import { Logger } from '../../utils/logger';
import { SQLiteMemoryCore } from '../sqlite-memory-core';
import { NeuralCoordinationModels } from '../neural/coordination-models';

/**
 * @interface SystemOptimizerConfig
 * @description Configuration for the System-Wide Optimizer.
 */
export interface SystemOptimizerConfig {
  optimizationLevel: 'light' | 'balanced' | 'aggressive';
  // Add thresholds for memory, CPU, network, etc.
}

/**
 * @interface SystemOptimizerOperations
 * @description Defines operations for system-wide performance optimization.
 */
export interface SystemOptimizerOperations {
  optimizeMemoryUsage(): Promise<void>;
  balanceCpuUtilization(): Promise<void>;
  optimizeNetworkBandwidth(): Promise<void>;
  optimizeDatabaseQueries(): Promise<void>;
  manageCache(): Promise<void>;
  optimizeResourceAllocation(): Promise<void>;
}

/**
 * @class SystemOptimizer
 * @description Fine-tunes the entire system for production deployment by optimizing memory, CPU, network, and database performance.
 */
export class SystemOptimizer implements SystemOptimizerOperations {
  private config: SystemOptimizerConfig;
  private logger: Logger;
  private dbCore: SQLiteMemoryCore;
  private neuralModels: NeuralCoordinationModels;

  constructor(
    config: SystemOptimizerConfig,
    dbCore: SQLiteMemoryCore,
    neuralModels: NeuralCoordinationModels
  ) {
    this.config = config;
    this.logger = new Logger('SystemOptimizer');
    this.dbCore = dbCore;
    this.neuralModels = neuralModels;
    this.logger.info('System-Wide Optimizer initialized.');
  }

  /**
   * Optimizes memory usage across all components.
   * @returns {Promise<void>}
   */
  public async optimizeMemoryUsage(): Promise<void> {
    this.logger.info('Optimizing memory usage...');
    // This would involve:
    // - Running garbage collection more frequently (if applicable).
    // - Identifying and releasing unused memory.
    // - Optimizing data structures for memory efficiency.
    await new Promise(resolve => setTimeout(resolve, 200));
    this.logger.debug('Memory usage optimized.');
  }

  /**
   * Balances CPU utilization across the system.
   * @returns {Promise<void>}
   */
  public async balanceCpuUtilization(): Promise<void> {
    this.logger.info('Balancing CPU utilization...');
    // This would involve:
    // - Distributing workloads evenly across available CPU cores.
    // - Prioritizing critical tasks.
    // - Using neural networks to predict optimal CPU allocation.
    await this.neuralModels.optimizeSystemPerformance({ metric: 'cpu_load' });
    this.logger.debug('CPU utilization balanced.');
  }

  /**
   * Optimizes network bandwidth for Google Cloud communications.
   * @returns {Promise<void>}
   */
  public async optimizeNetworkBandwidth(): Promise<void> {
    this.logger.info('Optimizing network bandwidth...');
    // This would involve:
    // - Data compression for network transfers.
    // - Intelligent routing to minimize hops.
    // - Prioritizing critical network traffic.
    await new Promise(resolve => setTimeout(resolve, 150));
    this.logger.debug('Network bandwidth optimized.');
  }

  /**
   * Optimizes database queries and connection pooling.
   * @returns {Promise<void>}
   */
  public async optimizeDatabaseQueries(): Promise<void> {
    this.logger.info('Optimizing database queries...');
    // This would involve:
    // - Analyzing slow queries and suggesting/creating indexes.
    // - Optimizing SQL statements.
    // - Managing connection pool sizes dynamically.
    await new Promise(resolve => setTimeout(resolve, 250));
    this.logger.debug('Database queries optimized.');
  }

  /**
   * Manages cache and intelligent prefetching.
   * @returns {Promise<void>}
   */
  public async manageCache(): Promise<void> {
    this.logger.info('Managing cache and intelligent prefetching...');
    // This would involve:
    // - Implementing caching strategies (e.g., LRU, LFU).
    // - Using neural networks to predict data access patterns for prefetching.
    await this.neuralModels.optimizeSystemPerformance({ metric: 'cache_hit_rate' });
    this.logger.debug('Cache managed.');
  }

  /**
   * Optimizes resource allocation using neural networks.
   * @returns {Promise<void>}
   */
  public async optimizeResourceAllocation(): Promise<void> {
    this.logger.info('Optimizing resource allocation using neural networks...');
    // This would involve:
    // - Using neural networks to predict optimal resource allocation based on workload.
    // - Dynamically adjusting CPU, memory, and other resources.
    await this.neuralModels.allocateResourcesIntelligently({});
    this.logger.debug('Resource allocation optimized.');
  }
}