/**
 * AgentSpace Manager (minimal operational surface)
 *
 * Provides the evented API and methods expected by AgentSpaceInitializer
 * while remaining lightweight. Real implementations can extend this.
 */

import { EventEmitter } from "events";

export interface AgentSpaceManagerConfig {
  agentSpaceId: string;
  configuration: any;
  virtualizationConfig: any;
  spatialConfig: any;
  memoryConfig: any;
  consensusConfig: any;
  mcpIntegration: any;
}

export class AgentSpaceManager extends EventEmitter {
  private config: AgentSpaceManagerConfig;
  private initialized = false;
  private agents: Map<string, any> = new Map();
  private workspaces: Map<string, any> = new Map();

  // Minimal facades referenced by integrations
  public readonly spatialFramework = {
    registerEntity: async (entity: any): Promise<string> => {
      const id = entity?.id || `entity_${Date.now()}`;
      return id;
    },
    queryNearbyEntities: async (_pos: { x: number; y: number; z: number }, _radius: number): Promise<any[]> => {
      return [];
    }
  };

  public readonly memoryArchitecture = {
    queryMemoryBySpatialProximity: async (_pos: { x: number; y: number; z: number }, _radius: number): Promise<any[]> => {
      return [];
    },
    storeMemoryNode: async (_node: any): Promise<boolean> => {
      return true;
    }
  };

  constructor(config: AgentSpaceManagerConfig, _baseMemoryManager?: any) {
    super();
    this.config = config;
  }

  async initialize(): Promise<boolean> {
    this.initialized = true;
    return true;
  }

  async shutdown(): Promise<boolean> {
    this.initialized = false;
    this.agents.clear();
    return true;
  }

  async reset(): Promise<boolean> {
    this.agents.clear();
    return true;
  }

  async spawnAgent(config: any): Promise<any> {
    if (!this.initialized) {
      throw new Error("AgentSpaceManager not initialized");
    }

    const agent = {
      id: config.id,
      type: config.type,
      status: "active",
      capabilities: config.capabilities,
      resources: config.resources,
      communication: config.communication,
    };

    this.agents.set(config.id, agent);

    return {
      success: true,
      data: agent,
    };
  }

  async terminateAgent(agentId: string, reason?: string): Promise<any> {
    const agent = this.agents.get(agentId);
    if (!agent) {
      return {
        success: false,
        error: { message: "Agent not found", code: "AGENT_NOT_FOUND" },
      };
    }

    this.agents.delete(agentId);

    return {
      success: true,
      data: {
        agentId,
        gracefulShutdown: true,
        tasksReassigned: 0,
        reason,
      },
    };
  }

  async getAgent(agentId: string): Promise<any> {
    return this.agents.get(agentId) || null;
  }

  async listAgents(): Promise<any[]> {
    return Array.from(this.agents.values());
  }

  async autoScale(config: any): Promise<any> {
    // Mock auto-scaling
    return {
      scalingTriggered: true,
      newAgentCount: config.maxAgents,
      targetLoadAchieved: true,
    };
  }

  async getAgentHealth(agentId: string): Promise<any> {
    const agent = this.agents.get(agentId);
    if (!agent) {
      throw new Error("Agent not found");
    }

    return {
      healthScore: 0.9,
      issues: [],
      lastCheckTime: Date.now(),
    };
  }

  async recoverAgent(agentId: string): Promise<any> {
    return {
      success: true,
      recoveryMethod: "restart",
      recoveryTime: 3000,
    };
  }

  async createCheckpoint(config: any): Promise<any> {
    return {
      success: true,
      data: {
        checkpointId: `checkpoint-${Date.now()}`,
        agentId: config.agentId,
        timestamp: Date.now(),
      },
    };
  }

  async rollbackToCheckpoint(config: any): Promise<any> {
    return {
      success: true,
      data: {
        checkpointId: config.checkpointId,
        stateRestored: true,
        rollbackTime: Date.now(),
      },
    };
  }

  async getSystemHealth(): Promise<any> {
    return {
      overallHealth: {
        overall: 0.9,
        services: {
          virtualization: "healthy",
          coordination: "healthy",
          memory: "healthy",
        },
      },
      criticalServicesOnline: true,
      totalAgents: this.agents.size,
      healthyAgents: this.agents.size,
    };
  }

  /**
   * Minimal optimizer used by Initializer on performance alerts
   */
  async optimizeSystem(): Promise<void> {
    // Placeholder: emit an event for external monitors
    this.emit("system_optimized", { timestamp: Date.now() });
  }

  /**
   * Deploy an agent and emit lifecycle events
   */
  async deployAgent(definition: any, position: { x: number; y: number; z: number }): Promise<{ agentId: string }> {
    if (!this.initialized) {
      await this.initialize();
    }
    const agentId = definition?.id || `agent_${Date.now()}`;
    const agent = { id: agentId, definition, position, status: "active" };
    this.agents.set(agentId, agent);
    this.emit("agent_deployed", { agentId, position });
    return { agentId };
  }

  /**
   * Create a collaborative workspace and emit event
   */
  async createCollaborativeWorkspace(participants: string[], name: string, _coordinationPosition?: { x: number; y: number; z: number }): Promise<{ zone: { id: string; name: string }, workspace?: { id: string; name: string } }> {
    const id = `zone_${Date.now()}`;
    this.emit("workspace_created", { id, name, participants });
    return { zone: { id, name }, workspace: { id, name } };
  }

  /**
   * Create a basic workspace (name, limits, spatial properties)
   */
  async createWorkspace(
    name: string,
    resourceLimits?: any,
    spatialProps?: any
  ): Promise<{ id: string; name: string; spatialProperties: any }> {
    const id = `ws_${Date.now()}`;
    const spatialProperties = spatialProps || {
      position: { x: 0, y: 0, z: 0 },
      boundingBox: { min: { x: -1, y: -1, z: -1 }, max: { x: 1, y: 1, z: 1 } }
    };
    const ws = { id, name, resourceLimits: resourceLimits || {}, spatialProperties };
    this.workspaces.set(id, ws);
    this.emit('workspace_created', { id, name });
    return { id, name, spatialProperties };
  }

  getWorkspace(id: string): any | null {
    return this.workspaces.get(id) || null;
  }
}