import { schema } from 'nexus'

import * as Auth from '../../utils/auth'

export const PromoCode = schema.objectType({
  name: 'PromoCode',
  definition(t) {
    t.model.id()
    t.model.createdAt()
    t.model.updatedAt()
    t.model.title()
    t.model.description()
    t.model.value()
    t.model.isFromWalter()
    t.model.isPercentage()
    t.model.isOneTimeUsePerCustomer()
    t.model.isOneTimeUse()
    t.model.canBeUse()
    t.model.order()
  },
})

export const PromoCodeQueries = schema.extendType({
  type: 'Query',
  definition(t) {
    t.crud.promoCode()
    t.crud.promoCodes({ filtering: true, ordering: true })
  },
})

export const PromoCodeMutation = schema.extendType({
  type: 'Mutation',
  definition: (t) => {
    t.crud.createOnePromoCode({ alias: 'createPromoCode' })
    t.crud.deleteOnePromoCode({ alias: 'deletePromoCode' })
    t.crud.updateOnePromoCode({ alias: 'updatePromoCode' })
    t.field('getAndVerifyPromoCodeForCurrentUser', {
      type: 'PromoCode',
      args: {
        promoCodeTitle: schema.stringArg(),
      },
      resolve: async (parent, { promoCodeTitle }, ctx: NexusContext) => {
        const currentUserId = Auth.getUserId(ctx)
        const promoCode = await ctx.prisma.promoCode.findOne({ where: { title: promoCodeTitle } })

        if (!promoCode) {
          throw new Error('Invalid promo code')
        }

        if (promoCode.isOneTimeUse) {
          const ordersWithThisPromoCode = await ctx.prisma.order.findMany({
            where: {
              promoCodes: {
                some: {
                  title: promoCodeTitle,
                },
              },
            },
          })
          if (ordersWithThisPromoCode.length > 0) {
            throw new Error('This promo code has already been used')
          }
        }

        if (promoCode.isOneTimeUsePerCustomer) {
          const ordersWithThisPromoCodeByCurrentUser = await ctx.prisma.order.findMany({
            where: {
              AND: [
                {
                  promoCodes: {
                    some: { title: promoCodeTitle },
                  },
                },
                {
                  customer: {
                    id: currentUserId,
                  },
                },
              ],
            },
          })
          if (ordersWithThisPromoCodeByCurrentUser.length > 0) {
            throw new Error("You've already used this promo code")
          }
        }

        return promoCode
      },
    })
  },
})