#!/usr/bin/env 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.
#

# Wrapper script that runs the Spark tests then reports QA results
# to github via its API.
# Environment variables are populated by the code here:
#+ https://github.com/jenkinsci/ghprb-plugin/blob/master/src/main/java/org/jenkinsci/plugins/ghprb/GhprbTrigger.java#L139

# Go to the Spark project root directory
FWDIR="$(cd `dirname $0`/..; pwd)"
cd "$FWDIR"

source "$FWDIR/dev/run-tests-codes.sh"

COMMENTS_URL="https://api.github.com/repos/apache/spark/issues/$ghprbPullId/comments"
PULL_REQUEST_URL="https://github.com/apache/spark/pull/$ghprbPullId"

# Important Environment Variables
# ---
# $ghprbActualCommit
#+  This is the hash of the most recent commit in the PR.
#+  The merge-base of this and master is the commit from which the PR was branched.
# $sha1
#+  If the patch merges cleanly, this is a reference to the merge commit hash
#+    (e.g. "origin/pr/2606/merge").
#+  If the patch does not merge cleanly, it is equal to $ghprbActualCommit.
#+  The merge-base of this and master in the case of a clean merge is the most recent commit
#+    against master.

COMMIT_URL="https://github.com/apache/spark/commit/${ghprbActualCommit}"
# GitHub doesn't auto-link short hashes when submitted via the API, unfortunately. :(
SHORT_COMMIT_HASH="${ghprbActualCommit:0:7}"

# format: http://linux.die.net/man/1/timeout
# must be less than the timeout configured on Jenkins (currently 300m)
TESTS_TIMEOUT="250m"

# Array to capture all tests to run on the pull request. These tests are held under the
#+ dev/tests/ directory.
#
# To write a PR test:
#+  * the file must reside within the dev/tests directory
#+  * be an executable bash script
#+  * accept three arguments on the command line, the first being the Github PR long commit
#+    hash, the second the Github SHA1 hash, and the final the current PR hash
#+  * and, lastly, return string output to be included in the pr message output that will
#+    be posted to Github
PR_TESTS=(
  "pr_merge_ability"
  "pr_public_classes"
# DISABLED (pwendell) "pr_new_dependencies"
)

function post_message () {
  local message=$1
  local data="{\"body\": \"$message\"}"
  local HTTP_CODE_HEADER="HTTP Response Code: "

  echo "Attempting to post to Github..."

  local curl_output=$(
    curl `#--dump-header -` \
      --silent \
      --user x-oauth-basic:$GITHUB_OAUTH_KEY \
      --request POST \
      --data "$data" \
      --write-out "${HTTP_CODE_HEADER}%{http_code}\n" \
      --header "Content-Type: application/json" \
      "$COMMENTS_URL" #> /dev/null #| "$FWDIR/dev/jq" .id #| head -n 8
  )
  local curl_status=${PIPESTATUS[0]}

  if [ "$curl_status" -ne 0 ]; then
      echo "Failed to post message to GitHub." >&2
      echo " > curl_status: ${curl_status}" >&2
      echo " > curl_output: ${curl_output}" >&2
      echo " > data: ${data}" >&2
      # exit $curl_status
  fi

  local api_response=$(
    echo "${curl_output}" \
    | grep -v -e "^${HTTP_CODE_HEADER}"
  )

  local http_code=$(
    echo "${curl_output}" \
    | grep -e "^${HTTP_CODE_HEADER}" \
    | sed -r -e "s/^${HTTP_CODE_HEADER}//g"
  )

  if [ -n "$http_code" ] && [ "$http_code" -ne "201" ]; then
      echo " > http_code: ${http_code}." >&2
      echo " > api_response: ${api_response}" >&2
      echo " > data: ${data}" >&2
  fi

  if [ "$curl_status" -eq 0 ] && [ "$http_code" -eq "201" ]; then
    echo " > Post successful."
  fi
}

# post start message
{
  start_message="\
  [Test build ${BUILD_DISPLAY_NAME} has started](${BUILD_URL}consoleFull) for \
  PR $ghprbPullId at commit [\`${SHORT_COMMIT_HASH}\`](${COMMIT_URL})."

  post_message "$start_message"
}

# Environment variable to capture PR test output
pr_message=""
# Ensure we save off the current HEAD to revert to
current_pr_head="`git rev-parse HEAD`"

echo "HEAD:  `git rev-parse HEAD`"
echo "\$ghprbActualCommit: $ghprbActualCommit"
echo "\$sha1:  $sha1"
echo "\$ghprbPullTitle: $ghprbPullTitle"

