const QIWEI_MONTHLY_PRICE = 200;

const SEAT_PLANS = [
  { seats: 1, label: '1 个号', note: '个人试用' },
  { seats: 3, label: '3 个号', note: '小团队' },
  { seats: 10, label: '10 个号', note: '成长团队', recommended: true },
  { seats: 20, label: '20 个号', note: '中型团队' },
  { seats: 50, label: '50 个号', note: '大型团队' }
];

const DURATION_PLANS = [
  { months: 1, label: '1 个月' },
  { months: 6, label: '6 个月' },
  { months: 12, label: '12 个月' }
];

const ERROR_CODES = {
  'QW-AUTH-401': { http: 401, title: '认证失败', tip: '鉴权 token 无效或已过期，请检查 QIWEI_AUTH_TOKEN 后重试。' },
  'QW-PAY-402': { http: 402, title: '飞马余额不足', tip: '账户余额不足以完成本次订阅扣费，请先充值飞马余额。' },
  'QW-SUB-402': { http: 402, title: '订阅未开通或已到期', tip: '请在动态流程页选择席位并完成开通，扣费成功后即可继续登录。' },
  'QW-SEAT-403': { http: 403, title: '席位已满', tip: '当前订阅席位已全部占用，请增购席位或停用闲置设备。' },
  'QW-UP-502': { http: 502, title: '企业微信服务暂时不可用', tip: '网关或上游服务异常，请稍后重试。' }
};

function classifySubscribeError(httpStatus, message) {
  const text = String(message || '');
  if (httpStatus === 401 || /认证失败|unauthorized/i.test(text)) return 'QW-AUTH-401';
  if (/余额不足/.test(text)) return 'QW-PAY-402';
  if (httpStatus === 402) return 'QW-SUB-402';
  if (httpStatus === 403 || /席位/.test(text)) return 'QW-SEAT-403';
  return 'QW-UP-502';
}

module.exports = {
  QIWEI_MONTHLY_PRICE,
  SEAT_PLANS,
  DURATION_PLANS,
  ERROR_CODES,
  classifySubscribeError
};