ordre

.claude/settings.local.json

@@ -7,7 +7,13 @@
       "Bash(npm run build:*)",
       "Bash(git add:*)",
       "Bash(git commit:*)",
-      "Bash(git push)"
+      "Bash(git push)",
+      "Bash(npm install:*)",
+      "Bash(node debug-search.js:*)",
+      "Bash(node update-referent.js:*)",
+      "Bash(node:*)",
+      "Bash(curl:*)",
+      "Bash(npx tsc:*)"
     ],
     "deny": [],
     "ask": []

app/api/add-credits-single/route.ts

@@ -0,0 +1,117 @@
+import { NextResponse } from "next/server";
+import { getDatabase } from "@/lib/db/mongodb";
+import { ObjectId } from "mongodb";
+
+export async function POST(request: Request) {
+  try {
+    const { userId } = await request.json();
+
+    if (!userId) {
+      return NextResponse.json(
+        { success: false, error: "userId est requis" },
+        { status: 400 }
+      );
+    }
+
+    const db = await getDatabase();
+    const CREDITS_TO_ADD = 3000000; // 3 millions de tokens
+
+    // Vérifier que l'utilisateur existe
+    let userObjectId: ObjectId;
+    try {
+      userObjectId = new ObjectId(userId);
+    } catch {
+      return NextResponse.json(
+        { success: false, error: "ID utilisateur invalide" },
+        { status: 400 }
+      );
+    }
+
+    const user = await db.collection("users").findOne({ _id: userObjectId });
+
+    if (!user) {
+      return NextResponse.json(
+        { success: false, error: "Utilisateur non trouvé" },
+        { status: 404 }
+      );
+    }
+
+    console.log(
+      `🎯 Ajout de ${CREDITS_TO_ADD.toLocaleString()} crédits à: ${user.email || user.name}`
+    );
+
+    // Chercher la balance existante - essayer avec ObjectId ET string
+    let existingBalance = await db
+      .collection("balances")
+      .findOne({ user: userObjectId });
+
+    // Si pas trouvé avec ObjectId, essayer avec string
+    if (!existingBalance) {
+      existingBalance = await db
+        .collection("balances")
+        .findOne({ user: userId });
+    }
+
+    console.log(`📊 Balance existante trouvée: ${existingBalance ? "OUI" : "NON"}`);
+    if (existingBalance) {
+      console.log(`📊 Balance ID: ${existingBalance._id}, Crédits actuels: ${existingBalance.tokenCredits}`);
+    }
+
+    let newBalance: number;
+
+    if (existingBalance) {
+      // Mettre à jour la balance existante avec $inc pour être sûr
+      const currentCredits = existingBalance.tokenCredits || 0;
+      newBalance = currentCredits + CREDITS_TO_ADD;
+
+      const updateResult = await db.collection("balances").updateOne(
+        { _id: existingBalance._id },
+        {
+          $inc: { tokenCredits: CREDITS_TO_ADD },
+          $set: { lastRefill: new Date() },
+        }
+      );
+
+      console.log(`✅ Update result: matchedCount=${updateResult.matchedCount}, modifiedCount=${updateResult.modifiedCount}`);
+      console.log(
+        `✅ Balance mise à jour: ${currentCredits.toLocaleString()} → ${newBalance.toLocaleString()}`
+      );
+    } else {
+      // Créer une nouvelle balance
+      newBalance = CREDITS_TO_ADD;
+
+      const insertResult = await db.collection("balances").insertOne({
+        user: userObjectId,
+        tokenCredits: newBalance,
+        autoRefillEnabled: false,
+        lastRefill: new Date(),
+        refillAmount: 0,
+        refillIntervalUnit: "month",
+        refillIntervalValue: 1,
+        __v: 0,
+      });
+
+      console.log(`🆕 Nouvelle balance créée: ${insertResult.insertedId} avec ${newBalance.toLocaleString()} crédits`);
+    }
+
+    return NextResponse.json({
+      success: true,
+      message: `${CREDITS_TO_ADD.toLocaleString()} crédits ajoutés à ${user.email || user.name}`,
+      newBalance,
+      user: {
+        id: user._id.toString(),
+        name: user.name,
+        email: user.email,
+      },
+    });
+  } catch (error) {
+    console.error("Erreur lors de l'ajout des crédits:", error);
+    return NextResponse.json(
+      {
+        success: false,
+        error: "Erreur serveur lors de l'ajout des crédits",
+      },
+      { status: 500 }
+    );
+  }
+}

app/api/collections/[collection]/route.ts

@@ -51,33 +51,86 @@ export async function GET(
     const limit = parseInt(searchParams.get("limit") || "20");
     const filter = JSON.parse(searchParams.get("filter") || "{}");
 
