build-and-publish-chart.yml

name: Manual Release Chart

# Manual trigger only
on:
  workflow_dispatch:
    inputs:
      version:
        description: 'Version to use for the release'
        required: false
        default: ''

jobs:
  build-and-publish-chart:
    environment: release
    permissions:
      contents: 'write'
      packages: 'write'
      id-token: write
      actions: 'read'
    runs-on: ubuntu-latest
    steps:

      # Step 1: Checkout and Setup
      - name: Checkout Code
        uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0

      - name: Set up Git
        run: |
          git config --local user.email "ops@cloudzero.com"
          git config --local user.name "Automated CZ Release"
      
      - name: Fetch All Branches
        run: git fetch --all

      # Step 2: Prepare Branches
      - name: Prepare Branches
        run: |
          git checkout develop
          git pull --rebase origin develop
          git checkout main
          git pull --rebase origin main
          git merge develop

      # Step 3: Helm Setup
      - name: Install Helm
        uses: azure/setup-helm@v3

      - name: Build Cloudzero Agent Dependencies
        run: helm dependency update charts/cloudzero-agent/

      - name: Package Cloudzero Agent Chart
        run: helm package charts/cloudzero-agent/ --destination .deploy

      # Step 4: Validate and Set Version
      - name: Validate Input Version
        run: |
          if [[ -z "${{ github.event.inputs.version }}" ]]; then
            echo "Version input is required."
            exit 1
          fi
          echo "NEW_VERSION=${{ github.event.inputs.version }}" >> $GITHUB_ENV

      - name: Update Chart Version
        run: |
          VERSION_LINE=$(awk '/version:/ && !done {print NR; done=1}' charts/cloudzero-agent/Chart.yaml)
          sed -i ''$VERSION_LINE's/.*/version: ${{ env.NEW_VERSION }}/' charts/cloudzero-agent/Chart.yaml

      - name: Validate Release Notes are Present
        run: |
          if [ ! -f "charts/cloudzero-agent/docs/releases/${{ env.NEW_VERSION }}.md" ]; then
            echo "Release notes for ${{ env.NEW_VERSION }} are missing. Please create a release notes file at charts/cloudzero-agent/docs/releases/${{ env.NEW_VERSION }}.md"
            exit 1
          fi

      # Step 5: Package and Commit Chart
      - name: Package Chart
        run: helm package charts/cloudzero-agent/ --destination .deploy

      - name: Commit updated Chart.yaml
        run: |
          git add .
          git commit -m "Update Chart.yaml to version ${{ env.NEW_VERSION }}"
          git push origin main
          COMMIT_HASH=$(git rev-parse HEAD)
          echo "COMMIT_HASH=${COMMIT_HASH}" >> $GITHUB_ENV
        continue-on-error: true

      # Step 7: Handle Artifacts and Update Pages
      - name: Upload Chart as Artifact
        uses: actions/upload-artifact@v4
        with:
          name: agent-chart
          path: .deploy/cloudzero-agent-${{ env.NEW_VERSION }}.tgz

      - name: Checkout GH Pages
        run: |
          git checkout -f gh-pages

      - name: Move release Tarball
        run: |
          cp .deploy/cloudzero-agent-${{ env.NEW_VERSION }}.tgz ./
          rm -fr .deploy

      - name: Update Index
        run: helm repo index --url https://cloudzero.github.io/cloudzero-charts .

      - name: Save Index in GH Pages
        run: |
          # copy the new chart and index.yaml
          git add cloudzero-agent-${{ env.NEW_VERSION }}.tgz index.yaml 
          git commit -m "Updating ${{ env.NEW_VERSION }} Index"
          git push origin gh-pages
        continue-on-error: true

      - name: Update Docs for GH Pages
        run: |
          # cleanup garbage files
          rm -fr .deploy charts/cloudzero-agent/charts
          git reset --hard 
          # now checkout docs from main
          git checkout main -- charts/cloudzero-agent/docs charts/cloudzero-agent/README.md README.md
          git add README.md charts/cloudzero-agent/docs charts/cloudzero-agent/README.md
          git commit -m "Update docs for ${{ env.NEW_VERSION }}"
          git push origin gh-pages
        continue-on-error: true

      # Step 8: Create GitHub Release
      - name: Create Release
        uses: softprops/action-gh-release@v2
        with:
          name: ${{ env.NEW_VERSION }}
          tag_name: ${{ env.NEW_VERSION }}
          files: cloudzero-agent-${{ env.NEW_VERSION }}.tgz
          make_latest: true
          target_commitish: ${{ env.COMMIT_HASH }}
          body_path: ${{ github.workspace }}/charts/cloudzero-agent/docs/releases/${{ env.NEW_VERSION }}.md