name: Helm Chart Tests

on:
  push:
    branches: [main]
    paths:
      - 'helm/**'
  pull_request:
    paths:
      - 'helm/**'

jobs:
  helm-test:
    runs-on: ubuntu-latest
    name: "Helm Lint & Template"

    steps:
      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Install Helm
        uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5.0.0
        with:
          version: latest

      - name: Helm lint (default values — expects failure, no backend enabled)
        run: |
          helm lint helm/taskchampion-sync-server \
            --strict 2>&1 || true

      - name: Template default values — must fail validation
        run: |
          if helm template test-release helm/taskchampion-sync-server 2>/dev/null; then
            echo "❌ Expected chart to fail validation (no backend enabled) but it succeeded"
            exit 1
          fi
          echo "✓ Correctly rejects chart with no backend enabled"

      - name: Template with SQLite values
        run: |
          helm template test-release helm/taskchampion-sync-server \
            -f helm/taskchampion-sync-server/examples/sqlite-values.yaml \
            --debug > /tmp/helm-sqlite.yaml

          echo "=== Generated resources (SQLite) ==="
          grep -E '^# Source:' /tmp/helm-sqlite.yaml

          # Verify key resources exist
          grep -q 'kind: Deployment' /tmp/helm-sqlite.yaml
          grep -q 'kind: Service' /tmp/helm-sqlite.yaml
          grep -q 'kind: Ingress' /tmp/helm-sqlite.yaml

          # Verify SQLite-specific rendering
          grep -q 'emptyDir' /tmp/helm-sqlite.yaml
          grep -q 'DATA_DIR' /tmp/helm-sqlite.yaml

          # Verify PostgreSQL-specific rendering is absent
          if grep -q 'initContainers' /tmp/helm-sqlite.yaml; then
            echo "❌ initContainers should not appear in SQLite mode"
            exit 1
          fi
          if grep -q 'CONNECTION' /tmp/helm-sqlite.yaml; then
            echo "❌ CONNECTION env var should not appear in SQLite mode"
            exit 1
          fi

          # Verify correct image tag (no -postgres suffix)
          grep -q 'image:.*taskchampion-sync-server:0.7.0' /tmp/helm-sqlite.yaml
          echo "✓ SQLite template generated successfully"

      - name: Template with PostgreSQL values
        run: |
          helm template test-release helm/taskchampion-sync-server \
            -f helm/taskchampion-sync-server/examples/postgres-values.yaml \
            --debug > /tmp/helm-postgres.yaml

          echo "=== Generated resources (PostgreSQL) ==="
          grep -E '^# Source:' /tmp/helm-postgres.yaml

          # Verify key resources exist
          grep -q 'kind: Deployment' /tmp/helm-postgres.yaml
          grep -q 'kind: Service' /tmp/helm-postgres.yaml
          grep -q 'kind: Secret' /tmp/helm-postgres.yaml

          # Verify PostgreSQL-specific rendering
          grep -q 'kind: HTTPRoute' /tmp/helm-postgres.yaml
          grep -q 'initContainers' /tmp/helm-postgres.yaml
          grep -q 'CONNECTION' /tmp/helm-postgres.yaml
          grep -q 'replicas: 3' /tmp/helm-postgres.yaml

          # Verify correct image tag (with -postgres suffix)
          grep -q 'image:.*taskchampion-sync-server-postgres:0.7.0' /tmp/helm-postgres.yaml

          # Verify SQLite-specific rendering is absent
          if grep -q 'DATA_DIR' /tmp/helm-postgres.yaml; then
            echo "❌ DATA_DIR env var should not appear in PostgreSQL mode"
            exit 1
          fi
          echo "✓ PostgreSQL template generated successfully"

      - name: Template with both backends enabled — must fail validation
        run: |
          if helm template test-release helm/taskchampion-sync-server \
            --set sqlite.enabled=true \
            --set postgres.enabled=true 2>/dev/null; then
            echo "❌ Expected chart to fail validation (both backends enabled) but it succeeded"
            exit 1
          fi
          echo "✓ Correctly rejects chart with both backends enabled"

      - name: Template with custom overrides
        run: |
          helm template test-release helm/taskchampion-sync-server \
            --set sqlite.enabled=true \
            --set postgres.enabled=false \
            --set nameOverride=custom-name \
            --set image.tag=latest \
            --debug > /tmp/helm-custom.yaml

          # Verify custom name override
          grep -q 'custom-name' /tmp/helm-custom.yaml
          grep -q 'custom-name-pvc' /tmp/helm-custom.yaml

          # Verify custom image tag
          grep -q 'image:.*taskchampion-sync-server:latest' /tmp/helm-custom.yaml
          echo "✓ Custom overrides template generated successfully"

      - name: Helm install dry-run (SQLite)
        run: |
          helm install test-release helm/taskchampion-sync-server \
            -f helm/taskchampion-sync-server/examples/sqlite-values.yaml \
            --dry-run 2>&1 | head -5
          echo "✓ Helm install dry-run (SQLite) succeeded"

  helm-kubeconform:
    runs-on: ubuntu-latest
    name: "Kubeconform Validation"
    needs: helm-test

    steps:
      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Install Helm
        uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5.0.0
        with:
          version: latest

      - name: Download kubeconform
        run: |
          wget -q -O /tmp/kubeconform.tar.gz \
            https://github.com/yannh/kubeconform/releases/download/v0.6.7/kubeconform-linux-amd64.tar.gz
          tar -xzf /tmp/kubeconform.tar.gz -C /usr/local/bin/ kubeconform
          kubeconform -v

      - name: Validate SQLite output against Kubernetes schemas
        run: |
          helm template test-release helm/taskchampion-sync-server \
            -f helm/taskchampion-sync-server/examples/sqlite-values.yaml > /tmp/helm-sqlite.yaml
          kubeconform -strict /tmp/helm-sqlite.yaml
          echo "✓ SQLite resources are valid Kubernetes manifests"

      - name: Validate PostgreSQL output against Kubernetes schemas
        run: |
          helm template test-release helm/taskchampion-sync-server \
            -f helm/taskchampion-sync-server/examples/postgres-values.yaml > /tmp/helm-postgres.yaml
          # Skip kubeconform on HTTPRoute since Gateway API CRDs aren't bundled
          kubeconform -strict -ignore-missing-schemas /tmp/helm-postgres.yaml
          echo "✓ PostgreSQL resources are valid Kubernetes manifests"