add method for finding last reservation in a block

services/officeRnD/bookings.js

@@ -244,6 +244,32 @@ const getFirstReservationInBlock = (reservation) => {
     });
 };
 
+const getLastReservationInBlock = async (reservation) => {
+    const { resourceId, memberId, end } = reservation;
+
+    const toTimestamp = moment.utc(end).add(MAX_BACK_TO_BACK_DIFFERENCE).toISOString();
+    const fromTimestamp = end;
+
+    const filters = {
+        resourceId,
+        memberId,
+        start: {
+            [Op.and]: [
+                {[Op.gte]: fromTimestamp},
+                {[Op.lte]: toTimestamp}
+            ]
+        }
+    };
+
+    const nextReservation = await db.bookingReservation.findOne({where: filters});
+    if (!nextReservation) {
+        return reservation;
+    } else {
+        return getLastReservationInBlock(nextReservation);
+    }
+
+};
+
 const writeBookingReservation = (bookingReservation) => {
     const { reservationId, memberId, officeId, resourceId, start, end, timezone, canceled, hourlyRate } = bookingReservation;
     const bookingReservationForDB = {
@@ -369,5 +395,6 @@ module.exports = {
     getFirstNextBooking,
     getFirstPreviousBooking,
     getFirstReservationInBlock,
+    getLastReservationInBlock,
     bulkWriteReservationsWithChangesTracking,
 };