#!/usr/bin/env bash

# SPDX-License-Identifier: GPL-3.0
#
# kokkiemouse
# Twitter: @kokkiemouse
# Email  : kokkiemouse@gmail.com
#
# lfbs
#

set -e
# set -u

#export LANG=C

script_path=$(readlink -f "${0%/*}")
work_dir="${script_path}/work"
channels_dir="${script_path}/channels"
nfb_dir="${script_path}/nfb"
codename="32"
os_name="SereneLinux"
iso_name="Fedora"
language="ja_JP.UTF-8"
channel_name="serene"
cache_dir="${script_path}/cache"
bootsplash=false
arch="x86_64"

out_dir="${script_path}/out"
iso_label="${os_name}_${codename}_${arch}"
iso_publisher='Fascode Network <https://fascode.net>'
iso_application="${os_name} Live/Rescue CD"
iso_version="${codename}-$(date +%Y.%m.%d)"
iso_filename="${iso_name}-${iso_version}-${arch}.iso"
liveuser_name="fedora"
liveuser_password="fedora"
liveuser_shell="/usr/bin/zsh"

#-- language config --#

# Sets the default locale for the live environment.
# You can also place a package list for that locale name and install packages specific to that locale.
locale_name="en"
locale_gen_name="en_US.UTF-8"
locale_version="gl"
locale_time="UTC"
locale_fullname="global"

debug=false
cache_only=false
grub2_standalone_cmd=grub2-mkstandalone

start_time="$(date +%s)"

_msg_common() {
    if [[ "${debug}" = true ]]; then
        local _current_time
        local _time
        _current_time="$(date +%s)"
        _time="$(("${_current_time}"-"${start_time}"))"

        if [[ "${_time}" -ge 3600 ]]; then
            echo "[$(date -d @${_time} +%H:%M.%S)]$("${script_path}/echo_color" -t 6 "[LFBS Core]")"
        elif [[ "${_time}" -ge 60 ]]; then
            echo "[00:$(date -d @${_time} +%M.%S)]$("${script_path}/echo_color" -t 6 "[LFBS Core]")"
        else
            echo "[00:00.$(date -d @${_time} +%S)] $("${script_path}/echo_color" -t 6 "[LFBS Core]")"
        fi
    else
        "${script_path}/echo_color" -t 6 "[LFBS Core]"
    fi
}

# Show an INFO message
# _msg_info <message>
_msg_info() {
    local _msg
    _msg="${@}"
    echo "$(_msg_common)  $("${script_path}/echo_color" -t 2 "Info:") ${_msg}"
}

# Show an debug message
# _msg_debug <message>
_msg_debug() {
    if [[ "${debug}" = true ]]; then
        local _msg
        _msg="${@}"
        echo "$(_msg_common)  $("${script_path}/echo_color" -t 3 "Debug:") ${_msg}"
    fi
}

# Show an ERROR message then exit with status
# _msg_error <message> <exit code>
_msg_error() {
    local _msg
    local _error
    _msg="${1}"
    _error=${2}
    echo "$(_msg_common)  $("${script_path}/echo_color" -t 1 "Error:") ${_msg}"

    if [[ ! ${_error} = 0 ]]; then
        exit ${_error}
    fi
}

# Unmount chroot dir
umount_chroot () {
    local mount

    for mount in $(mount | awk '{print $3}' | grep "$(realpath "${work_dir}")" | sort -r); do
        if [[ ! "${mount}" == "${work_dir}/airootfs" ]]; then
            _msg_info "Unmounting ${mount}"
            umount -fl "${mount}"
        fi
    done
}

