import { Request, Response } from 'express';
import httpStatus from 'http-status';
import { EcommerceService } from '../services/ecommerce.service';
import { BaseController } from './base.controller';
import { ms } from '../server';

require('dotenv/config');

export class AffiliatesController extends BaseController {
  async upsertAffiliateCoupon(req: Request, res: Response) {
    try {
      const discount = Number(req.body.discount) || 10;

      if (discount > 20 || discount < 0) {
        throw new Error('Invalid discount');
      }

      const affiliate = await EcommerceService.getInstance().insertAffiliate(req.body);
      const coupon = await EcommerceService.getInstance()
        .insertAffiliateCoupon(affiliate, discount);
      res.status(httpStatus.OK).json(coupon);
    } catch (e) {
      ms.logger.error(e);
      res.status(httpStatus.BAD_REQUEST).json({
        error: e.message,
      });
    }
  }

  async listCouponUsage(req: Request, res: Response) {
    try {
      const { coupon } = req.params;

      let orders = await EcommerceService.getInstance().listCouponUsage(coupon);

      const otherMGMCouponOrders = await AffiliatesController.listOtherMGMCouponsOrders(coupon);
      orders = orders.concat(otherMGMCouponOrders);

      res.status(httpStatus.OK).json(orders);
    } catch (e) {
      res.status(httpStatus.BAD_REQUEST).json({
        error: e.message,
      });
    }
  }

  private static async listOtherMGMCouponsOrders(coupon: string) : Promise<any> {
    let orders = [];
    try {
      const coupons = await EcommerceService.getInstance().findCoupon(coupon);
      const affiliateId = coupons.filter((c) => c.affId)[0]?.affId;
      if (affiliateId) {
        const affiliateCoupons = await EcommerceService.getInstance()
          .listAffiliateCoupons(affiliateId);

        await Promise.all(affiliateCoupons.map(async (c) => {
          if (c.cupCodigo !== coupon && c.cupCodigo.endsWith('MGM')) {
            const moreOrders = await EcommerceService.getInstance().listCouponUsage(c.cupCodigo);
            orders = orders.concat(moreOrders);
          }
        }));
      }

      return orders;
    } catch (e) {
      // eslint-disable-next-line no-console
      console.error('Error listing other MGM coupons orders', e);
      return [];
    }
  }
}