stages:
  - test
  - build
  - deploy

variables:
  DOCKER_DRIVER: overlay2
  DOCKER_TLS_CERTDIR: ""

# Lint and Test
.test:
  image: golang:1.21-alpine
  before_script:
    - apk add --no-cache git curl
    - go version

lint:
  stage: test
  extends: .test
  script:
    - go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
    - golangci-lint run ./...

test:
  stage: test
  extends: .test
  script:
    - go test -v -race ./...
  coverage: '/coverage: \d+\.\d+%/'
  artifacts:
    reports:
      coverage_report:
        coverage_format: golang
        path: coverage.out

# Build Docker Image
build:
  stage: build
  image: docker:24-dind
  services:
    - docker:24-dind
  before_script:
    - docker info
    - echo "$CI_REGISTRY_PASSWORD" | docker login -u "$CI_REGISTRY_USER" --password-stdin $CI_REGISTRY
  script:
    - docker build -t $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA .
    - docker build -t $CI_REGISTRY_IMAGE:latest .
    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
    - docker push $CI_REGISTRY_IMAGE:latest
  only:
    - main
    - develop
  needs:
    - test

# Deploy to Staging
deploy-staging:
  stage: deploy
  image: bitnami/kubectl:latest
  environment:
    name: staging
    url: https://staging.myapp.com
  before_script:
    - kubectl version --client
    - echo "$KUBE_CONFIG_STAGING" | base64 -d > kubeconfig
    - export KUBECONFIG=kubeconfig
  script:
    - kubectl set image deployment/myapp app=$CI_REGISTRY_IMAGE:$CI_COMMIT_SHA -n staging
    - kubectl rollout status deployment/myapp -n staging
    - curl -f https://staging.myapp.com/health || exit 1
  only:
    - develop
  needs:
    - build

# Deploy to Production
deploy-production:
  stage: deploy
  image: bitnami/kubectl:latest
  environment:
    name: production
    url: https://myapp.com
  before_script:
    - kubectl version --client
    - echo "$KUBE_CONFIG_PRODUCTION" | base64 -d > kubeconfig
    - export KUBECONFIG=kubeconfig
  script:
    - kubectl set image deployment/myapp app=$CI_REGISTRY_IMAGE:$CI_COMMIT_SHA -n production
    - kubectl rollout status deployment/myapp -n production
  only:
    - main
  needs:
    - build

# Deploy with Helm
deploy-helm:
  stage: deploy
  image: alpine/helm:latest
  environment:
    name: production
  before_script:
    - kubectl version --client
    - echo "$KUBE_CONFIG_PRODUCTION" | base64 -d > kubeconfig
    - export KUBECONFIG=kubeconfig
  script:
    - helm repo add bitnami https://charts.bitnami.com/bitnami
    - helm upgrade --install myapp ./charts/myapp
      --namespace production
      --set image.repository=$CI_REGISTRY_IMAGE
      --set image.tag=$CI_COMMIT_SHA
      --wait --atomic
  only:
    - main
  needs:
    - build