apiVersion: v1
kind: Service
metadata:
  name: adopt-a-street-couchdb
  labels:
    app: couchdb
spec:
  clusterIP: None  # Headless service for StatefulSet
  selector:
    app: couchdb
  ports:
    - port: 5984
      targetPort: 5984
      name: couchdb
    - port: 4369
      targetPort: 4369
      name: epmd


---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: adopt-a-street-couchdb
spec:
  serviceName: adopt-a-street-couchdb
  replicas: 1
  selector:
    matchLabels:
      app: couchdb
  template:
    metadata:
      labels:
        app: couchdb
    spec:
      # Place CouchDB on Pi 5 nodes (more RAM)
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: kubernetes.io/arch
                    operator: In
                    values:
                      - arm64  # Pi 5 architecture
      containers:
        - name: couchdb
          image: couchdb:3.3
          ports:
            - containerPort: 5984
              name: couchdb
            - containerPort: 4369
              name: epmd
          env:
            - name: COUCHDB_USER
              valueFrom:
                secretKeyRef:
                  name: adopt-a-street-secrets
                  key: COUCHDB_USER
            - name: COUCHDB_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: adopt-a-street-secrets
                  key: COUCHDB_PASSWORD
            - name: COUCHDB_SECRET
              valueFrom:
                secretKeyRef:
                  name: adopt-a-street-secrets
                  key: COUCHDB_SECRET
            - name: NODENAME
              value: couchdb@0.adopt-a-street-couchdb
            - name: ERL_FLAGS
              value: "+K true +A 4"
            - name: COUCHDB_SINGLE_NODE_ENABLED
              value: "true"
          resources:
            requests:
              memory: "512Mi"
              cpu: "250m"
            limits:
              memory: "2Gi"
              cpu: "1000m"
          volumeMounts:
            - name: couchdb-data
              mountPath: /opt/couchdb/data
          livenessProbe:
            httpGet:
              path: /_up
              port: 5984
            initialDelaySeconds: 30
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 3
          readinessProbe:
            httpGet:
              path: /_up
              port: 5984
            initialDelaySeconds: 5
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 3
          command:
            - sh
            - -c
            - |
              # Create config directory and copy configuration
              mkdir -p /opt/couchdb/etc/local.d
              echo "[chttpd]" > /opt/couchdb/etc/local.d/10-cluster.ini
              echo "bind_address = 0.0.0.0" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "port = 5984" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "[couchdb]" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "single_node = true" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "enable_cors = true" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "[cors]" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "origins = *" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "credentials = true" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "headers = accept, authorization, content-type, origin, referer, x-csrf-token" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "methods = GET, PUT, POST, HEAD, DELETE" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "max_age = 3600" >> /opt/couchdb/etc/local.d/10-cluster.ini
              # Add admin credentials
              echo "[admins]" >> /opt/couchdb/etc/local.d/10-cluster.ini
              echo "${COUCHDB_USER} = ${COUCHDB_PASSWORD}" >> /opt/couchdb/etc/local.d/10-cluster.ini
              # Start CouchDB
              exec /opt/couchdb/bin/couchdb

  volumeClaimTemplates:
    - metadata:
        name: couchdb-data
      spec:
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: 10Gi
        # Uncomment and set your storage class if needed
        # storageClassName: local-path