+    // Debug logging pour messages
+    if (collection === "messages") {
+      console.log("[API Messages] Filter reçu:", JSON.stringify(filter));
+      console.log("[API Messages] Raw filter param:", searchParams.get("filter"));
+    }
+
     // Gestion spéciale pour la collection users avec recherche par email ou id
     if (collection === "users") {
       const email = searchParams.get("email");
       const id = searchParams.get("id");
-      const search = searchParams.get("search"); // ✅ AJOUTER cette ligne
+      const search = searchParams.get("search");
+      const referent = searchParams.get("referent");
 
       if (email) {
         filter.email = email.toLowerCase();
       } else if (id) {
-        // Vérifier si l'ID est un ObjectId valide
         if (ObjectId.isValid(id)) {
           filter._id = new ObjectId(id);
         } else {
-          // Si l'ID n'est pas valide, retourner une erreur
           return NextResponse.json(
             { error: "ID utilisateur invalide" },
             { status: 400 }
           );
         }
       } else if (search) {
-        // ✅ AJOUTER ce bloc
-        // Recherche partielle sur nom et email
         filter.$or = [
           { name: { $regex: search, $options: "i" } },
           { email: { $regex: search, $options: "i" } },
         ];
       }
+
+      // Filtre par référent (peut être combiné avec search)
+      if (referent) {
+        filter.referent = referent;
+      }
+    }
+
+    // Gestion spéciale pour conversations - recherche par nom/email d'utilisateur
+    if (collection === "conversations") {
+      const search = searchParams.get("search");
+      const userId = searchParams.get("userId");
+
+      if (userId) {
+        // Recherche directe par userId (stocké comme string dans conversations)
+        filter.user = userId;
+      } else if (search && search.trim()) {
+        // Normaliser la recherche (enlever accents pour recherche insensible aux accents)
+        const normalizedSearch = search
+          .normalize("NFD")
+          .replace(/[\u0300-\u036f]/g, "");
+
+        const db = await getDatabase();
+
+        // Recherche users avec nom/email/username (insensible casse + accents)
+        const matchingUsers = await db
+          .collection("users")
+          .find({
+            $or: [
+              { name: { $regex: normalizedSearch, $options: "i" } },
+              { email: { $regex: normalizedSearch, $options: "i" } },
+              { username: { $regex: normalizedSearch, $options: "i" } },
+            ],
+          })
+          .project({ _id: 1 })
+          .toArray();
+
+        if (matchingUsers.length > 0) {
+          // IMPORTANT: Convertir en strings car user dans conversations est stocké comme string
+          const userIds = matchingUsers.map((u) => u._id.toString());
+          filter.user = { $in: userIds };
+        } else {
+          return NextResponse.json({
+            data: [],
+            total: 0,
+            page,
+            limit,
+            totalPages: 0,
+          });
+        }
+      }
     }
 
     const db = await getDatabase();
@@ -94,6 +147,11 @@ export async function GET(
       db.collection(collection).countDocuments(filter),
     ]);
 
+    // Debug logging pour messages
+    if (collection === "messages") {
+      console.log("[API Messages] Résultats:", data.length, "messages, total:", total);
+    }
+
     return NextResponse.json({
       data,
       total,

app/api/debug-users/route.ts

@@ -0,0 +1,32 @@
+import { NextResponse } from "next/server";
+import { getDatabase } from "@/lib/db/mongodb";
+
+export async function GET() {
+  try {
+    const db = await getDatabase();
+
+    // Récupérer 5 users pour debug
+    const users = await db.collection("users")
+      .find({ referent: { $exists: true } })
+      .limit(5)
+      .toArray();
+
+    return NextResponse.json({
+      success: true,
+      count: users.length,
+      users: users.map(u => ({
+        _id: u._id,
+        name: u.name,
+        email: u.email,
+        referent: u.referent,
+        cours: u.cours,
+      })),
+    });
+  } catch (error) {
+    console.error("Debug error:", error);
+    return NextResponse.json(
+      { error: error instanceof Error ? error.message : "Unknown error" },
+      { status: 500 }
+    );
+  }
+}

app/conversations/page.tsx

@@ -6,7 +6,7 @@ export default function ConversationsPage() {
       <div>
         <h1 className="text-3xl font-bold tracking-tight">Conversations</h1>
         <p className="text-muted-foreground">
-          Gestion des conversations Cercle GPTT
+          Gestion des conversations Cercle GPT
         </p>
       </div>
 

app/layout.tsx

@@ -2,6 +2,7 @@ import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
 import { Sidebar } from "@/components/layout/sidebar";
+import { QueryProvider } from "@/components/providers/query-provider";
 
 const geistSans = Geist({
   variable: "--font-geist-sans",
@@ -28,12 +29,14 @@ export default function RootLayout({
       <body
         className={`${geistSans.variable} ${geistMono.variable} antialiased`}
       >
-        <div className="flex h-screen">
+        <QueryProvider>
-          <Sidebar />
+          <div className="flex h-screen">
-          <main className="flex-1 overflow-auto">
+            <Sidebar />
-            <div className="container mx-auto p-6">{children}</div>
+            <main className="flex-1 overflow-auto">
-          </main>
+              <div className="container mx-auto p-6">{children}</div>
-        </div>
+            </main>
+          </div>
+        </QueryProvider>
       </body>
     </html>
   );

