move CRUD operations to helpers

pages/admin/booking/[uuid]/bill.tsx

@@ -3,12 +3,11 @@ import Footer from '../../../../components/footer'
 import Header from '../../../../components/header'
 import Input from '../../../../components/input'
 import Select from '../../../../components/select'
-import { AdditionalCost, Bill } from '../../../../db/bill'
 import { Booking } from '../../../../db/booking'
 import { BILL_STATUS, MILAGE_TARIFS } from '../../../../db/enums'
 import { getMilageMax } from '../../../../db/index'
 import { daysFormatFrontend } from '../../../../helpers/date'
-import { getBillTotal } from '../../../../helpers/bill'
+import { getBillTotal, createBill, patchBill } from '../../../../helpers/bill'
 import { getBookingStatus } from '../../../../helpers/booking'
 import withSession, {
   isAdminSession,
@@ -79,31 +78,6 @@ function getBillStatusLabel(status: BILL_STATUS) {
   }
 }
 
-async function saveBill(
-  booking: Booking,
-  bill: {
-    milageStart: number
-    milageEnd: number
-    milage?: number
-    tarif: MILAGE_TARIFS
-    additionalCosts: AdditionalCost[]
-    status: BILL_STATUS
-  }
-): Promise<Bill> {
-  const response = await fetch(`/api/admin/booking/${booking.uuid}/bill`, {
-    method: !!booking.bill ? 'PATCH' : 'POST',
-    mode: 'cors',
-    cache: 'no-cache',
-    credentials: 'same-origin',
-    headers: {
-      'Content-Type': 'application/json',
-    },
-    referrerPolicy: 'no-referrer',
-    body: JSON.stringify(bill),
-  })
-  return response.json()
-}
-
 export default function BookingBillPage({
   booking: bookingProp,
   milageMax,
@@ -136,7 +110,8 @@ export default function BookingBillPage({
     setStoringError(null)
 
     try {
-      const bill = await saveBill(booking, {
+      const saveBill = !!booking.bill ? createBill : patchBill
+      const bill = await saveBill(booking.uuid, {
         milageStart,
         milageEnd,
         milage,