# See https://zulip.readthedocs.io/en/latest/testing/continuous-integration.html for
#   high-level documentation on our CircleCI setup.
# See CircleCI upstream's docs on this config format:
#   https://circleci.com/docs/2.0/language-python/
#
version: 2.0
aliases:
  - &create_cache_directories
    run:
      name: create cache directories
      command: |
        dirs=(/srv/zulip-{npm,venv,emoji}-cache)
        sudo mkdir -p "${dirs[@]}"
        sudo chown -R circleci "${dirs[@]}"

  - &restore_cache_package_json
    restore_cache:
      keys:
        - v1-npm-base.{{ .Environment.CIRCLE_JOB }}-{{ checksum "package.json" }}-{{ checksum "yarn.lock" }}

  - &restore_cache_requirements
    restore_cache:
      keys:
        - v1-venv-base.{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements/thumbor-dev.txt" }}-{{ checksum "requirements/dev.txt" }}

  - &restore_emoji_cache
    restore_cache:
      keys:
        - v1-venv-base.{{ .Environment.CIRCLE_JOB }}-{{ checksum "tools/setup/emoji/emoji_map.json" }}-{{ checksum "tools/setup/emoji/build_emoji" }}-{{checksum "tools/setup/emoji/emoji_setup_utils.py" }}-{{ checksum "tools/setup/emoji/emoji_names.py" }}-{{ checksum "package.json" }}

  - &install_dependencies
    run:
      name: install dependencies
      command: |
        sudo apt-get update
        # Install moreutils so we can use `ts` and `mispipe` in the following.
        sudo apt-get install -y moreutils

        # CircleCI sets the following in Git config at clone time:
        #   url.ssh://git@github.com.insteadOf https://github.com
        # This breaks the Git clones in the NVM `install.sh` we run
        # in `install-node`.
        # TODO: figure out why that breaks, and whether we want it.
        #   (Is it an optimization?)
        rm -f /home/circleci/.gitconfig

        # This is the main setup job for the test suite
        mispipe "tools/ci/setup-backend --skip-dev-db-build" ts

        # Cleaning caches is mostly unnecessary in Circle, because
        # most builds don't get to write to the cache.
        # mispipe "scripts/lib/clean-unused-caches --verbose --threshold 0 2>&1" ts

  - &save_cache_package_json
    save_cache:
      paths:
        - /srv/zulip-npm-cache
      key: v1-npm-base.{{ .Environment.CIRCLE_JOB }}-{{ checksum "package.json" }}-{{ checksum "yarn.lock" }}

  - &save_cache_requirements
    save_cache:
      paths:
        - /srv/zulip-venv-cache
      key: v1-venv-base.{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements/thumbor-dev.txt" }}-{{ checksum "requirements/dev.txt" }}

  - &save_emoji_cache
    save_cache:
      paths:
        - /srv/zulip-emoji-cache
      key: v1-venv-base.{{ .Environment.CIRCLE_JOB }}-{{ checksum "tools/setup/emoji/emoji_map.json" }}-{{ checksum "tools/setup/emoji/build_emoji" }}-{{checksum "tools/setup/emoji/emoji_setup_utils.py" }}-{{ checksum "tools/setup/emoji/emoji_names.py" }}-{{ checksum "package.json" }}

  - &do_bionic_hack
    run:
      name: do Bionic hack
      command: |
        # Temporary hack till `sudo service redis-server start` gets fixes in Bionic. See
        # https://chat.zulip.org/#narrow/stream/3-backend/topic/Ubuntu.20bionic.20CircleCI
        sudo sed -i '/^bind/s/bind.*/bind 0.0.0.0/' /etc/redis/redis.conf

  - &run_backend_tests
    run:
      name: run backend tests
      command: |
        . /srv/zulip-py3-venv/bin/activate
        mispipe "./tools/ci/backend 2>&1" ts

  - &run_frontend_tests
    run:
      name: run frontend tests
      command: |
        . /srv/zulip-py3-venv/bin/activate
        mispipe "./tools/ci/frontend 2>&1" ts

  - &upload_coverage_report
    run:
      name: upload coverage report
      command: |
        # codecov requires `.coverage` file to be stored in pwd for
        # uploading coverage results.
        mv /home/circleci/zulip/var/.coverage /home/circleci/zulip/.coverage

