{{- if .Values.autoscaling.enabled }}
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: {{ include "aitbc-blockchain-node.fullname" . }}
  labels:
    {{- include "aitbc-blockchain-node.labels" . | nindent 4 }}
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: {{ include "aitbc-blockchain-node.fullname" . }}
  minReplicas: {{ .Values.autoscaling.minReplicas }}
  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
  metrics:
    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
    - type: Resource
      resource:
        name: cpu
        target:
          type: Utilization
          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
    {{- end }}
    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
    - type: Resource
      resource:
        name: memory
        target:
          type: Utilization
          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
    {{- end }}
    # Custom metrics for blockchain-specific scaling
    - type: External
      external:
        metric:
          name: blockchain_transaction_queue_depth
        target:
          type: AverageValue
          averageValue: "100"
    - type: External
      external:
        metric:
          name: blockchain_pending_transactions
        target:
          type: AverageValue
          averageValue: "500"
  behavior:
    scaleDown:
      stabilizationWindowSeconds: 600  # Longer stabilization for blockchain
      policies:
      - type: Percent
        value: 5
        periodSeconds: 60
    scaleUp:
      stabilizationWindowSeconds: 60
      policies:
      - type: Percent
        value: 50
        periodSeconds: 60
      - type: Pods
        value: 2
        periodSeconds: 60
      selectPolicy: Max
{{- end }}