app/referents/[referent]/[cours]/page.tsx

@@ -0,0 +1,194 @@
+"use client";
+
+import { useState, useEffect, useMemo } from "react";
+import { useParams, useRouter } from "next/navigation";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/components/ui/table";
+import { ArrowLeft, Mail } from "lucide-react";
+import { formatDate } from "@/lib/utils";
+import { LibreChatUser, LibreChatBalance } from "@/lib/types";
+import { useCollection } from "@/hooks/useCollection";
+
+// Couleurs prédéfinies pour les référents
+const REFERENT_COLORS: Record<string, string> = {
+  "Emmanuel WATHELE": "#3B82F6",
+  "IHECS": "#10B981",
+};
+
+export default function CoursDetailPage() {
+  const params = useParams();
+  const router = useRouter();
+  const referent = decodeURIComponent(params.referent as string);
+  const cours = decodeURIComponent(params.cours as string);
+
+  const [students, setStudents] = useState<LibreChatUser[]>([]);
+  const [loading, setLoading] = useState(true);
+
+  // Charger tous les balances
+  const { data: balances = [] } = useCollection<LibreChatBalance>("balances", {
+    limit: 1000,
+  });
+
+  // Créer une map des crédits par utilisateur
+  const creditsMap = useMemo(() => {
+    const map = new Map<string, number>();
+    balances.forEach((balance) => {
+      map.set(balance.user, balance.tokenCredits || 0);
+    });
+    return map;
+  }, [balances]);
+
+  useEffect(() => {
+    const fetchStudents = async () => {
+      try {
+        const response = await fetch(
+          "/api/collections/users?page=1&limit=1000&filter={}"
+        );
+        const result = await response.json();
+
+        if (result.data) {
+          // Filtrer les étudiants pour ce référent et ce cours
+          const filtered = result.data.filter(
+            (user: { referent?: string; cours?: string }) =>
+              user.referent === referent && user.cours === cours
+          );
+          setStudents(filtered);
+        }
+      } catch (error) {
+        console.error("Erreur lors du chargement des étudiants:", error);
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchStudents();
+  }, [referent, cours]);
+
+  const couleur = REFERENT_COLORS[referent] || "#6B7280";
+
+  if (loading) {
+    return (
+      <div className="space-y-6">
+        <Button
+          variant="ghost"
+          onClick={() => router.push("/referents")}
+          className="mb-4"
+        >
+          <ArrowLeft className="h-4 w-4 mr-2" />
+          Retour aux référents
+        </Button>
+        <Card>
+          <CardContent className="p-6">
+            <div className="space-y-4">
+              {Array.from({ length: 5 }).map((_, i) => (
+                <div key={i} className="h-16 bg-muted animate-pulse rounded" />
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      <Button
+        variant="ghost"
+        onClick={() => router.push("/referents")}
+        className="mb-4"
+      >
+        <ArrowLeft className="h-4 w-4 mr-2" />
+        Retour aux référents
+      </Button>
+
+      <div className="flex items-center gap-3">
+        <div
+          className="w-6 h-6 rounded-full flex-shrink-0"
+          style={{ backgroundColor: couleur }}
+        />
+        <div>
+          <h1 className="text-3xl font-bold tracking-tight">{referent}</h1>
+          <p className="text-muted-foreground">{cours}</p>
+        </div>
+      </div>
+
+      <Card>
+        <CardHeader>
+          <div className="flex items-center justify-between">
+            <CardTitle>
+              Étudiants ({students.length})
+            </CardTitle>
+          </div>
+        </CardHeader>
+        <CardContent>
+          {students.length === 0 ? (
+            <div className="text-center py-12">
+              <p className="text-sm text-gray-500">
+                Aucun étudiant dans ce cours
+              </p>
+            </div>
+          ) : (
+            <div className="rounded-md border">
+              <Table>
+                <TableHeader>
+                  <TableRow>
+                    <TableHead>Nom</TableHead>
+                    <TableHead>Email</TableHead>
+                    <TableHead>Rôle</TableHead>
+                    <TableHead>Crédits</TableHead>
+                    <TableHead>Créé le</TableHead>
+                  </TableRow>
+                </TableHeader>
+                <TableBody>
+                  {students.map((student) => (
+                    <TableRow key={student._id}>
+                      <TableCell>
+                        <div className="flex items-center gap-2">
+                          <div
+                            className="w-2 h-2 rounded-full"
+                            style={{ backgroundColor: couleur }}
+                          />
+                          <span className="font-medium">
+                            {student.prenom} {student.nom}
+                          </span>
+                        </div>
+                      </TableCell>
+                      <TableCell>
+                        <div className="flex items-center gap-2">
+                          <Mail className="h-4 w-4 text-gray-400" />
+                          <span className="text-sm">{student.email}</span>
+                        </div>
+                      </TableCell>
+                      <TableCell>
+                        <Badge variant={student.role === "ADMIN" ? "default" : "secondary"}>
+                          {student.role}
+                        </Badge>
+                      </TableCell>
+                      <TableCell>
+                        <span className="text-sm">
+                          {(creditsMap.get(student._id) || 0).toLocaleString()} tokens
+                        </span>
+                      </TableCell>
+                      <TableCell className="text-sm text-gray-500">
+                        {formatDate(student.createdAt)}
+                      </TableCell>
+                    </TableRow>
+                  ))}
+                </TableBody>
+              </Table>
+            </div>
+          )}
+        </CardContent>
+      </Card>
+    </div>
+  );
+}

