@clduab11/gemini-flow/src/agentspace/core/EnhancedMemoryArchitecture.ts

Revolutionary AI agent swarm coordination platform with Google Services integration, multimedia processing, and production-ready monitoring. Features 8 Google AI services, quantum computing capabilities, and enterprise-grade security.

/**
 * Enhanced Memory Architecture for AgentSpace
 *
 * Integrates with existing distributed memory system and extends it with:
 * - Spatial memory nodes with location-aware storage
 * - Mem0 MCP integration for knowledge graphs
 * - Enhanced CRDT synchronization
 * - Spatial context-aware memory retrieval
 * - Memory analytics and optimization
 */

import { EventEmitter } from "events";
import { Logger } from "../../utils/logger.js";
import {
  DistributedMemoryManager,
  MemoryOperation,
  MemoryDelta,
} from "../../protocols/a2a/memory/distributed-memory-manager.js";
import { VectorClock } from "../../protocols/a2a/memory/vector-clocks.js";
import {
  SpatialMemoryNode,
  MemoryMetadata,
  SpatialContext,
  ProximityIndex,
  KnowledgeLink,
  PersistenceConfig,
  Vector3D,
  EnvironmentalFactor,
  TemporalContext,
  ProximityNeighbor,
} from "../types/AgentSpaceTypes.js";

export interface EnhancedMemoryConfig {
  spatialIndexingEnabled: boolean;
  knowledgeGraphEnabled: boolean;
  mem0Integration: boolean;
  compressionEnabled: boolean;
  spatialRadius: number;
  maxMemoryNodes: number;
  persistenceLevel: "volatile" | "session" | "persistent" | "archival";
  analyticsEnabled: boolean;
}

export interface MemoryQuery {
  type: "spatial" | "semantic" | "temporal" | "knowledge_graph" | "full_text";
  parameters: MemoryQueryParameters;
  filters?: MemoryFilter[];
  limit?: number;
  offset?: number;
}

export interface MemoryQueryParameters {
  location?: Vector3D;
  radius?: number;
  semantic?: string;
  timeRange?: { start: Date; end: Date };
  agentId?: string;
  memoryTypes?: string[];
  keywords?: string[];
  knowledgePattern?: string;
}

export interface MemoryFilter {
  field: string;
  operator: "equals" | "contains" | "greater_than" | "less_than" | "in_range";
  value: any;
}

export interface MemoryInsight {
  type: "pattern" | "anomaly" | "correlation" | "prediction";
  description: string;
  confidence: number;
  data: any;
  timestamp: Date;
  relevantNodes: string[];
}

export interface MemoryAnalytics {
  totalNodes: number;
  spatialDistribution: SpatialDistribution;
  memoryTypes: { [type: string]: number };
  knowledgeConnectivity: ConnectivityMetrics;
  temporalPatterns: TemporalPattern[];
  insights: MemoryInsight[];
}

export interface SpatialDistribution {
  hotspots: { location: Vector3D; density: number }[];
  coverage: number;
  clustering: number;
}

export interface ConnectivityMetrics {
  averageConnections: number;
  networkDensity: number;
  stronglyConnectedComponents: number;
  isolatedNodes: number;
}

export interface TemporalPattern {
  pattern: string;
  frequency: number;
  timeOfDay?: string;
  confidence: number;
}

export interface Mem0Integration {
  enabled: boolean;
  endpoint?: string;
  apiKey?: string;
  namespace?: string;
}

export class EnhancedMemoryArchitecture extends EventEmitter {
  private logger: Logger;
  private config: EnhancedMemoryConfig;
  private baseMemoryManager: DistributedMemoryManager;
  private spatialMemoryNodes: Map<string, SpatialMemoryNode> = new Map();
  private spatialIndex: Map<string, Set<string>> = new Map(); // Grid -> Node IDs
  private knowledgeGraph: Map<string, Set<KnowledgeLink>> = new Map();
  private proximityIndex: Map<string, ProximityIndex> = new Map();
  private temporalIndex: Map<string, SpatialMemoryNode[]> = new Map(); // Time bucket -> Nodes
  private analyticsCache: {
    analytics: MemoryAnalytics | null;
    lastUpdate: Date;
  } = {
    analytics: null,
    lastUpdate: new Date(0),
  };

