name: Validate manifests

on:
  push:
  pull_request:

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

      - name: Install tools
        run: |
          curl -sL https://github.com/yannh/kubeconform/releases/latest/download/kubeconform-linux-amd64.tar.gz \
            | tar xz -C /usr/local/bin
          curl -fsSL https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
          curl -fsSL https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64 \
            -o /usr/local/bin/yq
          chmod +x /usr/local/bin/yq

          # Traefik IngressRoute is a CRD, so kubeconform needs an extra schema source.
          mkdir -p .ci-schemas/traefik.io
          curl -fsSL https://raw.githubusercontent.com/datreeio/CRDs-catalog/main/traefik.io/ingressroute_v1alpha1.json \
            -o .ci-schemas/traefik.io/ingressroute_v1alpha1.json
          cp .ci-schemas/traefik.io/ingressroute_v1alpha1.json .ci-schemas/traefik.io/IngressRoute_v1alpha1.json
          cp .ci-schemas/traefik.io/ingressroute_v1alpha1.json .ci-schemas/traefik.io/IngressRoute.json
          cp .ci-schemas/traefik.io/ingressroute_v1alpha1.json .ci-schemas/traefik.io/ingressroute.json

          # ArgoCD ApplicationSet is also a CRD. It stays dormant until bootstrap
          # is enabled, but once enabled we validate it with an explicit schema.
          mkdir -p .ci-schemas/argoproj.io
          curl -fsSL https://raw.githubusercontent.com/datreeio/CRDs-catalog/main/argoproj.io/applicationset_v1alpha1.json \
            -o .ci-schemas/argoproj.io/applicationset_v1alpha1.json
          cp .ci-schemas/argoproj.io/applicationset_v1alpha1.json .ci-schemas/argoproj.io/ApplicationSet_v1alpha1.json
          cp .ci-schemas/argoproj.io/applicationset_v1alpha1.json .ci-schemas/argoproj.io/ApplicationSet.json
          cp .ci-schemas/argoproj.io/applicationset_v1alpha1.json .ci-schemas/argoproj.io/applicationset.json

      - name: Helm lint
        run: |
          found=0

          for parent in helm custom-charts; do
            [ -d "$parent" ] || continue

            for chart in "$parent"/*; do
              [ -d "$chart" ] || continue
              found=1
              echo "Linting $chart"
              helm lint "$chart"
            done
          done

          if [ "$found" -eq 0 ]; then
            echo "No Helm charts found"
          fi

      - name: kubeconform - raw YAML
        run: |
          bootstrap_enabled=false
          if [ -f bootstrap/config.yaml ] && grep -Eq '^[[:space:]]*enabled:[[:space:]]*true[[:space:]]*$' bootstrap/config.yaml; then
            bootstrap_enabled=true
          fi

          mapfile -t manifests < <(
            find . -type f -name '*.yaml' \
              ! -path './.gitea/*' \
              ! -name '*.enc.yaml' \
              ! -name '*.secret.yaml' \
              ! -name '*kustomization.yaml' \
              ! -path './bootstrap/config.yaml' \
              ! -path './bootstrap/repo.yaml' \
              | sort
          )

          if [ "$bootstrap_enabled" != "true" ]; then
            filtered=()
            for manifest in "${manifests[@]}"; do
              [ "$manifest" = "./bootstrap/applicationset.yaml" ] && continue
              filtered+=("$manifest")
            done
            manifests=("${filtered[@]}")
          fi

          if [ "${#manifests[@]}" -eq 0 ]; then
            echo "No manifests found"
            exit 0
          fi

          printf '%s\n' "${manifests[@]}" \
            | xargs kubeconform \
                -strict \
                -kubernetes-version 1.35.0 \
                -ignore-missing-schemas \
                -schema-location default \
                -schema-location '.ci-schemas/{{.Group}}/{{.ResourceKind}}{{.KindSuffix}}.json' \
                -schema-location '.ci-schemas/{{.Group}}/{{.ResourceKind}}_{{.ResourceAPIVersion}}.json' \
                -summary

      - name: Apply bootstrap ApplicationSet
        env:
          KUBECONFIG_B64: ${{ secrets.KUBECONFIG_B64 }}
        run: |
          if [ "${GITHUB_EVENT_NAME:-}" != "push" ] || [ "${GITHUB_REF:-}" != "refs/heads/main" ]; then
            echo "Skipping bootstrap apply: only push events on main may apply"
            exit 0
          fi

          if [ ! -f bootstrap/config.yaml ] || ! grep -Eq '^[[:space:]]*enabled:[[:space:]]*true[[:space:]]*$' bootstrap/config.yaml; then
            echo "Skipping bootstrap apply: bootstrap/config.yaml is not enabled"
            exit 0
          fi

          if [ -z "${KUBECONFIG_B64:-}" ]; then
            echo "KUBECONFIG_B64 secret is required to apply bootstrap/applicationset.yaml"
            exit 1
          fi

          curl -fsSL https://dl.k8s.io/release/$(curl -fsSL https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl \
            -o /usr/local/bin/kubectl
          chmod +x /usr/local/bin/kubectl

          mkdir -p "${HOME}/.kube"
          printf '%s' "$KUBECONFIG_B64" | base64 -d > "${HOME}/.kube/config"

          if [ "${GITHUB_EVENT_NAME:-}" == "push" ] || [ "${GITHUB_REF:-}" == "refs/heads/main" ]; then
            for _ov in manifest/overlays/*; do
              kubectl kustomize $_ov >/dev/null || exit 1
            done
          fi

          kubectl apply -f bootstrap/applicationset.yaml