gcp_backend.yml

name: Deploy Backend to Cloud RUN

on:
  push:
    branches: [ "main" ]
    paths:
      - 'backend/**'
  workflow_dispatch:
    inputs:
      environment:
        description: 'Select the environment to deploy to'
        required: true
        default: 'development'
      branch:
        description: 'Branch to deploy from'
        required: true
        default: 'main'

env:
  SERVICE: backend
  REGION: us-central1

jobs:
  deploy:
    environment: ${{ (github.ref == 'refs/heads/development' && 'development') || (github.ref == 'refs/heads/main' && 'prod') }}
    permissions:
      contents: 'read'
      id-token: 'write'

    runs-on: ubuntu-latest
    steps:
      - name: Validate Environment Input
        run: |
          if [[ "${{ github.event.inputs.environment }}" != "development" && "${{ github.event.inputs.environment }}" != "prod" ]]; then
            echo "Invalid environment: ${{ github.event.inputs.environment }}. Must be 'development' or 'prod'."
            exit 1
          fi
      - name: Checkout
        uses: actions/checkout@v2

      - name: Google Auth
        id: auth
        uses: 'google-github-actions/auth@v0'
        with:
          credentials_json: ${{ secrets.GCP_CREDENTIALS }}
      - run: gcloud auth configure-docker
      - name: Build and Push Docker image
        run: |
          docker build -t gcr.io/${{ vars.GCP_PROJECT_ID }}/${{ env.SERVICE }} -f backend/Dockerfile .
          docker push gcr.io/${{ vars.GCP_PROJECT_ID }}/${{ env.SERVICE }}
      - name: Deploy to Cloud Run
        id: deploy
        uses: google-github-actions/deploy-cloudrun@v0
        with:
          service: ${{ env.SERVICE }}
          region: ${{ env.REGION }}
          image: gcr.io/${{ vars.GCP_PROJECT_ID }}/${{ env.SERVICE }}

      # If required, use the Cloud Run url output in later steps
      - name: Show Output
        run: echo ${{ steps.deploy.outputs.url }}