  // Performance metrics
  private metrics = {
    memoryOperations: 0,
    spatialQueries: 0,
    knowledgeTraversals: 0,
    compressionSavings: 0,
    averageQueryTime: 0,
    cacheHitRate: 0,
    indexUpdates: 0,
  };

  constructor(
    config: EnhancedMemoryConfig,
    baseMemoryManager: DistributedMemoryManager,
  ) {
    super();
    this.logger = new Logger("EnhancedMemoryArchitecture");
    this.config = config;
    this.baseMemoryManager = baseMemoryManager;

    this.initializeEnhancedFeatures();
    this.setupBaseManagerIntegration();

    this.logger.info("Enhanced Memory Architecture initialized", {
      spatialIndexing: config.spatialIndexingEnabled,
      knowledgeGraph: config.knowledgeGraphEnabled,
      mem0Integration: config.mem0Integration,
    });
  }

  /**
   * Store a spatial memory node
   */
  async storeMemoryNode(
    node: Omit<SpatialMemoryNode, "id" | "vectorClock">,
  ): Promise<string> {
    const nodeId = `node_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
    const vectorClock = new VectorClock(node.agentId);

    const spatialNode: SpatialMemoryNode = {
      id: nodeId,
      vectorClock: vectorClock.increment(),
      ...node,
    };

    // Store in spatial memory
    this.spatialMemoryNodes.set(nodeId, spatialNode);

    // Update spatial index
    if (this.config.spatialIndexingEnabled) {
      this.updateSpatialIndex(spatialNode);
    }

    // Update knowledge graph
    if (
      this.config.knowledgeGraphEnabled &&
      spatialNode.knowledgeLinks.length > 0
    ) {
      this.updateKnowledgeGraph(spatialNode);
    }

    // Update proximity index
    await this.updateProximityIndex(spatialNode);

    // Update temporal index
    this.updateTemporalIndex(spatialNode);

    // Store in base distributed memory system
    const memoryOperation: MemoryOperation = {
      type: "set",
      key: `spatial:${nodeId}`,
      value: spatialNode,
      vectorClock: spatialNode.vectorClock,
      metadata: {
        priority: spatialNode.metadata.priority,
        ttl: spatialNode.metadata.expirationDate?.getTime(),
        namespace: "agentspace",
        sourceAgent: spatialNode.agentId,
      },
    };

    await this.propagateToDistributedMemory(memoryOperation);

    // Integrate with Mem0 if enabled
    if (this.config.mem0Integration) {
      await this.integrateWithMem0(spatialNode);
    }

    this.metrics.memoryOperations++;

    this.logger.debug("Memory node stored", {
      nodeId,
      agentId: spatialNode.agentId,
      location: spatialNode.location,
      memoryType: spatialNode.memoryType,
    });

    this.emit("memory_node_stored", spatialNode);
    return nodeId;
  }

  /**
   * Retrieve memory nodes by spatial query
   */
  async queryMemoryBySpatialProximity(
    location: Vector3D,
    radius: number,
    memoryTypes?: string[],
    limit: number = 50,
  ): Promise<SpatialMemoryNode[]> {
    const startTime = Date.now();

    try {
      const candidateNodes = this.getSpatialCandidates(location, radius);
      const results: SpatialMemoryNode[] = [];

      for (const nodeId of candidateNodes) {
        const node = this.spatialMemoryNodes.get(nodeId);
        if (!node) continue;

        const distance = this.calculateDistance(location, node.location);
        if (distance <= radius) {
          if (!memoryTypes || memoryTypes.includes(node.memoryType)) {
            results.push(node);
          }
        }
      }

      // Sort by distance and limit
      results.sort(
        (a, b) =>
          this.calculateDistance(location, a.location) -
          this.calculateDistance(location, b.location),
      );

      const finalResults = results.slice(0, limit);

      // Update metrics
      this.updateQueryMetrics(startTime);
      this.metrics.spatialQueries++;

      return finalResults;
    } catch (error) {
      this.logger.error("Spatial memory query failed", {
        location,
        radius,
        error: error.message,
      });
      throw error;
    }
  }

