Refactor API routes and component logic: Remove unused event and user management routes, streamline feedback handling in components, and enhance state management with transitions for improved user experience. Update service layer methods for better organization and maintainability across the application.

components/BackgroundPreferences.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect, useMemo } from "react";
 import ImageSelector from "@/components/ImageSelector";
+import { updateSitePreferences } from "@/actions/admin/preferences";
 
 interface SitePreferences {
   id: string;
@@ -90,40 +91,33 @@ export default function BackgroundPreferences({
         ),
       };
 
-      const response = await fetch("/api/admin/preferences", {
-        method: "PUT",
-        headers: {
-          "Content-Type": "application/json",
-        },
-        body: JSON.stringify(apiData),
-      });
+      const result = await updateSitePreferences(apiData);
 
-      if (response.ok) {
-        const data = await response.json();
-        setPreferences(data);
+      if (result.success && result.data) {
+        setPreferences(result.data);
         // Réinitialiser formData avec les nouvelles valeurs (ou images par défaut)
         setFormData({
           homeBackground: getFormValue(
-            data.homeBackground,
+            result.data.homeBackground,
             DEFAULT_IMAGES.home
           ),
           eventsBackground: getFormValue(
-            data.eventsBackground,
+            result.data.eventsBackground,
             DEFAULT_IMAGES.events
           ),
           leaderboardBackground: getFormValue(
-            data.leaderboardBackground,
+            result.data.leaderboardBackground,
             DEFAULT_IMAGES.leaderboard
           ),
         });
         setIsEditing(false);
       } else {
-        const errorData = await response.json();
-        console.error("Error updating preferences:", errorData);
-        alert(errorData.error || "Erreur lors de la mise à jour");
+        console.error("Error updating preferences:", result.error);
+        alert(result.error || "Erreur lors de la mise à jour");
       }
     } catch (error) {
       console.error("Error updating preferences:", error);
+      alert("Erreur lors de la mise à jour");
     }
   };