#!/bin/bash

# Copyright (c) 2014 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.

SCRIPT_ROOT=$(dirname $(readlink -f "$0"))
# We have to simple-mindedly set GCLIENT_ROOT in case we're running from
# au-generator.zip because common.sh will fail while auto-detect it.
export GCLIENT_ROOT=$(readlink -f "${SCRIPT_ROOT}/../../")
. "${SCRIPT_ROOT}/common.sh" || exit 1

DEFINE_string board "amd64-usr" \
    "Board type of the image"
DEFINE_string version "${COREOS_VERSION_STRING}" \
    "Version number to promote."
DEFINE_string channel "alpha" \
    "Roller channel to promote this version to."
DEFINE_string app_id "e96281a6-d1af-4bde-9a0a-97b76e56dc57" \
    "CoreOS AppId in roller."

DEFINE_string user "" \
    "User for roller."
DEFINE_string api_key "" \
    "API key for roller."
DEFINE_string endpoint "https://public.update.core-os.net" \
    "Roller endpoint to update."
DEFINE_string build_storage "gs://builds.release.core-os.net" \
    "GS bucket with official build artifacts."
DEFINE_string release_storage "" \
    "GS bucket for release downloads."

# Allow toggling the assorted actions.
DEFINE_boolean do_roller ${FLAGS_TRUE} "Update the channel in roller"
DEFINE_boolean do_gce ${FLAGS_TRUE} "Add image to coreos-cloud GCE project"
DEFINE_boolean do_storage ${FLAGS_TRUE} "Copy images to public storage"

FLAGS_HELPS="usage: $SCRIPTNAME [flags]

Setting everything up for use\n

1) Run 'gsutil config'
2) Run 'gcutil config'
3) Ensure rollerctl is installed in your path\n
"

# Parse flags
FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"
switch_to_strict_mode

if [[ ${FLAGS_do_roller} -eq ${FLAGS_TRUE} ]]; then
    [[ -z "${FLAGS_api_key}" ]] && die "--api_key is required"
    [[ -z "${FLAGS_user}" ]] && die "--user is required"
fi

# Ensure GS URL doesn't have a trailing /
FLAGS_build_storage="${FLAGS_build_storage%%/}"
FLAGS_release_storage="${FLAGS_release_storage%%/}"

# The channel name in roller is capitalized, everywhere else is lower case.
roller_channel="${FLAGS_channel^}"
lower_channel="${FLAGS_channel,,}"

# Full GS URL of the original build
gs_build="${FLAGS_build_storage}/${lower_channel}/boards/${FLAGS_board}/${FLAGS_version}"

if [[ -z "${FLAGS_release_storage}" ]]; then
    FLAGS_release_storage="gs://${lower_channel}.release.core-os.net"
fi
# Full GS URL of the public release locations
gs_release="${FLAGS_release_storage}/${FLAGS_board}/${FLAGS_version}"
gs_current="${FLAGS_release_storage}/${FLAGS_board}/current"

if [[ ${FLAGS_do_roller} -eq ${FLAGS_TRUE} ]]; then
    rollerctl \
        -s ${FLAGS_endpoint} \
        -u ${FLAGS_user} \
        -k ${FLAGS_api_key} \
        update-channel \
        "${FLAGS_app_id}" \
        "${roller_channel}" \
        "${FLAGS_version}"
fi

if [[ ${FLAGS_do_storage} -eq ${FLAGS_TRUE} ]]; then
    gsutil -m cp "${gs_build}/*" "${gs_release}/"
fi

if [[ ${FLAGS_do_gce} -eq ${FLAGS_TRUE} ]]; then
    gce_name="coreos-${lower_channel}-${FLAGS_version//./-}-v$(date -u +%Y%m%d)"
    gce_desc="CoreOS ${lower_channel} ${FLAGS_version}"
    gcutil \
        --project coreos-cloud \
        addimage \
        --description="${gce_desc}" \
        "${gce_name}" \
        "${gs_build}/coreos_production_gce.tar.gz"
    gce_path="projects/coreos-cloud/global/images/${gce_name}"
    gce_temp=$(mktemp --suffix=.txt)
    trap "rm -f '${gce_temp}'" EXIT
    echo "${gce_path}" > "${gce_temp}"
    gsutil cp "${gce_temp}" "${gs_release}/coreos_production_gce.txt"
    rm -f "${gce_temp}"
    trap - EXIT
fi

if [[ ${FLAGS_do_storage} -eq ${FLAGS_TRUE} ]]; then
    gsutil -m cp "${gs_release}/*" "${gs_current}/"
fi