#!/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@

LIBDIR='@libdir@'

[[ -r ${LIBDIR}/util-msg.sh ]] && source ${LIBDIR}/util-msg.sh

import ${LIBDIR}/util.sh
import ${LIBDIR}/util-chroot.sh

working_dir=''
files=()

build_locales=false
keep_mirrors=false
keep_flag=''
nosetarch=false
branch=stable

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 '    -B <branch>   Set branch'
    echo '    -U <url>      Set a specific mirror'
    echo '    -c <dir>      Set pacman cache'
    echo '    -f <file>     Copy file from the host to the chroot'
    echo '    -s            Do not run setarch'
    echo '    -h            This message'
    exit 1
}

orig_argv=("$0" "$@")

opts='hC:M:S:c:f:s:U:B'

while getopts ${opts} arg; do
    case "${arg}" in
        C) pac_conf="$OPTARG" ;;
        M) makepkg_conf="$OPTARG" ;;
        S) mirrors_conf="$OPTARG" ;;
        c) cache_dir="$OPTARG" ;;
        f) files+=("$OPTARG") ;;
        s) nosetarch=true ;;
        B) branch="$OPTARG" ;;
        U) mirror="$OPTARG" ;;
        h|?) usage ;;
        *) error "invalid argument '%s'" "$arg"; usage ;;
    esac
done
shift $(($OPTIND - 1))

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

check_root

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 is_btrfs "$working_dir"; then
    rmdir "$working_dir"
    if ! btrfs subvolume create "$working_dir"; then
        die "Couldn't create subvolume for '%s'" "$working_dir"
    fi
    chmod 0755 "$working_dir"
fi

for file in "${files[@]}"; do
    mkdir -p "$(dirname "$working_dir$file")"
    cp "$file" "$working_dir$file"
done

basestrap_args=(-GMcd ${pac_conf:+-C "$pac_conf"} ${cache_dirs[@]/#/--cachedir=} -B ${branch:+-"$branch"} ${mirrors_conf:+-P "$mirrors_conf"})

[[ -n ${mirror} ]] && basestrap_args+=(-U "${mirror}")

_env=()
while read -r varname; do
    _env+=("$varname=${!varname}")
done < <(declare -x | sed -r 's/^declare -x ([^=]*)=.*/\1/' | grep -i '_proxy$')
env -i "${_env[@]}" \

basestrap "${basestrap_args[@]}" "$working_dir" "$@" || die 'Failed to install all packages'

echo "$version" > "$working_dir/.manjaro-tools"

chroot_args=(${pac_conf:+-C "$pac_conf"} ${makepkg_conf:+-M "$makepkg_conf"} ${cache_dir:+-c "$cache_dir"})
${nosetarch} && chroot_args+=(${nosetarch:+-s})

exec chroot-run \
    ${chroot_args[*]} \
    "$working_dir" locale-gen