verify.yml

name: Charts Validation

on:
  pull_request:
    paths:
      - 'charts/**'

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Fetch history
        run: git fetch --prune --unshallow

      - name: Run Helm lint
        uses: helm/chart-testing-action@v2.6.1
        with:
          command: lint
          config: .github/verify-config.yaml

      - name: Set up Node.js (required for readme-generator)
        uses: actions/setup-node@v3
        with:
          node-version: '16'

      - name: Install readme-generator-for-helm
        run: npm install -g @bitnami/readme-generator-for-helm

      - name: Check Chart Version and Run README Generator
        shell: bash
        run: |
          errors=false

          # Loop through modified chart directories
          for dir in $(git diff --name-only origin/main | grep -o 'charts/[^/]*/' | sort -u); do
            chart_file="${dir}Chart.yaml"

            if [ -f "$chart_file" ]; then
              # Fetch current and main branch versions
              current_version=$(yq eval '.version' "$chart_file")
              main_version=$(git show origin/main:"$chart_file" | yq eval '.version' -)

              # Check if the version was incremented correctly
              if [ "$current_version" = "$main_version" ]; then
                echo "::error::Version in $chart_file needs to be updated. The current version in main is $main_version."
                echo "Please increment the version in $chart_file by updating the 'version' field to the next semantic version (e.g., 1.0.1 -> 1.0.2).\n"
                errors=true
              else
                # Extract major, minor, patch for validation
                IFS='.' read -r major minor patch <<< "$main_version"
                next_patch_version="$major.$minor.$((patch + 1))"
                next_minor_version="$major.$((minor + 1)).0"

                # Validate the updated version
                if [ "$current_version" = "$next_patch_version" ]; then
                  echo "Version in $chart_file is correctly incremented to $current_version (next patch version).\n"
                elif [ "$current_version" = "$next_minor_version" ]; then
                  echo "Version in $chart_file is correctly incremented to $current_version (next minor version).\n"
                else
                  echo "::error::Version in $chart_file is not a valid next version. The current version in main is $main_version."
                  echo "Expected the next version to be either $next_patch_version (patch increment) or $next_minor_version (minor increment)."
                  echo "Please update the version in $chart_file to one of these expected values.\n"
                  errors=true
                fi
              fi
            fi

            # Check and generate README
            if [ -f "${dir}values.yaml" ]; then
              echo "Generating README for $dir"
              if ! readme-generator -v "${dir}values.yaml" -r "${dir}README.md"; then
                echo "::error::README.md for $dir is outdated or an error occurred while generating it."
                echo "Please update README.md by installing readme-generator-for-helm and running:"
                echo "npm install -g @bitnami/readme-generator-for-helm"
                echo "readme-generator -v ${dir}values.yaml -r ${dir}README.md"
                errors=true
              else
                echo "README generation for $dir is in order."
              fi
            fi
          done

          # Fail the job if any errors were detected
          if [ "$errors" = true ]; then
            echo "Some checks failed. Please address the issues above."
            exit 1
          else
            echo "All validation checks passed."
          fi