/**
 * Neural Memory System
 * Provides neural pattern storage and recognition capabilities
 */

import { EventEmitter } from 'node:events';
import type { ILogger } from '../core/logger.js';

export interface NeuralPattern {
  id: string;
  pattern: any;
  context: string;
  weight: number;
  lastUsed: Date;
  successRate: number;
}

export class NeuralMemorySystem extends EventEmitter {
  private patterns = new Map<string, NeuralPattern>();
  private logger: ILogger;

  constructor(logger: ILogger) {
    super();
    this.logger = logger;
  }

  async initialize(): Promise<void> {
    this.logger.info('Neural memory system initialized');
  }

  async shutdown(): Promise<void> {
    this.patterns.clear();
    this.logger.info('Neural memory system shutdown');
  }

  async storePattern(pattern: NeuralPattern): Promise<void> {
    this.patterns.set(pattern.id, pattern);
    this.emit('pattern:stored', pattern);
  }

  async getPattern(id: string): Promise<NeuralPattern | undefined> {
    return this.patterns.get(id);
  }

  async findPatterns(context: string): Promise<NeuralPattern[]> {
    return Array.from(this.patterns.values()).filter(p => 
      p.context.includes(context)
    );
  }

  async updatePatternUsage(id: string, success: boolean): Promise<void> {
    const pattern = this.patterns.get(id);
    if (pattern) {
      pattern.lastUsed = new Date();
      pattern.successRate = success ? 
        Math.min(1.0, pattern.successRate + 0.1) : 
        Math.max(0.0, pattern.successRate - 0.1);
      this.patterns.set(id, pattern);
    }
  }

  async getHealthStatus(): Promise<{ healthy: boolean; error?: string; metrics?: Record<string, number> }> {
    return {
      healthy: true,
      metrics: {
        patterns: this.patterns.size
      }
    };
  }
}