helm-charts/.github/workflows/charts-release-steps.yaml

---
name: "Charts: Release"

on:
  workflow_call:
    inputs:
      charts:
        description: >
          Json encoded list of Helm charts to release.
          Defaults to releasing everything.
        default: "[]"
        required: false
        type: string
      excludedChartsRelease:
        description: >
          Json encoded list of Helm charts to exclude from release.
        default: "[]"
        required: false
        type: string
      publishToGhPages:
        description: >
          Should the charts be published to GitHub Pages.
        default: true
        required: false
        type: boolean
      ghPagesBranch:
        description: >
          Target branch for GitHub Pages.
        default: "gh-pages"
        required: false
        type: string
      publishToOciRegistry:
        description: >
          Should the charts be published to an OCI registry.
        default: true
        required: false
        type: boolean
      ociRegistry:
        description: >
          Target OCI registry for Helm charts.
        default: "ghcr.io"
        required: false
        type: string
      helmVersion:
        description: >
          Helm version to use.
        default: "3.11.2"
        required: false
        type: string

jobs:
  report-changes:
    name: Report changes
    runs-on: ubuntu-22.04
    steps:
      - name: Report changes
        run: |
          echo "Charts to package: ${{ inputs.charts }}"

  package-charts:
    name: Package charts
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        charts: ${{ fromJSON(inputs.charts) }}
      fail-fast: false
    steps:
      - name: Checkout source branch
        if: ${{ !contains(fromJSON(inputs.excludedChartsRelease), matrix.charts) }}
        uses: actions/checkout@v4
        with:
          path: src
          fetch-depth: 0

      - name: Package Helm charts
        uses: ./src/.github/actions/charts-package
        if: ${{ !contains(fromJSON(inputs.excludedChartsRelease), matrix.charts) }}
        with:
          rootFolder: src/charts
          chartFolder: ${{ matrix.charts }}
          artifactPrefix: chart__
          helmVersion: ${{ inputs.helmVersion }}

  tag-charts:
    name: Tag charts
    runs-on: ubuntu-22.04
    needs:
      - package-charts
    strategy:
      matrix:
        charts: ${{ fromJSON(inputs.charts) }}
      fail-fast: false
    steps:
      - name: Checkout source branch
        if: ${{ !contains(fromJSON(inputs.excludedChartsRelease), matrix.charts) }}
        uses: actions/checkout@v4

      - name: Grab chart details
        id: chart-details
        shell: bash
        env:
          ROOT_DIR: charts
          CHART_DIR: "${{ matrix.charts }}"
        run: |
          PARENT_DIR=$(basename $(dirname "${ROOT_DIR}/${CHART_DIR}"))
          echo "name=$(yq '.name' ${ROOT_DIR}/${CHART_DIR}/Chart.yaml)" >> "$GITHUB_OUTPUT"
          echo "version=$(yq '.version' ${ROOT_DIR}/${CHART_DIR}/Chart.yaml)" >> "$GITHUB_OUTPUT"

      - name: Create tag
        uses: EndBug/latest-tag@latest
        with:
          ref: ${{ steps.chart-details.outputs.name }}-${{ steps.chart-details.outputs.version }}

  release-charts-to-github-pages:
    name: Release charts to GitHub Pages
    runs-on: ubuntu-22.04
    if: ${{ inputs.publishToGhPages }}
    needs:
      - package-charts
    steps:
      - name: Checkout source branch
        uses: actions/checkout@v4
        with:
          path: src

      - name: Checkout gh-pages branch
        uses: actions/checkout@v4
        with:
          token: ${{ github.token }}
          path: gh-pages
          ref: ${{ inputs.ghPagesBranch }}
          fetch-depth: 0

      - name: Prepare artifacts for release to GitHub Pages
        uses: ./src/.github/actions/charts-release-ghpages
        with:
          artifactPattern: "*"
          artifactPrefix: chart__
          targetFolder: gh-pages
          targetBranch: gh-pages

      - name: Publish changes to GitHub Pages
        uses: ./src/.github/actions/publish-folder-to-pages
        with:
          path: gh-pages/

  prepare-release-charts-to-oci:
    name: Prepare releasing charts to OCI registry
    runs-on: ubuntu-22.04
    if: ${{ inputs.publishToOciRegistry }}
    needs:
      - package-charts
    outputs:
      artifacts: ${{ steps.artifacts.outputs.artifacts }}
    steps:
      - name: List artifacts
        id: list
        uses: yakubique/list-artifacts@v1.1
        with:
          name: chart__*

      - name: Rewrite artifacts output
        id: artifacts
        shell: bash
        env:
          JQ_COMMAND: |-
            [.[] | {artifact_name: .name, chart_name: (.name | split("__")[-2]), chart_version: (.name | split("__")[-1]) }]
        run: |
          echo '${{ steps.list.outputs.result }}' | jq -c -r "$JQ_COMMAND" > artifacts
          echo "artifacts=$(cat artifacts)" >> "$GITHUB_OUTPUT"

  release-charts-to-oci:
    name: Release charts to OCI registry
    runs-on: ubuntu-22.04
    if: ${{ inputs.publishToOciRegistry && needs.prepare-release-charts-to-oci.outputs.artifacts != '[]' }}
    strategy:
      matrix:
        artifacts: ${{ fromJSON(needs.prepare-release-charts-to-oci.outputs.artifacts) }}
      fail-fast: false
    needs:
      - package-charts
      - prepare-release-charts-to-oci
    env:
      TARGET_REGISTRY: ghcr.io
    steps:
      - name: Download chart artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts
          pattern: ${{ matrix.artifacts.artifact_name }}

      - name: Checkout source branch
        uses: actions/checkout@v4
        with:
          path: src

      - name: Release chart to OCI registry
        uses: ./src/.github/actions/charts-release-oci
        with:
          workingDir: artifacts/${{ matrix.artifacts.artifact_name }}
          chartName: ${{ matrix.artifacts.chart_name }}
          chartVersion: ${{ matrix.artifacts.chart_version }}

  cleanup-charts-artifacts:
    name: Clean up artifacts
    runs-on: ubuntu-22.04
    needs:
      - package-charts
      - release-charts-to-github-pages
      - release-charts-to-oci
    if: ${{ always() && !contains(needs.*.result, 'failure') && !contains(needs.*.result, 'cancelled') }}
    steps:
    - name: Clean up artifact
      uses: joernott/rm-artifact@v1
      with:
        name: "*"
        useGlob: true
        failOnError: true