// Simple in-memory logger for API requests

interface LogEntry {
  timestamp: string;
  method: string;
  endpoint: string;
  statusCode?: number;
  responseTime?: number;
  requestBody?: any;
  error?: string;
  apiKey?: string; // This will be redacted in the UI
}

class Logger {
  private logs: LogEntry[] = [];
  private maxLogs: number = 100;

  log(entry: LogEntry): void {
    // Remove sensitive information before storing
    const sanitizedEntry = { ...entry };
    
    // If apiKey exists, replace it with a redacted version
    if (sanitizedEntry.apiKey) {
      const key = sanitizedEntry.apiKey;
      sanitizedEntry.apiKey = key.substring(0, 4) + '...' + key.substring(key.length - 4);
    }
    
    // Add to the beginning for reverse chronological order
    this.logs.unshift(sanitizedEntry);
    
    // Trim logs if they exceed the maximum
    if (this.logs.length > this.maxLogs) {
      this.logs = this.logs.slice(0, this.maxLogs);
    }
  }

  getLogs(): LogEntry[] {
    // Return a copy of the logs to prevent modification
    return [...this.logs];
  }

  clearLogs(): void {
    this.logs = [];
  }
}

// Singleton instance
let loggerInstance: Logger | null = null;

export function getLogger(): Logger {
  if (!loggerInstance) {
    loggerInstance = new Logger();
  }
  return loggerInstance;
}