expose method to create booking

server/src/data-layer/adapters/FirestoreCollections.ts

@@ -1,6 +1,6 @@
 // credit https://plainenglish.io/blog/using-firestore-with-typescript-in-the-v9-sdk-cf36851bb099
 import "dotenv/config"
-import { UserAdditionalInfo } from "data-layer/models/firebase"
+import { Booking, UserAdditionalInfo } from "data-layer/models/firebase"
 import { admin } from "business-layer/security/Firebase"
 
 const converter = <T>() => ({
@@ -23,7 +23,8 @@ const firestore = Object.assign(
 )
 
 const db = {
-  users: firestore.collection<UserAdditionalInfo>("users")
+  users: firestore.collection<UserAdditionalInfo>("users"),
+  bookings: firestore.collection<Booking>("bookings")
 } as const
 
 export default db

server/src/data-layer/services/BookingDataService.test.ts

@@ -0,0 +1,24 @@
+import { cleanFirestore } from "test-config/TestUtils"
+import BookingDataService from "./BookingDataService"
+import FirestoreCollections from "data-layer/adapters/FirestoreCollections"
+
+describe("BookingDataService", () => {
+  afterEach(async () => {
+    await cleanFirestore()
+  })
+
+  it("Should create a booking in firestore", async () => {
+    const { id } = await new BookingDataService().createBooking({
+      user_id: "asds",
+      booking_slot_id: "asdds"
+    })
+    const doc = await FirestoreCollections.bookings.doc(id).get()
+    const data = doc.data()
+
+    expect(data).not.toBe(undefined)
+    expect(data).toEqual({
+      user_id: "asds",
+      booking_slot_id: "asdds"
+    })
+  })
+})

server/src/data-layer/services/BookingDataService.ts

@@ -0,0 +1,12 @@
+import { Booking } from "data-layer/models/firebase"
+import FirestoreCollections from "data-layer/adapters/FirestoreCollections"
+
+export default class BookingDataService {
+  // Create
+  public async createBooking(bookingData: Booking) {
+    return await FirestoreCollections.bookings.add(bookingData)
+  }
+  // Read
+  // Update
+  // Delete
+}