Add database and Prisma configurations, enhance event and leaderboard components with API integration, and update navigation for session management

app/api/admin/preferences/route.ts

@@ -0,0 +1,76 @@
+import { NextResponse } from "next/server";
+import { auth } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { Role } from "@/prisma/generated/prisma/client";
+
+export async function GET() {
+  try {
+    const session = await auth();
+
+    if (!session?.user || session.user.role !== Role.ADMIN) {
+      return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+    }
+
+    // Récupérer toutes les préférences utilisateur
+    const preferences = await prisma.userPreferences.findMany({
+      include: {
+        user: {
+          select: {
+            id: true,
+            username: true,
+            email: true,
+          },
+        },
+      },
+    });
+
+    return NextResponse.json(preferences);
+  } catch (error) {
+    console.error("Error fetching admin preferences:", error);
+    return NextResponse.json(
+      { error: "Erreur lors de la récupération des préférences" },
+      { status: 500 }
+    );
+  }
+}
+
+export async function PUT(request: Request) {
+  try {
+    const session = await auth();
+
+    if (!session?.user || session.user.role !== Role.ADMIN) {
+      return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+    }
+
+    const body = await request.json();
+    const { userId, homeBackground, eventsBackground, leaderboardBackground } =
+      body;
+
+    if (!userId) {
+      return NextResponse.json({ error: "userId requis" }, { status: 400 });
+    }
+
+    const preferences = await prisma.userPreferences.upsert({
+      where: { userId },
+      update: {
+        homeBackground: homeBackground ?? undefined,
+        eventsBackground: eventsBackground ?? undefined,
+        leaderboardBackground: leaderboardBackground ?? undefined,
+      },
+      create: {
+        userId,
+        homeBackground: homeBackground ?? null,
+        eventsBackground: eventsBackground ?? null,
+        leaderboardBackground: leaderboardBackground ?? null,
+      },
+    });
+
+    return NextResponse.json(preferences);
+  } catch (error) {
+    console.error("Error updating admin preferences:", error);
+    return NextResponse.json(
+      { error: "Erreur lors de la mise à jour des préférences" },
+      { status: 500 }
+    );
+  }
+}