#!/bin/bash
#
# 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; version 2 of the License.
#
# 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.

version=@version@

[[ -r @libdir@/util-msg.sh ]] && source @libdir@/util-msg.sh
[[ -r @libdir@/util.sh ]] && source @libdir@/util.sh

working_dir=''
build_locales=false

usage() {
	echo "Usage: ${0##*/} [options] working-dir package-list..."
	echo ' options:'
	echo '    -C <file>     Location of a pacman config file'
	echo '    -M <file>     Location of a makepkg config file'
	echo '    -S <file>     Location of a pacman-mirrors config file'
	echo '    -c <dir>      Set pacman cache'
	echo '    -L            Use build locale.gen en/de'
	echo '    -h            This message'
	exit 1
}

orig_argv=("$@")

while getopts 'hLC:M:S:c:' arg; do
	case "$arg" in
		C) pac_conf="$OPTARG" ;;
		M) makepkg_conf="$OPTARG" ;;
		S) mirrors_conf="$OPTARG" ;;
		c) cache_dir="$OPTARG" ;;
		L) build_locales=true; bl_args+=(-L) ;;
		h|?) usage ;;
		*) error "invalid argument '$arg'"; usage ;;
	esac
done
shift $(($OPTIND - 1))

(( $# < 2 )) && die 'You must specify a directory and one or more packages.'

check_root "$0" "${orig_argv[@]}"

working_dir="$(readlink -f $1)"
shift 1

[[ -z $working_dir ]] && die 'Please specify a working directory.'

if [[ -z $cache_dir ]]; then
	cache_dirs=($(pacman -v $cache_conf 2>&1 | grep '^Cache Dirs:' | sed 's/Cache Dirs:\s*//g'))
else
	cache_dirs=(${cache_dir})
fi

umask 0022

#[[ -e $working_dir ]] && die "Working directory '%s' already exists" "$working_dir"

#mkdir -p "$working_dir"
[[ ! -d $working_dir ]] && mkdir -p "$working_dir"

lock 9 "${working_dir}.lock" "Locking chroot"

if [[ $(stat -f -c %T "$working_dir") == btrfs ]]; then
	rmdir "$working_dir"
	if ! btrfs subvolume create "$working_dir"; then
		die "Couldn't create subvolume for '%s'" "$working_dir"
	fi
	chmod 0755 "$working_dir"
fi

basestrap -GMcd ${pac_conf:+-C "$pac_conf"} "$working_dir" \
  "${cache_dirs[@]/#/--cachedir=}" "$@" || die 'Failed to install all packages'
  
echo "$version" > "$working_dir/.manjaro-tools"

if ${build_locales};then
    printf '%s.UTF-8 UTF-8\n' en_US de_DE > "$working_dir/etc/locale.gen"
    echo 'LANG=C' > "$working_dir/etc/locale.conf"
fi

exec chroot-run \
	${pac_conf:+-C "$pac_conf"} \
	${makepkg_conf:+-M "$makepkg_conf"} \
	${mirrors_conf:+-S "$mirrors_conf"} \
	${cache_dir:+-c "$cache_dir"} \
	${bl_args[*]} \
	"$working_dir" locale-gen