        . /srv/zulip-py3-venv/bin/activate
        # TODO: Check that the next release of codecov doesn't
        # throw find error.
        # codecov==2.0.16 introduced a bug which uses "find"
        # for locating files which is buggy on some platforms.
        # It was fixed via https://github.com/codecov/codecov-python/pull/217
        # and should get automatically fixed here once it's released.
        # We cannot pin the version here because we need the latest version for uploading files.
        # see https://community.codecov.io/t/http-400-while-uploading-to-s3-with-python-codecov-from-travis/1428/7
        pip install codecov && codecov \
          || echo "Error in uploading coverage reports to codecov.io."

  - &build_production
    run:
      name: build production
      command: |
        sudo apt-get update
        # Install moreutils so we can use `ts` and `mispipe` in the following.
        sudo apt-get install -y moreutils

        mispipe "./tools/ci/production-build 2>&1" ts

  - &production_extract_tarball
    run:
      name: production extract tarball
      command: |
        sudo apt-get update
        # Install moreutils so we can use `ts` and `mispipe` in the following.
        sudo apt-get install -y moreutils

        mispipe "/tmp/production-extract-tarball 2>&1" ts

  - &install_production
    run:
      name: install production
      command: |
        sudo service rabbitmq-server restart
        sudo --preserve-env=CIRCLECI mispipe "/tmp/production-install 2>&1" ts

  - &verify_production
    run:
      name: verify install
      command: |
        sudo --preserve-env=CIRCLECI mispipe "/tmp/production-verify 2>&1" ts

  - &upgrade_postgresql
    run:
      name: upgrade postgresql
      command: |
        sudo --preserve-env=CIRCLECI mispipe "/tmp/production-upgrade-pg 2>&1" ts

  - &check_xenial_provision_error
    run:
      name: check tools/provision error message on xenial
      command: |
        ! tools/provision > >(tee provision.out)
        grep -Fqx 'CRITICAL:root:Unsupported platform: ubuntu 16.04' provision.out

  - &check_xenial_upgrade_error
    run:
      name: check scripts/lib/upgrade-zulip-stage-2 error message on xenial
      command: |
        ! sudo scripts/lib/upgrade-zulip-stage-2 2> >(tee upgrade.err >&2)
        grep -Fq 'upgrade-zulip-stage-2: Unsupported platform: ubuntu 16.04' upgrade.err

  - &notify_failure_status
    run:
      name: On fail
      when: on_fail
      branches:
        only: master
      command: |
        if [[ "$CIRCLE_REPOSITORY_URL" == "git@github.com:zulip/zulip.git" && "$ZULIP_BOT_KEY" != "" ]]; then
          curl  -H "Content-Type: application/json" \
          -X POST -i 'https://chat.zulip.org/api/v1/external/circleci?api_key='"$ZULIP_BOT_KEY"'&stream=automated%20testing&topic=master%20failing' \
          -d '{"payload": { "branch": "'"$CIRCLE_BRANCH"'", "reponame": "'"$CIRCLE_PROJECT_REPONAME"'", "status": "failed", "build_url": "'"$CIRCLE_BUILD_URL"'", "username": "'"$CIRCLE_USERNAME"'"}}'
        fi

jobs:
  "bionic-backend-frontend":
    docker:
      # This is built from tools/ci/images/bionic/Dockerfile .
      # Bionic ships with Python 3.6.
      - image: arpit551/circleci:bionic-python-test

    working_directory: ~/zulip

    steps:
      - checkout

      - *create_cache_directories
      - *do_bionic_hack
      - *restore_cache_package_json
      - *restore_cache_requirements
      - *restore_emoji_cache
      - *install_dependencies
      - *save_cache_package_json
      - *save_cache_requirements
      - *save_emoji_cache
      - *run_backend_tests

      - run:
          name: test locked requirements
          command: |
            . /srv/zulip-py3-venv/bin/activate
            mispipe "./tools/test-locked-requirements 2>&1" ts

      - *run_frontend_tests
        # We only need to upload coverage reports on whichever platform
        # runs the frontend tests.
      - *upload_coverage_report