app/referents/page.tsx

@@ -0,0 +1,181 @@
+"use client";
+
+import { useState, useEffect } from "react";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { GraduationCap, Users, ChevronRight } from "lucide-react";
+import Link from "next/link";
+
+// Couleurs prédéfinies pour les référents
+const REFERENT_COLORS: Record<string, string> = {
+  "Emmanuel WATHELE": "#3B82F6", // Bleu
+  "IHECS": "#10B981",            // Vert
+};
+
+interface ReferentData {
+  nom: string;
+  couleur: string;
+  cours: string[];
+  nombreEtudiants: number;
+}
+
+export default function ReferentsPage() {
+  const [referents, setReferents] = useState<ReferentData[]>([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    const fetchReferents = async () => {
+      try {
+        // Récupérer tous les users pour compter par référent
+        const response = await fetch(
+          "/api/collections/users?page=1&limit=1000&filter={}"
+        );
+        const result = await response.json();
+
+        if (result.data) {
+          // Grouper par référent
+          const referentsMap = new Map<string, ReferentData>();
+
+          result.data.forEach((user: { referent?: string; cours?: string }) => {
+            if (user.referent) {
+              if (!referentsMap.has(user.referent)) {
+                referentsMap.set(user.referent, {
+                  nom: user.referent,
+                  couleur: REFERENT_COLORS[user.referent] || "#6B7280", // Gris par défaut
+                  cours: [],
+                  nombreEtudiants: 0,
+                });
+              }
+
+              const ref = referentsMap.get(user.referent)!;
+              ref.nombreEtudiants++;
+
+              // Ajouter le cours s'il n'existe pas déjà
+              if (user.cours && !ref.cours.includes(user.cours)) {
+                ref.cours.push(user.cours);
+              }
+            }
+          });
+
+          setReferents(Array.from(referentsMap.values()));
+        }
+      } catch (error) {
+        console.error("Erreur lors du chargement des référents:", error);
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchReferents();
+  }, []);
+
+  if (loading) {
+    return (
+      <div className="space-y-6">
+        <div>
+          <h1 className="text-3xl font-bold tracking-tight">Référents</h1>
+          <p className="text-muted-foreground">
+            Gestion des référents et leurs cours
+          </p>
+        </div>
+        <Card>
+          <CardContent className="p-6">
+            <div className="space-y-4">
+              {Array.from({ length: 3 }).map((_, i) => (
+                <div key={i} className="h-24 bg-muted animate-pulse rounded" />
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+    );
+  }
+
+  if (referents.length === 0) {
+    return (
+      <div className="space-y-6">
+        <div>
+          <h1 className="text-3xl font-bold tracking-tight">Référents</h1>
+          <p className="text-muted-foreground">
+            Gestion des référents et leurs cours
+          </p>
+        </div>
+        <Card>
+          <CardContent className="p-6">
+            <div className="text-center py-12">
+              <GraduationCap className="mx-auto h-12 w-12 text-gray-400" />
+              <h3 className="mt-2 text-sm font-semibold text-gray-900">
+                Aucun référent
+              </h3>
+              <p className="mt-1 text-sm text-gray-500">
+                Importez des utilisateurs avec référents pour commencer.
+              </p>
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h1 className="text-3xl font-bold tracking-tight">Référents</h1>
+        <p className="text-muted-foreground">
+          Gestion des référents et leurs cours
+        </p>
+      </div>
+
+      <div className="grid gap-4">
+        {referents.map((referent) => (
+          <Card key={referent.nom} className="hover:shadow-md transition-shadow">
+            <CardHeader>
+              <div className="flex items-center justify-between">
+                <div className="flex items-center gap-3">
+                  {/* Point coloré */}
+                  <div
+                    className="w-4 h-4 rounded-full flex-shrink-0"
+                    style={{ backgroundColor: referent.couleur }}
+                  />
+                  <div>
+                    <CardTitle className="text-xl">{referent.nom}</CardTitle>
+                    <div className="flex items-center gap-2 mt-1">
+                      <Users className="h-4 w-4 text-gray-500" />
+                      <span className="text-sm text-gray-500">
+                        {referent.nombreEtudiants} étudiant
+                        {referent.nombreEtudiants > 1 ? "s" : ""}
+                      </span>
+                    </div>
+                  </div>
+                </div>
+              </div>
+            </CardHeader>
+            <CardContent>
+              <div className="space-y-3">
+                <h4 className="text-sm font-semibold text-gray-700">Cours :</h4>
+                <div className="space-y-2">
+                  {referent.cours.map((cours) => (
+                    <Link
+                      key={cours}
+                      href={`/referents/${encodeURIComponent(referent.nom)}/${encodeURIComponent(cours)}`}
+                    >
+                      <div className="flex items-center justify-between p-3 bg-gray-50 hover:bg-gray-100 rounded-lg transition-colors cursor-pointer">
+                        <div className="flex items-center gap-2">
+                          <div
+                            className="w-2 h-2 rounded-full"
+                            style={{ backgroundColor: referent.couleur }}
+                          />
+                          <span className="text-sm font-medium">{cours}</span>
+                        </div>
+                        <ChevronRight className="h-4 w-4 text-gray-400" />
+                      </div>
+                    </Link>
+                  ))}
+                </div>
+              </div>
+            </CardContent>
+          </Card>
+        ))}
+      </div>
+    </div>
+  );
+}

app/settings/page.tsx

@@ -3,6 +3,7 @@ import { Badge } from "@/components/ui/badge";
 import { Database, Server, Settings } from "lucide-react";
 
 import AddCredits from "@/components/dashboard/add-credits";
+import AddCreditsSingleUser from "@/components/dashboard/add-credits-single-user";
 import UserManagement from "@/components/dashboard/user-management";
 
