release.yaml

name: Release Chart

on:
  push:
    branches:
      - main

jobs:
  tag_release:
    runs-on: ubuntu-latest
    outputs:
      tag_release_outcome: ${{ steps.tag_release_output.outputs.tag_release_outcome }}
      chart_tag: ${{ steps.chart_tag_output.outputs.chart_tag }}
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Get chart.yaml tag
        run: |
          echo "chart_tag=$(grep '^version: ' ${GITHUB_WORKSPACE}/Chart.yaml | sed 's/version: //g')" >> $GITHUB_ENV

      - name: Check for tag
        run: |
          echo "repo_tag=$(git tag -l ${{ env.chart_tag }})" >> $GITHUB_ENV

      - name: Conditionally tag release
        id: tag_release
        if: env.chart_tag != env.repo_tag
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        uses: actions/create-release@v1
        with:
          tag_name: ${{ env.chart_tag }}
          release_name: ${{ env.chart_tag }}
          commitish: main
          body: "bump to ${{ env.chart_tag }}"
          draft: false
          prerelease: false

      - name: Set output "tag_release_outcome"
        id: tag_release_output
        run: |
          echo "::set-output name=tag_release_outcome::${{ steps.tag_release.outcome }}"

      - name: Set output "chart_tag"
        id: chart_tag_output
        run: |
          echo "::set-output name=chart_tag::${{ env.chart_tag }}"

  release_chart:
    needs: tag_release
    if: needs.tag_release.outputs.tag_release_outcome == 'success'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name blobbot-helm
          git config user.email blobbot-helm@github.com

      - name: Install Helm
        uses: azure/setup-helm@v1
        with:
          version: v3.7.2

      - name: Package & push; sync README
        env:
          pages_branch: gh-pages
          target_branch: main
        run: |
          OWNER_NAME=$(cut -d '/' -f 1 <<< "$GITHUB_REPOSITORY")
          REPO_NAME=$(cut -d '/' -f 2 <<< "$GITHUB_REPOSITORY")
          git checkout ${{ env.target_branch }}
          cp -v README.md ..
          cd ${GITHUB_WORKSPACE}/..
          helm --debug package ${REPO_NAME}
          cd ${REPO_NAME}
          git checkout ${{ env.pages_branch }}
          mv -v ../README.md .
          mv -v ../*.tgz .
          helm --debug repo index . --url https://${OWNER_NAME}.github.io/${REPO_NAME}
          git add .
          git commit -m "bump chart version to ${{ needs.tag_release.outputs.chart_tag }}"
          git push origin ${{ env.pages_branch }}