# Exit early if we don't want to build the image
if [[ "${BUILD_ASSETS_IMAGE}" != "true" ]]
then
  exit 0
fi

# Generate the image name based on the project this is being run in
ASSETS_IMAGE_NAME="gitlab-assets-ce"
# `dev.gitlab-org` still has gitlab-ee.
if [[ "${CI_PROJECT_NAME}" == "gitlab" ]] || [[ "${CI_PROJECT_NAME}" == "gitlab-ee" ]]
then
  ASSETS_IMAGE_NAME="gitlab-assets-ee"
fi

ASSETS_IMAGE_PATH=${CI_REGISTRY}/${CI_PROJECT_PATH}/${ASSETS_IMAGE_NAME}

mkdir -p assets_container.build/public
cp -r public/assets assets_container.build/public/
cp Dockerfile.assets assets_container.build/

COMMIT_REF_SLUG_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_REF_SLUG}
# Use CI_MERGE_REQUEST_SOURCE_BRANCH_SHA (MR HEAD commit) so that the image is in sync with Omnibus/CNG images.
# Background: Due to the fact that we cannot retrieve the Merged Commit in the downstream omnibus/CNG pipelines,
# we're building the Omnibus/CNG images for the MR HEAD commit.
# In turn, the assets image also needs to be built from the MR HEAD commit, so that everything is build from the same commit.
# For non-MR commits, we fallback to $CI_COMMIT_SHA.
COMMIT_SHA_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_MERGE_REQUEST_SOURCE_BRANCH_SHA:-$CI_COMMIT_SHA}
COMMIT_REF_NAME_DESTINATION=${ASSETS_IMAGE_PATH}:${CI_COMMIT_REF_NAME}

DESTINATIONS="--destination=$COMMIT_REF_SLUG_DESTINATION --destination=$COMMIT_SHA_DESTINATION"

# Also tag the image with GitLab version, if running on a tag pipeline, so
# other projects can simply use that instead of computing the slug.
if [ -n "$CI_COMMIT_TAG" ]; then
  DESTINATIONS="$DESTINATIONS --destination=$COMMIT_REF_NAME_DESTINATION"
fi

echo "building assets image for destinations: $DESTINATIONS"

/kaniko/executor --context=assets_container.build --dockerfile=assets_container.build/Dockerfile.assets $DESTINATIONS