#@ load("@ytt:data", "data")

---
apiVersion: v1
kind: Namespace
metadata:
  name: #@ data.values.namespace
  labels:
    name: #@ data.values.namespace
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: #@ data.values.app_name + "-service-account"
  namespace: #@ data.values.namespace
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: #@ data.values.app_name + "-config"
  namespace: #@ data.values.namespace
  labels:
    app: #@ data.values.app_name
data:
  #@yaml/text-templated-strings
  placeholder-name.yaml: |
    discovery:
      url: (@= data.values.discovery_url or "null" @)
    webhook:
      url: (@= data.values.webhook_url @)
      caBundle: (@= data.values.webhook_ca_bundle @)
---
#! TODO set up healthy, ready, etc. probes correctly for our deployment
#! TODO set the priority-critical-urgent on our deployment to ask kube to never let it die
#! TODO set resource minimums (e.g. 512MB RAM) on the deployment to make sure we get scheduled onto a reasonable node
apiVersion: apps/v1
kind: Deployment
metadata:
  name: #@ data.values.app_name + "-deployment"
  namespace: #@ data.values.namespace
  labels:
    app: #@ data.values.app_name
spec:
  replicas: 1 #! TODO more than one replica for high availability, and share the same serving certificate among them (maybe using client-go leader election)
  selector:
    matchLabels:
      app: #@ data.values.app_name
  template:
    metadata:
      labels:
        app: #@ data.values.app_name
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ""
    spec:
      serviceAccountName: #@ data.values.app_name + "-service-account"
      containers:
        - name: placeholder-name
          #@ if data.values.image_digest:
          image:  #@ data.values.image_repo + "@" + data.values.image_digest
          #@ else:
          image: #@ data.values.image_repo + ":" + data.values.image_tag
          #@ end
          imagePullPolicy: IfNotPresent
          command:
            - ./placeholder-name-server
          args:
            - --config=/etc/config/placeholder-name.yaml
            - --downward-api-path=/etc/podinfo
            - --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt
            - --cluster-signing-key-file=/etc/kubernetes/pki/ca.key
          volumeMounts:
            - name: config-volume
              mountPath: /etc/config
            - name: podinfo
              mountPath: /etc/podinfo
            - name: k8s-certs
              mountPath: /etc/kubernetes/pki
      volumes:
        - name: config-volume
          configMap:
            name: #@ data.values.app_name + "-config"
        - name: podinfo
          downwardAPI:
            items:
              - path: "labels"
                fieldRef:
                  fieldPath: metadata.labels
              - path: "namespace"
                fieldRef:
                  fieldPath: metadata.namespace
        - name: k8s-certs
          hostPath:
            path: /etc/kubernetes/pki
            type: DirectoryOrCreate
      #! "system-cluster-critical" cannot be used outside the kube-system namespace until Kubernetes >= 1.17,
      #! so we skip setting this for now (see https://github.com/kubernetes/kubernetes/issues/60596).
      #! priorityClassName: system-cluster-critical
      nodeSelector:
        node-role.kubernetes.io/master: ""
      tolerations:
      - key: CriticalAddonsOnly
        operator: Exists
      - effect: NoSchedule
        key: node-role.kubernetes.io/master
---
apiVersion: v1
kind: Service
metadata:
  name: placeholder-name-api #! the golang code assumes this specific name as part of the common name during cert generation
  namespace: #@ data.values.namespace
  labels:
    app: #@ data.values.app_name
spec:
  type: ClusterIP
  selector:
    app: #@ data.values.app_name
  ports:
    - protocol: TCP
      port: 443
      targetPort: 443
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
  name: v1alpha1.placeholder.suzerain-io.github.io
  labels:
    app: #@ data.values.app_name
spec:
  version: v1alpha1
  group: placeholder.suzerain-io.github.io
  groupPriorityMinimum: 2500 #! TODO what is the right value? https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#apiservicespec-v1beta1-apiregistration-k8s-io
  versionPriority: 10 #! TODO what is the right value? https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#apiservicespec-v1beta1-apiregistration-k8s-io
  #! caBundle: Do not include this key here. Starts out null, will be updated/owned by the golang code.
  service:
    name: placeholder-name-api
    namespace: #@ data.values.namespace
    port: 443