#!/bin/bash

RUNREVPARSE=false
if [ "$CIRCLECI" == "true" ]; then
  if [[ ! -z $CIRCLE_PULL_REQUEST ]] ; then
    CIRCLE_PR_NUMBER="${CIRCLE_PR_NUMBER:-${CIRCLE_PULL_REQUEST##*/}}"
    REPO=$CIRCLE_PULL_REQUEST
    REPO=${REPO##https://github.com/}
    REPO=${REPO%%/pull/$CIRCLE_PR_NUMBER}
  else
    REPO=$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME
  fi
  BRANCH=${CIRCLE_BRANCH:-$CIRCLE_TAG}
  PR_NUMBER=${CIRCLE_PR_NUMBER:-false}
  BUILD_NUMBER=$CIRCLE_BUILD_NUM
  GIT_COMMIT=$CIRCLE_SHA1
  RUNREVPARSE=true
elif [[ -n $BUILD_NUMBER ]]; then
  echo "CHANGE_ID=$CHANGE_ID"
  echo "CHANGE_URL=$CHANGE_URL"
  REPO=${CHANGE_URL##https://github.com/}
  if [[ ! -z $CHANGE_ID ]] ; then
    REPO=${REPO%%/pull/$CHANGE_ID}
  fi
  PR_NUMBER=${CHANGE_ID:-false}
  BRANCH=$BRANCH_NAME
fi

echo "REPO=$REPO"
echo "BRANCH=$BRANCH"
echo "PR_NUMBER=$PR_NUMBER"
echo "BUILD_NUMBER=$BUILD_NUMBER"
echo "GIT_COMMIT=$GIT_COMMIT"

set -euo pipefail

REPOSITORY_OWNER=monicahq/laravel-cloudflare
SONAR_ORGANIZATION=monicahq

function installSonar {
  echo '== Setup sonar scanner'

  # set version of sonar scanner to use :
  sonarversion=${SONAR_VERSION:-}
  if [ -z "${sonarversion:-}" ]; then
    sonarversion=3.2.0.1227
  fi
  echo "== Using sonarscanner $sonarversion"

  mkdir -p $HOME/sonarscanner
  pushd $HOME/sonarscanner > /dev/null
  if [ ! -d "sonar-scanner-$sonarversion" ]; then
    echo "== Downloading sonarscanner $sonarversion"
    java_path=$(which java || true)
    if [ -x "$java_path" ]; then
      wget --quiet --continue https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-$sonarversion.zip
      unzip -q sonar-scanner-cli-$sonarversion.zip
      rm sonar-scanner-cli-$sonarversion.zip
    else
      wget --quiet --continue https://binaries.sonarsource.com/Distribution/sonar-scanner-cli/sonar-scanner-cli-$sonarversion-linux.zip
      unzip -q sonar-scanner-cli-$sonarversion-linux.zip
      rm sonar-scanner-cli-$sonarversion-linux.zip
      mv sonar-scanner-$sonarversion-linux sonar-scanner-$sonarversion
    fi
  fi
  export SONAR_SCANNER_HOME=$HOME/sonarscanner/sonar-scanner-$sonarversion
  export PATH=$SONAR_SCANNER_HOME/bin:$PATH
  popd > /dev/null
}

function CommonParams {
  extra=""
  if [ "$REPO" != "$REPOSITORY_OWNER" ]; then
    # Avoid forks to send reports to the same project
    project="${REPO/\//_}"
    extra="$extra -Dsonar.projectKey=monicahq_laravel-cloudflare:$project -Dsonar.projectName=$project"
  fi

  echo -Dsonar.host.url=$SONAR_HOST_URL \
       -Dsonar.organization=$SONAR_ORGANIZATION \
       -Dsonar.php.tests.reportPath=$SONAR_RESULT \
       -Dsonar.php.coverage.reportPaths=$SONAR_COVERAGE \
       -Dsonar.analysis.buildNumber=$BUILD_NUMBER \
       -Dsonar.analysis.pipeline=$BUILD_NUMBER \
       -Dsonar.analysis.sha1=$GIT_COMMIT \
       -Dsonar.analysis.repository=$REPO \
       $extra
}

function gitFetch {
  echo '== gitFetch'
  echo '# git fetch --all'
  git fetch --all
  if [ "$RUNREVPARSE" == "true" ]; then
    if [ -n "${PULL_REQUEST_BASEBRANCH:-}" ]; then
      echo "# git branch -D $PULL_REQUEST_BASEBRANCH"
      git branch -D $PULL_REQUEST_BASEBRANCH
      echo "# git rev-parse origin/$PULL_REQUEST_BASEBRANCH"
      git rev-parse origin/$PULL_REQUEST_BASEBRANCH
    fi
  fi
  echo ''
}

if [ -z "${SONAR_HOST_URL:-}" ]; then
  export SONAR_HOST_URL=https://sonarcloud.io
fi

if [ "$BRANCH" == "master" ] && [ "$PR_NUMBER" == "false" ] && [ -n "${SONAR_TOKEN:-}" ]; then
  echo '=========================='
  echo '== SONAR:Analyze master =='
  echo '=========================='
  installSonar
  gitFetch

