image: php

variables:
  DOCKER_DRIVER: overlay2
  TEST_IMAGE: ${CI_REGISTRY_IMAGE}/engelsystem:${CI_COMMIT_REF_SLUG}
  TEST_IMAGE_NGINX: ${CI_REGISTRY_IMAGE}/nginx:${CI_COMMIT_REF_SLUG}
  RELEASE_IMAGE: ${CI_REGISTRY_IMAGE}/engelsystem:latest
  RELEASE_IMAGE_NGINX: ${CI_REGISTRY_IMAGE}/nginx:latest
  MYSQL_DATABASE: engelsystem
  MYSQL_USER: engel
  MYSQL_PASSWORD: engelsystem
  MYSQL_HOST: mariadb
  MYSQL_RANDOM_ROOT_PASSWORD: "yes"
  MYSQL_INITDB_SKIP_TZINFO: "yes"
  DOCROOT: /var/www/

stages:
  - validate
  - build
  - test
  - release
  - deploy
  - deploy-production
  - stop

#
# Validation
#

check-style:
  image: composer:latest
  stage: validate
  before_script:
    - composer --no-ansi global require squizlabs/php_codesniffer
    - export PATH=$PATH:$COMPOSER_HOME/vendor/bin
  script:
    - phpcs -p --no-colors --basepath="$PWD"

check-editorconfig:
  image: mstruebing/editorconfig-checker
  stage: validate
  script:
    - ec -v

validate-composer:
  image: composer:latest
  stage: validate
  script:
    - composer --no-ansi validate --strict

validate-yarn:
  image: node:alpine
  stage: validate
  before_script:
    - yarn global add package-json-validator
    - export PATH=$PATH:~/.yarn/bin
  script:
    - pjv

#
# Build
#

.docker_template: &docker_definition
  image: docker:18
  services:
    - docker:18-dind
  tags:
    - dind
  before_script:
    - docker login -u gitlab-ci-token -p "${CI_JOB_TOKEN}" "${CI_REGISTRY}"

build-image-nginx:
  <<: *docker_definition
  stage: build
  needs:
    - check-editorconfig
    - validate-yarn
  artifacts:
    name: "${CI_JOB_NAME}_${CI_JOB_ID}_assets"
    expire_in: 1 day
    paths:
      - ./public/assets
  script:
    - docker build --pull -t "${TEST_IMAGE_NGINX}" -f docker/nginx/Dockerfile .
    - docker push "${TEST_IMAGE_NGINX}"
    - instance=$(docker create "${TEST_IMAGE_NGINX}")
    - docker cp "${instance}:/var/www/public/assets" public/
    - docker rm "${instance}"

build-image:
  <<: *docker_definition
  stage: build
  needs:
    - check-editorconfig
    - validate-composer
    - check-style
  script:
    - apk add -q git
    - VERSION="$(git describe --abbrev=0 --tags)-${CI_COMMIT_REF_NAME}+${CI_PIPELINE_ID}.${CI_COMMIT_SHORT_SHA}"
    - docker build --pull --build-arg VERSION="${VERSION}" -t "${TEST_IMAGE}" -f docker/Dockerfile .
    - docker push "${TEST_IMAGE}"

#
# Test
#

audit-composer:
  image: ${TEST_IMAGE}
  stage: test
  needs: [ build-image ]
  before_script:
    - curl -sSo /usr/local/bin/security-checker https://get.sensiolabs.org/security-checker.phar
    - chmod +x /usr/local/bin/security-checker
    - cd "${DOCROOT}"
  script:
    - security-checker --no-ansi security:check

audit-yarn:
  image: node:alpine
  stage: test
  needs: [ ]
  script:
    - yarn audit

test:
  image: ${TEST_IMAGE}
  stage: test
  needs: [ build-image ]
  services:
    - mariadb:10.2
  artifacts:
    name: "${CI_JOB_NAME}_${CI_JOB_ID}"
    expire_in: 1 week
    when: always
    paths:
      - ./coverage/
      - ./unittests.xml
    reports:
      junit: ./unittests.xml
  coverage: '/^\s*Lines:\s*(\d+(?:\.\d+)?%)/'
  before_script:
    - apk add -q ${PHPIZE_DEPS} && pecl install pcov > /dev/null && docker-php-ext-enable pcov
    - curl -sS https://getcomposer.org/installer | php -- --no-ansi --install-dir /usr/local/bin/ --filename composer
    - cp -R tests/ phpunit.xml "${DOCROOT}"
    - HOMEDIR=$PWD
    - cd "${DOCROOT}"
    - composer --no-ansi install
    - ./bin/migrate
  script:
    - >-
      php -d pcov.enabled=1 vendor/bin/phpunit -vvv --colors=never
      --coverage-text --coverage-html "${HOMEDIR}/coverage/"
      --log-junit "${HOMEDIR}/unittests.xml"
  after_script:
    - '"${DOCROOT}/bin/migrate" down'