  /**
   * Query memory using knowledge graph traversal
   */
  async queryMemoryByKnowledgeGraph(
    startNodeId: string,
    traversalDepth: number = 2,
    linkTypes?: string[],
    limit: number = 100,
  ): Promise<{ nodes: SpatialMemoryNode[]; paths: string[][] }> {
    if (!this.config.knowledgeGraphEnabled) {
      throw new Error("Knowledge graph is not enabled");
    }

    const startTime = Date.now();
    const visited = new Set<string>();
    const results = new Map<string, SpatialMemoryNode>();
    const paths: string[][] = [];

    try {
      await this.traverseKnowledgeGraph(
        startNodeId,
        [],
        traversalDepth,
        linkTypes,
        visited,
        results,
        paths,
        limit,
      );

      this.updateQueryMetrics(startTime);
      this.metrics.knowledgeTraversals++;

      return {
        nodes: Array.from(results.values()),
        paths,
      };
    } catch (error) {
      this.logger.error("Knowledge graph traversal failed", {
        startNodeId,
        error: error.message,
      });
      throw error;
    }
  }

  /**
   * Query memory with complex filters
   */
  async queryMemory(query: MemoryQuery): Promise<SpatialMemoryNode[]> {
    const startTime = Date.now();

    try {
      let candidates: SpatialMemoryNode[];

      switch (query.type) {
        case "spatial":
          candidates = await this.queryMemoryBySpatialProximity(
            query.parameters.location!,
            query.parameters.radius!,
            query.parameters.memoryTypes,
            query.limit,
          );
          break;

        case "temporal":
          candidates = this.queryByTemporalRange(
            query.parameters.timeRange!.start,
            query.parameters.timeRange!.end,
          );
          break;

        case "semantic":
          candidates = await this.queryBySemantic(
            query.parameters.semantic!,
            query.parameters.agentId,
          );
          break;

        case "knowledge_graph":
          const graphResult = await this.queryMemoryByKnowledgeGraph(
            query.parameters.agentId!, // Using as start node
            3,
            undefined,
            query.limit,
          );
          candidates = graphResult.nodes;
          break;

        case "full_text":
          candidates = await this.queryByFullText(
            query.parameters.keywords!,
            query.parameters.memoryTypes,
          );
          break;

        default:
          throw new Error(`Unknown query type: ${query.type}`);
      }

      // Apply filters
      let filtered = candidates;
      if (query.filters) {
        filtered = this.applyFilters(candidates, query.filters);
      }

      // Apply pagination
      const start = query.offset || 0;
      const end = start + (query.limit || 50);
      const results = filtered.slice(start, end);

      this.updateQueryMetrics(startTime);

      return results;
    } catch (error) {
      this.logger.error("Memory query failed", {
        query: query.type,
        error: error.message,
      });
      throw error;
    }
  }

  /**
   * Update memory node with spatial context
   */
  async updateMemoryNode(
    nodeId: string,
    updates: Partial<SpatialMemoryNode>,
  ): Promise<void> {
    const node = this.spatialMemoryNodes.get(nodeId);
    if (!node) {
      throw new Error(`Memory node not found: ${nodeId}`);
    }

    const updatedNode: SpatialMemoryNode = {
      ...node,
      ...updates,
      vectorClock: node.vectorClock.increment(),
      metadata: {
        ...node.metadata,
        ...updates.metadata,
        lastAccessed: new Date(),
      },
    };

    this.spatialMemoryNodes.set(nodeId, updatedNode);

    // Update indexes if location changed
    if (updates.location && this.config.spatialIndexingEnabled) {
      this.removeSpatialIndex(node);
      this.updateSpatialIndex(updatedNode);
    }

    // Update knowledge graph if links changed
    if (updates.knowledgeLinks && this.config.knowledgeGraphEnabled) {
      this.updateKnowledgeGraph(updatedNode);
    }

    // Update proximity index
    await this.updateProximityIndex(updatedNode);

    // Propagate to distributed memory
    const memoryOperation: MemoryOperation = {
      type: "set",
      key: `spatial:${nodeId}`,
      value: updatedNode,
      vectorClock: updatedNode.vectorClock,
      metadata: {
        priority: updatedNode.metadata.priority,
        ttl: updatedNode.metadata.expirationDate?.getTime(),
        namespace: "agentspace",
        sourceAgent: updatedNode.agentId,
      },
    };

    await this.propagateToDistributedMemory(memoryOperation);

    this.metrics.memoryOperations++;
    this.emit("memory_node_updated", updatedNode);
  }

  /**
   * Delete memory node
   */
  async deleteMemoryNode(nodeId: string): Promise<void> {
    const node = this.spatialMemoryNodes.get(nodeId);
    if (!node) return;

    // Remove from spatial memory
    this.spatialMemoryNodes.delete(nodeId);

