#!/bin/bash

# Bring in the variables from SOLUTION file, supporting
# nested substitution
. SOLUTION

VARS=($(sed -nE "s,(^[^#][^=]*).*$,\1,pg" SOLUTION))
for var in ${VARS[@]}; do
  export ${var}
done

RELEASE_INFO=${RELEASE_INFO:-N/A}
[[ "${RELEASE_INFO}" == "N/A" ]] && {
  TAG=${TAG:-test-build-${OS_DISTRO}-${PACKAGE_STREAM}-$(date +%Y%m%d)}
} || {
  TAG=${TAG:-test-${OS_DISTRO}-${PACKAGE_STREAM}-${RELEASE_INFO}}
}

if ! docker tag ${CONTAINER}:${TAG} ${REGISTRY_URL}/${CONTAINER}:${TAG}; then
  fail "Unable to tag .../${CONTAINER}:${TAG}"
fi

iter=5
while (( iter )); do
  echo "Pushing as .../${CONTAINER}:${TAG}"
  if docker push ${REGISTRY_URL}/${CONTAINER}:${TAG}; then
    break
  fi
  echo "Unable to tag and push image to ${REGISTRY_URL}."
  iter=$((iter-1))
  if (( ! iter )); then
    fail "No more tries."
  fi
  echo "Waiting 10s before trying again..."
  sleep 10
done

[[ "${TAG}" =~ "test-*" ]] && {
  cat << EOM

This image was pushed with the 'test-' tag prefix:

  ${REGISTRY_URL}/${CONTAINER}:${TAG}

If the image looks good, you can promote this build:

1. Tag the tree it as ${TAG}

  git commit -s -a -m "Build of ${TAG/test-}"
  git tag -f ${TAG/test-}

2. Remove the 'test-' prefix from the tag:

  docker tag ${CONTAINER}:${TAG/test-} ${REGISTRY_URL}/${CONTAINER}:${TAG/test-}
  docker push ${REGISTRY_URL}/${CONTAINER}:${TAG/test-}

3. Roll this version to the 'latest':

  docker tag ${CONTAINER}:${TAG/test-} ${REGISTRY_URL}/${CONTAINER}:latest-${OS_DISTRO}-${PACKAGE_STREAM}
  docker push ${REGISTRY_URL}/${CONTAINER}:latest-${OS_DISTRO}-${PACKAGE_STREAM}

EOM
} || {
  cat << EOM

This image was pushed:

  ${REGISTRY_URL}/${CONTAINER}:${TAG}

EOM
}