remover booker, that's overdosed

It also brings the problem of consolidating bookers over multiple
bookings. The amount of data is not justifying having it in an own
entity

db/index.ts

@@ -1,5 +1,4 @@
 import * as mongoose from 'mongoose'
-import BookerModel, { Booker } from './booker'
 import BookingModel, { Booking, BookingDocument } from './booking'
 import BillModel, { Bill } from './bill'
 import { BOOKING_STATUS } from './enums'
@@ -20,7 +19,9 @@ function connect(): Promise<typeof mongoose> {
   return connectedPromise
 }
 
-export async function getBookedDays(uuidsToIngore?: string[]): Promise<string[]> {
+export async function getBookedDays(
+  uuidsToIngore?: string[]
+): Promise<string[]> {
   await connect()
   return BookingModel.findBookedDays(uuidsToIngore)
 }
@@ -33,14 +34,14 @@ export async function getBookingByUUID(uuid: string): Promise<BookingDocument> {
 export async function getBookings({
   status = [BOOKING_STATUS.CONFIRMED, BOOKING_STATUS.REQUESTED],
   startDateGreaterThan = '2000-01-01T00:00:00Z',
-}: { status?: BOOKING_STATUS[]; startDateGreaterThan?: string } = {}): Promise<BookingDocument[]> {
+}: { status?: BOOKING_STATUS[]; startDateGreaterThan?: string } = {}): Promise<
+  BookingDocument[]
+> {
   await connect()
   return await BookingModel.find({
     status: { $in: status },
     startDate: { $gte: startDateGreaterThan },
-  })
-    .populate('booker')
-    .exec()
+  }).exec()
 }
 
 export async function createBooking({
@@ -55,7 +56,7 @@ export async function createBooking({
   street,
   zip,
   city,
-}: Booking & Booker): Promise<Booking> {
+}: Booking): Promise<Booking> {
   await connect()
   const booking = new BookingModel({
     startDate,
@@ -63,17 +64,15 @@ export async function createBooking({
     purpose,
     org,
     destination,
+    name,
+    email,
+    phone,
+    street,
+    zip,
+    city,
   })
 
-  let booker = await BookerModel.findOne({ email }).exec()
-  if (!booker) {
-    booker = new BookerModel({ name, email, phone, street, zip, city })
-    await booker.save()
-  }
-
-  booking.booker = booker._id
   await booking.save()
-  await booking.populate('booker').execPopulate()
   return booking.toJSON()
 }