{{- define "common.istio" }}
---
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: {{ .Values.common.fullname }}-cert
  namespace: istio-system
spec:
  secretName: {{ .Values.common.fullname }}-cert
  commonName: {{ first .Values.common.domains }}
  dnsNames:
    {{- range $d := .Values.common.domains }}
    - {{ $d }}
    {{- end }}
  issuerRef:
    name: {{ .Values.common.domainIssuer }}
    kind: ClusterIssuer
    group: cert-manager.io
...
---
apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
  name: {{ .Values.common.fullname }}-gateway
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 443
      name: https
      protocol: HTTPS
    tls:
      mode: SIMPLE
      credentialName: {{ .Values.common.fullname }}-cert
    hosts:
    {{- range $d := .Values.common.domains }}
    - {{ $d }}
    {{- end }}
...
---
apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: {{ .Values.common.fullname }}-gateway
spec:
  hosts:
  {{- range $d := .Values.common.domains }}
  - {{ $d }}
  {{- end }}
  gateways:
  - {{ .Values.common.fullname }}-gateway
  http:
  - match:
    - uri:
        prefix: /
    route:
    - destination:
        port:
          number: 80
        host: {{ .Values.common.fullname }}
...
{{- end }}