helmchart-publish.yml

name: Publish OCI charts

on:
  workflow_dispatch:
      inputs:
        index_path:
          description: 'OCI index-latest.yaml path, without registry hostname'
          required: true

env:
  REGISTRY: quay.io

jobs:
  helmchart-publish:
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: gh-pages
          fetch-depth: 0

      - name: Setup Oras
        uses: oras-project/setup-oras@v1

      - name: Download index-latest.yaml from workflow input
        #uses: mikefarah/yq@master
        run: |
          oras pull ${REGISTRY}/${{ inputs.index_path }}
          cat index-latest.yaml

      - name: Get index-latest.yaml chart name
        id: get_chart_name
        uses: mikefarah/yq@master
        with:
          cmd: yq '.entries | to_entries[0] | (.key)' index-latest.yaml

      - name: Get index-latest.yaml chart version
        id: get_chart_version
        uses: mikefarah/yq@master
        with:
          cmd: yq '.entries | to_entries[0] | (.value[0].version)' index-latest.yaml

      - name: Remove potential duplicate prior to merge
        uses: mikefarah/yq@master
        with:
          cmd: yq -i 'del(.entries.["${{ steps.get_chart_name.outputs.result }}"][] | select(.version == "${{ steps.get_chart_version.outputs.result }}"))' index.yaml

      - name: Merge index-latest.yaml into index.yaml
        uses: mikefarah/yq@master
        with:
          cmd: yq -i eval-all 'select(fi == 0) *++ select(fi == 1) | select(fi == 0)' index.yaml index-latest.yaml

      - name: Commit changes
        uses: stefanzweifel/git-auto-commit-action@v5
        with:
          commit_message: Publish chart ${{ steps.get_chart_name.outputs.result }} version ${{ steps.get_chart_version.outputs.result }}
          branch: gh-pages
          file_pattern: 'index.yaml'
          skip_fetch: true
          skip_checkout: true