From 703e6ea01d4bb2fb38445d4f6182778ef51639c2 Mon Sep 17 00:00:00 2001
From: Konstantin Wohlwend <n2d4xc@gmail.com>
Date: Sun, 1 Sep 2024 14:46:07 -0700
Subject: [PATCH] Fix empty projects

---
 apps/backend/src/app/api/v1/users/crud.tsx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/apps/backend/src/app/api/v1/users/crud.tsx b/apps/backend/src/app/api/v1/users/crud.tsx
index c79bd8e5a..904246977 100644
--- a/apps/backend/src/app/api/v1/users/crud.tsx
+++ b/apps/backend/src/app/api/v1/users/crud.tsx
@@ -122,6 +122,11 @@ export const getUserLastActiveAtMillis = async (userId: string, fallbackTo: numb
 
 // same as userIds.map(userId => getUserLastActiveAtMillis(userId, fallbackTo)), but uses a single query
 export const getUsersLastActiveAtMillis = async (userIds: string[], fallbackTo: (number | Date)[]): Promise<number[]> => {
+  if (userIds.length === 0) {
+    // Prisma.join throws an error if the array is empty, so we need to handle that case
+    return [];
+  }
+
   const events = await prismaClient.$queryRaw<Array<{ userId: string, lastActiveAt: Date }>>`
     SELECT data->>'userId' as "userId", MAX("createdAt") as "lastActiveAt"
     FROM "Event"