interface MessageContext {
  channelId: string;
  serverId: string;
  userId: string;
  threadId?: string;
  referencedMessageId?: string;
  attachments: ProcessedAttachment[];
  discordMetadata: {
    messageId: string;
    timestamp: number;
    editedTimestamp?: number;
    isPinned: boolean;
    mentions: string[];
  };
}

interface VoiceContext {
  channelId: string;
  serverId: string;
  connection: VoiceConnection;
  activeUsers: Map<string, VoiceUserState>;
  recordingState: {
    isRecording: boolean;
    startTime?: number;
    audioBuffer: Buffer[];
  };
}

class EventBatcher {
  private messageQueue: DiscordMessage[] = [];
  private batchTimer?: NodeJS.Timeout;
  
  addMessage(message: DiscordMessage) {
    this.messageQueue.push(message);
    
    if (!this.batchTimer) {
      this.batchTimer = setTimeout(() => {
        this.processBatch();
      }, 100); // 100ms batch window
    }
  }
  
  private async processBatch() {
    const batch = [...this.messageQueue];
    this.messageQueue = [];
    this.batchTimer = undefined;
    
    // Process messages in parallel
    await Promise.all(
      batch.map(msg => this.processMessage(msg))
    );
  }
}

class VoiceConnectionPool {
  private connections = new Map<string, VoiceConnection>();
  private maxConnections = 10;
  
  async getConnection(channelId: string): Promise<VoiceConnection> {
    // Reuse existing connection
    const existing = this.connections.get(channelId);
    if (existing?.state.status === VoiceConnectionStatus.Ready) {
      return existing;
    }
    
    // Check pool limit
    if (this.connections.size >= this.maxConnections) {
      await this.evictOldestConnection();
    }
    
    // Create new connection
    const connection = await this.createConnection(channelId);
    this.connections.set(channelId, connection);
    return connection;
  }
}

interface EventMetrics {
  eventType: string;
  processingTime: number;
  success: boolean;
  errorType?: string;
  serverId: string;
  channelId: string;
}

class EventMonitor {
  private metrics: EventMetrics[] = [];
  
  recordEvent(metric: EventMetrics) {
    this.metrics.push(metric);
    
    // Log slow events
    if (metric.processingTime > 1000) {
      logger.warn(`Slow event processing: ${metric.eventType} took ${metric.processingTime}ms`);
    }
  }
  
  getStats() {
    return {
      totalEvents: this.metrics.length,
      averageProcessingTime: this.calculateAverage(),
      errorRate: this.calculateErrorRate(),
      eventBreakdown: this.getEventTypeBreakdown()
    };
  }
}