# vim: set ft=sh:

run_hook() {
    if [[ -n "${ip}" && -n "${parabolaiso_http_srv}" ]]; then

        parabolaiso_http_srv=$(eval echo ${parabolaiso_http_srv})
        [[ -z "${parabolaiso_http_spc}" ]] && parabolaiso_http_spc="75%"

        mount_handler="parabolaiso_pxe_http_mount_handler"
    fi
}

# Fetch a file with CURL
#
# $1 URL
# $2 Destination directory inside httpspace/${parabolaisobasedir}
_curl_get() {
    local _url="${1}"
    local _dst="${2}"

    msg ":: Downloading '${_url}'"
    if ! curl -L -f -o "/run/parabolaiso/httpspace/${parabolaisobasedir}${_dst}/${_url##*/}" --create-dirs "${_url}"; then
        echo "ERROR: Downloading '${_url}'"
        echo "   Falling back to interactive prompt"
        echo "   You can try to fix the problem manually, log out when you are finished"
        launch_interactive_shell
    fi
}

parabolaiso_pxe_http_mount_handler () {
    newroot="${1}"

    msg ":: Mounting /run/parabolaiso/httpspace (tmpfs) filesystem, size='${parabolaiso_http_spc}'"
    mkdir -p "/run/parabolaiso/httpspace"
    mount -t tmpfs -o size="${parabolaiso_http_spc}",mode=0755 httpspace "/run/parabolaiso/httpspace"

    local _aitab_url="${parabolaiso_http_srv}${aitab#/run/parabolaiso/bootmnt/}"
    local _aitab_file="/run/parabolaiso/httpspace/${aitab#/run/parabolaiso/bootmnt/}"

    _curl_get "${_aitab_url}" "/"

    local aitab_img aitab_mnt aitab_arch aitab_sfs_comp aitab_fs_type aitab_fs_size
    while read aitab_img aitab_mnt aitab_arch aitab_sfs_comp aitab_fs_type aitab_fs_size; do
        [[ "${aitab_img#\#}" != "${aitab_img}" ]] && continue
        [[ "${aitab_arch}" != "any" && "${aitab_arch}" != "${arch}" ]] && continue
        if [[ "${aitab_fs_type}" != "none" ]]; then
            _curl_get "${parabolaiso_http_srv}${parabolaisobasedir}/${aitab_arch}/${aitab_img}.fs.sfs" "/${aitab_arch}"
        else
            _curl_get "${parabolaiso_http_srv}${parabolaisobasedir}/${aitab_arch}/${aitab_img}.sfs" "/${aitab_arch}"
        fi
    done < "${_aitab_file}"

    if [[ "${checksum}" == "y" ]]; then
        _curl_get "${parabolaiso_http_srv}${parabolaisobasedir}/checksum.${arch}.md5" "/"
    fi

    mkdir -p "/run/parabolaiso/bootmnt"
    mount -o bind /run/parabolaiso/httpspace /run/parabolaiso/bootmnt

    parabolaiso_mount_handler ${newroot}
}
