build.yaml

name: Build Playground API

on:
  workflow_dispatch:
    inputs:
      image_tag:
        description: 'Docker image tag'
        required: true
        default: 'latest'

jobs:
  build_on_master:
    runs-on: ubuntu-latest
    environment: develop
    permissions:
      contents: 'read'
      id-token: 'write'    
    outputs:
      develop_image_tag: ${{ steps.set-tag.outputs.develop_image_tag }}

    steps:
      - uses: 'google-github-actions/auth@v2'
        if: ${{ github.ref == 'refs/heads/master' }}
        with:
          workload_identity_provider: ${{ vars.GCP_WORKLOAD_IDP }}
          service_account: ${{ vars.GCP_IDP_SERVICE_ACCOUNT_ARTIFACT_REGISTRY }}

      - name: 'Set up Cloud SDK'
        if: ${{ github.ref == 'refs/heads/master' }}
        uses: 'google-github-actions/setup-gcloud@v2'
        with:
          version: '>= 363.0.0'

      - name: Configure Docker to use gcloud as a credential helper
        if: ${{ github.ref == 'refs/heads/master' }}
        run: |
          gcloud auth configure-docker ${{ vars.GCP_ARTIFACT_ID }}

      - name: Pull the develop Docker image
        if: ${{ github.ref == 'refs/heads/master' }}
        run: |
          docker pull ${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }}
      
      - id: set-tag
        name: Set docker image tag output
        run: echo "develop_image_tag=${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }}" >> "$GITHUB_OUTPUT"
      
      - name: Save Docker image as tar
        if: ${{ github.ref == 'refs/heads/master' }}
        run: |
          docker save -o /tmp/playground-api_${{ github.event.inputs.image_tag }}.tar ${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }}

      - name: Upload artifact
        if: ${{ github.ref == 'refs/heads/master' }}
        uses: actions/upload-artifact@v4
        with:
          name: ${{ github.event.inputs.image_tag }}
          path: /tmp/playground-api${{ github.event.inputs.image_tag }}.tar
          retention-days: 1     

  deploy:
    environment: ${{ 
      github.ref == 'refs/heads/master' && 'production' || 
      'develop' }}
    runs-on: ubuntu-latest
    permissions:
      contents: 'read'
      id-token: 'write'

    steps:
      - env:
          DEVELOP_IMAGE_TAG: ${{ needs.build_on_master.outputs.develop_image_tag }}
        run: echo "$DEVELOP_IMAGE_TAG"

      - name: Download artifact
        uses: actions/download-artifact@v4
        if: ${{ github.ref == 'refs/heads/master' }}
        with:
          name: ${{ github.event.inputs.image_tag }}
          path: /tmp
      
      - name: Load image
        if: ${{ github.ref == 'refs/heads/master' }}
        run: |
          docker load --input /tmp/playground-api_${{ github.event.inputs.image_tag }}.tar
          docker image ls -a

      - name: Checkout code
        uses: actions/checkout@v4
        with:
          repository: 'hedera-dev/playground-backend'  
          ref: ${{ github.ref }}
      
      - uses: 'google-github-actions/auth@v2'
        with:
          workload_identity_provider: ${{ vars.GCP_PLAYGROUND_WORKLOAD_IDP }}
          service_account: ${{ vars.GCP_PLAYGROUND_SERVICE_ACCOUNT }}

      - name: 'Set up Cloud SDK'
        uses: 'google-github-actions/setup-gcloud@v2'
        with:
          version: '>= 363.0.0'

      - name: Configure Docker to use gcloud as a credential helper
        run: |
          gcloud auth configure-docker ${{ vars.GCP_ARTIFACT_ID }}

      - name: Build or Tag Docker image
        run: |
          if [ "${{ github.ref }}" == "refs/heads/master" ]; then
            echo "Tagging image: ${{ needs.build_on_master.outputs.develop_image_tag }} - to - ${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }}"
            docker tag ${{ needs.build_on_master.outputs.develop_image_tag }} ${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }}
          else
            echo "Building image for develop branch"
            docker build -t ${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }} ./app/playground-api/.
          fi
          
      - name: Push Docker image to Google Artifact Registry
        run: |
          docker push ${{ vars.GCP_ARTIFACT_REPOSITORY }}/playground/playground-api:${{ github.event.inputs.image_tag }}

      # Should we tag?
      #- name: Create and push a new git tag
      #  if: ${{ github.ref == 'refs/heads/develop' && github.event.inputs.image_tag != 'latest' }}
      #  run: |
      #    git config --global user.name 'github-actions[bot]'
      #    git config --global user.email 'github-actions[bot]@users.noreply.github.com'
      #    git fetch --all
      #    git checkout develop       
      #    git tag -a "v${{ github.event.inputs.image_tag }}" -m "Version ${{ github.event.inputs.image_tag }}"
      #    git push origin "v${{ github.event.inputs.image_tag }}"