name: Release Helm Chart to GitHub Pages
run-name: Release Helm Chart ${{ inputs.chart_version }}

# Triggered automatically when publish-docker.yml completes, or manually
# We wait for Docker publish because the smoke test pulls the Docker image
on:
  workflow_run:
    workflows: ["Publish Docker Images"]
    types: [completed]
  workflow_dispatch:
    inputs:
      chart_version:
        description: "Chart version (e.g., 4.28.0)"
        required: true

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    # Only run if workflow_dispatch OR if workflow_run completed successfully
    if: ${{ github.event_name == 'workflow_dispatch' || github.event.workflow_run.conclusion == 'success' }}
    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: Install helm-docs
        run: |
          cd /tmp
          wget https://github.com/norwoodj/helm-docs/releases/download/v1.14.2/helm-docs_1.14.2_Linux_x86_64.tar.gz
          tar -xzf helm-docs_1.14.2_Linux_x86_64.tar.gz
          sudo mv helm-docs /usr/local/bin/
          helm-docs --version

      - name: Generate chart documentation
        run: |
          cd deploy/helm/pulse
          helm-docs

          # Commit if README changed
          if ! git diff --quiet README.md; then
            git config user.name "$GITHUB_ACTOR"
            git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
            git add README.md
            git commit -m "Auto-update Helm chart documentation"
            git pull --rebase origin main
            git push origin main
          fi
          cd ../../..

      - name: Determine chart version
        id: version
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            # Manual dispatch - use input directly
            VERSION="${{ inputs.chart_version }}"
          else
            # workflow_run trigger - extract version from the triggering workflow
            RUN_ID="${{ github.event.workflow_run.id }}"
            echo "Extracting version from workflow run ${RUN_ID}..."
            
            WORKFLOW_DATA=$(gh api repos/${{ github.repository }}/actions/runs/${RUN_ID})
            TAG=$(echo "$WORKFLOW_DATA" | jq -r '.display_title' | grep -oP 'v?\d+\.\d+\.\d+(-[a-zA-Z]+\.\d+)?' || echo "")
            
            if [ -z "$TAG" ]; then
              echo "::error::Could not extract version from workflow_run"
              exit 1
            fi
            
            # Remove leading 'v' if present
            VERSION="${TAG#v}"
          fi
          
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
          echo "Chart version: $VERSION"

      - 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 Chart.yaml changed
          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 pull --rebase origin main
            git push origin main
          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: Smoke test with kind
        run: |
          # Install kind
          curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.20.0/kind-linux-amd64
          chmod +x ./kind
          sudo mv ./kind /usr/local/bin/kind

          # Create cluster
          kind create cluster --name pulse-test --wait 5m

          # Install chart
          helm install pulse deploy/helm/pulse \
            --set persistence.enabled=false \
            --set server.secretEnv.create=true \
            --set server.secretEnv.data.API_TOKENS=test-token \
            --wait --timeout 5m

          # Verify deployment
          kubectl wait --for=condition=ready pod -l app.kubernetes.io/name=pulse --timeout=180s || (kubectl describe pods -l app.kubernetes.io/name=pulse && exit 1)
          kubectl get pods -l app.kubernetes.io/name=pulse

          # Test upgrade
          helm upgrade pulse deploy/helm/pulse \
            --set persistence.enabled=false \
            --set server.secretEnv.create=true \
            --set server.secretEnv.data.API_TOKENS=test-token \
            --wait --timeout 5m

          # Cleanup
          kind delete cluster --name pulse-test

          echo "✓ Smoke test 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 }}"
          CR_MAKE_RELEASE_LATEST: false

      - name: Mark Helm chart release as pre-release (avoid latest override)
        env:
          GITHUB_TOKEN: ${{ github.token }}
        run: |
          TAG="helm-chart-${{ steps.version.outputs.version }}"
          gh release edit "$TAG" --prerelease --latest=false || echo "No helm chart release to edit for $TAG"