---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: bookwyrm-worker
  namespace: bookwyrm-application
  labels:
    app: bookwyrm
    component: worker
spec:
  replicas: 1
  selector:
    matchLabels:
      app: bookwyrm
      component: worker
  template:
    metadata:
      labels:
        app: bookwyrm
        component: worker
    spec:
      securityContext:
        runAsNonRoot: true
        runAsUser: 1000
        runAsGroup: 1000
        fsGroup: 1000
        seccompProfile:
          type: RuntimeDefault
      # Init container for Redis readiness only
      initContainers:
      - name: wait-for-redis
        image: <YOUR_REGISTRY_URL>/library/bookwyrm-worker:latest
        command: ["/bin/bash", "-c"]
        args:
        - |
          echo "Waiting for Redis..."
          max_attempts=30
          attempt=1
          while [ $attempt -le $max_attempts ]; do
            if python -c "
          import redis
          import os
          try:
              broker_url = os.environ.get('REDIS_BROKER_URL', 'redis://localhost:6379/0')
              r_broker = redis.from_url(broker_url)
              r_broker.ping()
              
              activity_url = os.environ.get('REDIS_ACTIVITY_URL', 'redis://localhost:6379/1')
              r_activity = redis.from_url(activity_url)
              r_activity.ping()
              
              exit(0)
          except Exception as e:
              exit(1)
          " >/dev/null 2>&1; then
              echo "Redis is ready!"
              exit 0
            fi
            echo "Redis not ready (attempt $attempt/$max_attempts), waiting..."
            sleep 2
            attempt=$((attempt + 1))
          done
          echo "Redis failed to become ready after $max_attempts attempts"
          exit 1
        envFrom:
        - configMapRef:
            name: bookwyrm-config
        - secretRef:
            name: bookwyrm-secrets
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop: ["ALL"]
          readOnlyRootFilesystem: false
          runAsNonRoot: true
          runAsUser: 1000
      containers:
      - name: bookwyrm-worker
        image: <YOUR_REGISTRY_URL>/library/bookwyrm-worker:latest
        imagePullPolicy: Always
        env:
        - name: CONTAINER_TYPE
          value: "worker"
        - name: DJANGO_SETTINGS_MODULE
          value: "bookwyrm.settings"
        - name: POD_NAME
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        envFrom:
        - configMapRef:
            name: bookwyrm-config
        - secretRef:
            name: bookwyrm-secrets
        resources:
          requests:
            cpu: 500m
            memory: 1Gi
          limits:
            cpu: 2000m  # Allow internal scaling like PieFed (concurrency=2 can burst)
            memory: 3Gi  # Match PieFed pattern for multiple internal workers
        volumeMounts:
        - name: app-storage
          mountPath: /app/images
          subPath: images
        - name: app-storage
          mountPath: /app/static
          subPath: static
        - name: app-storage
          mountPath: /app/exports
          subPath: exports
        - name: backups-storage
          mountPath: /backups
        - name: cache-storage
          mountPath: /tmp
        livenessProbe:
          exec:
            command:
            - /bin/bash
            - -c
            - "python -c \"import redis,os; r=redis.from_url(os.environ['REDIS_BROKER_URL']); r.ping()\""
          initialDelaySeconds: 60
          periodSeconds: 60
          timeoutSeconds: 10
          failureThreshold: 3
        readinessProbe:
          exec:
            command:
            - python
            - -c
            - "import redis,os; r=redis.from_url(os.environ['REDIS_BROKER_URL']); r.ping(); print('Worker ready')"
          initialDelaySeconds: 30
          periodSeconds: 30
          timeoutSeconds: 10
          failureThreshold: 3
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
            - ALL
          readOnlyRootFilesystem: false
          runAsNonRoot: true
          runAsUser: 1000
      volumes:
      - name: app-storage
        persistentVolumeClaim:
          claimName: bookwyrm-app-storage
      - name: cache-storage
        persistentVolumeClaim:
          claimName: bookwyrm-cache-storage
      - name: backups-storage
        persistentVolumeClaim:
          claimName: bookwyrm-backups
      nodeSelector:
        kubernetes.io/arch: arm64
      tolerations:
      - effect: NoSchedule
        key: node-role.kubernetes.io/control-plane
        operator: Exists

---
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: bookwyrm-worker-hpa
  namespace: bookwyrm-application
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: bookwyrm-worker
  minReplicas: 1  # Always keep workers running for background tasks
  maxReplicas: 2  # Minimal horizontal scaling - workers scale internally
  metrics:
  - type: Resource
    resource:
      name: cpu
      target:
        type: Utilization
        averageUtilization: 375
  - type: Resource
    resource:
      name: memory
      target:
        type: Utilization
        averageUtilization: 250
  behavior:
    scaleDown:
      stabilizationWindowSeconds: 300
      policies:
      - type: Percent
        value: 50
        periodSeconds: 60
    scaleUp:
      stabilizationWindowSeconds: 60
      policies:
      - type: Percent
        value: 100
        periodSeconds: 60