dump-database:
  image: ${TEST_IMAGE}
  stage: test
  needs: [ build-image ]
  services:
    - mariadb:10.2
  artifacts:
    expire_in: 1 week
    paths:
      - initial-install.sql
  before_script:
    - apk add -q mariadb-client
    - HOMEDIR=$PWD
    - cd "${DOCROOT}"
    - ./bin/migrate
  script:
    - >-
      mysqldump -h "${MYSQL_HOST}" -u "${MYSQL_USER}" -p"${MYSQL_PASSWORD}" "${MYSQL_DATABASE}"
      > "${HOMEDIR}/initial-install.sql"

#
# Release
#

release-image:
  <<: *docker_definition
  stage: release
  needs: [ test ]
  dependencies: [ ]
  script:
    - docker pull "${TEST_IMAGE}"
    - docker tag "${TEST_IMAGE}" "${RELEASE_IMAGE}"
    - docker push "${RELEASE_IMAGE}"
  only:
    - master

release-image-nginx:
  <<: *docker_definition
  stage: release
  needs:
    - test
    - build-image-nginx
  dependencies: [ ]
  script:
    - docker pull "${TEST_IMAGE_NGINX}"
    - docker tag "${TEST_IMAGE_NGINX}" "${RELEASE_IMAGE_NGINX}"
    - docker push "${RELEASE_IMAGE_NGINX}"
  only:
    - master

.deploy_template: &deploy_definition
  stage: release
  image: ${TEST_IMAGE}
  before_script:
    - apk add -q bash rsync openssh-client

build-release-file:
  <<: *deploy_definition
  stage: release
  needs:
    - build-image
    - build-image-nginx
    - audit-yarn
    - audit-composer
    - test
    - dump-database
  dependencies:
    - build-image
    - build-image-nginx
    - dump-database
  artifacts:
    name: release_${CI_COMMIT_REF_SLUG}_${CI_JOB_ID}_${CI_COMMIT_SHA}
    expire_in: 1 week
    paths:
      - ./release/
  script:
    - rsync -vAax "${DOCROOT}" "${DOCROOT}/.babelrc" "${DOCROOT}/.browserslistrc" "initial-install.sql" release/
    - rsync -vAax public/assets release/public/

pages:
  image: node:alpine
  stage: release
  needs: [ test ]
  dependencies: [ test ]
  script:
    - rm -rf public
    - mv coverage public
    - cp unittests.xml public/
  artifacts:
    expire_in: 1 week
    paths:
      - public
  only:
    - master
  variables:
    GIT_STRATEGY: none

#
# Deploy staging
#

.deploy_template_script:
  # Configure SSH
  - &deploy_template_script |-
    eval $(ssh-agent -s) && echo "${SSH_PRIVATE_KEY}" | ssh-add -
    rsync -vAax public/assets ${DOCROOT}/public/
    cd "${DOCROOT}"

deploy:
  <<: *deploy_definition
  stage: deploy
  needs: &deploy_needs
    - release-image
    - build-image-nginx
  dependencies: *deploy_needs
  environment:
    name: staging
  only:
    - master
  script:
    # Check if deployment variables where set
    - |-
      if [ -z "${SSH_PRIVATE_KEY}" ] || [ -z "${STAGING_REMOTE}" ] || [ -z "${STAGING_REMOTE_PATH}" ]; then
        echo "Skipping deployment"
        exit
      fi
    - *deploy_template_script
    # Deploy to server
    - ./bin/deploy.sh -r "${STAGING_REMOTE}" -p "${STAGING_REMOTE_PATH}" -i "${CI_JOB_ID}-${CI_COMMIT_SHA}"

.kubectl_deployment: &kubectl_deployment
  stage: deploy
  image:
    name: bitnami/kubectl:latest
    entrypoint: [ '' ]
  needs:
    - test
    - build-image
    - build-image-nginx
  before_script:
    - &kubectl_deployment_script if [[ -z "${KUBE_INGRESS_BASE_DOMAIN}" ]]; then echo "Skipping deployment"; exit; fi

