apply-on-merge.yaml

name: Apply On Merge

on:
  push:
    branches:
      - main
  # pull_request:
  #   branches:
  #     - main

env:
  PROJECT_ID: ${{ secrets.PROJECT_ID }}
  GKE_CLUSTER: fibonacci-app            # TODO: update to cluster name
  GKE_ZONE: northamerica-northeast1-a	  # TODO: update to cluster zone

jobs:
  build-and-push:
    name: Build application Docker images and push them to the registry
    runs-on: ubuntu-latest
    strategy:
      matrix:
        module:
          - client
          - server
          - worker

    steps:
    - name: Checkout
      uses: actions/checkout@v3

    - name: Run tests
      if: ${{ matrix.module == 'client' }}
      run: |
        echo "Build a docker image for tests"
        docker build -t client-test -f ./client/Dockerfile.dev ./client
        echo "Run tests against that image"
        docker run -e CI=true client-test npm test

    - name: Login to Docker Hub
      uses: docker/login-action@v1
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_TOKEN }}

    - name: Build and push the image for the module to the registry
      run: |-
        echo "Building the production docker image for the module"
        docker build -t thecloudprofessional/${{ matrix.module }}:latest -t thecloudprofessional/${{ matrix.module }}:${{ github.sha }} ./${{ matrix.module }}
        echo "Pushing the image to the registry..."
        docker push thecloudprofessional/${{ matrix.module }}:latest
        docker push thecloudprofessional/${{ matrix.module }}:${{ github.sha }}

  deployStaging:
    name: Deploy to Staging
    runs-on: ubuntu-latest
    needs: [build-and-push]

    steps:
    - name: Checkout
      uses: actions/checkout@v3

    - id: 'auth'
      uses: 'google-github-actions/auth@v0'
      with:
        credentials_json: '${{ secrets.SA_KEY }}'

    - name: Set up Cloud SDK
      uses: google-github-actions/setup-gcloud@v0

    - name: Get the GKE credentials so we can deploy to the cluster
      run: |-
        gcloud container clusters get-credentials "$GKE_CLUSTER" --zone "$GKE_ZONE"

    - name: Deploy
      run: |-   
        kubectl apply -f k8s
        kubectl set image deployments/server-deployment server=thecloudprofessional/server:${{ github.sha }}
        kubectl set image deployments/worker-deployment worker=thecloudprofessional/worker:${{ github.sha }}
        kubectl set image deployments/client-deployment client=thecloudprofessional/client:${{ github.sha }}
        kubectl rollout status deployment/server-deployment
        kubectl rollout status deployment/worker-deployment
        kubectl rollout status deployment/client-deployment
        kubectl get services -o wide