charts/.github/workflows/charts-update-readme.yaml

name: "Charts: Update README"

on:
  workflow_call:
    inputs:
      modifiedCharts:
        required: true
        type: string
      isRenovatePR:
        required: true
        type: string
    outputs:
      commitHash:
        description: "The commit hash from the README.md upate"
        value: ${{ jobs.generate-readme.outputs.commitHash }}

jobs:
  validate-chart:
    name: Validate chart.yaml
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Check changelog annotations
        if: inputs.isRenovatePR != 'true'
        run: |
          CHARTS=(${{ inputs.modifiedCharts }})
          for i in "${CHARTS[@]}"
          do
              printf "Checking release notes for chart %s\n" "${i}"
              IFS='/' read -r -a chart_parts <<< "$i"
              ./.github/scripts/check-releasenotes.sh "charts/${chart_parts[0]}/${chart_parts[1]}"
              echo ""
          done          

  generate-readme:
    name: Generate chart README files
    runs-on: ubuntu-latest
    needs:
      - validate-chart
    outputs:
      commitHash: ${{ steps.store-commit-hash.outputs.commit_hash }}
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Install Kubernetes tools
        uses: yokawasa/action-setup-kube-tools@v0.8.0
        with:
          setup-tools: |
            yq            
          yq: "4.16.2"

      - name: Install helm-docs
        run: |
          wget -O /tmp/helm-docs.deb  https://github.com/k8s-at-home/helm-docs/releases/download/v0.1.1/helm-docs_0.1.1_Linux_x86_64.deb
          sudo dpkg -i /tmp/helm-docs.deb          

      - name: Annotate Charts.yaml for Renovate PR's
        if: inputs.isRenovatePR == 'true'
        run: |
          export DEFAULT_BRANCH=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
          CHARTS=(${{ inputs.modifiedCharts }})
          for i in "${CHARTS[@]}"
          do
              IFS='/' read -r -a chart_parts <<< "$i"
                ./.github/scripts/renovate-releasenotes.sh "charts/${chart_parts[0]}/${chart_parts[1]}"
              echo ""
          done          

      - name: Generate README for changed charts
        run: |
          CHARTS=(${{ inputs.modifiedCharts }})
          for i in "${CHARTS[@]}"
          do
              printf "Rendering README for chart %s\n" "${i}"
              IFS='/' read -r -a chart_parts <<< "$i"
              if [ -f "charts/${chart_parts[0]}"/"${chart_parts[1]}/Chart.yaml" ]; then
                ./.github/scripts/gen-helm-docs.sh "${chart_parts[0]}" "${chart_parts[1]}"
              fi
              echo ""
          done          

      - name: Create commit
        id: create-commit
        uses: stefanzweifel/git-auto-commit-action@v4
        with:
          file_pattern: charts/**/
          commit_message: Auto-update chart metadata and README
          commit_user_name: ${{ github.actor }}
          commit_user_email: ${{ github.actor }}@users.noreply.github.com

      - name: Store commit hash
        id: store-commit-hash
        run: |
          if [ "${{ steps.create-commit.outputs.changes_detected }}" == "true" ]; then
            echo '::set-output name=commit_hash::${{ steps.create-commit.outputs.commit_hash }}'
          else
            echo "::set-output name=commit_hash::${GITHUB_SHA}"
          fi