name: Validate Manifests

on:
  pull_request:
    branches: [main]

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install kubeconform
        run: |
          curl -sL https://github.com/yannh/kubeconform/releases/download/v0.6.7/kubeconform-linux-amd64.tar.gz \
            | tar xz -C /usr/local/bin
          chmod +x /usr/local/bin/kubeconform

      - name: Schema validation (kubeconform)
        run: |
          find . -name '*.yaml' -o -name '*.yml' \
            | grep -v '\.gitea/' \
            | sort \
            | xargs kubeconform \
                -strict \
                -ignore-missing-schemas \
                -kubernetes-version 1.30.0 \
                -summary

      - name: Install kubectl
        run: |
          K8S_VER=$(curl -sL https://dl.k8s.io/release/stable.txt)
          curl -sLO "https://dl.k8s.io/release/${K8S_VER}/bin/linux/amd64/kubectl"
          chmod +x kubectl && mv kubectl /usr/local/bin/kubectl

      - name: Server-side dry-run (CRD existence check)
        env:
          KUBECONFIG_DATA: ${{ secrets.KUBECONFIG }}
        run: |
          echo "$KUBECONFIG_DATA" | base64 -d > /tmp/kube.yaml
          # Apply all YAML files in sorted order — server-side dry-run rejects
          # any apiVersion/Kind whose CRD is not installed in the cluster.
          find . -name '*.yaml' -o -name '*.yml' \
            | grep -v '\.gitea/' \
            | sort \
            | xargs -I{} kubectl apply \
                --dry-run=server \
                --kubeconfig /tmp/kube.yaml \
                -f {} 2>&1 \
            | tee /tmp/dryrun.log
          rm -f /tmp/kube.yaml
          # Fail if any "no kind is registered" or "no matches for kind" errors
          if grep -qE "no kind is registered|no matches for kind|unknown field" /tmp/dryrun.log; then
            echo "❌ Dry-run found unknown resources or fields — manifests reference CRDs not installed in the cluster"
            exit 1
          fi
          echo "✅ All manifests passed server-side dry-run"