lambda.yml

name: Upload Lambda to S3

on:
  push:
    paths:
      - 'lambda/**'

jobs:
  upload-lambda-code:
    runs-on: ubuntu-latest
    env:
      AWS_REGION: us-east-1
      BUCKET_NAME: image-processing-lambda-code-${{ secrets.AWS_ACCOUNT_ID }}
      ZIP_KEY: lambda/image-processing.zip

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

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v3
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: ${{ env.AWS_REGION }}

      - name: Ensure Lambda bucket exists
        run: |
          if aws s3api head-bucket --bucket "$BUCKET_NAME" 2>&1 | grep 'Not Found'; then
            echo "Creating S3 bucket: $BUCKET_NAME"
            aws s3 mb s3://$BUCKET_NAME --region $AWS_REGION
          else
            echo "Bucket already exists: $BUCKET_NAME"
          fi

      - name: Zip Lambda code
        run: |
          cd lambda
          zip -r ../lambda.zip .
          cd ..

      - name: Upload Lambda zip to S3
        run: aws s3 cp lambda.zip s3://$BUCKET_NAME/$ZIP_KEY

      - name: Clean up zip
        run: rm lambda.zip

      - name: Update Lambda function code if exists
        run: |
          if aws lambda get-function --function-name image-processing-worker; then
            echo "Lambda function exists. Updating..."
            aws lambda update-function-code \
              --function-name image-processing-worker \
              --s3-bucket "$BUCKET_NAME" \
              --s3-key "$ZIP_KEY"
          else
            echo "Lambda function does not exist. Skipping update."
          fi