name: PR Checks

on:
  pull_request:
    paths:
      - 'charts/**'
      - '.github/workflows/pr-checks.yaml'
      - 'ct.yaml'

permissions:
  contents: read
  pull-requests: read

jobs:
  lint-test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Set up Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.14.0

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.13'

      # Check 1: Verify helm-docs is up to date
      - name: Verify helm-docs up to date
        uses: losisin/helm-docs-github-action@v1
        with:
          fail-on-diff: true

      # Check 2: Run helm-unittest tests
      - name: Install helm-unittest plugin
        run: helm plugin install https://github.com/helm-unittest/helm-unittest.git

      - name: Run helm-unittest
        run: |
          helm unittest charts/jellyfin --with-subchart=false

      # Check 3: Helm lint (includes schema validation)
      - name: Helm lint
        run: helm lint charts/jellyfin

      # Check 4: Helm template validation
      - name: Helm template validation
        run: helm template test charts/jellyfin --debug > /dev/null

      # Check 5: Chart-testing (ct lint)
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2

      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct list-changed --target-branch master --config ct.yaml)
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> $GITHUB_OUTPUT
          fi

      - name: Run chart-testing (lint)
        if: steps.list-changed.outputs.changed == 'true'
        run: ct lint --config ct.yaml

      # Check 6: Kubernetes manifest validation with kubeconform
      - name: Install kubeconform
        run: |
          # renovate: datasource=github-releases depName=yannh/kubeconform
          VERSION=v0.6.7
          wget -qO- https://github.com/yannh/kubeconform/releases/download/${VERSION}/kubeconform-linux-amd64.tar.gz | tar xz
          sudo mv kubeconform /usr/local/bin/
          kubeconform -v

      - name: Validate Kubernetes manifests
        run: |
          # Validate against multiple Kubernetes versions (last 5 stable releases)
          for k8s_version in 1.30.0 1.31.0 1.32.0 1.33.0 1.34.0; do
            echo "Validating against Kubernetes $k8s_version"
            helm template test charts/jellyfin \
              | kubeconform -strict -summary -kubernetes-version $k8s_version
          done

      # Check 7: Markdown lint
      - name: Lint markdown files
        uses: DavidAnson/markdownlint-cli2-action@v18
        with:
          globs: 'charts/**/*.md'