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#!/usr/bin/env bash

# Copyright (C) 2012-2015 Luke Shumaker <lukeshu@sbcglobal.net>
#
# License: GNU GPLv2+
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

lockarch() {
	local arch=$1
	lock 9 "${ABSLIBREDEST}/${arch}.lock" \
		"Waiting for a lock on the ABSLibre release directory for %s" "${arch}"
}

unlockarch() {
	lock_close 9
}

conf() {
	. libremessages
	. "$(librelib conf)"
	load_files libretools
	check_vars libretools "$@" || exit 1
}

################################################################################

status() {
	[[ -z $(git status -s .) ]]
}

download() {
	conf WORKDIR ABSLIBRERECV ABSLIBRESEND

	gitget -f -p "$ABSLIBRESEND" checkout "$ABSLIBRERECV" "$WORKDIR/abslibre" || return 1
}

release-client() {
	local repo=$1
	local arch=$2

	conf ABSLIBREDEST
	local pkgbase="$(load_PKGBUILD >/dev/null; printf '%s\n' "${pkgbase:-${pkgname}}")"
	local pkgdir="${ABSLIBREDEST}/${arch}/${repo}/${pkgbase}"
	lockarch "$arch"

	if [[ -e $pkgdir ]]; then
		rm -rf -- "$pkgdir"
	fi

	mkdir -p -- "$pkgdir"
	git ls-files -z | xargs -0 -I{} cp -- {} "$pkgdir"
}

release-server() {
	local repo=$1
	local repo=$2

	conf ABSLIBREDEST
	local pkgbase="$(load_PKGBUILD >/dev/null; printf '%s\n' "${pkgbase:-${pkgname}}")"
	local pkgdir="${ABSLIBREDEST}/${arch}/${repo}/${pkgbase}"
	lockarch "$arch"

	if [[ -e $pkgdir ]]; then
		rm -rf -- "$pkgdir"
	fi

	mkdir -p -- "$pkgdir"
	cp -- * "$pkgdir"

	if [[ -e "${ABSLIBREDEST}/${arch}/.git" ]]; then
		cd "$pkgdir"
		git add .
		git commit -q -m "xbs-abslibre: Release ${repo}/${pkgbase} for ${arch} (by $(id -un))"
	fi
}

unrelease() {
	local pkgbase=$1
	local repo=$2
	local arch=$3

	conf ABSLIBREDEST
	local pkgbase="$(load_PKGBUILD >/dev/null; printf '%s\n' "${pkgbase:-${pkgname}}")"
	local pkgdir="${ABSLIBREDEST}/${arch}/${repo}/${pkgbase}"
	lockarch "$arch"

	if [[ -f "${pkgdir}/PKGBUILD" ]]; then
		if [[ -e "${ABSLIBREDEST}/${arch}/.git" ]]; then
			git rm -qrf -- "$pkgdir"
			git commit -q -m "xbs-abslibre: Remove ${repo}/${pkgbase} from ${arch} (by $(id -un))"
		else
			rm -rf -- "$pkgdir"
		fi
	fi
}

move() {
	local repo_from=$1
	local repo_to=$2
	local pkgbase=$3

	conf ABSLIBREDEST ARCHES

	local mv
	local arch
	for arch in "${ARCHES[@]}" any; do
		lockarch "$arch"

		local dir_from="${ABSLIBREDEST}/${arch}/${repo_from}/${pkgbase}"
		local dir_to="${ABSLIBREDEST}/${arch}/${repo_to}/${pkgbase}"

		if [[ -f "${dir_from}/PKGBUILD" ]]; then
			if [[ -e "${ABSLIBREDEST}/${arch}/.git" ]]; then
				if [[ -e "${dir_to}" ]]; then
					git rm -qrf -- "$dir_to"
				fi
				mkdir -p -- "${dir_to%/*}"
				git mv -- "$dir_from" "$dir_to"
				git commit -q -m "xbs-abslibre: Move ${pkgbase} from ${repo_from} to ${repo_to} on ${arch} (by $(id -un))"
			else
				rm -rf -- "$dir_to"
				mkdir -p -- "${dir_to%/*}"
				mv "$dir_from" "$dir_to"
			fi
		fi
		unlock arch
	done
}

releasepath() {
	local pkgbase=$1
	local repo=$2
	local arch=$3

	conf ABSLIBREDEST
	local pkgdir="${ABSLIBREDEST}/${arch}/${repo}/${pkgbase}"

	lockarch "$arch"

	if [[ -f "${pkgdir}/PKGBUILD" ]]; then
		printf '%s\n' "$pkgdir"
		return 0
	fi

	return 1
}

case "$1" in
	status|download|release-client|release-server|unrelease|move|releasepath) "$@";;
	*) exit 127;;
esac