{{- /*
Copyright Broadcom, Inc. All Rights Reserved.
SPDX-License-Identifier: APACHE-2.0
*/}}

{{- if .Values.networkPolicy.enabled }}
kind: NetworkPolicy
apiVersion: {{ include "common.capabilities.networkPolicy.apiVersion" . }}
metadata:
  name: {{ template "common.names.fullname" . }}
  namespace: {{ include "common.names.namespace" . | quote }}
  labels: {{- include "common.labels.standard" (dict "customLabels" .Values.commonLabels "context" .) | nindent 4 }}
    app.kubernetes.io/component: keycloak
    app.kubernetes.io/part-of: keycloak
  {{- if .Values.commonAnnotations }}
  annotations: {{- include "common.tplvalues.render" (dict "value" .Values.commonAnnotations "context" .) | nindent 4 }}
  {{- end }}
spec:
  {{- $podLabels := include "common.tplvalues.merge" (dict "values" (list .Values.podLabels .Values.commonLabels) "context" .) }}
  podSelector:
    matchLabels: {{- include "common.labels.matchLabels" (dict "customLabels" $podLabels "context" .) | nindent 6 }}
      app.kubernetes.io/component: keycloak
      app.kubernetes.io/part-of: keycloak
  policyTypes:
    - Ingress
    - Egress
  {{- if .Values.networkPolicy.allowExternalEgress }}
  egress:
    - {}
  {{- else }}
  egress:
    - ports:
        # Allow dns resolution
        - port: 53
          protocol: UDP
        - port: 53
          protocol: TCP
        {{- range $port := .Values.networkPolicy.kubeAPIServerPorts }}
        - port: {{ $port }}
        {{- end }}
    # Allow connection to PostgreSQL
    - ports:
        - port: {{ include "keycloak.database.port" . | int }}
      {{- if .Values.postgresql.enabled }}
      to:
        - podSelector:
            matchLabels:
              app.kubernetes.io/name: postgresql
              app.kubernetes.io/instance: {{ .Release.Name }}              
      {{- end }}
    # Allow connection to other Keycloak nodes
    - ports:
        {{- /* Constant in code: https://github.com/keycloak/keycloak/blob/ce8e925c1ad9bf7a3180d1496e181aeea0ab5f8a/operator/src/main/java/org/keycloak/operator/Constants.java#L60 */}}
        - port: 7800
        - port: {{ .Values.containerPorts.http }}
        {{- if .Values.tls.enabled }}
        - port: {{ .Values.containerPorts.https }}
        {{- end }}
      to:
        - podSelector:
            matchLabels: {{- include "common.labels.matchLabels" (dict "customLabels" .Values.commonLabels "context" .) | nindent 14 }}
              app.kubernetes.io/component: keycloak
              app.kubernetes.io/part-of: keycloak
    {{- if .Values.networkPolicy.extraEgress }}
    {{- include "common.tplvalues.render" (dict "value" .Values.networkPolicy.extraEgress "context" .) | nindent 4 }}
    {{- end }}
  {{- end }}
  ingress:
    - ports:
        - port: {{ .Values.containerPorts.http }}
        {{- if .Values.tls.enabled }}
        - port: {{ .Values.containerPorts.https }}
        {{- end }}
        {{- if .Values.metrics.enabled }}
        - port: {{ .Values.containerPorts.management }}
        {{- end }}
        {{- /* Constant in code: https://github.com/keycloak/keycloak/blob/ce8e925c1ad9bf7a3180d1496e181aeea0ab5f8a/operator/src/main/java/org/keycloak/operator/Constants.java#L60 */}}
        - port: 7800
      {{- if not .Values.networkPolicy.allowExternal }}
      from:
        - podSelector:
            matchLabels: {{- include "common.labels.matchLabels" (dict "customLabels" .Values.commonLabels "context" .) | nindent 14 }}
        {{- if .Values.networkPolicy.addExternalClientAccess }}
        - podSelector:
            matchLabels:
              {{ template "common.names.fullname" . }}-client: "true"
        {{- end }}
        {{- if .Values.networkPolicy.ingressPodMatchLabels }}
        - podSelector:
            matchLabels: {{- include "common.tplvalues.render" (dict "value" .Values.networkPolicy.ingressPodMatchLabels "context" .) | nindent 14 }}
        {{- end }}
        {{- if .Values.networkPolicy.ingressNSMatchLabels }}
        - namespaceSelector:
            matchLabels:
              {{- range $key, $value := .Values.networkPolicy.ingressNSMatchLabels }}
              {{ $key | quote }}: {{ $value | quote }}
              {{- end }}
          {{- if .Values.networkPolicy.ingressNSPodMatchLabels }}
          podSelector:
            matchLabels:
              {{- range $key, $value := .Values.networkPolicy.ingressNSPodMatchLabels }}
              {{ $key | quote }}: {{ $value | quote }}
              {{- end }}
          {{- end }}
        {{- end }}
      {{- end }}
    {{- if .Values.networkPolicy.extraIngress }}
    {{- include "common.tplvalues.render" (dict "value" .Values.networkPolicy.extraIngress "context" .) | nindent 4 }}
    {{- end }}
{{- end }}