# References:
# 1. https://circleci.com/blog/how-to-build-a-docker-image-on-circleci-2-0/
# 2. https://circleci.com/docs/2.0/building-docker-images/
#

version: 2

main_filters: &main_filters
  branches:
    ignore:
      - /^(?:release|test)-20\d\d\d\d\d\d\.\d+/
      - /\//
      - production

defaults:
  bmo_slim_image: &bmo_slim_image
    image: bugzilla/harmony-slim:20180318.1
    user: app

  mysql_image: &mysql_image
    image: mozillabteam/bmo-mysql:5.6

  bmo_env: &bmo_env
    PORT: 8000
    LOGGING_PORT: 5880
    LOCALCONFIG_ENV: 1
    LOG4PERL_CONFIG_FILE: log4perl-test.conf
    BMO_db_user: bugs
    BMO_db_host: 127.0.0.1
    BMO_db_pass: bugs
    BMO_db_name: bugs
    BMO_memcached_servers: localhost:11211
    BMO_memcached_namespace: "bugzilla:"
    BMO_urlbase: AUTOMATIC
    HTTPD_StartServers: 1
    HTTPD_MinSpareServers: 1
    HTTPD_MaxSpareServers: 1
    HTTPD_ServerLimit: 1
    HTTPD_MaxClients: 1
    HTTPD_MaxRequestsPerChild: 4000

  mysql_env: &mysql_env
    MYSQL_DATABASE: bugs
    MYSQL_USER: bugs
    MYSQL_PASSWORD: bugs
    MYSQL_ALLOW_EMPTY_PASSWORD: 1

  docker_oldtests: &docker_oldtests
    - <<: *bmo_slim_image
      environment:
        <<: *bmo_env
        BZ_QA_CONF_FILE: /app/.circleci/selenium_test.conf
        BZ_QA_ANSWERS_FILE:  /app/.circleci/checksetup_answers.legacy.txt
        BZ_QA_LEGACY_MODE: 1
    - <<: *mysql_image
      environment: *mysql_env
    - image: selenium/standalone-firefox:2.53.1
    - image: memcached:latest

  default_qa_setup: &default_qa_setup
    run:
      name: default qa setup
      command: |
        [[ -f build_info/only_version_changed.txt ]] && exit 0
        mv /opt/bmo/local /app/local
        perl -MSys::Hostname -i -pE 's/bmo.test/hostname() . ":$ENV{PORT}"/ges' $BZ_QA_CONF_FILE
        /app/scripts/entrypoint.pl checksetup_gen_files --default-localconfig
        mkdir artifacts

jobs:
  build_info:
    parallelism: 1
    working_directory: /app
    docker:
      - <<: *bmo_slim_image
        environment:
          <<: *bmo_env
    steps:
      - checkout
      - run:
          name: build push data
          command: |
            mv /opt/bmo/local /app/local
            perl checksetup.pl --no-database --no-templates --no-permissions
            perl scripts/build-bmo-push-data.pl
      - run:
          name: only publish if tag exists
          command: |
            tag="$(cat build_info/tag.txt)"
            git fetch --tags
            if git tag | fgrep -q "$tag"; then
              echo "tag $tag exists!"
            else
              echo "tag $tag does not exist"
              echo yes > build_info/publish.txt
            fi
      - run:
          name: check if only version changed
          command: |
            if git diff 'HEAD~..HEAD' --name-only | grep -qv '^Bugzilla.pm'; then
              echo "more files than just Bugzilla.pm changed."
              exit 0
            fi
            if git diff 'HEAD~..HEAD' |grep '^[+-][^+-]' | grep -qv '^[+-]our $VERSION'; then
              echo "Something other than the version number changed."
              exit 0
            fi
            if [[ "$CIRCLE_BRANCH" == "master" ]]; then
              echo "Can't cut corners on the master branch"
              exit 0
            fi
            echo yes > build_info/only_version_changed.txt
      - persist_to_workspace:
          root: /app/build_info
          paths: ["*.txt"]
      - store_artifacts:
          path: /app/build_info

