#!/bin/bash
 ###########################################################################
# Copyright 2017-2018 IoT.bzh
#
# author: Sebastien Douheret <sebastien@iot.bzh>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
###########################################################################

. $(dirname "$0")/_env-init.sh

sdksDBFile=${1}

[ "${sdksDBFile}" = "" ] && sdksDBFile=${SDK_ROOT_DIR}/sdks_latest.json

# Restore previous file on error
exitCode=0
trap "OnExit" 0 1 2 15
OnExit ()
{
    if [ "${exitCode}" != "0" ] &&  [ -f "${sdksDBFile}.old" ]; then
        echo "Error detected, restore previous database version"
        mv "${sdksDBFile}.old" "${sdksDBFile}"
    fi
}

# Create destination directory when needed
instDir=$(dirname "${sdksDBFile}")
[ ! -d "${instDir}" ] && mkdir -p "${instDir}"

# Get database
echo "Updating AGL SDK database..."
wget --no-verbose --connect-timeout=30 "${SDK_DATABASE}" -O "${sdksDBFile}.new" || exit $?

# Backup previous file
[ -f "${sdksDBFile}" ] && cp -f "${sdksDBFile}" "${sdksDBFile}.old"

mv --update "${sdksDBFile}.new" "${sdksDBFile}"
[ -f "${sdksDBFile}.new" ] && rm -f "${sdksDBFile}.new"

echo "Done: AGL SDK database is up-to-date"