#!/bin/bash

# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

SCRIPT_ROOT=$(readlink -f $(dirname "$0")/..)
. "${SCRIPT_ROOT}/common.sh" || exit 1
. "${BUILD_LIBRARY_DIR}/vm_image_util.sh" || exit 1

# We're invoked only by build_image, which runs in the chroot
assert_inside_chroot

# Die on any errors
switch_to_strict_mode

# all of this is amd64 only right now
BOARD="amd64-usr"

oem_uses() {
  local vm oem="$1"
  for vm in "${VALID_IMG_TYPES[@]}"; do
    local oem_var="IMG_${vm}_OEM_PACKAGE"
    local use_var="IMG_${vm}_OEM_USE"
    if [[ "${!oem_var}" == "${oem}" && -n "${!use_var}" ]]; then
      echo "${!use_var}"
    fi
  done | sort -u
}

for oem in "${VALID_OEM_PACKAGES[@]/#/oem-}"; do
  uses=( $(oem_uses "${oem}") )
  if [[ ${#uses} -eq 0 ]]; then
    uses=( "" )
  fi

  for use in "${uses[@]}"; do
    info "Checking ${oem}${use:+[${use}]}"
    USE="${use}" emerge-${BOARD} --usepkg --getbinpkg \
        --emptytree --pretend --verbose "coreos-base/${oem}"
  done
done