From 2de4abba653a8fd3b5cc549d2d974220900020e8 Mon Sep 17 00:00:00 2001
From: Alex van Andel <me@alexvanandel.com>
Date: Thu, 3 Aug 2023 10:03:23 +0100
Subject: [PATCH] feat: Modify sort with if/elseif/else randomize when the
 dates are equal (#10448)

Co-authored-by: Udit Takkar <53316345+Udit-takkar@users.noreply.github.com>
Co-authored-by: Keith Williams <keithwillcode@gmail.com>
Co-authored-by: Peer Richelsen <peeroke@gmail.com>
---
 packages/lib/server/getLuckyUser.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/lib/server/getLuckyUser.ts b/packages/lib/server/getLuckyUser.ts
index bfc798b555..d0806ef805 100644
--- a/packages/lib/server/getLuckyUser.ts
+++ b/packages/lib/server/getLuckyUser.ts
@@ -92,7 +92,10 @@ async function leastRecentlyBookedUser<T extends Pick<User, "id" | "email">>({
   }
 
   const leastRecentlyBookedUser = availableUsers.sort((a, b) => {
-    return userIdAndAtCreatedPair[a.id] > userIdAndAtCreatedPair[b.id] ? 1 : -1;
+    if (userIdAndAtCreatedPair[a.id] > userIdAndAtCreatedPair[b.id]) return 1;
+    else if (userIdAndAtCreatedPair[a.id] < userIdAndAtCreatedPair[b.id]) return -1;
+    // if two (or more) dates are identical, we randomize the order
+    else return Math.random() > 0.5 ? 1 : -1;
   })[0];
 
   return leastRecentlyBookedUser;