#!/usr/local/bin/dumb-init /bin/bash
set -euo pipefail

MAKEPKG_OPTS=(-cCs --noconfirm --needed)
REPOADD_OPTS=()
SKIP_VERIFY="${SKIP_VERIFY:-}"

while getopts ":hRs" opt; do
	case "${opt}" in
	R) # Remove older version of package from repo
		REPOADD_OPTS+=(-R)
		;;
	s) # Skip PGP check for source signatures
		SKIP_VERIFY="true"
		;;
	h | *) # Display help
		echo "Usage:"
		grep '\s.)\ #' $0
		exit 1
		;;
	esac
done

SRC=${1:-}

# Override WORKDIR
cd /src

if [ ! -e PKGBUILD ]; then
	if [ -z "${SRC}" ]; then
		echo "No /src/PKGBUILD was found and no repo to clone was given as parameter"
		exit 1
	fi

	# Ensure permissions on src
	chown -R builder /src

	gosu builder git clone "${SRC}" /src/git
	cd /src/git
fi

[[ ${SKIP_VERIFY:-} == true ]] && {
	MAKEPKG_OPTS+=(--skippgpcheck)
}

[ -e /config/signing.asc ] && {
	gosu builder gpg --import </config/signing.asc
	MAKEPKG_OPTS+=(--sign)
	REPOADD_OPTS+=(--sign)
}

if [ -e /config/pacman.conf ]; then
	# Allow full overwrite of pacman.conf
	cp /config/pacman.conf /etc/pacman.conf
elif [ -e /config/pacman.conf.partial ]; then
	# Allow to provide a partial pacman.conf to append
	cat /config/pacman.conf.partial >>/etc/pacman.conf
fi

# Update pacman index and any updated package
pacman -Syyu --noconfirm

# Retrieve GPG keys if required
gosu builder getkeys.sh

# Execute the build itself
gosu builder makepkg ${MAKEPKG_OPTS[@]}

PACKAGE=($(ls *.pkg.tar.xz))

REPODB=$(find /repo -name '*.db.tar.xz')
if [ -z "${REPODB}" ]; then
	echo "No database found in /repo, not adding package."
	echo "The built package is available in ${PACKAGE}"
	exit 0
fi

for pkg_file in "${PACKAGE[@]}"; do
	gosu builder mv ${pkg_file}* /repo

	pushd /repo
	gosu builder repo-add ${REPOADD_OPTS[@]} ${REPODB} "${pkg_file}"
	popd
done