#!/bin/bash -eux

. config/functions

ARCH="${ARCH:-}"
SUBPROJECT="${SUBPROJECT:-}"

# We want to start off imagecraft builds with just amd64 support right now
case $ARCH in
  amd64)
    ;;
  *)
    echo "imagecraft build is currently not implemented for ARCH=${ARCH:-unset}."
    exit 0
    ;;
esac

case ${SUBPROJECT} in
  minimized)
    ;;
  *)
    echo "imagecraft build is currently not implemented for SUBPROJECT=${SUBPROJECT:-unset}."
    exit 0
    ;;
esac

_src_d=$(dirname $(readlink -f ${0}))

snap install imagecraft --classic --channel latest/edge

cp -r "$_src_d"/imagecraft-configs/* .

CRAFT_BUILD_ENVIRONMENT=host imagecraft --verbosity debug pack

# We are using this function instead of mount_disk_image from functions
# because imagecraft doesn't currently support XBOOTLDR's GUID and
# mount_disk_image has an explicit check for the XBOOTLDR GUID
# TODO: Use mount_disk_image once imagecraft supports XBOOTLDR's GUID
mount_image_partitions() {
  mount_image "${disk_image}" "$ROOT_PARTITION"

  # Making sure that the loop device is ready
  partprobe "${loop_device}"
  udevadm settle
  mount_partition "${rootfs_dev_mapper}" "$mountpoint"
  mount "${loop_device}p13" "$mountpoint/boot"
  mount "${loop_device}p15" "$mountpoint/boot/efi"
}

install_grub_on_image() {
  divert_grub "$mountpoint"
  chroot "$mountpoint" grub-install --target=i386-pc "${loop_device}"
  chroot "$mountpoint" update-grub
  undivert_grub "$mountpoint"

  echo "GRUB for BIOS boot installed successfully."
}

unmount_image_partitions() {
  umount "$mountpoint/boot/efi"
  umount "$mountpoint/boot"

  umount_partition "$mountpoint"
  rmdir "$mountpoint"
}

disk_image="pc.img"
ROOT_PARTITION=1
mountpoint=$(mktemp -d)

mount_image_partitions

install_grub_on_image
create_manifest  "$mountpoint/" "$PWD/livecd.ubuntu-cpc.imagecraft.manifest" "$PWD/livecd.ubuntu-cpc.imagecraft.spdx"  "cloud-image-$ARCH-$(date +%Y%m%dT%H:%M:%S)" "false"

unmount_image_partitions

clean_loops
trap - EXIT

qemu-img convert -f raw -O qcow2 "${disk_image}" livecd.ubuntu-cpc.imagecraft.img