#!/bin/bash

# Copyright 2017 Istio Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

if BUILD_GIT_REVISION=$(git rev-parse HEAD 2> /dev/null); then
    if ! git diff-index --quiet HEAD; then
        BUILD_GIT_REVISION=${BUILD_GIT_REVISION}"-dirty"
    fi
else
    BUILD_GIT_REVISION=unknown
fi

# Check for local changes
if git diff-index --quiet HEAD --; then
  tree_status="Clean"
else
  tree_status="Modified"
fi

# security wanted VERSION='unknown'
VERSION="${BUILD_GIT_REVISION}"
if [[ -n ${ISTIO_VERSION} ]]; then
  VERSION="${ISTIO_VERSION}"
fi

DOCKER_HUB="docker.io/istio"
if [[ -n ${ISTIO_DOCKER_HUB} ]]; then
  DOCKER_HUB="${ISTIO_DOCKER_HUB}"
fi

GIT_DESCRIBE_TAG=$(git describe --tags)

# used by bin/gobuild.sh
if [ "${GO111MODULE}" == "on" ]; then
  echo "istio.io/pkg/version.buildVersion=${VERSION}"
  echo "istio.io/pkg/version.buildGitRevision=${BUILD_GIT_REVISION}"
  echo "istio.io/pkg/version.buildUser=$(whoami)"
  echo "istio.io/pkg/version.buildHost=$(hostname -f)"
  echo "istio.io/pkg/version.buildDockerHub=${DOCKER_HUB}"
  echo "istio.io/pkg/version.buildStatus=${tree_status}"
  echo "istio.io/pkg/version.buildTag=${GIT_DESCRIBE_TAG}"
else
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildVersion=${VERSION}"
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildGitRevision=${BUILD_GIT_REVISION}"
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildUser=$(whoami)"
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildHost=$(hostname -f)"
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildDockerHub=${DOCKER_HUB}"
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildStatus=${tree_status}"
  echo "istio.io/istio/vendor/istio.io/pkg/version.buildTag=${GIT_DESCRIBE_TAG}"
fi
