From 5143083efb2a7ed9d194524005dd45db9ef1a665 Mon Sep 17 00:00:00 2001
From: "cal.com" <morgan@cal.com>
Date: Fri, 5 Dec 2025 22:00:33 +0200
Subject: [PATCH] perf: handleChildrenEventType update existing events without
 mapping

---
 .../lib/handleChildrenEventTypes.ts           | 94 ++++++++++---------
 1 file changed, 48 insertions(+), 46 deletions(-)

diff --git a/packages/features/ee/managed-event-types/lib/handleChildrenEventTypes.ts b/packages/features/ee/managed-event-types/lib/handleChildrenEventTypes.ts
index 0cf0994734..48650851bc 100644
--- a/packages/features/ee/managed-event-types/lib/handleChildrenEventTypes.ts
+++ b/packages/features/ee/managed-event-types/lib/handleChildrenEventTypes.ts
@@ -276,56 +276,58 @@ export default async function handleChildrenEventTypes({
     const updatePayloadFiltered = Object.entries(updatePayload)
       .filter(([key, _]) => key !== "children")
       .reduce((newObj, [key, value]) => ({ ...newObj, [key]: value }), {});
+
     // Update event types for old users
-    const oldEventTypes = await Promise.all(
-      oldUserIds.map(async (userId) => {
-        const existingEventType = await prisma.eventType.findUnique({
-          where: {
-            userId_parentId: {
-              userId,
-              parentId,
-            },
-          },
-          select: {
-            metadata: true,
-          },
-        });
+    const oldEventTypes = await prisma.eventType.findMany({
+      where: {
+        parentId: parentId,
+        userId: { in: oldUserIds },
+      },
+      select: {
+        id: true,
+        metadata: true,
+        userId: true,
+        parentId: true,
+      },
+    });
 
-        const metadata = eventTypeMetaDataSchemaWithTypedApps.parse(existingEventType?.metadata || {});
+    const updatedOldEventTypesData = oldEventTypes.map((et) => {
+      const metadata = eventTypeMetaDataSchemaWithTypedApps.parse(et?.metadata || {});
 
-        return await prisma.eventType.update({
-          where: {
-            userId_parentId: {
-              userId,
-              parentId,
-            },
-          },
-          data: {
-            ...updatePayloadFiltered,
-            hidden: children?.find((ch) => ch.owner.id === userId)?.hidden ?? false,
-            ...("schedule" in unlockedFieldProps ? {} : { scheduleId: eventType.scheduleId || null }),
-            restrictionScheduleId: null,
-            useBookerTimezone: false,
-            hashedLink:
-              "multiplePrivateLinks" in unlockedFieldProps
-                ? undefined
-                : {
-                    deleteMany: {},
-                  },
-            allowReschedulingCancelledBookings:
-              managedEventTypeValues.allowReschedulingCancelledBookings ?? false,
-            metadata: {
-              ...(eventType.metadata as Prisma.JsonObject),
-              ...(metadata?.multipleDuration && "length" in unlockedFieldProps
-                ? { multipleDuration: metadata.multipleDuration }
-                : {}),
-              ...(metadata?.apps && "apps" in unlockedFieldProps ? { apps: metadata.apps } : {}),
-            },
-          },
-        });
-      })
-    );
+      return {
+        ...updatePayloadFiltered,
+        hidden: children?.find((ch) => ch.owner.id === et.userId)?.hidden ?? false,
+        ...("schedule" in unlockedFieldProps ? {} : { scheduleId: eventType.scheduleId || null }),
+        restrictionScheduleId: null,
+        useBookerTimezone: false,
+        hashedLink:
+          "multiplePrivateLinks" in unlockedFieldProps
+            ? undefined
+            : {
+                deleteMany: {},
+              },
+        allowReschedulingCancelledBookings:
+          managedEventTypeValues.allowReschedulingCancelledBookings ?? false,
+        metadata: {
+          ...(eventType.metadata as Prisma.JsonObject),
+          ...(metadata?.multipleDuration && "length" in unlockedFieldProps
+            ? { multipleDuration: metadata.multipleDuration }
+            : {}),
+          ...(metadata?.apps && "apps" in unlockedFieldProps ? { apps: metadata.apps } : {}),
+        },
+      };
+    });
 
+    // Update old event types data
+    await prisma.eventType.updateMany({
+      where: {
+        userId: { in: oldUserIds },
+        parentId: parentId,
+      },
+      data: updatedOldEventTypesData,
+    });
+
+    // create workflows for old users if new workflows were added
     if (currentWorkflowIds?.length) {
       await prisma.$transaction(
         currentWorkflowIds.flatMap((wfId) => {