.deploy_k8s: &deploy_k8s
  <<: *kubectl_deployment
  dependencies: [ ]
  artifacts:
    name: deployment.yaml
    expire_in: 1 day
    when: always
    paths:
      - deployment.yaml
  script:
    # CI_ENVIRONMENT_URL is the URL configured in the GitLab environment
    - export CI_ENVIRONMENT_URL="${CI_ENVIRONMENT_URL:-https://${CI_PROJECT_PATH_SLUG}.${KUBE_INGRESS_BASE_DOMAIN}/}"
    - export CI_IMAGE=$RELEASE_IMAGE
    - export CI_IMAGE_NGINX=$RELEASE_IMAGE_NGINX
    - export CI_INGRESS_DOMAIN=$(echo "$CI_ENVIRONMENT_URL" | grep -oP '(?:https?://)?\K([^/]+)' | head -n1)
    - export CI_INGRESS_PATH=$(echo "$CI_ENVIRONMENT_URL" | grep -oP '(?:https?://)?(?:[^/])+\K(.*)')
    - export CI_KUBE_NAMESPACE=$KUBE_NAMESPACE
    # Any available storage class like longhorn
    - export CI_PVC_SC=${CI_PVC_SC:-"${CI_PVC_SC_LOCAL:-local-path}"}
    - export CI_REPLICAS=${CI_REPLICAS_REVIEW:-${CI_REPLICAS:-2}}
    - export CI_APP_NAME=${CI_APP_NAME:-Engelsystem}

    - cp deployment.tpl.yaml deployment.yaml
    - for env in ${!CI_*}; do sed -i "s#<${env}>#$(echo "${!env}"|head -n1)#g" deployment.yaml; done

    - echo "Deploying to ${CI_ENVIRONMENT_URL}"
    - kubectl apply -f deployment.yaml
    - >-
      kubectl -n $CI_KUBE_NAMESPACE wait --for=condition=Ready pods --timeout=${CI_WAIT_TIMEOUT:-5}m
      -l app=$CI_PROJECT_PATH_SLUG -l tier=database
    - >-
      kubectl -n $CI_KUBE_NAMESPACE wait --for=condition=Ready pods --timeout=${CI_WAIT_TIMEOUT:-5}m
      -l app=$CI_PROJECT_PATH_SLUG -l tier=application -l commit=$CI_COMMIT_SHORT_SHA

.deploy_k8s_stop: &deploy_k8s_stop
  <<: *kubectl_deployment
  stage: stop
  dependencies: [ ]
  variables:
    GIT_STRATEGY: none
  when: manual
  script:
    - kubectl delete all,ingress,pvc -l app=$CI_PROJECT_PATH_SLUG -l environment=$CI_ENVIRONMENT_SLUG

deploy-k8s-review:
  <<: *deploy_k8s
  environment:
    name: review/${CI_COMMIT_REF_NAME}
    on_stop: stop-k8s-review
    auto_stop_in: 1 week
    url: https://${CI_PROJECT_PATH_SLUG}-review.${KUBE_INGRESS_BASE_DOMAIN}/${CI_COMMIT_REF_SLUG}
  variables:
    CI_REPLICAS_REVIEW: 1
    CI_APP_NAME: review/${CI_COMMIT_REF_NAME}
  before_script:
    - *kubectl_deployment_script
    - RELEASE_IMAGE=$TEST_IMAGE
    - RELEASE_IMAGE_NGINX=$TEST_IMAGE_NGINX

stop-k8s-review:
  <<: *deploy_k8s_stop
  needs: [ deploy-k8s-review ]
  environment:
    name: review/${CI_COMMIT_REF_NAME}
    action: stop

#
# Deploy production
#

deploy-production:
  <<: *deploy_definition
  stage: deploy-production
  needs:
    - test
    - audit-yarn
    - audit-composer
    - build-image
    - build-image-nginx
  dependencies:
    - build-image
    - build-image-nginx
  environment:
    name: production
  when: manual
  only:
    - master
  script:
    # Check if deployment variables where set
    - |-
      if [ -z "${SSH_PRIVATE_KEY}" ] || [ -z "${PRODUCTION_REMOTE}" ] || [ -z "${PRODUCTION_REMOTE_PATH}" ]; then
        echo "Skipping deployment"
        exit
      fi
    - *deploy_template_script
    # Deploy to server
    - ./bin/deploy.sh -r "${PRODUCTION_REMOTE}" -p "${PRODUCTION_REMOTE_PATH}" -i "${CI_JOB_ID}-${CI_COMMIT_SHA}"

deploy-k8s-production:
  <<: *deploy_k8s
  stage: deploy-production
  needs:
    - release-image
    - release-image-nginx
    - audit-yarn
    - audit-composer
  environment:
    name: production
    on_stop: stop-k8s-production
  when: manual
  only:
    - master

stop-k8s-production:
  <<: *deploy_k8s_stop
  needs: [ deploy-k8s-production ]
  only:
    - master
  environment:
    name: production
    action: stop