#!/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=${TAG:-${OS_DISTRO}-${PACKAGE_STREAM}-$(date +%Y%m%d)}
} || {
  TAG=${TAG:-${OS_DISTRO}-${PACKAGE_STREAM}-${RELEASE_INFO}}
}

[[ "${TARGET_TAG}" != "" ]] || {
  echo >&2 "TARGET_TAG needs to be set to the tag to push to Harbor"
  exit 1
}

function fail {
  >&2 echo "$*"
  exit -1
}

cat << EOF

The following will publish latest rolling image:

1. Pull ${CONTAINER}:${TAG}
2. Tag #1 as ${CONTAINER}:${TARGET_TAG}
3. Tag #1 as ${CONTAINER}:latest-${TARGET_TAG}
4. Delete ${CONTAINER}:${TAG}
5. Push #2
6. Push #3

EOF

docker pull ${REGISTRY_URL}/${CONTAINER}:${TAG} ||
  fail "Unable to pull image"

docker tag ${REGISTRY_URL}/${CONTAINER}:${TAG} \
  ${REGISTRY_URL}/${CONTAINER}:${TARGET_TAG} ||
  fail "Unable to tag image (1/2)"

docker tag ${REGISTRY_URL}/${CONTAINER}:${TAG} \
  ${REGISTRY_URL}/${CONTAINER}:latest-${TARGET_TAG} ||
  fail "Unable to tag image (2/2)"

# Parse out the FQDN from the REGISTRY_URL and escape
# the group/project/path
FQDN=${REGISTRY_URL%%/*}
PROJECT=$(echo ${REGISTRY_URL#*/}/${CONTAINER} | sed s,/,%2F,g)

echo -e "Deleting tag:\n  ${CONTAINER}:${TAG}\nFrom:\n  ${PROJECT}"

HEADER="Authorization:Basic $(echo -n "${HARBOR_USER}:${HARBOR_PASSWD}" | base64)"

RESULTS=$(curl --noproxy '*' -s -k \
  -i \
  -X DELETE \
  -H "${HEADER}" \
  -H "accept: application/json" \
  "https://${FQDN}/api/repositories/${PROJECT}/tags/${TAG}")

echo ${RESULTS} | grep -q "HTTP.*200" && {
  echo "Tag deleted successfully."
} || {
  >&2 echo "Error deleting tag:"
  >&2 echo "${RESULTS}"
  exit 1
}

docker push ${REGISTRY_URL}/${CONTAINER}:${TARGET_TAG} ||
  fail "Unable to push ${CONTAINER}:${TARGET_TAG}"

docker push ${REGISTRY_URL}/${CONTAINER}:latest-${TARGET_TAG} ||
  fail "Unable to push ${CONTAINER}:latest-${TARGET_TAG}"

echo "Done tagging and pushing ${CONTAINER} as ${TARGET_TAG}"