 export default function SettingsPage() {
@@ -79,8 +80,11 @@ export default function SettingsPage() {
             Gestion des Crédits
           </CardTitle>
         </CardHeader>
-        <CardContent>
+        <CardContent className="space-y-6">
-          <AddCredits />
+          <AddCreditsSingleUser />
+          <div className="border-t pt-6">
+            <AddCredits />
+          </div>
         </CardContent>
       </Card>
     </div>

app/users/page.tsx

@@ -6,7 +6,7 @@ export default function UsersPage() {
       <div>
         <h1 className="text-3xl font-bold tracking-tight">Utilisateurs</h1>
         <p className="text-muted-foreground">
-          Gestion des utilisateurs Cercle GPTT
+          Gestion des utilisateurs Cercle GPT
         </p>
       </div>
 

components/collections/conversations-table.tsx

@@ -1,27 +1,21 @@
 "use client";
 
-import { useState } from "react";
+import { useState, useMemo, useCallback, useRef, useEffect, Fragment } from "react";
-import { useCollection } from "@/hooks/useCollection";
+import { useQuery, keepPreviousData } from "@tanstack/react-query";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
-import {
-  Table,
-  TableBody,
-  TableCell,
-  TableHead,
-  TableHeader,
-  TableRow,
-} from "@/components/ui/table";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
+import { Input } from "@/components/ui/input";
 import {
   ChevronLeft,
   ChevronRight,
-  Users,
+  ChevronDown,
+  Search,
   MessageSquare,
-  Calendar,
   X,
   User,
   Bot,
+  Loader2,
 } from "lucide-react";
 import { formatDate } from "@/lib/utils";
 import {
@@ -30,529 +24,465 @@ import {
   LibreChatMessage,
 } from "@/lib/types";
 
+// Hook debounce personnalisé
+function useDebounce<T>(value: T, delay: number): T {
+  const [debouncedValue, setDebouncedValue] = useState<T>(value);
+
+  useEffect(() => {
+    const timer = setTimeout(() => setDebouncedValue(value), delay);
+    return () => clearTimeout(timer);
+  }, [value, delay]);
+
+  return debouncedValue;
+}
+
 // Types pour les messages étendus
 interface ExtendedMessage extends LibreChatMessage {
   content?: Array<{ type: string; text: string }> | string;
-  message?: Record<string, unknown>;
   parts?: Array<string | { text: string }>;
-  metadata?: { text?: string };
   [key: string]: unknown;
 }
 
+// Type pour les groupes d'utilisateurs
+interface UserGroup {
+  userId: string;
+  conversations: LibreChatConversation[];
+  totalMessages: number;
+}
+
+// Fetcher générique
+async function fetchCollection<T>(
+  collection: string,
+  params: Record<string, string | number>
+): Promise<{ data: T[]; total: number; totalPages: number }> {
+  const searchParams = new URLSearchParams();
+  Object.entries(params).forEach(([key, value]) => {
+    if (value !== undefined && value !== "") {
+      searchParams.set(key, String(value));
+    }
+  });
+
+  const url = `/api/collections/${collection}?${searchParams}`;
+  console.log("[fetchCollection]", collection, "URL:", url);
+
+  const response = await fetch(url);
+  if (!response.ok) throw new Error(`Erreur lors du chargement de ${collection}`);
+  const data = await response.json();
+  console.log("[fetchCollection]", collection, "Results:", data.data?.length, "items");
+  return data;
+}
+
 export function ConversationsTable() {
   const [page, setPage] = useState(1);
-  const [selectedConversationId, setSelectedConversationId] = useState<
+  const [searchInput, setSearchInput] = useState("");
-    string | null
+  const [expandedUsers, setExpandedUsers] = useState<Set<string>>(new Set());
-  >(null);
+  const [expandedConversation, setExpandedConversation] = useState<string | null>(null);
-  const [selectedUserId, setSelectedUserId] = useState<string | null>(null);
+  const searchInputRef = useRef<HTMLInputElement>(null);
 
-  const limit = 10;
+  const usersPerPage = 10; // Nombre de groupes d'utilisateurs par page
+  const debouncedSearch = useDebounce(searchInput, 250);
 
-  // Charger toutes les conversations pour le groupement côté client
+  // Reset page et expanded states quand la recherche change
+  useEffect(() => {
+    setPage(1);
+    setExpandedUsers(new Set());
+    setExpandedConversation(null);
+  }, [debouncedSearch]);
+
+  // Query conversations avec TanStack Query - limite élevée pour groupement client
   const {
-    data: conversations = [],
+    data: conversationsData,
-    total = 0,
+    isLoading: conversationsLoading,
-    loading,
+    isFetching: conversationsFetching,
-  } = useCollection<LibreChatConversation>("conversations", {
+  } = useQuery({
-    limit: 1000,
+    queryKey: ["conversations", debouncedSearch],
-    page: 1, // Remplacer skip par page
+    queryFn: () =>
+      fetchCollection<LibreChatConversation>("conversations", {
+        page: 1,
+        limit: 1000, // Charger beaucoup pour grouper côté client
+        search: debouncedSearch,
+      }),
+    placeholderData: keepPreviousData,
+    staleTime: 30000, // 30 secondes
   });
 
