deploy.yml

name: Deploy to AWS App Runner

# Trigger this workflow on any push to the 'main' branch
on:
  push:
    branches:
      - master

jobs:
  # Job for deploying the backend service
  deploy-backend:
    name: Deploy Backend to AWS App Runner
    runs-on: ubuntu-latest  # Run on the latest version of Ubuntu

    steps:
    # Step 1: Checkout the code from the repository
    - name: Checkout code
      uses: actions/checkout@v3  # GitHub Action to checkout the code

    # Step 2: Set up AWS CLI with necessary credentials
    - name: Set up AWS CLI
      uses: aws-actions/configure-aws-credentials@v2  # GitHub Action to configure AWS credentials
      with:
        aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}          # AWS Access Key ID stored as a GitHub secret
        aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}  # AWS Secret Access Key stored as a GitHub secret
        aws-region: us-east-1                        # AWS Region stored as a GitHub secret

    # Step 3: Deploy the backend service to AWS App Runner
    - name: Deploy Backend
      run: |
        SERVICE_ARN=$(aws apprunner list-services --query "ServiceSummaryList[?ServiceName=='${{ secrets.APP_RUNNER_SERVICE_NAME_BACKEND }}'].ServiceArn | [0]" --output text)
    
        if [ -z "$SERVICE_ARN" ]; then
          echo "Error: Service ARN not found for service name ${{ secrets.APP_RUNNER_SERVICE_NAME_BACKEND }}."
          exit 1
        fi
    
        # Update the backend service in AWS App Runner
        aws apprunner update-service \
          --service-arn "$SERVICE_ARN" \
          --source-configuration "$(cat <<EOF
        {
          "CodeRepository": {
            "RepositoryUrl": "${{ secrets.REPOSITORY_URL }}",
            "SourceCodeVersion": {
              "Type": "BRANCH",
              "Value": "master"
            },
            "SourceDirectory": "linguaphoto"
          }
        }
        EOF
        )"
  # Job for deploying the frontend service
  deploy-frontend:
    name: Deploy Frontend to CloudFront
    runs-on: ubuntu-latest  # Run on the latest version of Ubuntu

    steps:
      # Step 1: Check out the repository
      - name: Check out repository
        uses: actions/checkout@v3

      # Step 2: Set up Node.js environment
      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          node-version: "20.10.0"
      # Step 3: Restore cache (Node modules and mypy cache)
      - name: Restore cache
        id: restore-cache
        uses: actions/cache/restore@v3
        with:
          path: 
            frontend/node_modules/
          key: deploy-${{ github.sha }}-${{ hashFiles('frontend/package-lock.json') }}-${{ hashFiles('linguaphoto/requirements.txt') }}
          restore-keys: |
            deploy-${{ github.sha }}-
            deploy-
      # Step 4: Install Node.js packages
      - name: Install Node packages
        working-directory: frontend
        run: npm install
      
      # Step 5: Build the frontend
      - name: Build frontend
        working-directory: frontend
        run: npm run build
      
      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: ${{ secrets.AWS_REGION }}
      # Step 6: Deploy to S3
      - name: Replace S3 bucket contents
        run: |
          aws s3 rm s3://${{ secrets.S3_BUCKET }} --recursive
          aws s3 cp frontend/build s3://${{ secrets.S3_BUCKET }} --recursive

      # Step 7: CloudFront
      - name: Invalidate CloudFront cache
        run: |
          aws cloudfront create-invalidation --distribution-id ${{ secrets.CLOUDFRONT_DISTRIBUTION_ID}} --paths "/*"

      # Step 8: Save cache (only on the master branch)
      - name: Save cache
        uses: actions/cache/save@v3
        if: github.ref == 'refs/heads/master'
        with:
          path: 
            frontend/node_modules/
          key: deploy-${{ github.sha }}-${{ hashFiles('frontend/package-lock.json') }}-${{ hashFiles('linguaphoto/requirements.txt') }}