# Unmount chroot dir and airootfs
umount_chroot_airootfs () {
    local mount

    for mount in $(mount | awk '{print $3}' | grep "$(realpath "${work_dir}")" | sort -r); do
        _msg_info "Unmounting ${mount}"
        umount -fl "${mount}"
    done
}
# Helper function to run make_*() only one time.
run_once() {
    local name
    umount_chroot
    name="$1"

    if [[ ! -e "${work_dir}/build.${name}" ]]; then
        _msg_info "$(echo $name | sed "s@_@ @g") is starting."
        "${1}"
        _msg_info "$(echo $name | sed "s@_@ @g") was done!"
        touch "${work_dir}/build.${name}"
    fi
}

run_cmd() {
    local mount

    for mount in "dev" "dev/pts" "proc" "sys" "etc/resolv.conf"; do
    #for mount in "dev" "dev/pts" "proc" "sys" ; do
        if [[ "${mount}" == "etc/resolv.conf" ]]; then
            cp /etc/resolv.conf "${work_dir}/airootfs/${mount}"
        else
            mount --bind /${mount} "${work_dir}/airootfs/${mount}"
        fi
    done
    
    unshare --fork --pid chroot "${work_dir}/airootfs" "${@}"

    for mount in $(mount | awk '{print $3}' | grep "$(realpath "${work_dir}")" | sort -r); do
        if [[ ! "${mount}" == "${work_dir}/airootfs" ]]; then
            umount -fl "${mount}"
        fi
    done
}

_dnf_install() {    
    mount --bind "${cache_dir}" "${work_dir}/airootfs/dnf_cache"
    run_cmd dnf -c /dnf_conf install -y ${@}
}

# rm helper
# Delete the file if it exists.
# For directories, rm -rf is used.
# If the file does not exist, skip it.
# remove <file> <file> ...
remove() {
    local _list
    local _file
    _list=($(echo "$@"))

    for _file in "${_list[@]}"; do
        _msg_debug "Removeing ${_file}"

        if [[ -f ${_file} ]]; then
            rm -f "${_file}"
        elif [[ -d ${_file} ]]; then
            rm -rf "${_file}"
        fi
    done
}

# Show help
_usage () {
    echo "usage ${0} [options] [channel]"
    echo
    echo " General options:"
    echo
    echo "    -a | --arch <str>      Set architecture"
    echo "                           Default: ${arch}"
    echo "    -b | --bootsplash      Enable Plymouth"
    echo "    -l | --lang <lang>     Specifies the default language for the live environment"
    echo "                           Default: ${locale_name}"
    echo "    -m | --mirror <url>    Set apt mirror server."
    echo "                           Default: ${mirror}"
    echo "    -o | --out <out_dir>   Set the output directory"
    echo "                           Default: ${out_dir}"
    echo "    -w | --work <work_dir> Set the working directory"
    echo "                           Default: ${work_dir}"
    echo "    -c | --cache <cache_dir> Set the cache directory"
    echo "                           Default: ${cache_dir}"
    echo
    echo "    -d | --debug           "
    echo "    -h | --help            This help message and exit"
    echo
    echo "You can switch between installed packages, files included in images, etc. by channel."
    echo
    echo " Language for each architecture:"
    for _list in ${script_path}/system/locale-* ; do
        _arch="${_list#${script_path}/system/locale-}"
        echo -n "    ${_arch}"
        for i in $( seq 1 $(( ${blank} - 4 - ${#_arch} )) ); do
            echo -ne " "
        done
        _locale_name_list=$(cat ${_list} | grep -h -v ^'#' | awk '{print $1}')
        for _lang in ${_locale_name_list[@]};do
            echo -n "${_lang} "
        done
        echo
    done
    echo " Channel:"
    
    local _channel
    local channel_list
    local description

    for _channel in $(ls -l "${channels_dir}" | awk '$1 ~ /d/ {print $9 }'); do
        if [[ -n $(ls "${channels_dir}/${_channel}") ]] && [[ ! "${_channel}" = "share" ]]; then
            channel_list+=( "${_channel}" )
        fi
    done

    for _channel in ${channel_list[@]}; do
        if [[ -f "${channels_dir}/${_channel}/description.txt" ]]; then
            description=$(cat "${channels_dir}/${_channel}/description.txt")
        else
            description="This channel does not have a description.txt."
        fi

