name: Release Helm Chart to GitHub Pages

on:
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      chart_version:
        description: "Chart version (e.g., 4.28.0)"
        required: true

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "$GITHUB_ACTOR"
          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"

      - name: Install Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.15.2

      - name: Determine chart version
        id: version
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            VERSION="${{ inputs.chart_version }}"
          else
            VERSION="${{ github.event.release.tag_name }}"
            VERSION="${VERSION#v}"
          fi
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"

      - name: Update Chart.yaml version
        run: |
          VERSION="${{ steps.version.outputs.version }}"
          sed -i "s/^version: .*/version: $VERSION/" deploy/helm/pulse/Chart.yaml
          sed -i "s/^appVersion: .*/appVersion: \"$VERSION\"/" deploy/helm/pulse/Chart.yaml

          # Commit if changed (for manual workflow runs)
          if ! git diff --quiet deploy/helm/pulse/Chart.yaml; then
            git config user.name "$GITHUB_ACTOR"
            git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
            git add deploy/helm/pulse/Chart.yaml
            git commit -m "Auto-update Helm chart version to $VERSION"
            git push
          fi

      - name: Validate Helm chart
        run: |
          # Strict linting
          helm lint deploy/helm/pulse --strict

          # Template validation with minimal values
          helm template pulse deploy/helm/pulse --set persistence.enabled=false > /dev/null

          # Template validation with common overrides
          helm template pulse deploy/helm/pulse \
            --set ingress.enabled=true \
            --set ingress.hosts[0].host=pulse.example.com \
            --set agent.enabled=true > /dev/null

          echo "✓ Chart validation passed"

      - name: Run chart-releaser
        uses: helm/chart-releaser-action@v1.6.0
        with:
          charts_dir: deploy/helm
          config: cr.yaml
          skip_existing: true
        env:
          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
          CR_RELEASE_NAME_TEMPLATE: "helm-chart-{{ .Version }}"