-  const { data: users = [] } = useCollection<LibreChatUser>("users", {
+  // Query users (cache long car ça change rarement)
-    limit: 1000,
+  const { data: usersData } = useQuery({
+    queryKey: ["users", "all"],
+    queryFn: () => fetchCollection<LibreChatUser>("users", { limit: 1000 }),
+    staleTime: 1000 * 60 * 5, // 5 minutes
   });
 
-  // Charger les messages seulement si une conversation est sélectionnée
+  // Query messages de la conversation sélectionnée
-  const { data: messages = [] } = useCollection<LibreChatMessage>("messages", {
+  const { data: messagesData, isLoading: messagesLoading } = useQuery({
-    limit: 1000,
+    queryKey: ["messages", expandedConversation],
-    filter: selectedConversationId
+    queryFn: () =>
-      ? { conversationId: selectedConversationId }
+      fetchCollection<LibreChatMessage>("messages", {
-      : {},
+        limit: 500,
+        filter: JSON.stringify({ conversationId: expandedConversation }),
+      }),
+    enabled: !!expandedConversation,
+    staleTime: 30000,
   });
 
-  const userMap = new Map(users.map((user) => [user._id, user]));
+  const conversations = conversationsData?.data ?? [];
+  const total = conversationsData?.total ?? 0;
+  const users = usersData?.data ?? [];
+  const messages = messagesData?.data ?? [];
 
-  const getUserDisplayName = (userId: string): string => {
+  // Map des users pour lookup rapide
-    if (userId === "unknown") return "Utilisateur inconnu";
+  const userMap = useMemo(() => new Map(users.map((u) => [u._id, u])), [users]);
-    const user = userMap.get(userId);
-    if (user) {
-      return (
-        user.name ||
-        user.username ||
-        user.email ||
-        `Utilisateur ${userId.slice(-8)}`
-      );
-    }
-    return `Utilisateur ${userId.slice(-8)}`;
-  };
-
-  const getUserEmail = (userId: string): string | null => {
-    if (userId === "unknown") return null;
-    const user = userMap.get(userId);
-    return user?.email || null;
-  };
-
-  // Fonction améliorée pour extraire le contenu du message
-  const getMessageContent = (message: LibreChatMessage): string => {
-    // Fonction helper pour nettoyer le texte
-    const cleanText = (text: string): string => {
-      return text.trim().replace(/\n\s*\n/g, "\n");
-    };
-
-    // 1. Vérifier le tableau content (structure LibreChat)
-    const messageObj = message as ExtendedMessage;
-    if (messageObj.content && Array.isArray(messageObj.content)) {
-      for (const contentItem of messageObj.content) {
-        if (
-          contentItem &&
-          typeof contentItem === "object" &&
-          contentItem.text
-        ) {
-          return cleanText(contentItem.text);
-        }
-      }
-    }
-
-    // 2. Essayer le champ text principal
-    if (
-      message.text &&
-      typeof message.text === "string" &&
-      message.text.trim()
-    ) {
-      return cleanText(message.text);
-    }
-
-    // 3. Essayer le champ content (format legacy string)
-    if (
-      messageObj.content &&
-      typeof messageObj.content === "string" &&
-      messageObj.content.trim()
-    ) {
-      return cleanText(messageObj.content);
-    }
-
-    // 4. Vérifier s'il y a des propriétés imbriquées
-    if (message.message && typeof message.message === "object") {
-      const nestedMessage = message.message as Record<string, unknown>;
-      if (nestedMessage.content && typeof nestedMessage.content === "string") {
-        return cleanText(nestedMessage.content);
-      }
-      if (nestedMessage.text && typeof nestedMessage.text === "string") {
-        return cleanText(nestedMessage.text);
-      }
-    }
-
-    // 5. Vérifier les propriétés spécifiques à LibreChat
-    // Parfois le contenu est dans une propriété 'parts'
-    if (
-      messageObj.parts &&
-      Array.isArray(messageObj.parts) &&
-      messageObj.parts.length > 0
-    ) {
-      const firstPart = messageObj.parts[0];
-      if (typeof firstPart === "string") {
-        return cleanText(firstPart);
-      }
-      if (firstPart && typeof firstPart === "object" && firstPart.text) {
-        return cleanText(firstPart.text);
-      }
-    }
-
-    // 6. Vérifier si c'est un message avec des métadonnées
-    if (messageObj.metadata && messageObj.metadata.text) {
-      return cleanText(messageObj.metadata.text);
-    }
-
-    // 7. Vérifier les propriétés alternatives
-    const alternativeFields = ["body", "messageText", "textContent", "data"];
-    for (const field of alternativeFields) {
-      const value = messageObj[field];
-      if (value && typeof value === "string" && value.trim()) {
-        return cleanText(value);
-      }
-    }
-
-    // Debug: afficher la structure du message si aucun contenu n'est trouvé
-    console.log("Message sans contenu trouvé:", {
-      messageId: message.messageId,
-      isCreatedByUser: message.isCreatedByUser,
-      keys: Object.keys(messageObj),
-      content: messageObj.content,
-      text: messageObj.text,
-    });
-
-    return "Contenu non disponible";
-  };
-
-  const handleShowMessages = (conversationId: string, userId: string) => {
-    if (
-      selectedConversationId === conversationId &&
-      selectedUserId === userId
-    ) {
-      setSelectedConversationId(null);
-      setSelectedUserId(null);
-    } else {
-      setSelectedConversationId(conversationId);
-      setSelectedUserId(userId);
-    }
-  };
-
-  const handleCloseMessages = () => {
-    setSelectedConversationId(null);
-    setSelectedUserId(null);
-  };
-
-  const getStatus = (conversation: LibreChatConversation) => {
-    if (conversation.isArchived) return "archived";
-    return "active";
-  };
-
-  const getStatusLabel = (status: string) => {
-    switch (status) {
-      case "archived":
-        return "Archivée";
-      case "active":
-        return "Active";
-      default:
-        return "Inconnue";
-    }
-  };
-
-  const getStatusVariant = (status: string) => {
-    switch (status) {
-      case "archived":
-        return "outline" as const;
-      case "active":
-        return "default" as const;
-      default:
-        return "secondary" as const;
-    }
-  };
-
-  if (loading) {
-    return (
-      <Card>
-        <CardContent className="p-6">
-          <div className="text-center">Chargement des conversations...</div>
-        </CardContent>
-      </Card>
-    );
-  }
 
