fix: configure correct error message for duplicate event type slug (calcom#24928)

* fix/duplicate-event-type-to-existing slug

* use existing pattern to to verify the conflict on slug

Author: dhairyashiil

apps/web/public/static/locales/en/common.json

@@ -457,6 +457,7 @@
   "bookerlayout_error_unknown_layout": "The layout you selected is not a valid layout.",
   "bookerlayout_override_global_settings": "You can manage this for all your event types in Settings -> <0>Appearance</0> or <1>Override</1> for this event only.",
   "unexpected_error_try_again": "An unexpected error occurred. Try again.",
+  "duplicate_event_slug_conflict": "An event type with this URL already exists. Please try a different URL.",
   "sunday_time_error": "Invalid time on Sunday",
   "monday_time_error": "Invalid time on Monday",
   "tuesday_time_error": "Invalid time on Tuesday",

packages/features/eventtypes/components/DuplicateDialog.tsx

@@ -93,6 +93,13 @@ const DuplicateDialog = () => {
       if (err instanceof HttpError) {
         const message = `${err.statusCode}: ${err.message}`;
         showToast(message, "error");
+        return;
+      }
+
+      if (err.data?.code === "CONFLICT") {
+        const message = t("duplicate_event_slug_conflict");
+        showToast(message, "error");
+        return;
       }
 
       if (err.data?.code === "INTERNAL_SERVER_ERROR" || err.data?.code === "BAD_REQUEST") {

packages/trpc/server/routers/viewer/eventTypes/heavy/duplicate.handler.ts

@@ -95,11 +95,11 @@ export const duplicateHandler = async ({ ctx, input }: DuplicateOptions) => {
       workflows,
       hashedLink,
       destinationCalendar,
-       
+
       id: _id,
-       
+
       webhooks: _webhooks,
-       
+
       schedule: _schedule,
       // eslint-disable-next-line @typescript-eslint/ban-ts-comment
       // @ts-ignore - descriptionAsSafeHTML is added on the fly using a prisma middleware it shouldn't be used to create event type. Such a property doesn't exist on schema
@@ -227,9 +227,16 @@ export const duplicateHandler = async ({ ctx, input }: DuplicateOptions) => {
     };
   } catch (error) {
     if (error instanceof Prisma.PrismaClientKnownRequestError && error.code === "P2002") {
-      // unique constraint violation
+      
+      if (Array.isArray(error.meta?.target) && error.meta?.target.includes("slug")) {
+        throw new TRPCError({
+          code: "CONFLICT",
+          message: "duplicate_event_slug_conflict",
+        });
+      }
+      
       throw new TRPCError({
-        code: "BAD_REQUEST",
+        code: "CONFLICT",
         message: "Unique constraint violation while creating a duplicate event.",
       });
     }