    // Remove from indexes
    this.removeSpatialIndex(node);
    this.removeKnowledgeGraphNode(nodeId);
    this.proximityIndex.delete(nodeId);
    this.removeTemporalIndex(node);

    // Remove from distributed memory
    const memoryOperation: MemoryOperation = {
      type: "delete",
      key: `spatial:${nodeId}`,
      vectorClock: node.vectorClock.increment(),
      metadata: {
        priority: 5,
        namespace: "agentspace",
        sourceAgent: node.agentId,
      },
    };

    await this.propagateToDistributedMemory(memoryOperation);

    this.logger.debug("Memory node deleted", { nodeId });
    this.emit("memory_node_deleted", { nodeId, node });
  }

  /**
   * Synchronize with nearby agents
   */
  async synchronizeWithNearbyAgents(
    agentLocation: Vector3D,
    syncRadius: number,
  ): Promise<void> {
    const nearbyNodes = await this.queryMemoryBySpatialProximity(
      agentLocation,
      syncRadius,
    );

    const agentIds = [...new Set(nearbyNodes.map((node) => node.agentId))];

    for (const targetAgentId of agentIds) {
      try {
        await this.baseMemoryManager.createDeltaSync(targetAgentId);
        this.logger.debug("Synchronized with nearby agent", {
          targetAgentId,
          location: agentLocation,
        });
      } catch (error) {
        this.logger.warn("Failed to sync with agent", {
          targetAgentId,
          error: error.message,
        });
      }
    }
  }

  /**
   * Get memory analytics
   */
  async getMemoryAnalytics(forceRefresh = false): Promise<MemoryAnalytics> {
    const cacheAge = Date.now() - this.analyticsCache.lastUpdate.getTime();

    if (!forceRefresh && this.analyticsCache.analytics && cacheAge < 300000) {
      // 5 minute cache
      return this.analyticsCache.analytics;
    }

    const analytics = await this.generateAnalytics();
    this.analyticsCache = {
      analytics,
      lastUpdate: new Date(),
    };

    return analytics;
  }

  /**
   * Get performance metrics
   */
  getMetrics() {
    return {
      ...this.metrics,
      timestamp: new Date(),
      totalMemoryNodes: this.spatialMemoryNodes.size,
      spatialIndexSize: this.spatialIndex.size,
      knowledgeGraphSize: this.knowledgeGraph.size,
      proximityIndexSize: this.proximityIndex.size,
    };
  }

  /**
   * Private helper methods
   */

  private initializeEnhancedFeatures(): void {
    // Initialize spatial indexing grid
    if (this.config.spatialIndexingEnabled) {
      this.spatialIndex = new Map();
    }

    // Initialize knowledge graph
    if (this.config.knowledgeGraphEnabled) {
      this.knowledgeGraph = new Map();
    }

    // Setup periodic maintenance
    setInterval(() => {
      this.performMaintenance();
    }, 60000); // Every minute
  }

  private setupBaseManagerIntegration(): void {
    // Listen for distributed memory events
    this.baseMemoryManager.on("delta_applied", (delta) => {
      this.handleDistributedMemoryDelta(delta);
    });

    this.baseMemoryManager.on("conflict_resolved", (resolution) => {
      this.handleConflictResolution(resolution);
    });
  }

  private updateSpatialIndex(node: SpatialMemoryNode): void {
    const gridKey = this.getSpatialGridKey(node.location);

    if (!this.spatialIndex.has(gridKey)) {
      this.spatialIndex.set(gridKey, new Set());
    }

    this.spatialIndex.get(gridKey)!.add(node.id);
    this.metrics.indexUpdates++;
  }

  private removeSpatialIndex(node: SpatialMemoryNode): void {
    const gridKey = this.getSpatialGridKey(node.location);
    const nodeSet = this.spatialIndex.get(gridKey);

    if (nodeSet) {
      nodeSet.delete(node.id);
      if (nodeSet.size === 0) {
        this.spatialIndex.delete(gridKey);
      }
    }
  }

  private getSpatialGridKey(location: Vector3D): string {
    const gridSize = this.config.spatialRadius / 2;
    const x = Math.floor(location.x / gridSize);
    const y = Math.floor(location.y / gridSize);
    const z = Math.floor(location.z / gridSize);
    return `${x},${y},${z}`;
  }

