import { WECHAT_NOTIFY_SUCCESS_V2 } from '../wechat-pay.mjs';

export function attachPortalWebhookRoutes({
  app,
  userAuthReady = Promise.resolve(),
  wechatNotifyBody,
  wechatMpBody,
  wechatMpConfig,
  getRechargeService = () => null,
  getWechatPayClient = () => null,
  getWechatMpService = () => null,
  logger = console,
} = {}) {
  if (
    !app ||
    typeof wechatNotifyBody !== 'function' ||
    typeof wechatMpBody !== 'function' ||
    !wechatMpConfig
  ) {
    throw new Error(
      'attachPortalWebhookRoutes requires route dependencies',
    );
  }

  app.post(
    '/webhooks/wechat-pay/notify',
    wechatNotifyBody,
    async (req, res) => {
      await userAuthReady;
      const rechargeService = getRechargeService();
      const wechatPayClient = getWechatPayClient();
      const isV2 = wechatPayClient?.apiVersion === 'v2';
      if (!rechargeService || !wechatPayClient?.enabled) {
        if (isV2) {
          return res
            .status(503)
            .type('text/xml')
            .send(
              '<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[支付未启用]]></return_msg></xml>',
            );
        }
        return res
          .status(503)
          .json({
            code: 'FAIL',
            message: '支付未启用',
          });
      }
      try {
        const bodyText = Buffer.isBuffer(req.body)
          ? req.body.toString('utf8')
          : String(req.body ?? '');
        await rechargeService.handleWechatNotify({
          headers: req.headers,
          body: bodyText,
        });
        if (isV2) {
          return res
            .type('text/xml')
            .send(WECHAT_NOTIFY_SUCCESS_V2);
        }
        return res.json({
          code: 'SUCCESS',
          message: '成功',
        });
      } catch (error) {
        logger.error('WeChat notify failed:', error);
        const message =
          error instanceof Error
            ? error.message
            : '处理失败';
        if (isV2) {
          return res
            .status(500)
            .type('text/xml')
            .send(
              `<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[${message}]]></return_msg></xml>`,
            );
        }
        return res
          .status(500)
          .json({ code: 'FAIL', message });
      }
    },
  );

  if (!wechatMpConfig.enabled) return;

  app.get(
    '/webhooks/wechat-mp/messages',
    async (req, res) => {
      await userAuthReady;
      const wechatMpService = getWechatMpService();
      if (!wechatMpService?.enabled) {
        return res
          .status(503)
          .send('wechat mp disabled');
      }
      const result =
        wechatMpService.verifyUrlChallenge(req.query);
      if (!result.ok) {
        logger.warn('WeChat MP verify failed:', {
          encryptType:
            req.query.encrypt_type ?? null,
          timestamp: req.query.timestamp ?? null,
          nonce: req.query.nonce ?? null,
        });
        return res
          .status(result.status ?? 403)
          .send(
            result.body ?? 'invalid signature',
          );
      }
      logger.log('WeChat MP verify ok:', {
        encryptType:
          req.query.encrypt_type ?? null,
        timestamp: req.query.timestamp ?? null,
        nonce: req.query.nonce ?? null,
      });
      return res
        .type('text/plain')
        .send(String(result.body ?? ''));
    },
  );

  app.post(
    '/webhooks/wechat-mp/messages',
    wechatMpBody,
    async (req, res) => {
      await userAuthReady;
      const wechatMpService = getWechatMpService();
      if (!wechatMpService?.enabled) {
        return res
          .status(503)
          .send('wechat mp disabled');
      }
      try {
        const bodyText = String(req.body ?? '');
        const fromUser =
          bodyText.match(
            /<FromUserName><!\[CDATA\[([\s\S]*?)\]\]><\/FromUserName>/,
          )?.[1] ?? null;
        const msgType =
          bodyText.match(
            /<MsgType><!\[CDATA\[([\s\S]*?)\]\]><\/MsgType>/,
          )?.[1] ?? null;
        const content =
          bodyText.match(
            /<Content><!\[CDATA\[([\s\S]*?)\]\]><\/Content>/,
          )?.[1] ?? null;
        logger.log('WeChat MP message received:', {
          at: new Date().toISOString(),
          fromUser: fromUser
            ? `${fromUser.slice(0, 8)}...`
            : null,
          msgType,
          contentPreview: content
            ? `${String(content).slice(0, 24)}`
            : null,
        });
        const result =
          await wechatMpService.handleInboundMessage(
            req.body,
            req.query,
          );
        if (result.task) void result.task;
        if (result.contentType) {
          res.type(result.contentType);
        }
        return res
          .status(result.status ?? 200)
          .send(result.body ?? 'success');
      } catch (error) {
        logger.error(
          'WeChat MP message failed:',
          error,
        );
        return res
          .status(500)
          .send('internal error');
      }
    },
  );
}