import { sleep } from './sleep.js';
import { logger } from './logger.js';

export async function retry<T>(
  fn: () => Promise<T>,
  options: { maxAttempts?: number; delayMs?: number; label?: string } = {},
): Promise<T> {
  const { maxAttempts = 3, delayMs = 1000, label = 'operation' } = options;

  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
    try {
      return await fn();
    } catch (err) {
      if (attempt === maxAttempts) {
        logger.error({ err, attempt, label }, `${label} failed after ${maxAttempts} attempts`);
        throw err;
      }
      logger.warn({ err, attempt, label }, `${label} failed, retrying in ${delayMs}ms...`);
      await sleep(delayMs * attempt);
    }
  }

  throw new Error('Unreachable');
}