        echo -ne "    ${_channel}"

        for i in $( seq 1 $(( 23 - ${#_channel} )) ); do
            echo -ne " "
        done
        
        echo -ne "${description}\n"
    done
}

dnfstrap() {
    if [[ ! -d "${cache_dir}" ]]; then
        mkdir -p "${cache_dir}"
    fi
    cp -rf "${script_path}/system/dnfconf.conf" "${work_dir}/airootfs/dnf_conf"
    if [[ ! -d "${work_dir}/airootfs/dnf_cache" ]]; then
        mkdir -p "${work_dir}/airootfs/dnf_cache"
    fi
    mount --bind "${cache_dir}" "${work_dir}/airootfs/dnf_cache"
    dnf -c "${work_dir}/airootfs/dnf_conf" --installroot="${work_dir}/airootfs" $(${script_path}/system/repository-json-parser.py ${script_path}/system/repository.json) install ${@} -y
    umount -fl "${work_dir}/airootfs/dnf_cache"
}

make_basefs() {
    _msg_info "Installing Fedora to '${work_dir}/airootfs'..."
    dnfstrap @Core yamad-repo 
    _msg_info "${codename} installed successfully!"
    
    echo 'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:${PATH}' > "${work_dir}/airootfs/etc/bash.bashrc"
    mount --bind "${cache_dir}" "${work_dir}/airootfs/dnf_cache"
    run_cmd dnf -c /dnf_conf update -y
    run_cmd dnf -c /dnf_conf -y remove $(run_cmd dnf -c /dnf_conf repoquery --installonly --latest-limit=-1 -q)
    # run_cmd apt-get upgrade
}


# Parse files
parse_files() {
    #-- ロケールを解析、設定 --#
    local _get_locale_line_number _locale_config_file _locale_name_list _locale_line_number _locale_config_line

    # 選択されたロケールの設定が描かれた行番号を取得
    _locale_config_file="${script_path}/system/locale-${arch}"
    _locale_name_list=($(cat "${_locale_config_file}" | grep -h -v ^'#' | awk '{print $1}'))
    _get_locale_line_number() {
        local _lang _count=0
        for _lang in ${_locale_name_list[@]}; do
            _count=$(( _count + 1 ))
            if [[ "${_lang}" == "${locale_name}" ]]; then echo "${_count}"; return 0; fi
        done
        echo -n "failed"
    }
    _locale_line_number="$(_get_locale_line_number)"

    # 不正なロケール名なら終了する
    [[ "${_locale_line_number}" == "failed" ]] && _msg_error "${locale_name} is not a valid language." "1"

    # ロケール設定ファイルから該当の行を抽出
    _locale_config_line=($(cat "${_locale_config_file}" | grep -h -v ^'#' | grep -v ^$ | head -n "${_locale_line_number}" | tail -n 1))

    # 抽出された行に書かれた設定をそれぞれの変数に代入
    # ここで定義された変数のみがグローバル変数
    locale_name="${_locale_config_line[0]}"
    locale_gen_name="${_locale_config_line[1]}"
    locale_version="${_locale_config_line[2]}"
    locale_time="${_locale_config_line[3]}"
    locale_fullname="${_locale_config_line[4]}"
}

prepare_build() {
    if [[ ${EUID} -ne 0 ]]; then
        _msg_error "This script must be run as root." 1
    fi
    umount_chroot_airootfs
    # Check codename
    if [[ -z "$(grep -h -v ^'#' ${channels_dir}/${channel_name}/codename.${arch} | grep -x ${codename})" ]]; then
        _msg_error "This codename (${channel_name}) is not supported on this channel (${codename})."
    fi
    if [[ ! -d "${work_dir}/squashfsroot/LiveOS/" ]]; then
        mkdir -p "${work_dir}/squashfsroot/LiveOS/"
        mkdir -p "${work_dir}/airootfs/"
        _msg_info "Make rootfs image..."
        truncate -s 6G "${work_dir}/squashfsroot/LiveOS/rootfs.img"
        _msg_info "Format rootfs image..."
        mkfs.ext4 -F "${work_dir}/squashfsroot/LiveOS/rootfs.img"
    fi    
    mkdir -p "${out_dir}"
    _msg_info "Mount rootfs image..."
    mount -o loop,rw,sync "${work_dir}/squashfsroot/LiveOS/rootfs.img" "${work_dir}/airootfs"