  private getSpatialCandidates(
    location: Vector3D,
    radius: number,
  ): Set<string> {
    const candidates = new Set<string>();
    const gridSize = this.config.spatialRadius / 2;
    const gridRadius = Math.ceil(radius / gridSize);

    const centerX = Math.floor(location.x / gridSize);
    const centerY = Math.floor(location.y / gridSize);
    const centerZ = Math.floor(location.z / gridSize);

    for (let x = centerX - gridRadius; x <= centerX + gridRadius; x++) {
      for (let y = centerY - gridRadius; y <= centerY + gridRadius; y++) {
        for (let z = centerZ - gridRadius; z <= centerZ + gridRadius; z++) {
          const gridKey = `${x},${y},${z}`;
          const nodes = this.spatialIndex.get(gridKey);
          if (nodes) {
            nodes.forEach((nodeId) => candidates.add(nodeId));
          }
        }
      }
    }

    return candidates;
  }

  private calculateDistance(pos1: Vector3D, pos2: Vector3D): number {
    const dx = pos1.x - pos2.x;
    const dy = pos1.y - pos2.y;
    const dz = pos1.z - pos2.z;
    return Math.sqrt(dx * dx + dy * dy + dz * dz);
  }

  private updateKnowledgeGraph(node: SpatialMemoryNode): void {
    // Remove old links
    this.removeKnowledgeGraphNode(node.id);

    // Add new links
    this.knowledgeGraph.set(node.id, new Set(node.knowledgeLinks));

    // Add reverse links
    for (const link of node.knowledgeLinks) {
      if (!this.knowledgeGraph.has(link.targetNodeId)) {
        this.knowledgeGraph.set(link.targetNodeId, new Set());
      }

      // Create reverse link
      const reverseLink: KnowledgeLink = {
        targetNodeId: node.id,
        linkType: link.linkType,
        strength: link.strength,
        confidence: link.confidence,
        metadata: { ...link.metadata, reverse: true },
      };

      this.knowledgeGraph.get(link.targetNodeId)!.add(reverseLink);
    }
  }

  private removeKnowledgeGraphNode(nodeId: string): void {
    const links = this.knowledgeGraph.get(nodeId);
    if (links) {
      // Remove reverse links
      for (const link of links) {
        const targetLinks = this.knowledgeGraph.get(link.targetNodeId);
        if (targetLinks) {
          for (const targetLink of targetLinks) {
            if (targetLink.targetNodeId === nodeId) {
              targetLinks.delete(targetLink);
              break;
            }
          }
        }
      }
    }

    this.knowledgeGraph.delete(nodeId);
  }

  private async updateProximityIndex(node: SpatialMemoryNode): Promise<void> {
    const neighbors = await this.queryMemoryBySpatialProximity(
      node.location,
      this.config.spatialRadius,
      undefined,
      20,
    );

    const proximityNeighbors: ProximityNeighbor[] = neighbors
      .filter((neighbor) => neighbor.id !== node.id)
      .map((neighbor) => ({
        nodeId: neighbor.id,
        distance: this.calculateDistance(node.location, neighbor.location),
        relationship: this.determineRelationshipType(node, neighbor),
        weight: this.calculateRelationshipWeight(node, neighbor),
      }))
      .sort((a, b) => a.distance - b.distance);

    const proximityIndex: ProximityIndex = {
      spatialHash: this.getSpatialGridKey(node.location),
      neighbors: proximityNeighbors,
      influenceRadius: this.config.spatialRadius,
      interactionStrength:
        this.calculateInteractionStrength(proximityNeighbors),
    };

    this.proximityIndex.set(node.id, proximityIndex);
  }

  private updateTemporalIndex(node: SpatialMemoryNode): void {
    const timeBucket = this.getTimeBucket(node.metadata.lastAccessed);

    if (!this.temporalIndex.has(timeBucket)) {
      this.temporalIndex.set(timeBucket, []);
    }

    this.temporalIndex.get(timeBucket)!.push(node);
  }

  private removeTemporalIndex(node: SpatialMemoryNode): void {
    const timeBucket = this.getTimeBucket(node.metadata.lastAccessed);
    const nodes = this.temporalIndex.get(timeBucket);

    if (nodes) {
      const index = nodes.findIndex((n) => n.id === node.id);
      if (index > -1) {
        nodes.splice(index, 1);
      }

      if (nodes.length === 0) {
        this.temporalIndex.delete(timeBucket);
      }
    }
  }

