import type { ChatErrorInfo } from '../types/workbench';

/** 闲聊 SSE：幂等协议落地前禁止自动重放完整 POST */
export function shouldAutoRetryChat(
  _info: Pick<ChatErrorInfo, 'class'>,
  _attemptIndex: number,
): boolean {
  return false;
}

/** 长任务 SSE：仍允许有限次瞬态自动重试 */
export function shouldAutoRetryTask(
  info: Pick<ChatErrorInfo, 'class'>,
  attemptIndex: number,
): boolean {
  return info.class === 'transient' && attemptIndex < 2;
}

/** @deprecated 请使用 shouldAutoRetryChat / shouldAutoRetryTask */
export function shouldAutoRetry(
  info: Pick<ChatErrorInfo, 'class'>,
  attemptIndex: number,
): boolean {
  return shouldAutoRetryTask(info, attemptIndex);
}

export function autoRetryDelayMs(attemptIndex: number): number {
  return attemptIndex === 0 ? 1000 : 2000;
}

export function fallbackErrorClass(criteria: {
  network?: boolean;
  workspaceId?: string;
}): ChatErrorInfo['class'] {
  if (criteria.network) return 'transient';
  if (criteria.workspaceId) return 'resumable';
  return 'fatal';
}