  SONAR_PARAMS="$(CommonParams) \
    -Dsonar.projectVersion=master"

  echo "# sonar-scanner $SONAR_PARAMS"
  $SONAR_SCANNER_HOME/bin/sonar-scanner $SONAR_PARAMS -Dsonar.login=$SONAR_TOKEN
  exit $?

elif [ -n "${BRANCH:-}" ] && [ "$PR_NUMBER" == "false" ] && [ -n "${SONAR_TOKEN:-}" ]; then
  echo '=================================='
  echo '== SONAR:Analyze release branch =='
  echo '=================================='
  installSonar
  gitFetch

  SONAR_PARAMS="$(CommonParams) \
    -Dsonar.projectVersion=$(git describe --abbrev=0 --tags --exact-match ${GIT_COMMIT} 2>/dev/null >/dev/null)"

  echo "# sonar-scanner $SONAR_PARAMS"
  $SONAR_SCANNER_HOME/bin/sonar-scanner $SONAR_PARAMS -Dsonar.login=$SONAR_TOKEN
  exit $?

elif [ "$PR_NUMBER" != "false" ] && [ -n "${SONAR_TOKEN:-}" ] && [ -n "${GITHUB_TOKEN:-}" ]; then

  REPOS_VALUES=($(curl -H "Authorization: token $GITHUB_TOKEN" -sSL https://api.github.com/repos/$REPO/pulls/$PR_NUMBER | jq -r -c ".head.repo.full_name, .head.repo.owner.login, .base.ref, .head.ref"))

  PULL_REQUEST_BRANCH=
  PULL_REQUEST_REPOSITORY=${REPOS_VALUES[0]}
  PULL_REQUEST_USER=${REPOS_VALUES[1]}
  PULL_REQUEST_BASEBRANCH=${REPOS_VALUES[2]}
  PULL_REQUEST_HEADBRANCH=${REPOS_VALUES[3]}

  if [ -z "${PULL_REQUEST_REPOSITORY:-}" ] || [ "$PULL_REQUEST_REPOSITORY" == "null" ]; then
    echo '== Error with github api call'
    exit 11
  elif [ "$PULL_REQUEST_REPOSITORY" == "$REPOSITORY_OWNER" ]; then
    echo '========================================='
    echo '== SONAR:Analyze internal pull request =='
    echo '========================================='
    PULL_REQUEST_BRANCH=$PULL_REQUEST_HEADBRANCH
  else
    echo '========================================='
    echo '== SONAR:Analyze external pull request =='
    echo '========================================='
    echo "== External repository: $PULL_REQUEST_REPOSITORY"
    PULL_REQUEST_BRANCH="${PULL_REQUEST_USER}__$PULL_REQUEST_HEADBRANCH"
  fi
  echo "PULL_REQUEST_BRANCH=$PULL_REQUEST_BRANCH"
  echo "PULL_REQUEST_REPOSITORY=$PULL_REQUEST_REPOSITORY"
  echo "PULL_REQUEST_USER=$PULL_REQUEST_USER"
  echo "PULL_REQUEST_BASEBRANCH=$PULL_REQUEST_BASEBRANCH"
  echo "PULL_REQUEST_HEADBRANCH=$PULL_REQUEST_HEADBRANCH"

  installSonar
  gitFetch

  SONAR_PARAMS="$(CommonParams) \
    -Dsonar.pullrequest.key=$PR_NUMBER \
    -Dsonar.pullrequest.base=$PULL_REQUEST_BASEBRANCH \
    -Dsonar.pullrequest.branch=$PULL_REQUEST_BRANCH \
    -Dsonar.pullrequest.provider=GitHub \
    -Dsonar.pullrequest.github.repository=$REPO"

  echo "# sonar-scanner $SONAR_PARAMS"
  $SONAR_SCANNER_HOME/bin/sonar-scanner $SONAR_PARAMS -Dsonar.login=$SONAR_TOKEN
  exit $?

else
  echo '======================'
  echo '== SONAR:No analyze =='
  echo '======================'

fi