import { Injectable } from '@nestjs/common'
import { isEmpty } from 'lodash'

import { DiscountCoupon } from '../models'
import { HttpService } from '../services/http'

import { BaseRepository } from './base.repository'

const FIND_ATTRIBUTES = `
  id
  name
  code
  discount_type
  discount_amount
  begins_at
  ends_at
  created_at
  updated_at
  created_by_id
  updated_by_id
  partner_id
  enabled
  country_codes
`

const GET_BY_CODE = `
  query discount_coupon($code: String!) {
    discount_coupon(where: {code: {_ilike: $code}}, limit: 1) {
      ${FIND_ATTRIBUTES}

      plan_discount_coupons {
        plan_id
      }
    }
  }
`

@Injectable()
export class DiscountCouponRepository extends BaseRepository {
  constructor(protected readonly httpService: HttpService) {
    super(httpService, 'plan')
  }

  async getByCode(code: string): Promise<DiscountCoupon> {
    const { data } = await this.fetchGraphQL({
      body: { query: GET_BY_CODE, variables: { code } },
    })

    return isEmpty(data) || isEmpty(data.discount_coupon)
      ? null
      : DiscountCoupon.toInstance(data.discount_coupon.shift())
  }
}