#!/bin/bash
#
#    Licensed to the Apache Software Foundation (ASF) under one or more
#    contributor license agreements.  See the NOTICE file distributed with
#    this work for additional information regarding copyright ownership.
#    The ASF licenses this file to You 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.
#

# This script helps to verify full life cycle of Gradle build and all
# PostCommit tests against release branch on Jenkins.
#
# It reads configurations from script.config, setup environment and finally
# create a test PR to run Jenkins jobs.
#
# NOTE:
#   1. Please create a personal access token from your Github account first.
#      Instructions: https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line
#   2. Please set RELEASE_BUILD_CONFIGS in script.config before running this
#      script.
#   3. Please manually comment trigger phrases to created PR to start Gradle
#      release build and all PostCommit jobs. Phrases are listed in
#      JOB_TRIGGER_PHRASES below.


. script.config

set -e

BEAM_REPO_URL=https://github.com/apache/beam.git
RELEASE_BRANCH=release-${RELEASE_VER}
WORKING_BRANCH=postcommit_validation_pr

JOB_TRIGGER_PHRASES=(
  # To verify Gradle release build
  "**Run Release Gradle Build**"
  # To run all PostCommit jobs
  "Run Go PostCommit"
  "Run Java PostCommit"
  "Run Java PostCommit"
  "Run Java PortabilityApi PostCommit"
  "Run Java Flink PortableValidatesRunner Batch"
  "Run Java Flink PortableValidatesRunner Streaming"
  "Run Apex ValidatesRunner"
  "Run Dataflow ValidatesRunner"
  "Run Flink ValidatesRunner"
  "Run Gearpump ValidatesRunner"
  "Run Dataflow PortabilityApi ValidatesRunner"
  "Run Samza ValidatesRunner"
  "Run Spark ValidatesRunner"
  "Run Python Dataflow ValidatesContainer"
  "Run Python Dataflow ValidatesRunner"
  "Run Python Flink ValidatesRunner"
  "Run Python PostCommit"
  "Run SQL PostCommit"
  "Run Go PreCommit"
  "Run Java PreCommit"
  "Run Java_Examples_Dataflow PreCommit"
  "Run JavaPortabilityApi PreCommit"
  "Run Portable_Python PreCommit"
  "Run Python PreCommit"
)


function clean_up(){
  echo ""
  echo "==================== Final Cleanup ===================="
  rm -rf ${LOCAL_BEAM_DIR}
  echo "* Deleted workspace ${LOCAL_BEAM_DIR}"
}
trap clean_up EXIT


echo ""
echo "==================== 1 Checking Environment Variables ================="
echo "* PLEASE update RELEASE_BUILD_CONFIGS in file script.config first *"
echo ""
echo "Verify release build against branch: ${RELEASE_BRANCH}."
echo "Use workspace: ${LOCAL_BEAM_DIR}"
echo ""
echo "All environment and workflow configurations from RELEASE_BUILD_CONFIGS:"
for i in "${RELEASE_BUILD_CONFIGS[@]}"; do
  echo "$i = ${!i}"
done
echo "[Confirmation Required] Are they all provided and correctly set? [y|N]"
read confirmation
if [[ $confirmation != "y" ]]; then
  echo "Please rerun this script and make sure you have the right configurations."
  exit
fi


echo ""
echo "==================== 2 Checking Requirements ======================="

echo "====================== 2.1 Checking git ========================"
if [[ -z ${GITHUB_TOKEN} ]]; then
  echo "Error: A Github personal access token is required to perform git push "
  echo "under a newly cloned directory. Please manually create one from Github "
  echo "website with guide:"
  echo "https://help.github.com/en/articles/creating-a-personal-access-token-for-the-command-line"
  echo "Note: This token can be reused in other release scripts."
  exit
else
  echo "====================== Cloning repo ======================"
  git clone ${BEAM_REPO_URL} ${LOCAL_BEAM_DIR}
  cd ${LOCAL_BEAM_DIR}
  # Set upstream repo url with access token included.
  USER_REPO_URL=https://${GITHUB_USERNAME}:${GITHUB_TOKEN}@github.com/${GITHUB_USERNAME}/beam.git
  git remote add ${GITHUB_USERNAME} ${USER_REPO_URL}
  # For hub access Github API.
  export GITHUB_TOKEN=${GITHUB_TOKEN}
  # For local git repo only. Required if global configs are not set.
  git config user.name "${GITHUB_USERNAME}"
  git config user.email "${GITHUB_USERNAME}@gmail.com"
fi

echo "====================== 2.2 Checking hub ========================"
HUB_VERSION=2.12.0
HUB_ARTIFACTS_NAME=hub-linux-amd64-${HUB_VERSION}
if [[ -z `which hub` ]]; then
  echo "There is no hub installed on your machine."
  if [[ "${INSTALL_HUB}" = true  ]]; then
    echo "====================== Installing hub ======================="
    wget https://github.com/github/hub/releases/download/v${HUB_VERSION}/${HUB_ARTIFACTS_NAME}.tgz
    tar zvxvf ${HUB_ARTIFACTS_NAME}.tgz
    sudo ./${HUB_ARTIFACTS_NAME}/install
    echo "eval "$(hub alias -s)"" >> ~/.bashrc
    rm -rf ${HUB_ARTIFACTS_NAME}*
  else
    echo "Refused to install hub. Cannot proceed into next setp."; exit
  fi
fi
hub version


echo ""
echo "==================== 3 Run Gradle Release Build & PostCommit Tests on Jenkins ==================="
echo "[Current Task] Run Gradle release build and all PostCommit Tests against Release Branch on Jenkins."
echo "This task will create a PR against apache/beam."
echo "After PR created, you need to comment phrases listed in description in the created PR:"

if [[ ! -z `which hub` ]]; then
  git checkout -b ${WORKING_BRANCH} origin/${RELEASE_BRANCH} --quiet
  touch empty_file.txt
  git add .
  git commit -m "Add empty file in order to create a test PR" --quiet
  git push -f ${GITHUB_USERNAME} --quiet

  trigger_phrases=$(IFS=$'\n'; echo "${JOB_TRIGGER_PHRASES[*]}")
  hub pull-request -b apache:${RELEASE_BRANCH} -h ${GITHUB_USERNAME}:${WORKING_BRANCH} -F- <<<"[DO NOT MERGE] Run all PostCommit and PreCommit Tests against Release Branch

  Please comment as instructions below, one phrase per comment:

  ${trigger_phrases}"

  echo ""
  echo "[NOTE]: Please make sure all test targets have been invoked."
  echo "Please check the test results. If there is any failure, follow the policy in release guide."
fi