# Run pull request tests
for t in "${PR_TESTS[@]}"; do
  this_test="${FWDIR}/dev/tests/${t}.sh"
  # Ensure the test can be found and is a file
  if [ -f "${this_test}" ]; then
    echo "Running test: $t"
    this_mssg="$(bash "${this_test}" "${ghprbActualCommit}" "${sha1}" "${current_pr_head}")"
    # Check if this is the merge test as we submit that note *before* and *after*
    # the tests run
    [ "$t" == "pr_merge_ability" ] && merge_note="${this_mssg}"
    pr_message="${pr_message}\n${this_mssg}"
    # Ensure, after each test, that we're back on the current PR
    git checkout -f "${current_pr_head}" &>/dev/null
  else
    echo "Cannot find test ${this_test}."
  fi
done

# run tests
{
  # Marks this build is a pull request build.
  export AMP_JENKINS_PRB=true
  if [[ $ghprbPullTitle == *"test-maven"* ]]; then
    export AMPLAB_JENKINS_BUILD_TOOL="maven"
  fi
  if [[ $ghprbPullTitle == *"test-hadoop1.0"* ]]; then
    export AMPLAB_JENKINS_BUILD_PROFILE="hadoop1.0"
  elif [[ $ghprbPullTitle == *"test-hadoop2.0"* ]]; then
    export AMPLAB_JENKINS_BUILD_PROFILE="hadoop2.0"
  elif [[ $ghprbPullTitle == *"test-hadoop2.2"* ]]; then
    export AMPLAB_JENKINS_BUILD_PROFILE="hadoop2.2"
  elif [[ $ghprbPullTitle == *"test-hadoop2.3"* ]]; then
    export AMPLAB_JENKINS_BUILD_PROFILE="hadoop2.3"
  fi

  timeout "${TESTS_TIMEOUT}" ./dev/run-tests
  test_result="$?"

  if [ "$test_result" -eq "124" ]; then
    fail_message="**[Test build ${BUILD_DISPLAY_NAME} timed out](${BUILD_URL}console)** \
    for PR $ghprbPullId at commit [\`${SHORT_COMMIT_HASH}\`](${COMMIT_URL}) \
    after a configured wait of \`${TESTS_TIMEOUT}\`."

    post_message "$fail_message"
    exit $test_result
  elif [ "$test_result" -eq "0" ]; then
    test_result_note=" * This patch **passes all tests**."
  else
    if [ "$test_result" -eq "$BLOCK_GENERAL" ]; then
      failing_test="some tests"
    elif [ "$test_result" -eq "$BLOCK_RAT" ]; then
      failing_test="RAT tests"
    elif [ "$test_result" -eq "$BLOCK_SCALA_STYLE" ]; then
      failing_test="Scala style tests"
    elif [ "$test_result" -eq "$BLOCK_PYTHON_STYLE" ]; then
      failing_test="Python style tests"
    elif [ "$test_result" -eq "$BLOCK_R_STYLE" ]; then
      failing_test="R style tests"
    elif [ "$test_result" -eq "$BLOCK_DOCUMENTATION" ]; then
      failing_test="to generate documentation"
    elif [ "$test_result" -eq "$BLOCK_BUILD" ]; then
      failing_test="to build"
    elif [ "$test_result" -eq "$BLOCK_MIMA" ]; then
      failing_test="MiMa tests"
    elif [ "$test_result" -eq "$BLOCK_SPARK_UNIT_TESTS" ]; then
      failing_test="Spark unit tests"
    elif [ "$test_result" -eq "$BLOCK_PYSPARK_UNIT_TESTS" ]; then
      failing_test="PySpark unit tests"
    elif [ "$test_result" -eq "$BLOCK_SPARKR_UNIT_TESTS" ]; then
      failing_test="SparkR unit tests"
    else
      failing_test="some tests"
    fi

    test_result_note=" * This patch **fails $failing_test**."
  fi
}

# post end message
{
  result_message="\
  [Test build ${BUILD_DISPLAY_NAME} has finished](${BUILD_URL}console) for \
  PR $ghprbPullId at commit [\`${SHORT_COMMIT_HASH}\`](${COMMIT_URL})."

  result_message="${result_message}\n${test_result_note}"
  result_message="${result_message}${pr_message}"

  post_message "$result_message"
}

exit $test_result