deploy_cloudfront_function.yml

name: Deploy IG Routing Cloudfront function Workflow

on:
  push:

jobs:
  build:
    name: Deploy IG Routing Cloudfront function
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Use Node.js 16.x
        uses: actions/setup-node@v4
        with:
          node-version: 16
          cache: npm

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: arn:aws:iam::209248795938:role/SmartFormsReactAppDeployment
          aws-region: ap-southeast-2

      - name: Describe the SmartFormsIgRouting function to get current ETag
        id: describe_function
        run: |
          OUTPUT=$(aws cloudfront get-function --name SmartFormsIgRouting)
          ETag=$(echo $OUTPUT | jq -r '.ETag')
          echo "::set-output name=etag::$ETag"
        shell: bash

      - name: Update the SmartFormsIgRouting Function
        id: update_function
        run: |
          OUTPUT=$(aws cloudfront update-function \
            --name SmartFormsIgRouting \
            --if-match ${{ steps.describe_function.outputs.etag }} \
            --function-config "{\"Comment\":\"Manages routing within the Smart Forms IG\",\"Runtime\":\"cloudfront-js-2.0\"}" \
            --function-code fileb://./SmartFormsIgRouting.js)
          
          NEW_ETAG=$(echo $OUTPUT | jq -r '.ETag')
          echo "::set-output name=new_etag::$NEW_ETAG"
        shell: bash

      - name: Publish the SmartFormsIgRouting Function
        run: |
          aws cloudfront publish-function \
            --name SmartFormsIgRouting \
            --if-match ${{ steps.update_function.outputs.new_etag }}
        shell: bash

      - name: Log the new ETag
        run: |
          echo "New ETag after updating and publishing: ${{ steps.update_function.outputs.new_etag }}"
        shell: bash