# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

{{- if and .Values.webhook.enabled (not .Values.webhook.certManager.enabled) (not .Values.webhook.certificateSecret.external) }}
---
# ServiceAccount for CA bundle injection job
apiVersion: v1
kind: ServiceAccount
metadata:
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  namespace: {{ .Release.Namespace }}
  labels:
    app.kubernetes.io/component: webhook
    app.kubernetes.io/created-by: dynamo-operator
    app.kubernetes.io/part-of: dynamo-operator
  {{- include "dynamo-operator.labels" . | nindent 4 }}
  annotations:
    "helm.sh/hook": post-install,post-upgrade
    "helm.sh/hook-weight": "1"
    "helm.sh/hook-delete-policy": before-hook-creation
---
# Role to read the certificate secret
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  namespace: {{ .Release.Namespace }}
  labels:
    app.kubernetes.io/component: webhook
    app.kubernetes.io/created-by: dynamo-operator
    app.kubernetes.io/part-of: dynamo-operator
  {{- include "dynamo-operator.labels" . | nindent 4 }}
  annotations:
    "helm.sh/hook": post-install,post-upgrade
    "helm.sh/hook-weight": "1"
    "helm.sh/hook-delete-policy": before-hook-creation
rules:
- apiGroups: [""]
  resources: ["secrets"]
  resourceNames: ["{{ .Values.webhook.certificateSecret.name }}"]
  verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  namespace: {{ .Release.Namespace }}
  labels:
    app.kubernetes.io/component: webhook
    app.kubernetes.io/created-by: dynamo-operator
    app.kubernetes.io/part-of: dynamo-operator
  {{- include "dynamo-operator.labels" . | nindent 4 }}
  annotations:
    "helm.sh/hook": post-install,post-upgrade
    "helm.sh/hook-weight": "1"
    "helm.sh/hook-delete-policy": before-hook-creation
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
subjects:
- kind: ServiceAccount
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  namespace: {{ .Release.Namespace }}
---
# ClusterRole to patch ValidatingWebhookConfiguration
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  labels:
    app.kubernetes.io/component: webhook
    app.kubernetes.io/created-by: dynamo-operator
    app.kubernetes.io/part-of: dynamo-operator
  {{- include "dynamo-operator.labels" . | nindent 4 }}
  annotations:
    "helm.sh/hook": post-install,post-upgrade
    "helm.sh/hook-weight": "1"
    "helm.sh/hook-delete-policy": before-hook-creation
rules:
- apiGroups: ["admissionregistration.k8s.io"]
  resources: ["validatingwebhookconfigurations"]
  {{- if .Values.namespaceRestriction.enabled }}
  resourceNames: ["{{ include "dynamo-operator.fullname" . }}-validating-{{ .Release.Namespace }}"]
  {{- else }}
  resourceNames: ["{{ include "dynamo-operator.fullname" . }}-validating"]
  {{- end }}
  verbs: ["get", "patch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  labels:
    app.kubernetes.io/component: webhook
    app.kubernetes.io/created-by: dynamo-operator
    app.kubernetes.io/part-of: dynamo-operator
  {{- include "dynamo-operator.labels" . | nindent 4 }}
  annotations:
    "helm.sh/hook": post-install,post-upgrade
    "helm.sh/hook-weight": "1"
    "helm.sh/hook-delete-policy": before-hook-creation
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
subjects:
- kind: ServiceAccount
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
  namespace: {{ .Release.Namespace }}
---
# Job to inject CA bundle into ValidatingWebhookConfiguration
apiVersion: batch/v1
kind: Job
metadata:
  name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject-{{ .Release.Revision }}
  namespace: {{ .Release.Namespace }}
  labels:
    app.kubernetes.io/component: webhook
    app.kubernetes.io/created-by: dynamo-operator
    app.kubernetes.io/part-of: dynamo-operator
  {{- include "dynamo-operator.labels" . | nindent 4 }}
  annotations:
    "helm.sh/hook": post-install,post-upgrade
    "helm.sh/hook-weight": "2"
    "helm.sh/hook-delete-policy": before-hook-creation
spec:
  backoffLimit: 5
  template:
    metadata:
      name: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
      labels:
        app.kubernetes.io/component: webhook
        app.kubernetes.io/created-by: dynamo-operator
        app.kubernetes.io/part-of: dynamo-operator
      {{- include "dynamo-operator.labels" . | nindent 8 }}
    spec:
      serviceAccountName: {{ include "dynamo-operator.fullname" . }}-webhook-ca-inject
      restartPolicy: OnFailure
      containers:
      - name: ca-injector
        image: {{ .Values.webhook.certGenerator.image.repository }}:{{ .Values.webhook.certGenerator.image.tag }}
        imagePullPolicy: {{ .Values.webhook.certGenerator.image.pullPolicy }}
        env:
        - name: OPENSSL_CONF
          value: /tmp/openssl.cnf
        command:
        - /bin/bash
        - -c
        - |
          set -e

          echo "🔐 Injecting CA bundle into webhook configuration..."

          # Configuration
          SECRET_NAME="{{ .Values.webhook.certificateSecret.name }}"
          NAMESPACE="{{ .Release.Namespace }}"
          {{- if .Values.namespaceRestriction.enabled }}
          WEBHOOK_NAME="{{ include "dynamo-operator.fullname" . }}-validating-{{ .Release.Namespace }}"
          {{- else }}
          WEBHOOK_NAME="{{ include "dynamo-operator.fullname" . }}-validating"
          {{- end }}

          echo "⏳ Waiting for certificate secret to be available..."
          # Wait for secret (up to 5 minutes)
          for i in $(seq 1 60); do
            if kubectl get secret ${SECRET_NAME} -n ${NAMESPACE} >/dev/null 2>&1; then
              echo "✅ Secret found!"
              break
            fi
            if [ $i -eq 60 ]; then
              echo "❌ ERROR: Secret ${SECRET_NAME} not found after 5 minutes"
              exit 1
            fi
            echo "   Waiting for secret... ($i/60)"
            sleep 5
          done

          echo "📝 Extracting CA bundle from secret..."
          CA_BUNDLE=$(kubectl get secret ${SECRET_NAME} \
            -n ${NAMESPACE} \
            -o jsonpath='{.data.ca\.crt}')

          if [ -z "$CA_BUNDLE" ]; then
            echo "❌ ERROR: ca.crt not found in secret ${SECRET_NAME}"
            exit 1
          fi

          echo "📝 Patching ValidatingWebhookConfiguration..."
          # Patch all webhooks (DynamoComponentDeployment, DynamoGraphDeployment, DynamoModel, DynamoGraphDeploymentRequest)
          kubectl patch validatingwebhookconfiguration ${WEBHOOK_NAME} \
            --type='json' -p="[
              {
                \"op\": \"add\",
                \"path\": \"/webhooks/0/clientConfig/caBundle\",
                \"value\": \"${CA_BUNDLE}\"
              },
              {
                \"op\": \"add\",
                \"path\": \"/webhooks/1/clientConfig/caBundle\",
                \"value\": \"${CA_BUNDLE}\"
              },
              {
                \"op\": \"add\",
                \"path\": \"/webhooks/2/clientConfig/caBundle\",
                \"value\": \"${CA_BUNDLE}\"
              },
              {
                \"op\": \"add\",
                \"path\": \"/webhooks/3/clientConfig/caBundle\",
                \"value\": \"${CA_BUNDLE}\"
              }
            ]"

          echo "✅ CA bundle injected successfully!"
          echo "🎉 Webhook configuration complete!"
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
            - ALL
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1001
{{- end }}

