backend-deploy.yml

name: Backend Deploy to Cloud Run
run-name: "Cloud Deploy #${{ github.run_number }} by @${{ github.actor }}"

on:
  workflow_dispatch:

env:
  PROJECT_ID: job-tracker-pro-480917
  REGION: asia-south1
  REPO_NAME: my-repo
  SERVICE_NAME: jobtracker-service
  IMAGE_NAME: my-java-app

jobs:
  deploy:
    name: Deploy Backend
    runs-on: ubuntu-latest

    # Optional guard: deploy only from main
    if: github.ref == 'refs/heads/main'

    environment:
      name: production

    steps:
      - uses: actions/checkout@v4

      - name: Google Auth
        uses: google-github-actions/auth@v2
        with:
          credentials_json: '${{ secrets.GCP_CREDENTIALS }}'

      - name: Docker Auth
        run: gcloud auth configure-docker ${{ env.REGION }}-docker.pkg.dev

      - name: Build and Push Image
        run: |
          TAG="${{ env.REGION }}-docker.pkg.dev/${{ env.PROJECT_ID }}/${{ env.REPO_NAME }}/${{ env.IMAGE_NAME }}:${{ github.sha }}"
          docker build -t $TAG ./backend
          docker push $TAG
          echo "IMAGE_TAG=$TAG" >> $GITHUB_ENV

      - name: Update Service YAML
        run: |
          sed -i "s|image: .*|image: ${{ env.IMAGE_TAG }}|g" backend/service.yaml
          cat backend/service.yaml

      - name: Deploy to Cloud Run
        uses: google-github-actions/deploy-cloudrun@v2
        with:
          metadata: backend/service.yaml
          region: ${{ env.REGION }}