  build:
    working_directory: /app
    docker:
      - image: docker:17.06.1-ce
    steps:
      - setup_remote_docker
      - run:
          name: install git and ssh
          command: apk update && apk add git openssh-client
      - checkout
      - run: |
          docker build \
            --build-arg CI="$CI" \
            --build-arg CIRCLE_SHA1="$CIRCLE_SHA1" \
            --build-arg CIRCLE_BUILD_URL="$CIRCLE_BUILD_URL" \
            -t bmo .
      - attach_workspace:
          at: /app/build_info
      - run: "docker run --name bmo --entrypoint true bmo"
      - run: "docker cp bmo:/app/version.json build_info/version.json"
      - store_artifacts:
          path: /app/build_info
      - deploy:
          command: |
            TAG="$(cat /app/build_info/tag.txt)"
            [[ "$CIRCLE_BRANCH" == "master" ]] || exit 0
            [[ -n "$DOCKERHUB_REPO" && -n "$DOCKER_USER" && -n "$DOCKER_PASS" ]] || exit 0
            [[ -n "$GITHUB_PERSONAL_TOKEN" ]] || exit 0
            docker login -u "$DOCKER_USER" -p "$DOCKER_PASS"
            if [[ -n "$TAG" && -f build_info/publish.txt ]]; then
              git config credential.helper "cache --timeout 120"
              git config user.email "$GITHUB_EMAIL"
              git config user.name "$GITHUB_NAME"
              git tag $TAG
              git push https://${GITHUB_PERSONAL_TOKEN}:x-oauth-basic@github.com/$GITHUB_REPO.git $TAG
              docker tag bmo "$DOCKERHUB_REPO:$TAG"
              docker push "$DOCKERHUB_REPO:$TAG"
            fi
            docker tag bmo "$DOCKERHUB_REPO:latest"
            docker push "$DOCKERHUB_REPO:latest"

  test_sanity:
    parallelism: 2
    working_directory: /app
    docker:
      - <<: *bmo_slim_image
        environment: *bmo_env
    steps:
      - checkout
      - attach_workspace:
          at: /app/build_info
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          mv /opt/bmo/local /app/local
          mkdir artifacts
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          perl Makefile.PL
      - run:
          name: run sanity tests
          command: |
            [[ -f build_info/only_version_changed.txt ]] && exit 0
            /app/scripts/entrypoint.pl prove -qf $(circleci tests glob 't/*.t' | circleci tests split) | tee artifacts/$CIRCLE_JOB.txt
      - store_artifacts:
          path: /app/artifacts

  test_webservices:
    parallelism: 1
    working_directory: /app
    docker: *docker_oldtests
    steps:
      - checkout
      - attach_workspace:
          at: /app/build_info
      - *default_qa_setup
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          /app/scripts/entrypoint.pl load_test_data
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          /app/scripts/entrypoint.pl test_webservices | tee artifacts/$CIRCLE_JOB.txt
      - store_artifacts:
          path: /app/artifacts

  test_selenium:
    parallelism: 1
    working_directory: /app
    docker: *docker_oldtests
    steps:
      - checkout
      - attach_workspace:
          at: /app/build_info
      - *default_qa_setup
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          /app/scripts/entrypoint.pl load_test_data --legacy
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          /app/scripts/entrypoint.pl test_selenium | tee artifacts/$CIRCLE_JOB.txt
      - store_artifacts:
          path: /app/artifacts

  test_bmo:
    parallelism: 1
    working_directory: /app
    docker:
      - <<: *bmo_slim_image
        environment:
          <<: *bmo_env
          BZ_QA_ANSWERS_FILE:  /app/.circleci/checksetup_answers.txt
          TWD_HOST: localhost
          TWD_PORT: 4444
          TWD_BROWSER: firefox
      - <<: *mysql_image
        environment: *mysql_env
      - image: memcached:latest
      - image: selenium/standalone-firefox:2.53.1
    steps:
      - checkout
      - attach_workspace:
          at: /app/build_info
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          mv /opt/bmo/local /app/local
          /app/scripts/entrypoint.pl checksetup_gen_files
          /app/scripts/entrypoint.pl load_test_data
          mkdir artifacts
      - run: |
          [[ -f build_info/only_version_changed.txt ]] && exit 0
          /app/scripts/entrypoint.pl test_bmo -q -f t/bmo/*.t

workflows:
  version: 2
  main:
    jobs:
      - build_info:
          filters: *main_filters
      - build:
          filters: *main_filters
          requires:
            - build_info
            - test_sanity
            - test_bmo
            - test_webservices
            - test_selenium
      - test_sanity:
          filters: *main_filters
          requires:
            - build_info
      - test_bmo:
          filters: *main_filters
          requires:
            - build_info
      - test_webservices:
          filters: *main_filters
          requires:
            - build_info
      - test_selenium:
          filters: *main_filters
          requires:
            - build_info