# shellcheck shell=bash
export UPDATER_CORE_IMAGE="ghcr.io/dependabot/dependabot-updater-core"
export UPDATER_IMAGE="ghcr.io/dependabot/dependabot-updater-"
export DOCKER_BUILDKIT=1

function set_tag() {
    case $ECOSYSTEM in
      docker_compose)
        TAG=docker-compose
        ;;
      dotnet_sdk)
        TAG=dotnet-sdk
        ;;
      go_modules)
        TAG=gomod
        ;;
      hex)
        TAG=mix
        ;;
      npm_and_yarn)
        TAG=npm
        ;;
      python)
        TAG=pip
        ;;
      git_submodules)
        TAG=gitsubmodule
        ;;
      github_actions)
        TAG=github-actions
        ;;
      rust_toolchain)
        TAG=rust-toolchain
        ;;
      *)
        TAG=$ECOSYSTEM
        ;;
    esac
}

function docker_build() {
  [[ -n "$SKIP_BUILD" ]] && return
  ECOSYSTEM="$1"
  set_tag

  if [ -z "$DEPENDABOT_USER_UID" ]; then
    export DEPENDABOT_USER_UID=1000
  fi
  if [ -z "$DEPENDABOT_USER_GID" ]; then
    export DEPENDABOT_USER_GID=1000
  fi

  # Only check Docker Content Trust for the updater-core image
  # shellcheck disable=SC2034 # Used implicitly in docker build
  DOCKER_CONTENT_TRUST=1

  # shellcheck disable=SC2086  # as $DOCKER_BUILD_ARGS relies on word-splitting
  docker build \
    $DOCKER_BUILD_ARGS \
    --build-arg BUILDKIT_INLINE_CACHE=1 \
    --build-arg USER_UID=$DEPENDABOT_USER_UID \
    --build-arg USER_GID=$DEPENDABOT_USER_GID \
    --build-arg DEPENDABOT_UPDATER_VERSION=$DEPENDABOT_UPDATER_VERSION \
    --cache-from "$UPDATER_CORE_IMAGE" \
    -t "$UPDATER_CORE_IMAGE" \
    -f Dockerfile.updater-core \
    .

  # We don't sign the updater image with Notary, so disable Docker Content Trust for remaining builds
  unset DOCKER_CONTENT_TRUST

  export UPDATER_IMAGE_NAME="$UPDATER_IMAGE$TAG"

  # shellcheck disable=SC2086  # as $DOCKER_BUILD_ARGS relies on word-splitting
  docker build \
    $DOCKER_BUILD_ARGS \
    --build-arg BUILDKIT_INLINE_CACHE=1 \
    --cache-from "$UPDATER_IMAGE_NAME" \
    -t "$UPDATER_IMAGE_NAME" \
    -f $ECOSYSTEM/Dockerfile \
    .

  # Verify max layers; an AUFS limit that was _crucial_ on Heroku (but not now)
  IMAGE_LAYERS=$(docker history -q "$UPDATER_IMAGE_NAME" | wc -l | sed -e 's/ //g')
  echo "$UPDATER_IMAGE_NAME contains $IMAGE_LAYERS layers"
  [[ $IMAGE_LAYERS -lt 126 ]]
}

function docker_exec() {
  docker_build "$1"
  docker run --env DEPENDABOT_TEST_ACCESS_TOKEN \
  --rm \
  -v "$(pwd)/.:/home/dependabot/dependabot-updater:delegated" \
  -ti "$UPDATER_IMAGE$TAG" "${@:2}"
}

function docker_bundle_exec() {
  docker_build "$1"

  docker run --env DEPENDABOT_TEST_ACCESS_TOKEN \
  --env VCR \
  --rm \
  -v "$(pwd)/updater/spec/fixtures/vcr_cassettes:/home/dependabot/dependabot-updater/spec/fixtures/vcr_cassettes" \
  "$UPDATER_IMAGE$TAG" bundle exec "${@:2}"
}