}

make_systemd() {
    _dnf_install dbus-tools
    run_cmd dbus-uuidgen --ensure=/etc/machine-id
    if [[ ! -d "${work_dir}/airootfs/var/lib/dbus" ]]; then
        run_cmd mkdir /var/lib/dbus
    fi
    run_cmd ln -sf /etc/machine-id /var/lib/dbus/machine-id
}
make_repo_packages() {
    remove "${work_dir}/airootfs/dnfrepopkglist"
    #_apt_install initramfs-tools
    # run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive apt-get dist-upgrade --yes'

    if [[ -f "${channels_dir}/share/add_repo.${arch}" ]]; then
        grep -h -v ^'#' "${channels_dir}/share/add_repo.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfrepopkglist"
    fi

    if [[ -f "${channels_dir}/${channel_name}/add_repo.${arch}" ]]; then
        grep -h -v ^'#' "${channels_dir}/${channel_name}/add_repo.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfrepopkglist"
    fi

    if [[ -s "${work_dir}/airootfs/dnfrepopkglist" ]]; then
        mount --bind "${cache_dir}" "${work_dir}/airootfs/dnf_cache"
        sed -i -e "s|\${codename}|${codename}|g" "${work_dir}/airootfs/dnfrepopkglist"
        run_cmd env -i bash -c 'dnf -y --nogpgcheck -c /dnf_conf install $(echo $(<dnfrepopkglist))'
    fi

    remove "${work_dir}/airootfs/dnfrepopkglist"
}
make_dnf_packages() {
    remove "${work_dir}/airootfs/dnfpkglist"
    #_apt_install initramfs-tools
    # run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive apt-get dist-upgrade --yes'

    if [[ -f "${channels_dir}/share/packages.${arch}" ]]; then
        grep -h -v ^'#' "${channels_dir}/share/packages.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfpkglist"
    fi
    if [[ -f "${channels_dir}/share/packages-${locale_name}.${arch}" ]]; then
        grep -h -v ^'#' "${channels_dir}/share/packages-${locale_name}.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfpkglist"
    fi

    if [[ -f "${channels_dir}/${channel_name}/packages.${arch}" ]]; then
        grep -h -v ^'#' "${channels_dir}/${channel_name}/packages.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfpkglist"
    fi

    if [[ -f "${channels_dir}/${channel_name}/packages-${locale_name}.${arch}" ]]; then
        grep -h -v ^'#' "${channels_dir}/${channel_name}/packages-${locale_name}.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfpkglist"
    fi
    if [[ ${bootsplash} == true ]]; then
        if [[ -f "${channels_dir}/share/packages_plymouth.${arch}" ]]; then
            grep -h -v ^'#' "${channels_dir}/share/packages_plymouth.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfpkglist"
        fi
        
        if [[ -f "${channels_dir}/${channel_name}/packages_plymouth.${arch}" ]]; then
            grep -h -v ^'#' "${channels_dir}/${channel_name}/packages_plymouth.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/dnfpkglist"
        fi
    fi
    if [[ -s "${work_dir}/airootfs/dnfpkglist" ]]; then
        mount --bind "${cache_dir}" "${work_dir}/airootfs/dnf_cache"
        run_cmd env -i bash -c 'dnf -y --nogpgcheck -c /dnf_conf install $(echo $(<dnfpkglist))'
    fi