  private getTimeBucket(date: Date): string {
    const hour = date.getHours();
    const day = date.toISOString().split("T")[0];
    return `${day}_${Math.floor(hour / 4) * 4}`; // 4-hour buckets
  }

  private async traverseKnowledgeGraph(
    currentNodeId: string,
    currentPath: string[],
    remainingDepth: number,
    linkTypes: string[] | undefined,
    visited: Set<string>,
    results: Map<string, SpatialMemoryNode>,
    paths: string[][],
    limit: number,
  ): Promise<void> {
    if (
      remainingDepth === 0 ||
      visited.has(currentNodeId) ||
      results.size >= limit
    ) {
      return;
    }

    visited.add(currentNodeId);
    const currentNode = this.spatialMemoryNodes.get(currentNodeId);

    if (currentNode) {
      results.set(currentNodeId, currentNode);
      paths.push([...currentPath, currentNodeId]);
    }

    const links = this.knowledgeGraph.get(currentNodeId);
    if (!links) return;

    for (const link of links) {
      if (linkTypes && !linkTypes.includes(link.linkType)) continue;

      await this.traverseKnowledgeGraph(
        link.targetNodeId,
        [...currentPath, currentNodeId],
        remainingDepth - 1,
        linkTypes,
        visited,
        results,
        paths,
        limit,
      );
    }
  }

  private queryByTemporalRange(start: Date, end: Date): SpatialMemoryNode[] {
    const results: SpatialMemoryNode[] = [];

    for (const [timeBucket, nodes] of this.temporalIndex) {
      const bucketTime = new Date(timeBucket.replace("_", "T") + ":00:00.000Z");
      if (bucketTime >= start && bucketTime <= end) {
        results.push(...nodes);
      }
    }

    return results;
  }

  private async queryBySemantic(
    semantic: string,
    agentId?: string,
  ): Promise<SpatialMemoryNode[]> {
    // Simplified semantic search - would integrate with actual semantic search engine
    const results: SpatialMemoryNode[] = [];

    for (const node of this.spatialMemoryNodes.values()) {
      if (agentId && node.agentId !== agentId) continue;

      // Simple text matching - would use embeddings in production
      const dataString = JSON.stringify(node.data).toLowerCase();
      if (dataString.includes(semantic.toLowerCase())) {
        results.push(node);
      }
    }

    return results;
  }

  private async queryByFullText(
    keywords: string[],
    memoryTypes?: string[],
  ): Promise<SpatialMemoryNode[]> {
    const results: SpatialMemoryNode[] = [];

    for (const node of this.spatialMemoryNodes.values()) {
      if (memoryTypes && !memoryTypes.includes(node.memoryType)) continue;

      const dataString = JSON.stringify(node.data).toLowerCase();
      const matches = keywords.some((keyword) =>
        dataString.includes(keyword.toLowerCase()),
      );

      if (matches) {
        results.push(node);
      }
    }

    return results;
  }

  private applyFilters(
    nodes: SpatialMemoryNode[],
    filters: MemoryFilter[],
  ): SpatialMemoryNode[] {
    return nodes.filter((node) => {
      return filters.every((filter) => {
        const value = this.getFilterValue(node, filter.field);
        return this.evaluateFilterCondition(
          value,
          filter.operator,
          filter.value,
        );
      });
    });
  }

  private getFilterValue(node: SpatialMemoryNode, field: string): any {
    const fieldPath = field.split(".");
    let value: any = node;

    for (const segment of fieldPath) {
      if (value && typeof value === "object") {
        value = value[segment];
      } else {
        return undefined;
      }
    }

    return value;
  }

  private evaluateFilterCondition(
    value: any,
    operator: string,
    filterValue: any,
  ): boolean {
    switch (operator) {
      case "equals":
        return value === filterValue;
      case "contains":
        return typeof value === "string" && value.includes(filterValue);
      case "greater_than":
        return value > filterValue;
      case "less_than":
        return value < filterValue;
      case "in_range":
        return value >= filterValue.min && value <= filterValue.max;
      default:
        return false;
    }
  }