      - store_artifacts:
          path: ./var/puppeteer/
          destination: puppeteer

      - *notify_failure_status

  "focal-backend":
    docker:
      # This is built from tools/ci/images/focal/Dockerfile.
      # Focal ships with Python 3.8.2.
      - image: arpit551/circleci:focal-python-test

    working_directory: ~/zulip

    steps:
      - checkout

      - *create_cache_directories
      - *restore_cache_package_json
      - *restore_cache_requirements
      - *restore_emoji_cache
      - *install_dependencies
      - *save_cache_package_json
      - *save_cache_requirements
      - *save_emoji_cache
      - *run_backend_tests
      - run:
          name: Check development database build
          command: mispipe "tools/ci/setup-backend" ts
      - *notify_failure_status

  "xenial-legacy":
    docker:
      - image: arpit551/circleci:xenial-python-test

    working_directory: ~/zulip

    steps:
      - checkout

      - *check_xenial_provision_error
      - *check_xenial_upgrade_error
      - *notify_failure_status

  "bionic-production-build":
    docker:
      # This is built from tools/ci/images/bionic/Dockerfile .
      # Bionic ships with Python 3.6.
      - image: arpit551/circleci:bionic-python-test

    working_directory: ~/zulip

    steps:
      - checkout

      - *create_cache_directories
      - *do_bionic_hack
      - *restore_cache_package_json
      - *restore_cache_requirements
      - *restore_emoji_cache
      - *build_production
      - *save_cache_package_json
      - *save_cache_requirements
      - *save_emoji_cache

      # Persist the built tarball to be used in downstream job
      # for installation of production server.
      # See https://circleci.com/docs/2.0/workflows/#using-workspaces-to-share-data-among-jobs
      - persist_to_workspace:
          # Must be an absolute path,
          # or relative path from working_directory.
          # This is a directory on the container which is
          # taken to be the root directory of the workspace.
          root: /tmp/production-build
          # Must be relative path from root
          paths:
            - "*"
      - *notify_failure_status

  "bionic-production-install":
    docker:
      # This is built from tools/ci/images/bionic/Dockerfile .
      # Bionic ships with Python 3.6.
      - image: arpit551/circleci:bionic-python-test

    working_directory: ~/zulip

    steps:
      # Contains the built tarball from bionic-production-build job
      - attach_workspace:
          # Must be absolute path or relative path from working_directory
          at: /tmp

      - *create_cache_directories
      - *do_bionic_hack
      - *production_extract_tarball
      - *restore_cache_package_json
      - *install_production
      - *verify_production
      - *upgrade_postgresql
      - *verify_production
      - *save_cache_package_json
      - *notify_failure_status

  "focal-production-install":
    docker:
      # This is built from tools/ci/images/focal/Dockerfile.
      # Focal ships with Python 3.8.2.
      - image: arpit551/circleci:focal-python-test

    working_directory: ~/zulip

    steps:
      # Contains the built tarball from bionic-production-build job
      - attach_workspace:
          # Must be absolute path or relative path from working_directory
          at: /tmp

      - *create_cache_directories

      - run:
          name: do memcached hack
          command: |
            # Temporary hack till memcached upstream is updated in Focal.
            # https://bugs.launchpad.net/ubuntu/+source/memcached/+bug/1878721
            echo "export SASL_CONF_PATH=/etc/sasl2" | sudo tee - a /etc/default/memcached

      - *production_extract_tarball
      - *restore_cache_package_json
      - *install_production
      - *verify_production
      - *save_cache_package_json
      - *notify_failure_status

workflows:
  version: 2
  "Ubuntu 16.04 Xenial (Python 3.5, legacy)":
    jobs:
      - "xenial-legacy"
  "Ubuntu 18.04 Bionic (Python 3.6, backend+frontend)":
    jobs:
      - "bionic-backend-frontend"
  "Ubuntu 20.04 Focal (Python 3.8, backend)":
    jobs:
      - "focal-backend"
  "Production":
    jobs:
      - "bionic-production-build"
      - "bionic-production-install":
          requires:
            - "bionic-production-build"
      - "focal-production-install":
          requires:
            - "bionic-production-build"