#!/usr/bin/env bash
set -euo pipefail

: "${INPUT_GIT_SERVER_URL:?missing INPUT_GIT_SERVER_URL}"
: "${INPUT_GIT_REPOSITORY:?missing INPUT_GIT_REPOSITORY}"
: "${INPUT_GIT_SHA:?missing INPUT_GIT_SHA}"
: "${INPUT_GIT_USER:?missing INPUT_GIT_USER}"
: "${INPUT_GIT_TOKEN:?missing INPUT_GIT_TOKEN}"
: "${INPUT_REGISTRY:?missing INPUT_REGISTRY}"
: "${INPUT_REGISTRY_USER:?missing INPUT_REGISTRY_USER}"
: "${INPUT_REGISTRY_TOKEN:?missing INPUT_REGISTRY_TOKEN}"
: "${INPUT_IMAGE_NAME:?missing INPUT_IMAGE_NAME}"
: "${INPUT_IMAGE_TAG:?missing INPUT_IMAGE_TAG}"
: "${INPUT_CONTEXT:?missing INPUT_CONTEXT}"
: "${INPUT_DOCKERFILE:?missing INPUT_DOCKERFILE}"


case "${INPUT_IMAGE_NAME}" in
  */*) ;;
  *)
    echo "INPUT_IMAGE_NAME must include owner/name, for example: example/testapp" >&2
    exit 1
    ;;
esac

case "${INPUT_IMAGE_NAME}" in
  *.*/*|*:*/*)
    echo "INPUT_IMAGE_NAME must not include a registry hostname; use INPUT_REGISTRY for that" >&2
    exit 1
    ;;
esac

workdir="${PWD}/repo"
sha_tag="${INPUT_GIT_SHA}"
latest_tag="latest"
local_image="localbuild:${INPUT_IMAGE_TAG}"
remote_image="${INPUT_REGISTRY}/${INPUT_IMAGE_NAME}:${INPUT_IMAGE_TAG}"
remote_image_sha="${INPUT_REGISTRY}/${INPUT_IMAGE_NAME}:${sha_tag}"
remote_image_latest="${INPUT_REGISTRY}/${INPUT_IMAGE_NAME}:${latest_tag}"
echo "${INPUT_REGISTRY_TOKEN}" | docker login "${INPUT_REGISTRY}" -u "${INPUT_REGISTRY_USER}" --password-stdin
docker tag "${local_image}" "${remote_image_sha}"
docker tag "${local_image}" "${remote_image_latest}"
docker push "${remote_image_sha}"
docker push "${remote_image_latest}"