    remove "${work_dir}/airootfs/dnfpkglist"
}

make_cp_airootfs() {
    local _copy_airootfs

    _copy_airootfs() {
        local _dir="${1%/}"
        if [[ -d "${_dir}" ]]; then
            cp -af "${_dir}"/* "${work_dir}/airootfs"
        fi
    }
    _copy_airootfs "${channels_dir}/share/airootfs"
    _copy_airootfs "${channels_dir}/share/airootfs.${locale_name}"
    _copy_airootfs "${channels_dir}/${channel_name}/airootfs"
    _copy_airootfs "${channels_dir}/${channel_name}/airootfs.${locale_name}"
}

make_config() {
    # customize_airootfs options
    # -b                        : Enable boot splash.
    # -d                        : Enable debug mode.
    # -g <locale_gen_name>      : Set locale-gen.
    # -i <inst_dir>             : Set install dir
    # -k <kernel config line>   : Set kernel name.
    # -o <os name>              : Set os name.
    # -p <password>             : Set password.
    # -s <shell>                : Set user shell.
    # -t                        : Set plymouth theme.
    # -u <username>             : Set live user name.
    # -x                        : Enable bash debug mode.
    # -r                        : Enable rebuild.
    # -z <locale_time>          : Set the time zone.
    # -l <locale_name>          : Set language.
    #
    # -j is obsolete in AlterISO3 and cannot be used.
    # -k changed in AlterISO3 from passing kernel name to passing kernel configuration.
    local _airootfs_script_options _run_script
    _airootfs_script_options="-p ${liveuser_password} -u ${liveuser_name} -o ${os_name} -s ${liveuser_shell} -a ${arch} -g ${locale_gen_name} -l ${locale_name} -z ${locale_time} "
    if [[ ${bootsplash} == true ]]; then
        _airootfs_script_options="${_airootfs_script_options} -b"
    fi
    _run_script() {
        local _file
        for _file in ${@}; do
            if [[ -f "${work_dir}/airootfs${_file}" ]]; then run_cmd "${_file}" ${_airootfs_script_options}; fi
            if [[ -f "${work_dir}/airootfs${_file}" ]]; then chmod 755 "${work_dir}/airootfs${_file}"; fi
        done
    }

    _run_script "/root/customize_airootfs.sh" "/root/customize_airootfs_${channel_name}.sh"
}

make_clean() {
    mount --bind "${cache_dir}" "${work_dir}/airootfs/dnf_cache"
    run_cmd dnf -c /dnf_conf -y remove $(run_cmd dnf -c /dnf_conf repoquery --installonly --latest-limit=-1 -q)
}

make_squashfs() {
    # prepare
    remove "${bootfiles_dir}"
    if [[ -d "${work_dir}/airootfs/dnf_cache" ]]; then
        rm -rf "${work_dir}/airootfs/dnf_cache"
    fi
    mkdir -p "${bootfiles_dir}"/{grub,LiveOS,boot,isolinux}
    #generate initrd
    _msg_info "make initrd..."
    run_cmd dracut --xz --add "dmsquash-live convertfs pollcdrom" --no-hostonly --no-early-microcode /boot/initrd0 `run_cmd ls /lib/modules`
    cp ${work_dir}/airootfs/boot/vmlinuz-$(run_cmd ls /lib/modules) ${bootfiles_dir}/boot/vmlinuz
    mv ${work_dir}/airootfs/boot/initrd0 ${bootfiles_dir}/boot/initrd
    #cp isolinux
    cp "${nfb_dir}"/isolinux/* "${bootfiles_dir}/isolinux/"
    # make squashfs
    remove "${work_dir}/airootfs/boot"
    mkdir "${work_dir}/airootfs/boot"
    cp ${bootfiles_dir}/boot/vmlinuz ${work_dir}/airootfs/boot/vmlinuz-$(run_cmd ls /lib/modules)
    kernelkun=$(run_cmd ls /lib/modules)
    echo -e "\nkernel-install add ${kernelkun} /boot/vmlinuz-${kernelkun}" >> ${work_dir}/airootfs/usr/share/calamares/final-process
    umount "${work_dir}/airootfs"
    _msg_info "Minimize rootfs..."
    resize2fs -M "${work_dir}/squashfsroot/LiveOS/rootfs.img"
    _msg_info "Compress rootfs.."
    mksquashfs "${work_dir}/squashfsroot/" "${bootfiles_dir}/LiveOS/squashfs.img" -noappend -no-recovery -comp zstd -Xcompression-level 19 -b 1048576
    _msg_info "Deleting block image..."
    rm -rf "${work_dir}/squashfsroot/LiveOS/rootfs.img"
}

