Feature: Reserve slots currently being booked (#6909)

* Reserving slot picked up on cache

* change memory-cache to database table to block slots while reservation completes

* remove memory-cache

* update realeaseAt field when same user change te selected Slot

* Change default time to book

Co-authored-by: alannnc <alannnc@gmail.com>

* remove ip field and renews the session when the user remains in the booking form

* Remove duplicate router

* types fixes

* nit picks

* Update turbo.json

* Revert unrelated change

* Uses constant

* Constant already has a fallback

* Update slots.ts

* Unit test fixes

* slot reservation on user level and support seats

* types fixes and reserve slots on click

* Fix nit var name

---------

Co-authored-by: Efraín Rochín <roae.85@gmail.com>
Co-authored-by: zomars <zomars@me.com>
Co-authored-by: Peer Richelsen <peeroke@gmail.com>

apps/web/components/booking/AvailableTimes.tsx

@@ -10,6 +10,7 @@ import { useLocale } from "@calcom/lib/hooks/useLocale";
 import useMediaQuery from "@calcom/lib/hooks/useMediaQuery";
 import { TimeFormat } from "@calcom/lib/timeFormat";
 import { nameOfDay } from "@calcom/lib/weekday";
+import { trpc } from "@calcom/trpc/react";
 import type { Slot } from "@calcom/trpc/server/routers/viewer/slots";
 import { SkeletonContainer, SkeletonText, ToggleGroup } from "@calcom/ui";
 
@@ -28,6 +29,7 @@ type AvailableTimesProps = {
   slots?: Slot[];
   isLoading: boolean;
   ethSignature?: string;
+  duration: number;
 };
 
 const AvailableTimes: FC<AvailableTimesProps> = ({
@@ -42,7 +44,9 @@ const AvailableTimes: FC<AvailableTimesProps> = ({
   seatsPerTimeSlot,
   bookingAttendees,
   ethSignature,
+  duration,
 }) => {
+  const reserveSlotMutation = trpc.viewer.public.slots.reserveSlot.useMutation();
   const [slotPickerRef] = useAutoAnimate<HTMLDivElement>();
   const { t, i18n } = useLocale();
   const router = useRouter();
@@ -63,6 +67,14 @@ const AvailableTimes: FC<AvailableTimesProps> = ({
     [isMobile]
   );
 
+  const reserveSlot = (slot: Slot) => {
+    reserveSlotMutation.mutate({
+      slotUtcStartDate: slot.time,
+      eventTypeId,
+      slotUtcEndDate: dayjs(slot.time).utc().add(duration, "minutes").format(),
+    });
+  };
+
   return (
     <div ref={slotPickerRef}>
       {!!date ? (
@@ -150,6 +162,7 @@ const AvailableTimes: FC<AvailableTimesProps> = ({
                           " bg-default dark:bg-muted border-default hover:bg-subtle hover:border-brand-default text-emphasis mb-2 block rounded-md border py-2 text-sm font-medium",
                           brand === "#fff" || brand === "#ffffff" ? "" : ""
                         )}
+                        onClick={() => reserveSlot(slot)}
                         data-testid="time">
                         {dayjs(slot.time).tz(timeZone()).format(timeFormat)}
                         {!!seatsPerTimeSlot && (

apps/web/components/booking/SlotPicker.tsx

@@ -194,6 +194,7 @@ export const SlotPicker = ({
         bookingAttendees={bookingAttendees}
         recurringCount={recurringEventCount}
         ethSignature={ethSignature}
+        duration={parseInt(duration)}
       />
     </>
   );

apps/web/components/booking/pages/BookingPage.tsx

@@ -32,7 +32,7 @@ import getLocationOptionsForSelect from "@calcom/features/bookings/lib/getLocati
 import { FormBuilderField } from "@calcom/features/form-builder/FormBuilder";
 import { bookingSuccessRedirect } from "@calcom/lib/bookingSuccessRedirect";
 import classNames from "@calcom/lib/classNames";
-import { APP_NAME } from "@calcom/lib/constants";
+import { APP_NAME, MINUTES_TO_BOOK } from "@calcom/lib/constants";
 import useGetBrandingColours from "@calcom/lib/getBrandColours";
 import { useLocale } from "@calcom/lib/hooks/useLocale";
 import useTheme from "@calcom/lib/hooks/useTheme";
@@ -41,6 +41,7 @@ import { HttpError } from "@calcom/lib/http-error";
 import { getEveryFreqFor } from "@calcom/lib/recurringStrings";
 import { collectPageParameters, telemetryEventTypes, useTelemetry } from "@calcom/lib/telemetry";
 import { TimeFormat } from "@calcom/lib/timeFormat";
+import { trpc } from "@calcom/trpc";
 import { Button, Form, Tooltip, useCalcomTheme } from "@calcom/ui";
 import { AlertTriangle, Calendar, RefreshCw, User } from "@calcom/ui/components/icon";
 
@@ -210,8 +211,11 @@ const BookingPage = ({
   hashedLink,
   ...restProps
 }: BookingPageProps) => {
+  const removeSelectedSlotMarkMutation = trpc.viewer.public.slots.removeSelectedSlotMark.useMutation();
+  const reserveSlotMutation = trpc.viewer.public.slots.reserveSlot.useMutation();
   const { t, i18n } = useLocale();
   const { duration: queryDuration } = useRouterQuery("duration");
+  const { date: queryDate } = useRouterQuery("date");
   const isEmbed = useIsEmbed(restProps.isEmbed);
   const embedUiConfig = useEmbedUiConfig();
   const shouldAlignCentrallyInEmbed = useEmbedNonStylesConfig("align") !== "left";
@@ -227,6 +231,15 @@ const BookingPage = ({
     }),
     {}
   );
+  const reserveSlot = () => {
+    if (queryDuration) {
+      reserveSlotMutation.mutate({
+        eventTypeId: eventType.id,
+        slotUtcStartDate: dayjs(queryDate).utc().format(),
+        slotUtcEndDate: dayjs(queryDate).utc().add(parseInt(queryDuration), "minutes").format(),
+      });
+    }
+  };
   // Define duration now that we support multiple duration eventTypes
   let duration = eventType.length;
   if (
@@ -246,6 +259,12 @@ const BookingPage = ({
         collectPageParameters("/book", { isTeamBooking: document.URL.includes("team/") })
       );
     }
+    reserveSlot();
+    const interval = setInterval(reserveSlot, parseInt(MINUTES_TO_BOOK) * 60 * 1000 - 2000);
+    return () => {
+      clearInterval(interval);
+      removeSelectedSlotMarkMutation.mutate();
+    };
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
@@ -649,9 +668,9 @@ const BookingPage = ({
                   </Button>
                 </div>
               </Form>
-              {(mutation.isError || recurringMutation.isError) && (
+              {mutation.isError || recurringMutation.isError ? (
                 <ErrorMessage error={mutation.error || recurringMutation.error} />
-              )}
+              ) : null}
             </div>
           </div>
         </div>

apps/web/test/lib/getSchedule.test.ts

@@ -23,6 +23,7 @@ import { prismaMock, CalendarManagerMock } from "../../../../tests/config/single
 // TODO: Mock properly
 prismaMock.eventType.findUnique.mockResolvedValue(null);
 prismaMock.user.findMany.mockResolvedValue([]);
+prismaMock.selectedSlots.findMany.mockResolvedValue([]);
 
 jest.mock("@calcom/lib/constants", () => ({
   IS_PRODUCTION: true,
@@ -152,7 +153,7 @@ const TestData = {
 };
 
 const ctx = {
-  prisma,
+  prisma: prismaMock,
 };
 
 type App = {