   // Grouper les conversations par utilisateur
-  const groupedConversations = conversations.reduce((acc, conversation) => {
+  const groupedByUser = useMemo((): UserGroup[] => {
-    const userId = conversation.user || "unknown";
+    const groups: Record<string, LibreChatConversation[]> = {};
-    if (!acc[userId]) {
+    conversations.forEach((conv) => {
-      acc[userId] = [];
+      const uId = String(conv.user);
-    }
+      if (!groups[uId]) groups[uId] = [];
-    acc[userId].push(conversation);
+      groups[uId].push(conv);
-    return acc;
+    });
-  }, {} as Record<string, LibreChatConversation[]>);
+    return Object.entries(groups)
+      .map(([userId, convs]) => ({
+        userId,
+        conversations: convs.sort(
+          (a, b) => new Date(b.updatedAt).getTime() - new Date(a.updatedAt).getTime()
+        ),
+        totalMessages: convs.reduce((sum, c) => sum + (c.messages?.length || 0), 0),
+      }))
+      .sort((a, b) => {
+        // Trier par date de dernière conversation
+        const aDate = new Date(a.conversations[0]?.updatedAt || 0).getTime();
+        const bDate = new Date(b.conversations[0]?.updatedAt || 0).getTime();
+        return bDate - aDate;
+      });
+  }, [conversations]);
 
-  // Pagination des groupes d'utilisateurs
+  // Pagination sur les groupes d'utilisateurs
-  const totalPages = Math.ceil(
+  const totalUserGroups = groupedByUser.length;
-    Object.keys(groupedConversations).length / limit
+  const totalPages = Math.ceil(totalUserGroups / usersPerPage);
+  const paginatedGroups = groupedByUser.slice(
+    (page - 1) * usersPerPage,
+    page * usersPerPage
   );
-  const skip = (page - 1) * limit;
+
-  const userIds = Object.keys(groupedConversations).slice(skip, skip + limit);
+  // Toggle user group expansion
+  const toggleUserExpanded = useCallback((userId: string) => {
+    setExpandedUsers((prev) => {
+      const next = new Set(prev);
+      if (next.has(userId)) {
+        next.delete(userId);
+        // Fermer aussi la conversation si elle appartient à cet utilisateur
+        setExpandedConversation(null);
+      } else {
+        next.add(userId);
+      }
+      return next;
+    });
+  }, []);
+
+  // Toggle conversation expansion
+  const toggleConversationExpanded = useCallback((conversationId: string) => {
+    console.log("[Conversations] Toggle conversation:", conversationId);
+    setExpandedConversation((prev) =>
+      prev === conversationId ? null : conversationId
+    );
+  }, []);
+
+  const getUserInfo = useCallback(
+    (userId: string) => {
+      const user = userMap.get(userId);
+      return {
+        name: user?.name || user?.username || `User ${userId.slice(-6)}`,
+        email: user?.email || null,
+      };
+    },
+    [userMap]
+  );
+
+  // Extraction du contenu des messages
+  const getMessageContent = useCallback((message: LibreChatMessage): string => {
+    const msg = message as ExtendedMessage;
+
+    if (msg.content && Array.isArray(msg.content)) {
+      for (const item of msg.content) {
+        if (item?.text) return item.text.trim();
+      }
+    }
+    if (message.text?.trim()) return message.text.trim();
+    if (typeof msg.content === "string" && msg.content.trim()) return msg.content.trim();
+    if (msg.parts?.[0]) {
+      const part = msg.parts[0];
+      if (typeof part === "string") return part.trim();
+      if (part?.text) return part.text.trim();
+    }
+    return "Contenu non disponible";
+  }, []);
+
+  const clearSearch = () => {
+    setSearchInput("");
+    searchInputRef.current?.focus();
+  };
+
+  const isSearching = searchInput !== debouncedSearch || conversationsFetching;
 
