#   COPYRIGHT NOTICE STARTS HERE
#
#   Copyright 2018-2019 © Samsung Electronics Co., Ltd.
#
#   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.
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#   COPYRIGHT NOTICE ENDS HERE

usage () {
    echo "Usage:"
    echo -e "./$(basename $0) [destination directory]\n"
    echo "Examples:"
    echo "  ./$(basename $0) ./downloads"
}

if [ "${1}" == "-h" ] || [ -z "${1}" ] ; then
    usage
    exit 1
else
    OUTDIR="${1}"
fi

# we are keeping just dublin support in dublin branch
KUBECTL_VERSION=${KUBECTL_VERSION:-1.13.5}
HELM_VERSION=${HELM_VERSION:-2.12.3}
RKE_VERSION=${RKE_VERSION:-0.2.1}

mkdir -p "$OUTDIR"
cd "$OUTDIR"

download() {
    url="$1"
    url_file="${url%%\?*}"
    file=$(basename "$url_file")
    echo "Downloading $url"
    curl -s --retry 5 -y 10 -Y 10 --location  "$url" -o "$file"
}

download "https://storage.googleapis.com/kubernetes-release/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl"

download "https://storage.googleapis.com/kubernetes-helm/helm-v${HELM_VERSION}-linux-amd64.tar.gz"
tar -xf ./helm-v${HELM_VERSION}-linux-amd64.tar.gz linux-amd64/helm -O > helm
rm -f ./helm-v${HELM_VERSION}-linux-amd64.tar.gz

download "https://github.com/rancher/rke/releases/download/v${RKE_VERSION}/rke_linux-amd64"
mv rke_linux-amd64 rke

chmod a+x ./helm ./kubectl ./rke

exit 0