emm - use string instead of date for start/endDate

db/booking.ts

@@ -1,6 +1,6 @@
 import * as mongoose from 'mongoose'
 import { v4 as uuidv4 } from 'uuid'
-import { dateFormatBackend, getDays, nowInTz } from '../helpers/date'
+import { dateFormatBackend, getDays, nowInTz, dateParseBackend } from '../helpers/date'
 import { createCalendarEvent, deleteCalendarEvent } from '../lib/googlecalendar'
 
 import { Bill } from './bill'
@@ -17,11 +17,9 @@ export type Booking = {
   city: string
   bill?: Bill
   // format YYYY-MM-DD
-  start: string,
-  startDate: Date
+  startDate: string,
   // format YYYY-MM-DD
-  end: string
-  endDate: Date
+  endDate: string,
   status?: BOOKING_STATUS
   purpose?: string
   org?: string
@@ -58,12 +56,18 @@ const BookingSchema = new mongoose.Schema<BookingDocument>(
       required: false,
     },
     startDate: {
-      type: Date,
+      type: String,
       required: true,
+      validator: function (value: string): boolean {
+        return !!dateParseBackend(value);
+      },
     },
     endDate: {
-      type: Date,
-      required: false,
+      type: String,
+      required: true,
+      validator: function (value: string): boolean {
+        return !!dateParseBackend(value);
+      },
     },
     days: {
       type: [String],
@@ -102,16 +106,6 @@ const BookingSchema = new mongoose.Schema<BookingDocument>(
   }
 )
 
-BookingSchema.virtual('start').get(function (): string {
-  const booking = this as BookingDocument
-  return dateFormatBackend(booking.startDate)
-})
-
-BookingSchema.virtual('end').get(function (): string {
-  const booking = this as BookingDocument
-  return dateFormatBackend(booking.endDate)
-})
-
 BookingSchema.pre('validate', function (next: () => void): void {
   const booking = this as BookingDocument
   booking.days = getDays({