#!/bin/bash

set -ex

trap cleanup_exit INT TERM EXIT

cleanup_exit()
{
    rm -rf ${HOME}/.docker
    rm -f ${WORKSPACE}/{log,config.json,version.txt}
}

docker_log_in()
{
    mkdir -p ${HOME}/.docker
    cat > ${HOME}/.docker/config.json << EOF
{
        "auths": {
                "https://index.docker.io/v1/": {
                        "auth": "${DOCKER_AUTH}"
                }
        }
}
EOF
    chmod 0600 ${HOME}/.docker/config.json
}
export AWS_DEFAULT_REGION=eu-west-1
update_images=$(find -type f -name .docker-tag)
docker_log_in
for imagename in ${update_images}; do
  (
    docker_tag=$(cat $imagename)
    if [ x"${GERRIT_BRANCH}" != x"master" ]; then
      new_tag=${docker_tag}-${GERRIT_BRANCH}
      docker tag ${docker_tag} ${new_tag}
      docker_tag=${new_tag}
    fi

    for i in 30 60 120;
    do
        # The following code pushes docker images to both DockerHub and PRIVATE_CONTAINER_REGISTRY
        # PRIVATE_CONTAINER_REGISTRY is used to overcome the DockerHub rate limiting
        mirror_tag=${PRIVATE_CONTAINER_REGISTRY}/${docker_tag}
        docker tag ${docker_tag} ${mirror_tag}
        aws ecr get-login-password | docker login --username AWS --password-stdin ${PRIVATE_CONTAINER_REGISTRY}
        REPO_NAME=$(echo "$docker_tag" | cut -d: -f1)
        # create if repository not already present in PRIVATE_CONTAINER_REGISTRY
        aws ecr describe-repositories --repository-names ${REPO_NAME} || aws ecr create-repository --repository-name ${REPO_NAME}
        docker push ${docker_tag} && docker push ${mirror_tag} && exit 0 || true
        sleep $i
        docker_log_in
    done
    exit 1
  )||echo $imagename push failed >> ${WORKSPACE}/log
done

if [ -e ${WORKSPACE}/log ]
then
    echo "some images failed:"
    cat ${WORKSPACE}/log
    exit 1
fi