  private async propagateToDistributedMemory(
    operation: MemoryOperation,
  ): Promise<void> {
    // Integration with base distributed memory system
    try {
      // This would trigger synchronization across the swarm
      await this.baseMemoryManager.applyDelta({
        deltaId: `enhanced_${Date.now()}`,
        sourceAgent: operation.metadata.sourceAgent,
        targetAgents: [],
        version: operation.vectorClock.toString(),
        operations: [operation],
        merkleRoot: "",
        compressedData: Buffer.from(JSON.stringify(operation)),
        checksum: "",
        timestamp: new Date(),
        dependencies: [],
      });
    } catch (error) {
      this.logger.error("Failed to propagate to distributed memory", {
        operation: operation.type,
        error: error.message,
      });
    }
  }

  private async integrateWithMem0(node: SpatialMemoryNode): Promise<void> {
    // Integration with Mem0 MCP for knowledge graph storage
    try {
      // This would call Mem0 MCP tools for persistent storage
      this.logger.debug("Integrating with Mem0", {
        nodeId: node.id,
        memoryType: node.memoryType,
      });
    } catch (error) {
      this.logger.error("Mem0 integration failed", {
        nodeId: node.id,
        error: error.message,
      });
    }
  }

  private handleDistributedMemoryDelta(delta: any): void {
    // Handle deltas from distributed memory system
    for (const operation of delta.operations) {
      if (operation.key.startsWith("spatial:")) {
        const nodeId = operation.key.replace("spatial:", "");

        if (operation.type === "set") {
          this.spatialMemoryNodes.set(nodeId, operation.value);
        } else if (operation.type === "delete") {
          this.spatialMemoryNodes.delete(nodeId);
        }
      }
    }
  }

  private handleConflictResolution(resolution: any): void {
    // Handle conflict resolution from base memory system
    this.logger.debug("Handling memory conflict resolution", resolution);
  }

  private updateQueryMetrics(startTime: number): void {
    const queryTime = Date.now() - startTime;
    this.metrics.averageQueryTime =
      (this.metrics.averageQueryTime + queryTime) / 2;
  }

  private async generateAnalytics(): Promise<MemoryAnalytics> {
    const totalNodes = this.spatialMemoryNodes.size;
    const memoryTypes: { [type: string]: number } = {};
    const locations: Vector3D[] = [];

    // Collect statistics
    for (const node of this.spatialMemoryNodes.values()) {
      memoryTypes[node.memoryType] = (memoryTypes[node.memoryType] || 0) + 1;
      locations.push(node.location);
    }

    return {
      totalNodes,
      spatialDistribution: this.analyzeSpatialDistribution(locations),
      memoryTypes,
      knowledgeConnectivity: this.analyzeKnowledgeConnectivity(),
      temporalPatterns: this.analyzeTemporalPatterns(),
      insights: await this.generateInsights(),
    };
  }

  private analyzeSpatialDistribution(
    locations: Vector3D[],
  ): SpatialDistribution {
    // Analyze spatial clustering and coverage
    const gridSize = this.config.spatialRadius;
    const hotspots = new Map<string, { location: Vector3D; count: number }>();

    for (const location of locations) {
      const gridKey = this.getSpatialGridKey(location);
      if (!hotspots.has(gridKey)) {
        hotspots.set(gridKey, {
          location: this.snapToGrid(location, gridSize),
          count: 0,
        });
      }
      hotspots.get(gridKey)!.count++;
    }

    return {
      hotspots: Array.from(hotspots.values())
        .map((spot) => ({ location: spot.location, density: spot.count }))
        .sort((a, b) => b.density - a.density)
        .slice(0, 10),
      coverage: hotspots.size * gridSize * gridSize * gridSize,
      clustering: this.calculateClustering(locations),
    };
  }

  private analyzeKnowledgeConnectivity(): ConnectivityMetrics {
    const totalNodes = this.knowledgeGraph.size;
    let totalConnections = 0;
    let isolatedNodes = 0;

    for (const links of this.knowledgeGraph.values()) {
      totalConnections += links.size;
      if (links.size === 0) isolatedNodes++;
    }

    const averageConnections =
      totalNodes > 0 ? totalConnections / totalNodes : 0;
    const maxPossibleConnections = totalNodes * (totalNodes - 1);
    const networkDensity =
      maxPossibleConnections > 0
        ? totalConnections / maxPossibleConnections
        : 0;

    return {
      averageConnections,
      networkDensity,
      stronglyConnectedComponents: 1, // Simplified
      isolatedNodes,
    };
  }

  private analyzeTemporalPatterns(): TemporalPattern[] {
    const patterns: TemporalPattern[] = [];
    const hourlyActivity = new Array(24).fill(0);

    for (const nodes of this.temporalIndex.values()) {
      for (const node of nodes) {
        const hour = node.metadata.lastAccessed.getHours();
        hourlyActivity[hour]++;
      }
    }

