import request from '@/utils/request';
import type { ApiResult, PageResult } from '@/api/index';
import type { UserCoupon, UserCouponParam } from './model';

/**
 * 分页查询用户优惠券
 */
export async function pageUserCoupon(params: UserCouponParam) {
  const res = await request.get<ApiResult<PageResult<UserCoupon>>>(
    '/sys/user-coupon/page',
    params
  );
  if (res.code === 0) {
    return res.data;
  }
  return Promise.reject(new Error(res.message));
}

/**
 * 查询用户优惠券列表
 */
export async function listUserCoupon(params?: UserCouponParam) {
  const res = await request.get<ApiResult<UserCoupon[]>>(
    '/sys/user-coupon',
    params
  );
  if (res.code === 0 && res.data) {
    return res.data;
  }
  return Promise.reject(new Error(res.message));
}

/**
 * 获取用户优惠券统计
 */
export async function getUserCouponCount(userId: number) {
  const res = await request.get<ApiResult<{
    total: number;
    unused: number;
    used: number;
    expired: number;
  }>>(
    '/sys/user-coupon/count',
    { userId }
  );
  if (res.code === 0 && res.data) {
    return res.data;
  }
  return Promise.reject(new Error(res.message));
}

/**
 * 根据id查询用户优惠券
 */
export async function getUserCoupon(id: number) {
  const res = await request.get<ApiResult<UserCoupon>>(
    '/sys/user-coupon/' + id
  );
  if (res.code === 0 && res.data) {
    return res.data;
  }
  return Promise.reject(new Error(res.message));
}

/**
 * 使用优惠券
 */
export async function useCoupon(couponId: number, orderId: number) {
  const res = await request.put<ApiResult<unknown>>(
    '/sys/user-coupon/use',
    { couponId, orderId }
  );
  if (res.code === 0) {
    return res.message;
  }
  return Promise.reject(new Error(res.message));
}