#!/usr/bin/env bash

if [ $# -lt 2 ]; then

	echo "Usage: $(basename $0) <base-image> <output-image> <build-script> [<build-script-args>]

	Build a new <output-image> on top of <base-image>, and install

	contents defined in <build-script>. <args> are directly passed

	to <build-script>.

	If <base-image> is raw, will copy it and create <output-image>

	in qcow2 format.

	If <base-image> is qcow2, will create <output-image> as a snapshot

	on top of <base-image>"

	exit 1

fi

BASEDIR=$(realpath $(dirname "$0"))

. $BASEDIR/image-init-lib.sh

# Base image to build from

BASE_IMAGE=$1 && shift

if [[ ! -e $BASE_IMAGE ]]; then

	perror_exit "Base image '$BASE_IMAGE' not found"

else

	BASE_IMAGE=$(realpath "$BASE_IMAGE")

fi

OUTPUT_IMAGE=$1 && shift

if [[ ! -d $(dirname $OUTPUT_IMAGE) ]]; then

	perror_exit "Path '$(dirname $OUTPUT_IMAGE)' doesn't exists"

fi

INST_SCRIPT=$1 && shift

create_image_from_base_image $BASE_IMAGE $OUTPUT_IMAGE.building

mount_image $OUTPUT_IMAGE.building

img_inst() {

	inst_in_image $OUTPUT_IMAGE.building $@

}

img_inst_pkg() {

	inst_pkg_in_image $OUTPUT_IMAGE.building $@

}

img_run_cmd() {

	run_in_image $OUTPUT_IMAGE.building "$@"

}

img_add_qemu_cmd() {

	QEMU_CMD+="$@"

}

[ -e "$INST_SCRIPT" ] && source $INST_SCRIPT

mv $OUTPUT_IMAGE.building $OUTPUT_IMAGE