Function checkPremium

pmcaptcha/pmcaptcha.ts:1215–1264

* 5. Premium 用户处理 (premium) * allow: Premium 用户自动通过 * ban: Premium 用户自动拦截 * only: 仅允许 Premium 用户（非 Premium 自动拦截） * none: 不做特殊处理

(client: TelegramClient, userId: number, message: Api.Message)

  const strategy = cfg.premium();
  if (strategy === "none") return "skip";

  // 获取用户 premium 状态
  const sender = (message as any).sender ?? (message as any)._sender;
  let isPremium = false;
  if (sender) {
    isPremium = !!(sender.premium);
  } else {
    try {
      const result = await client.invoke(
        new Api.users.GetFullUser({ id: userId })
      ) as any;
      isPremium = !!(result?.users?.[0]?.premium);
    } catch (e) {
      log(LogLevel.WARN, `checkPremium: cannot get premium status for ${userId}`, e);
      return "skip";
    }
  }

  switch (strategy) {
    case "allow":
      if (isPremium) {
        wl.add(userId);
        log(LogLevel.INFO, `Auto-pass Premium user ${userId} (strategy=allow)`);
        return "pass";
      }
      return "skip";

    case "ban":
      if (isPremium) {
        log(LogLevel.INFO, `Auto-block Premium user ${userId} (strategy=ban)`);
        return "block";
      }
      return "skip";

    case "only":
      if (!isPremium) {
        log(LogLevel.INFO, `Auto-block non-Premium user ${userId} (strategy=only)`);
        return "block";
      }
      wl.add(userId);
      log(LogLevel.INFO, `Auto-pass Premium user ${userId} (strategy=only)`);
      return "pass";

    default:
      return "skip";
  }
}

/**
 * 执行所有自动过白规则（按优先级顺序）
 * 返回 true 表示已处理（通过或拦截），messageListener 应直接返回
 * 返回 false 表示继续走验证码流程
 */