import { Logger } from '../../utils/logger';

// Import all major subsystem components (conceptual for now)
// import { MCPSettingsManager } from '../mcp-settings-manager';
// import { SQLiteMemoryCore } from '../sqlite-memory-core';
// import { QueenAgent } from '../hive-mind/queen-agent';
// import { WasmNeuralEngine } from '../neural/wasm-engine';
// import { HookRegistry } from '../hooks/hook-registry';

/**
 * @interface SystemControllerConfig
 * @description Configuration for the Unified System Controller.
 */
export interface SystemControllerConfig {
  environment: 'development' | 'staging' | 'production';
  // Add configuration for health check intervals, recovery policies, etc.
}

/**
 * @interface SystemControllerOperations
 * @description Defines operations for central coordination and management of all subsystems.
 */
export interface SystemControllerOperations {
  startup(): Promise<void>;
  shutdown(): Promise<void>;
  getSystemStatus(): Promise<any>;
  triggerHealthCheck(): Promise<boolean>;
  // Conceptual methods for auto-recovery, failover, resource management
}

/**
 * @class SystemController
 * @description Provides central coordination, health checking, and lifecycle management for all Gemini-Flow subsystems.
 */
export class SystemController implements SystemControllerOperations {
  private config: SystemControllerConfig;
  private logger: Logger;
  // Private instances of all subsystems (conceptual)
  // private mcpSettingsManager: MCPSettingsManager;
  // private sqliteMemoryCore: SQLiteMemoryCore;
  // private queenAgent: QueenAgent;
  // private wasmNeuralEngine: WasmNeuralEngine;
  // private hookRegistry: HookRegistry;

  constructor(config: SystemControllerConfig) {
    this.config = config;
    this.logger = new Logger('SystemController');
    this.logger.info('Unified System Controller initialized.');
    // Initialize all subsystem instances here (conceptual)
  }

  /**
   * Initiates a graceful startup sequence for all integrated subsystems.
   * @returns {Promise<void>}
   */
  public async startup(): Promise<void> {
    this.logger.info('Initiating system startup...');
    // Conceptual: Call initialize() on all core components in correct order
    // await this.sqliteMemoryCore.initialize();
    // await this.mcpSettingsManager.readSettings();
    // await this.queenAgent.initialize();
    // await this.wasmNeuralEngine.initialize();
    // await this.hookRegistry.initialize();

    await new Promise(resolve => setTimeout(resolve, 1000)); // Simulate startup time
    this.logger.info('System startup complete. All subsystems operational.');
  }

  /**
   * Initiates a graceful shutdown sequence for all integrated subsystems.
   * @returns {Promise<void>}
   */
  public async shutdown(): Promise<void> {
    this.logger.info('Initiating system shutdown...');
    // Conceptual: Call shutdown/close() on all core components in reverse order
    // await this.queenAgent.shutdown();
    // await this.sqliteMemoryCore.close();

    await new Promise(resolve => setTimeout(resolve, 800)); // Simulate shutdown time
    this.logger.info('System shutdown complete. All subsystems gracefully terminated.');
  }

  /**
   * Retrieves the current health and status of all integrated subsystems.
   * @returns {Promise<any>} An object containing the status of each component.
   */
  public async getSystemStatus(): Promise<any> {
    this.logger.info('Retrieving system status...');
    // Conceptual: Query status from each subsystem
    const status = {
      overall: 'healthy',
      mcp: 'operational',
      memory: 'operational',
      hiveMind: 'operational',
      neural: 'operational',
      hooks: 'operational',
      lastChecked: Date.now(),
    };
    this.logger.debug('System status:', status);
    return status;
  }

  /**
   * Triggers an immediate health check across all critical system components.
   * @returns {Promise<boolean>} True if all critical components are healthy, false otherwise.
   */
  public async triggerHealthCheck(): Promise<boolean> {
    this.logger.info('Triggering comprehensive system health check...');
    // Conceptual: Perform checks against each subsystem
    const isHealthy = Math.random() > 0.05; // 95% chance of being healthy
    this.logger.debug(`Health check result: ${isHealthy ? 'Healthy' : 'Unhealthy'}`);
    return isHealthy;
  }
}