/**
 * Simple structured logger for the bridge process.
 * Outputs JSON lines to stdout for Python to capture.
 */

export enum LogLevel {
  DEBUG = 'DEBUG',
  INFO = 'INFO',
  WARN = 'WARN',
  ERROR = 'ERROR',
}

let currentLevel = LogLevel.INFO;

export function setLogLevel(level: LogLevel): void {
  currentLevel = level;
}

const levelPriority: Record<LogLevel, number> = {
  [LogLevel.DEBUG]: 0,
  [LogLevel.INFO]: 1,
  [LogLevel.WARN]: 2,
  [LogLevel.ERROR]: 3,
};

function log(level: LogLevel, module: string, message: string, data?: any): void {
  if (levelPriority[level] < levelPriority[currentLevel]) return;

  const entry = {
    timestamp: new Date().toISOString(),
    level,
    module,
    message,
    ...(data !== undefined ? { data } : {}),
  };

  // Output as JSON line for Python to parse
  console.log(JSON.stringify(entry));
}

export function createLogger(module: string) {
  return {
    debug: (msg: string, data?: any) => log(LogLevel.DEBUG, module, msg, data),
    info: (msg: string, data?: any) => log(LogLevel.INFO, module, msg, data),
    warn: (msg: string, data?: any) => log(LogLevel.WARN, module, msg, data),
    error: (msg: string, data?: any) => log(LogLevel.ERROR, module, msg, data),
  };
}