#!/usr/bin/env bash

: ${CONTINUOUS_INTEGRATION=}

progressFlag=""
if [ "$CONTINUOUS_INTEGRATION" == "true" ]; then progressFlag="--progress=plain"; fi

case ${1:-} in
'')
  . $(dirname $0)/util
  gogo_version=$(awk '$1 == "github.com/gogo/protobuf" { print $2 }' go.mod)
  case $buildmode in
  "buildkit")
    buildctl build $progressFlag --frontend=dockerfile.v0 --local context=. --local dockerfile=. --opt build-arg:GOGO_VERSION=$gogo_version --opt target=validate --opt filename=./hack/dockerfiles/generated-files.Dockerfile
    ;;
  "docker-buildkit")
    export DOCKER_BUILDKIT=1
    iidfile=$(mktemp -t docker-iidfile.XXXXXXXXXX)
    docker build --iidfile $iidfile --build-arg GOGO_VERSION=$gogo_version -f ./hack/dockerfiles/generated-files.Dockerfile --target validate --force-rm . || exit 1
    iid=$(cat $iidfile)
    docker rmi $iid
    rm -f $iidfile
    ;;
  *)
    echo "Unsupported build mode: $buildmode" >&2
    exit 1
    ;;
  esac
  ;;
check)
  diffs="$(git status --porcelain -- **/*.pb.go 2>/dev/null)"
  set +x
  if [ "$diffs" ] ; then
      {
        echo 'The result of "go generate" differs'
        echo
        echo "$diffs"
        echo
        echo 'Please update with "make generated-files"'
        echo
      } >&2
      exit 1
  fi
  echo 'Congratulations! All auto generated files are correct.'
  ;;
esac