apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{ include "postgresql.fullname" . }}
  labels:
    {{- include "postgresql.labels" . | nindent 4 }}
spec:
  replicas: 1
  serviceName: {{ include "postgresql.fullname" . }}-headless
  selector:
    matchLabels:
      {{- include "postgresql.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      {{- with .Values.podAnnotations }}
      annotations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      labels:
        {{- include "postgresql.selectorLabels" . | nindent 8 }}
        {{- with .Values.podLabels }}
        {{- toYaml . | nindent 8 }}
        {{- end }}
    spec:
      {{- with .Values.imagePullSecrets }}
      imagePullSecrets:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      serviceAccountName: {{ include "postgresql.serviceAccountName" . }}
      securityContext:
        {{- toYaml .Values.podSecurityContext | nindent 8 }}
      containers:
        - name: {{ .Chart.Name }}
          securityContext:
            {{- toYaml .Values.securityContext | nindent 12 }}
          image: "{{ .Values.image.registry }}/{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          env:
            - name: "POSTGRES_PASSWORD"
              value: {{ .Values.postgres.password | quote }}
            - name: "POSTGRES_USER"
              value: {{ .Values.postgres.user | quote }}
            - name: "PGPORT"
              value: {{ .Values.service.port | quote }}
            - name: "PGDATA"
              value: "/var/lib/postgresql/data"
          ports:
            - name: postgresql
              containerPort: {{ .Values.service.port }}
              protocol: TCP
          livenessProbe:
            exec:
              command:
                - /bin/sh
                - -c
                - exec pg_isready -U {{ .Values.postgres.user | quote }} -h 127.0.0.1 -p {{ .Values.service.port }}
          readinessProbe:
            exec:
              command:
                - /bin/sh
                - -c
                - exec pg_isready -U {{ .Values.postgres.user | quote }} -h 127.0.0.1 -p {{ .Values.service.port }}
          resources:
            {{- toYaml .Values.resources | nindent 12 }}
          volumeMounts:
            - name: "data"
              mountPath: "/var/lib/postgresql/data"
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      volumes:
        - name: "data"
          {{- if .Values.persistence.hostPath }}
          hostPath:
            type: Directory
            path: {{ .Values.persistence.hostPath | quote }}
          {{- else if .Values.persistence.enabled }}
          persistentVolumeClaim:
            {{ if .Values.persistence.existingClaim }}
            claimName: {{ .Values.persistence.existingClaim }}
            {{- else }}
            claimName: {{ include "postgresql.fullname" . }}-data
            {{- end }}
          {{- else }}
          emptyDir: {}
          {{- end }}
  {{- if and .Values.persistence.enabled (not .Values.persistence.hostPath) (not .Values.persistence.existingClaim) }}
  volumeClaimTemplates:
    - metadata:
        name: data
        labels:
          {{- include "postgresql.labels" . | nindent 8 }}
        {{- with .Values.persistence.annotations }}
        annotations:
          {{ toYaml . | indent 8 }}
        {{- end }}
      spec:
        accessModes:
          - {{ .Values.persistence.accessMode | quote }}
        resources:
          requests:
            storage: {{ .Values.persistence.size | quote }}
        {{- with .Values.persistence.storageClass }}
        {{-  if (eq "-" .) }}
        storageClassName: ""
        {{-  else }}
        storageClassName: {{ . | quote }}
        {{-  end }}
        {{- end }}
  {{- end }}