#!/bin/bash

base_packages='base base-devel sudo'

cmd="$(basename "${0%-build}")"
if [ "${cmd}" == 'multilib' ]; then
	repo='multilib'
	arch='x86_64'
	base_packages+=' gcc-multilib'
elif [ "${cmd}" == 'multilib-testing' ]; then
        repo='multilib-testing'
        arch='x86_64'
	base_packages+=' gcc-multilib'
else
	repo=${cmd%-*}
	arch=${cmd#*-}
fi
chroots='/var/tmp/archbuild'
clean_first=false

usage() {
	echo "usage $(basename "$0")"
	echo '    -c         Recreate the chroot before building'
	echo '    -r <dir>   Create chroots in this directory'
	exit 1
}

while getopts 'cr:' arg; do
	case "${arg}" in
		c) clean_first=true ;;
		r) chroots="$OPTARG" ;;
		*) usage ;;
	esac
done

if [ "$(uname -m)" == 'i686' -a "${arch}" != 'i686' ]; then
	echo 'You can only build i686 packages on this system'
	exit 1
fi

if ${clean_first} || [ ! -d "${chroots}/${repo}-${arch}" ]; then
	echo "Creating chroot for [${repo}] (${arch})..."
	sudo rm -rf ${chroots}/${repo}-${arch}
	sudo mkdir -p ${chroots}/${repo}-${arch}
	setarch ${arch} sudo mkarchroot \
		-C /usr/share/devtools/pacman-${repo}.conf \
		-M /usr/share/devtools/makepkg-${arch}.conf \
		${chroots}/${repo}-${arch}/root \
		${base_packages}
fi

echo "Building in chroot for [${repo}] (${arch})..."
setarch ${arch} sudo makechrootpkg -c -u -r ${chroots}/${repo}-${arch}