make_nfb() {
    touch "${bootfiles_dir}/fedora_lfbs"
    # isolinux setup
    sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/isolinux.cfg" | sed "s|%CD_LABEL%|${iso_label}|g"  > "${bootfiles_dir}/isolinux/isolinux.cfg"
    #grub
    if [[ ${bootsplash} = true ]]; then
        sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/grub.cfg" | sed "s|%CD_LABEL%|${iso_label}|g" | sed "s|selinux=0|selinux=0 quiet splash|g" > "${bootfiles_dir}/grub/grub.cfg"
    else
        sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/grub.cfg" | sed "s|%CD_LABEL%|${iso_label}|g" > "${bootfiles_dir}/grub/grub.cfg"
    fi
    sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/grub.cfg" | sed "s|%CD_LABEL%|${iso_label}|g" | sed "s|selinux=0|selinux=0 quiet splash|g" > "${bootfiles_dir}/grub/grub.cfg"
}
make_efi() {
    # UEFI 32bit (ia32)
    ${grub2_standalone_cmd} \
        --format=i386-efi \
        --output="${bootfiles_dir}/grub/bootia32.efi" \
        --locales="" \
        --fonts="" \
        "boot/grub/grub.cfg=${bootfiles_dir}/grub/grub.cfg"
    
    # UEFI 64bit (x64)
    ${grub2_standalone_cmd} \
        --format=x86_64-efi \
        --output="${bootfiles_dir}/grub/bootx64.efi" \
        --locales="" \
        --fonts="" \
        "boot/grub/grub.cfg=${bootfiles_dir}/grub/grub.cfg"

    # create efiboot.img
    truncate -s 200M "${bootfiles_dir}/grub/efiboot.img"
    mkfs.fat -F 16 -f 1 -r 112 "${bootfiles_dir}/grub/efiboot.img"
    mkdir "${bootfiles_dir}/mnt"
    mount "${bootfiles_dir}/grub/efiboot.img" "${bootfiles_dir}/mnt"
    mkdir -p "${bootfiles_dir}/mnt/efi/boot"
    cp "${bootfiles_dir}/grub/bootia32.efi" "${bootfiles_dir}/mnt/efi/boot"
    cp "${bootfiles_dir}/grub/bootx64.efi" "${bootfiles_dir}/mnt/efi/boot"
    umount -d "${bootfiles_dir}/mnt"
    remove "${bootfiles_dir}/mnt"
}
make_iso() {
    cd "${bootfiles_dir}"

    # create checksum (using at booting)
    bash -c "(find . -type f -print0 | xargs -0 md5sum | grep -v "\./md5sum.txt" > md5sum.txt)"

    # create iso
    xorriso \
        -as mkisofs \
        -iso-level 3 \
        -full-iso9660-filenames \
        -volid "${iso_label}" \
        -appid "${iso_application}" \
        -publisher "${iso_publisher}" \
        -preparer "prepared by LFBS" \
        -b isolinux/isolinux.bin \
            -no-emul-boot \
            -boot-load-size 4 \
            -boot-info-table \
        -eltorito-alt-boot \
            -eltorito-platform efi \
            -eltorito-boot EFI/efiboot.img \
            -no-emul-boot \
        -isohybrid-mbr "${bootfiles_dir}/isolinux/isohdpfx.bin" \
        -isohybrid-gpt-basdat \
        -eltorito-catalog isolinux/boot.cat \
        -output "${out_dir}/${iso_filename}" \
        -graft-points \
            "." \
            "/isolinux/isolinux.bin=isolinux/isolinux.bin" \
            "/EFI/efiboot.img=grub/efiboot.img"
    
    cd - > /dev/null
}

make_checksum() {
    cd "${out_dir}"
    _msg_info "Creating md5 checksum ..."
    md5sum "${iso_filename}" > "${iso_filename}.md5"

