From 71d0a35478a27a19ab5b041113b8213f0502c275 Mon Sep 17 00:00:00 2001
From: Nathan Lamy <nathan.lamycharrier@gmail.com>
Date: Tue, 24 Feb 2026 23:02:54 +0100
Subject: [PATCH] fix: update average calcul

---
 app/services/grade_service.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/app/services/grade_service.ts b/app/services/grade_service.ts
index 4751016..16191e3 100644
--- a/app/services/grade_service.ts
+++ b/app/services/grade_service.ts
@@ -3,11 +3,12 @@ import { DateTime } from 'luxon'
 
 export class GradeService {
   private calculateAverage(colles: Colle[]) {
-    const total = colles
+    const grades = colles
       .map((colle) => parseFloat(colle.grade?.toString()))
-      .filter(Boolean)
-      .reduce((sum, grade) => sum + grade, 0)
-    return (total / colles.length).toFixed(2)
+      .filter((g) => !isNaN(g) && g !== undefined)
+    if (grades.length === 0) return '0.00'
+    const total = grades.reduce((sum, g) => sum + g, 0)
+    return (total / grades.length).toFixed(2)
   }
 
   private calculateSubjectAverage(colles: Colle[], subject: string) {