import debug from 'debug';
import { logging } from './config';

/**
 * By default we don't log LLM inputs/outputs, to prevent exposing sensitive data. Set this flag
 * to enable logging them.
 */
const dontLogModelData = logging.dontLogModelData;

/**
 * By default we don't log tool inputs/outputs, to prevent exposing sensitive data. Set this flag
 * to enable logging them.
 */
const dontLogToolData = logging.dontLogToolData;

/**
 * A logger instance with debug, error, warn, and dontLogModelData and dontLogToolData methods.
 */
export type Logger = {
  /**
   * The namespace used for the debug logger.
   */
  namespace: string;

  /**
   * Log a debug message when debug logging is enabled.
   * @param message - The message to log.
   * @param args - The arguments to log.
   */
  debug: (message: string, ...args: any[]) => void;
  /**
   * Log an error message.
   * @param message - The message to log.
   * @param args - The arguments to log.
   */
  error: (message: string, ...args: any[]) => void;
  /**
   * Log a warning message.
   * @param message - The message to log.
   * @param args - The arguments to log.
   */
  warn: (message: string, ...args: any[]) => void;
  /**
   * Whether to log model data.
   */
  dontLogModelData: boolean;
  /**
   * Whether to log tool data.
   */
  dontLogToolData: boolean;
};

/**
 * Get a logger for a given package.
 *
 * @param namespace - the namespace to use for the logger.
 * @returns A logger object with `debug` and `error` methods.
 */
export function getLogger(namespace: string = 'openai-agents'): Logger {
  return {
    namespace,
    debug: debug(namespace),
    error: console.error,
    warn: console.warn,
    dontLogModelData,
    dontLogToolData,
  };
}

export const logger = getLogger('openai-agents:core');

export default logger;