    _msg_info "Creating sha256 checksum ..."
    sha256sum "${iso_filename}" > "${iso_filename}.sha256"
    cd - > /dev/null 2>&1
    umount_chroot_airootfs
}

# 引数解析（）
# 参考記事：https://0e0.pw/ci83 https://0e0.pw/VJlg

_opt_short="w:l:o:hba:-:m:c:d"
_opt_long="help,arch:,codename:,debug,help,lang,mirror:,out:,work,cache-only,bootsplash"
OPT=$(getopt -o ${_opt_short} -l ${_opt_long} -- "${@}")

if [[ ${?} != 0 ]]; then
    exit 1
fi

eval set -- "${OPT}"

while :; do
    case ${1} in
        -a | --arch)
            arch="${2}"
            shift 2
            ;;
        -b | --bootsplash)
            bootsplash=true
            shift 1
            ;;
        -c | --cache)
            cache_dir="${2}"
            shift 2
            ;;
        -d | --debug)
            debug=true
            shift 1
            ;;
        -h | --help)
            _usage
            exit 0
            ;;
        -m | --mirror)
            mirror="${2}"
            shift 2
            ;;
        -l | --lang)
            locale_name="${2}"
            shift 2
            ;;
        -o | --out)
            out_dir="${2}"
            shift 2
            ;;
        -w | --work)
            work_dir="${2}"
            shift 2
            ;;
        --cache-only)
            cache_only=true
            shift 1
            ;;
        --)
            shift
            break
            ;;
        *)
            _msg_error "Invalid argument '${1}'"
            _usage 1
            ;;
    esac
done
if [[ -f /etc/arch-release ]]; then
    grub2_standalone_cmd=grub-mkstandalone
fi
bootfiles_dir="${work_dir}/bootfiles"
trap  umount_chroot_airootfs 0 2 15

if [[ -n "${1}" ]]; then
    channel_name="${1}"
    if [[ "${channel_name}" = "umount" ]]; then
        umount_chroot_airootfs
        exit 0
    fi
    if [[ "${channel_name}" = "clean" ]]; then
        umount_chroot_airootfs
        _msg_info "deleting work dir..."
        remove "${work_dir}"
        exit 0
    fi
    check_channel() {
        local channel_list
        local i
        channel_list=()
        
        for _channel in $(ls -l "${channels_dir}" | awk '$1 ~ /d/ {print $9 }'); do
            if [[ -n "$(ls "${channels_dir}/${_channel}")" ]] && [[ ! "${_channel}" = "share" ]]; then
                channel_list+=( "${_channel}" )
            fi
        done

        for i in ${channel_list[@]}; do
            if [[ "${i}" = "${channel_name}" ]]; then
                echo -n "true"
                return 0
            fi
        done

        echo -n "false"
        return 1
    }

    if [[ "$(check_channel ${channel_name})" = false ]]; then
        _msg_error "Invalid channel ${channel_name}"
        exit 1
    fi
fi
iso_filename="${iso_name}-${codename}-${channel_name}-${locale_name}-$(date +%Y.%m.%d)-${arch}.iso"
umount_chroot_airootfs
if [[ -d "${work_dir}" ]]; then
    _msg_info "deleting work dir..."
    remove "${work_dir}"
fi

prepare_build
parse_files
run_once make_basefs
run_once make_systemd
run_once make_repo_packages
run_once make_dnf_packages
run_once make_cp_airootfs
run_once make_config
run_once make_clean
run_once make_squashfs
run_once make_nfb
run_once make_efi
run_once make_iso
run_once make_checksum