#!/bin/bash

# Copyright (c) 2016 The CoreOS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This is a wrapper around the ebuild_aci_util.sh functions to set up the
# necessary environment, similar to the build_image script.

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

# Script must run inside the chroot
restart_in_chroot_if_needed "$@"

assert_not_root_user

# Developer-visible flags.
DEFINE_string board "${DEFAULT_BOARD}" \
  "The board to build an image for."
DEFINE_string build_dir "" \
  "Directory in which to place image result directories (named by version)"
DEFINE_boolean getbinpkg "${FLAGS_FALSE}" \
  "Download binary packages from remote repository."
DEFINE_string getbinpkgver "" \
  "Use binary packages from a specific version."

FLAGS_HELP="USAGE: build_docker_aci [flags] [docker version].
This script is used to build a CoreOS docker-skim ACI.

The version should identify an existent ebuild (i.e. app-emulation/docker-\$version).

Examples:

build_docker_aci --board=amd64-usr --build_dir=<build_dir> 1.12.6
...
"
show_help_if_requested "$@"

# The following options are advanced options, only available to those willing
# to read the source code. They are not shown in help output, since they are
# not needed for the typical developer workflow.
DEFINE_integer build_attempt 1 \
  "The build attempt for this image build."
DEFINE_string group "docker-aci" \
  "The update group (not used for actual updates here)"
DEFINE_string output_root "${DEFAULT_BUILD_ROOT}/images" \
  "Directory in which to place image result directories (named by version)"
DEFINE_string version "" \
  "Overrides version number in name to this version."

# Parse command line.
FLAGS "$@" || exit 1
[ -z "${FLAGS_ARGV}" ] && echo 'No version given' && exit 0
eval set -- "${FLAGS_ARGV}"

# Only now can we die on error.  shflags functions leak non-zero error codes,
# so will die prematurely if 'switch_to_strict_mode' is specified before now.
switch_to_strict_mode

# If downloading packages is enabled ensure the board is configured properly.
if [[ ${FLAGS_getbinpkg} -eq ${FLAGS_TRUE} ]]; then
    "${SRC_ROOT}/scripts/setup_board" --board="${FLAGS_board}" \
      --getbinpkgver="${FLAGS_getbinpkgver}" --regen_configs_only
fi

# N.B.  Ordering matters for some of the libraries below, because
# some of the files contain initialization used by later files.
. "${BUILD_LIBRARY_DIR}/toolchain_util.sh" || exit 1
. "${BUILD_LIBRARY_DIR}/board_options.sh" || exit 1
. "${BUILD_LIBRARY_DIR}/build_image_util.sh" || exit 1
. "${BUILD_LIBRARY_DIR}/prod_image_util.sh" || exit 1
. "${BUILD_LIBRARY_DIR}/test_image_content.sh" || exit 1
. "${BUILD_LIBRARY_DIR}/ebuild_aci_util.sh" || exit 1

BUILD_DIR=${FLAGS_build_dir:-$BUILD_DIR}

# TODO: this should be per-version; not all docker versions have the same binaries
packaged_files=( 
  "/usr/bin/docker"
  "/usr/bin/dockerd"
  "/usr/bin/docker-containerd"
  "/usr/bin/docker-containerd-shim"
  "/usr/bin/docker-proxy"
  "/usr/bin/docker-runc"
  "/usr/lib/coreos/dockerd"
)

for version; do
    ebuild_aci_create "users.developer.core-os.net/skim/docker" "coreos_docker-${version}-${BOARD}" "app-emulation/docker" "${version}" "${packaged_files[@]}"
done