIN}" 25)")
		echo "${VALUES[@]}"
		return 0
	fi
	local -r ONLINEVERSION=$(plugin_getlatestversion)
	if [ "${ONLINEVERSION}" == "" ]; then
		return 1
	fi
	if [[ "${ONLINEVERSION}" != "${PKGVERSION}" ]]; then
		VALUES+=(" -> ")
		VALUES+=("$(tblCell "${ONLINEVERSION}" 25)")
		NOTIFYMSG+="${PKGNAME} ${PKGVERSION} -> ${ONLINEVERSION}\n"
	else
		VALUES+=("    ")
		VALUES+=("$(tblCell 'Up to date' 25)")
	fi
	VALUES+=("$(tblCell "${PKGPLUGIN}" 25)")
	echo "${VALUES[@]}"
}
pkgCheckUpdateAll() {
	if [ ! -d "${PKGDIR}" ]; then
		return 1
	fi
	for PKGDIRNAME in "${PKGDIR}"/*; do
		[[ -e "${PKGDIRNAME}" ]] || break
		local PKGNAME=""
		PKGNAME=$(basename "${PKGDIRNAME}")
		pkgCheckUpdate "${PKGNAME}"
	done
	notify
}
pkgUpdate() { # $1=PKGNAME
	local -r PKGNAME=${1}
	
	local PLUGINFILE=""
	if ! PLUGINFILE=$(getPluginFile "${PKGDIR}" "${PKGNAME}" "${PLUGINDIR}"); then
		return 1
	fi
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGSETTINGS=${PKGDIR}/${PKGNAME}/settings
	# shellcheck disable=SC2034  # Variable for plugin
	local -r PKGBUILD="${PKGDIR}/${PKGNAME}/files/PKGBUILD"
	. "${PLUGINFILE}"
	if ! plugin_isupdatable; then
		return 1
	fi
	
	local -r ONLINEVERSION=$(plugin_getlatestversion)
	if [ "${ONLINEVERSION}" == "" ]; then
		return 1
	fi
	local -r PKGVERSION=$(readSetting "${PKGDIR}"/"${PKGNAME}"/settings "version" "0")
	if [[ "${ONLINEVERSION}" == "${PKGVERSION}" ]]; then
		return 0
	fi

	if ! plugin_update; then
		return 1
	fi

	pkgBuild "${PKGNAME}"
}
pkgUpdateAll() {
	if [ ! -d "${PKGDIR}" ]; then
		return 1
	fi
	for PKGDIRNAME in "${PKGDIR}"/*; do
		[[ -e "${PKGDIRNAME}" ]] || break
		local PKGNAME=""
		PKGNAME=$(basename "${PKGDIRNAME}")
		pkgUpdate "${PKGNAME}"
	done
}

CNFFILE="/etc/pkgbuilder/config"
ARGCMD=""
ARGPKG=""
ARGMDL=""
NOTIFYMSG=""
NOTIFY=0
NOPUSH=0
DRYRUN=0
DBGMODE=0

while [[ ${#} -gt 0 ]]; do
  case ${1} in
		--help) showHelp; exit 0;;
		list | checkupdateall | updateall) ARGCMD="${1}"; shift;;
		infos | build | bump | checkupdate | update) ARGCMD="${1}"; ARGPKG="${2}"; shift; shift;;
		create) ARGCMD="${1}"; ARGMDL="${2}"; ARGPKG="${3}"; shift; shift;;
		--cnf) CNFFILE="${2}"; shift; shift;;
		--notify) NOTIFY=1; shift;;
		--nopush) NOPUSH=1; shift;;
		--dry-run) DRYRUN=1; shift;;
		--dbg) DBGMODE=1; shift;;
		*) shift;;
  esac
done

PKGDIR=$(readSetting "${CNFFILE}" "PKGDIR" "/etc/pkgbuilder/packages")
TRGDIR=$(readSetting "${CNFFILE}" "TRGDIR" "/etc/pkgbuilder/targets")
PLUGINDIR=$(readSetting "${CNFFILE}" "PLUGINDIR" "/usr/share/pkgbuilder/plugins")
MODELDIR=$(readSetting "${CNFFILE}" "MODELDIR" "/usr/share/pkgbuilder/models")
WORKDIR=$(readSetting "${CNFFILE}" "WORKDIR" "/var/cache/pkgbuilder")
VARDIR=$(readSetting "${CNFFILE}" "VARDIR" "/var/lib/pkgbuilder")

case ${ARGCMD} in
	list) pkgList;;
	infos) pkgInfos "${ARGPKG}";;
	create) pkgCreate "${ARGPKG}" "${ARGMDL}";;
	build) pkgBuild "${ARGPKG}";;
	bump) pkgBump "${ARGPKG}";;
	checkupdate) pkgCheckUpdate "${ARGPKG}";;
	checkupdateall) pkgCheckUpdateAll;;
	update) pkgUpdate "${ARGPKG}";;
	updateall) pkgUpdateall;;
	*) showHelp; exit 1;;
esac