update-rhdh-version.yaml

name: Update RHDH Version

on:
  schedule:
    - cron: "0 9 * * 1" # Weekly on Monday at 9am UTC (after plugin sync)
  workflow_dispatch:
    inputs:
      target_version:
        description: "Specific version to update to (leave empty for latest)"
        required: false

jobs:
  check-update:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - uses: actions/checkout@v4

      - name: Determine Helm repo based on branch
        id: config
        run: |
          BRANCH="${GITHUB_REF_NAME}"

          if [[ "$BRANCH" == "main" ]]; then
            # Community chart for main branch
            echo "repo_name=rhdh-chart" >> $GITHUB_OUTPUT
            echo "repo_url=https://redhat-developer.github.io/rhdh-chart/" >> $GITHUB_OUTPUT
            echo "chart_name=backstage" >> $GITHUB_OUTPUT
          else
            # Official chart for release branches
            echo "repo_name=openshift-helm-charts" >> $GITHUB_OUTPUT
            echo "repo_url=https://charts.openshift.io" >> $GITHUB_OUTPUT
            echo "chart_name=redhat-developer-hub" >> $GITHUB_OUTPUT
          fi

          echo "branch=$BRANCH" >> $GITHUB_OUTPUT

      - name: Add Helm repo and get latest version
        id: helm
        run: |
          helm repo add ${{ steps.config.outputs.repo_name }} ${{ steps.config.outputs.repo_url }}
          helm repo update

          # Get latest version or use specified version
          if [[ -n "${{ github.event.inputs.target_version }}" ]]; then
            LATEST_VERSION="${{ github.event.inputs.target_version }}"
          else
            LATEST_VERSION=$(helm search repo ${{ steps.config.outputs.repo_name }}/${{ steps.config.outputs.chart_name }} --versions | awk 'NR==2 {print $2}')
          fi

          # Get current version from the ACTIVE (uncommented) line
          CURRENT_VERSION=$(grep '^HELM_CHART_VERSION=' env_variables.sh | cut -d'=' -f2)

          echo "current=$CURRENT_VERSION" >> $GITHUB_OUTPUT
          echo "latest=$LATEST_VERSION" >> $GITHUB_OUTPUT

          if [[ "$CURRENT_VERSION" != "$LATEST_VERSION" ]]; then
            echo "needs_update=true" >> $GITHUB_OUTPUT
          else
            echo "needs_update=false" >> $GITHUB_OUTPUT
          fi

      - name: Update version
        if: steps.helm.outputs.needs_update == 'true'
        run: |
          # Update the active (uncommented) HELM_CHART_VERSION line
          # Update env_variables.sh
          sed -i "s/^HELM_CHART_VERSION=.*/HELM_CHART_VERSION=${{ steps.helm.outputs.latest }}/" env_variables.sh

          # Update deploy/configmap.yaml
          sed -i "s/^  HELM_CHART_VERSION: .*/  HELM_CHART_VERSION: ${{ steps.helm.outputs.latest }}/" deploy/configmap.yaml
          echo "Updated HELM_CHART_VERSION from ${{ steps.helm.outputs.current }} to ${{ steps.helm.outputs.latest }}"

      - name: Sync dynamic plugins
        if: steps.helm.outputs.needs_update == 'true'
        run: |
          # Sync from the same branch in RHDH (main -> main, release-1.9 -> release-1.9)
          BRANCH="${GITHUB_REF_NAME}"
          echo "Syncing dynamic-plugins.default.yaml from RHDH branch: $BRANCH"

          curl -sfL "https://raw.githubusercontent.com/redhat-developer/rhdh/${BRANCH}/dynamic-plugins.default.yaml" \
            -o resources/rhdh/dynamic-plugins.default.yaml || {
              echo "ERROR: Could not fetch from branch $BRANCH"
              exit 1
            }

      - name: Generate ConfigMap
        if: steps.helm.outputs.needs_update == 'true'
        run: |
          cat > resources/rhdh/dynamic-plugins-configmap.yaml << 'CONFIGMAP_HEADER'
          # AUTO-GENERATED - Do not edit directly
          # Source: dynamic-plugins.default.yaml from upstream RHDH
          # To regenerate locally: ./scripts/generate-configmap.sh
          #
          # This ConfigMap is applied to the cluster and consumed by RHDH
          # for dynamic plugin configuration.
          kind: ConfigMap
          apiVersion: v1
          metadata:
            name: rhdh-dynamic-plugins
            labels:
              backstage.io/kubernetes-id: developer-hub
          data:
            dynamic-plugins.yaml: |
          CONFIGMAP_HEADER

          # Indent the YAML content (6 spaces for ConfigMap data block) and Remove leading spaces only from comment lines before 'plugins:'
          awk '
            /^[[:space:]]*plugins:/ { found=1 }
            !found && /^[[:space:]]*#/ { sub(/^[[:space:]]+/, "") }
            { print "    " $0 }
          ' resources/rhdh/dynamic-plugins.default.yaml >> resources/rhdh/dynamic-plugins-configmap.yaml

          echo "Generated ConfigMap at resources/rhdh/dynamic-plugins-configmap.yaml"

      - name: Create Pull Request
        if: steps.helm.outputs.needs_update == 'true'
        uses: peter-evans/create-pull-request@v5
        with:
          commit-message: "chore: update RHDH to version ${{ steps.helm.outputs.latest }}"
          title: "[Auto] Update RHDH to ${{ steps.helm.outputs.latest }}"
          body: |
            ## RHDH Version Update

            Updates Red Hat Developer Hub from **${{ steps.helm.outputs.current }}** to **${{ steps.helm.outputs.latest }}**

            **Chart Source:** `${{ steps.config.outputs.repo_name }}/${{ steps.config.outputs.chart_name }}`

            ### Changes
            - Updated `HELM_CHART_VERSION` in `env_variables.sh`
            - Updated `dynamic-plugins.default.yaml` (if available for this version)
            - Regenerated `dynamic-plugins-configmap.yaml`

            ### Review Checklist
            - [ ] Review RHDH release notes for breaking changes
            - [ ] Check if any scripts need updates for new plugin configurations
            - [ ] Test deployment locally

            [RHDH Release Notes](https://github.com/redhat-developer/rhdh/releases)
          branch: auto/update-rhdh-version
          labels: |
            automated
            dependencies
          delete-branch: true