on-pr-helm-sync.yaml

name: Validate StorageCluster CRD and Helm Template Sync

on:
  pull_request:
    paths:
      - 'deploy/crds/**'  # Adjust the path to your actual CRD file location

jobs:
  check-crd-changes:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v3

      - name: Install jq
        run: sudo apt-get install -y jq

      - name: Check if StorageCluster CRD has changes
        id: crd_check
        run: |
          echo "Checking CRD changes..."
          if git diff --exit-code HEAD^ HEAD -- deploy/crds/; then
            echo "crd_changed=false" >> $GITHUB_ENV
          else
            echo "crd_changed=true" >> $GITHUB_ENV
          fi

      - name: Validate PR Description for Helm Link
        id: validate_pr_description
        run: |
          echo "Extracting PR body..."
          PR_BODY=$(jq -r '.pull_request.body' "$GITHUB_EVENT_PATH")
          echo "PR_BODY: $PR_BODY"
          
          # Extract the HELM_PR_LINK value
          HELM_PR_LINK=$(echo "$PR_BODY" | grep -oP 'HELM_PR_LINK[[:space:]]*=[[:space:]]*.*' | awk -F '=' '{print $2}' | xargs)
          echo "HELM_PR_LINK: '$HELM_PR_LINK'"

          if [[ -z "$HELM_PR_LINK" ]]; then
            echo "Error: HELM_PR_LINK is missing in the description."
            exit 1
          elif [[ "$HELM_PR_LINK" == "NOT_NEEDED" ]]; then
            echo "helm_check=skipped" >> $GITHUB_ENV
          else
            echo "helm_pr_link=true" >> $GITHUB_ENV
            echo "helm_pr_link_url=$HELM_PR_LINK" >> $GITHUB_ENV
          fi

      - name: Extract Branch Name from Helm PR Link
        id: extract_branch
        if: env.helm_pr_link == 'true'
        run: |        
            # Extract the PR number from the HELM_PR_LINK URL
            PR_NUMBER=$(echo "${{ env.helm_pr_link_url }}" | grep -o '[0-9]\+')
            echo "PR_NUMBER: $PR_NUMBER"
            
            # Check if PR_NUMBER extraction was successful
            if [ -z "$PR_NUMBER" ]; then
              echo "Error: PR_NUMBER could not be extracted."
              exit 1
            fi
        
            # Fetch the branch name using the GitHub API
            HELM_BRANCH=$(curl -s "https://api.github.com/repos/portworx/helm/pulls/$PR_NUMBER" | jq -r '.head.ref')
            echo "HELM_BRANCH: $HELM_BRANCH"
            
            # Check if HELM_BRANCH was successfully extracted
            if [ -z "$HELM_BRANCH" ]; then
              echo "Error: Failed to extract the branch name from the Helm PR."
              exit 1
            else
              echo "helm_branch=$HELM_BRANCH" >> $GITHUB_ENV
            fi

      - name: Checkout Helm Repo
        if: env.crd_changed == 'true' && env.helm_pr_link == 'true'
        uses: actions/checkout@v3
        with:
          repository: portworx/helm  # Correct format
          ref: ${{ env.helm_branch }}  # Use the extracted Helm PR branch

      - name: Verify Helm Template Changes
        if: env.crd_changed == 'true' && env.helm_pr_link == 'true'
        run: |
          echo "Checking Helm template changes..."
          if git diff --exit-code HEAD^ HEAD -- charts/portworx/templates/storage-cluster.yaml; then
            echo "Error: No changes detected in Helm storagecluster template."
            exit 1
          else
            echo "Helm storagecluster template changes detected."
          fi

      - name: Final Status
        run: echo "Validation completed successfully."