    // Find peak hours
    const maxActivity = Math.max(...hourlyActivity);
    hourlyActivity.forEach((activity, hour) => {
      if (activity > maxActivity * 0.7) {
        // 70% of peak activity
        patterns.push({
          pattern: `high_activity_hour_${hour}`,
          frequency: activity,
          timeOfDay: this.getTimeOfDay(hour),
          confidence: activity / maxActivity,
        });
      }
    });

    return patterns;
  }

  private async generateInsights(): Promise<MemoryInsight[]> {
    const insights: MemoryInsight[] = [];

    // Pattern detection
    if (this.spatialMemoryNodes.size > 100) {
      insights.push({
        type: "pattern",
        description: "High memory utilization detected",
        confidence: 0.8,
        data: { nodeCount: this.spatialMemoryNodes.size },
        timestamp: new Date(),
        relevantNodes: Array.from(this.spatialMemoryNodes.keys()).slice(0, 5),
      });
    }

    return insights;
  }

  private performMaintenance(): void {
    // Cleanup expired nodes
    const now = Date.now();
    for (const [nodeId, node] of this.spatialMemoryNodes) {
      if (
        node.metadata.expirationDate &&
        node.metadata.expirationDate.getTime() < now
      ) {
        this.deleteMemoryNode(nodeId);
      }
    }

    // Optimize indexes
    if (
      this.spatialMemoryNodes.size > 1000 &&
      this.config.spatialIndexingEnabled
    ) {
      this.optimizeSpatialIndex();
    }
  }

  // Helper methods...
  private determineRelationshipType(
    node1: SpatialMemoryNode,
    node2: SpatialMemoryNode,
  ): string {
    if (node1.memoryType === node2.memoryType) return "similar_type";
    if (node1.agentId === node2.agentId) return "same_agent";
    return "proximity";
  }

  private calculateRelationshipWeight(
    node1: SpatialMemoryNode,
    node2: SpatialMemoryNode,
  ): number {
    const distance = this.calculateDistance(node1.location, node2.location);
    return Math.max(0, 1 - distance / this.config.spatialRadius);
  }

  private calculateInteractionStrength(neighbors: ProximityNeighbor[]): number {
    return (
      neighbors.reduce((sum, neighbor) => sum + neighbor.weight, 0) /
      Math.max(neighbors.length, 1)
    );
  }

  private snapToGrid(point: Vector3D, gridSize: number): Vector3D {
    return {
      x: Math.floor(point.x / gridSize) * gridSize + gridSize / 2,
      y: Math.floor(point.y / gridSize) * gridSize + gridSize / 2,
      z: Math.floor(point.z / gridSize) * gridSize + gridSize / 2,
    };
  }

  private calculateClustering(locations: Vector3D[]): number {
    // Simplified clustering coefficient calculation
    if (locations.length < 2) return 0;

    let totalDistance = 0;
    let pairs = 0;

    for (let i = 0; i < locations.length; i++) {
      for (let j = i + 1; j < locations.length; j++) {
        totalDistance += this.calculateDistance(locations[i], locations[j]);
        pairs++;
      }
    }

    const averageDistance = totalDistance / pairs;
    return 1 / (1 + averageDistance / this.config.spatialRadius);
  }

  private getTimeOfDay(
    hour: number,
  ): "morning" | "afternoon" | "evening" | "night" {
    if (hour >= 6 && hour < 12) return "morning";
    if (hour >= 12 && hour < 18) return "afternoon";
    if (hour >= 18 && hour < 22) return "evening";
    return "night";
  }

  private optimizeSpatialIndex(): void {
    // Rebuild spatial index for better performance
    this.spatialIndex.clear();
    for (const node of this.spatialMemoryNodes.values()) {
      this.updateSpatialIndex(node);
    }
    this.logger.debug("Spatial index optimized");
  }

  /**
   * Shutdown and cleanup
   */
  async shutdown(): Promise<void> {
    this.spatialMemoryNodes.clear();
    this.spatialIndex.clear();
    this.knowledgeGraph.clear();
    this.proximityIndex.clear();
    this.temporalIndex.clear();

    this.logger.info("Enhanced Memory Architecture shutdown complete");
  }
}