   return (
-    <div className="space-y-6">
+    <div className="space-y-4">
       <Card>
-        <CardHeader>
+        <CardHeader className="pb-4">
-          <CardTitle className="flex items-center gap-2">
+          <div className="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
-            <Users className="h-5 w-5" />
+            <CardTitle className="flex items-center gap-2">
-            Conversations par utilisateur
+              <MessageSquare className="h-5 w-5" />
-          </CardTitle>
+              Conversations
-          <p className="text-sm text-muted-foreground">
+              <Badge variant="secondary" className="ml-2">
-            {Object.keys(groupedConversations).length} utilisateurs •{" "}
+                {total}
-            {conversations.length} conversations au total
+              </Badge>
-          </p>
+              {conversationsFetching && !conversationsLoading && (
-        </CardHeader>
+                <Loader2 className="h-4 w-4 animate-spin text-muted-foreground" />
-        <CardContent>
+              )}
-          <div className="space-y-6">
+            </CardTitle>
-            {userIds.map((userId) => {
-              const conversations = groupedConversations[userId];
-              const totalMessages = conversations.reduce(
-                (sum, conv) => sum + (conv.messages?.length || 0),
-                0
-              );
-              const activeConversations = conversations.filter(
-                (conv) => !conv.isArchived
-              ).length;
-              const archivedConversations = conversations.filter(
-                (conv) => conv.isArchived
-              ).length;
-              const userName = getUserDisplayName(userId);
-              const userEmail = getUserEmail(userId);
 
-              return (
+            {/* Barre de recherche */}
-                <div key={userId} className="border rounded-lg p-4">
+            <div className="relative w-full sm:w-96">
-                  <div className="flex items-center justify-between mb-4">
+              <Search className="absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
-                    <div className="flex items-center gap-2">
+              <Input
-                      <Badge variant="outline" className="font-mono text-xs">
+                ref={searchInputRef}
-                        {userId === "unknown" ? "unknown" : userId.slice(-8)}
+                placeholder="Rechercher par nom ou email..."
-                      </Badge>
+                value={searchInput}
-                      <div className="flex flex-col">
+                onChange={(e) => setSearchInput(e.target.value)}
-                        <span className="font-semibold">{userName}</span>
+                className="pl-10 pr-10"
-                        {userEmail && (
+              />
-                          <span className="text-xs text-muted-foreground">
+              <div className="absolute right-3 top-1/2 -translate-y-1/2">
-                            {userEmail}
+                {isSearching ? (
-                          </span>
+                  <Loader2 className="h-4 w-4 animate-spin text-muted-foreground" />
-                        )}
+                ) : searchInput ? (
-                      </div>
+                  <button
-                      <Badge variant="secondary">
+                    onClick={clearSearch}
-                        {conversations.length} conversation
+                    className="text-muted-foreground hover:text-foreground transition-colors"
-                        {conversations.length > 1 ? "s" : ""}
+                    type="button"
-                      </Badge>
+                  >
-                      {activeConversations > 0 && (
+                    <X className="h-4 w-4" />
-                        <Badge variant="default" className="text-xs">
+                  </button>
-                          {activeConversations} actives
+                ) : null}
-                        </Badge>
-                      )}
-                      {archivedConversations > 0 && (
-                        <Badge variant="outline" className="text-xs">
-                          {archivedConversations} archivées
-                        </Badge>
-                      )}
-                    </div>
-                    <div className="flex items-center gap-4 text-sm text-muted-foreground">
-                      <div className="flex items-center gap-1">
-                        <MessageSquare className="h-4 w-4" />
-                        {totalMessages} message{totalMessages > 1 ? "s" : ""}
-                      </div>
-                      <div className="flex items-center gap-1">
-                        <Calendar className="h-4 w-4" />
-                        Dernière:{" "}
-                        {formatDate(
-                          new Date(
-                            Math.max(
-                              ...conversations.map((c) =>
-                                new Date(c.updatedAt).getTime()
-                              )
-                            )
-                          )
-                        )}
-                      </div>
-                    </div>
-                  </div>
-
-                  <div className="overflow-x-auto">
-                    <Table>
-                      <TableHeader>
-                        <TableRow>
-                          <TableHead>ID</TableHead>
-                          <TableHead>Titre</TableHead>
-                          <TableHead>Endpoint</TableHead>
-                          <TableHead>Modèle</TableHead>
-                          <TableHead>Messages</TableHead>
-                          <TableHead>Statut</TableHead>
-                          <TableHead>Créée le</TableHead>
-                        </TableRow>
-                      </TableHeader>
-                      <TableBody>
-                        {conversations
-                          .sort(
-                            (a, b) =>
-                              new Date(b.updatedAt).getTime() -
-                              new Date(a.updatedAt).getTime()
-                          )
-                          .map((conversation) => {
-                            const status = getStatus(conversation);
-                            const messageCount =
-                              conversation.messages?.length || 0;
-
-                            return (
-                              <TableRow key={conversation._id}>
-                                <TableCell>
-                                  <span className="font-mono text-xs">
-                                    {String(conversation._id).slice(-8)}
-                                  </span>
-                                </TableCell>
-                                <TableCell>
-                                  <span className="max-w-xs truncate block">
-                                    {String(conversation.title) || "Sans titre"}
-                                  </span>
-                                </TableCell>
-                                <TableCell>
-                                  <Badge variant="outline" className="text-xs">
-                                    {String(conversation.endpoint).slice(0, 20)}
-                                    {String(conversation.endpoint).length > 20
-                                      ? "..."
-                                      : ""}
-                                  </Badge>
-                                </TableCell>
-                                <TableCell>
-                                  <span className="text-xs text-muted-foreground font-mono">
-                                    {String(conversation.model)}
-                                  </span>
-                                </TableCell>
-                                <TableCell>
-                                  <Badge
-                                    variant="outline"
-                                    className="text-xs cursor-pointer hover:bg-primary hover:text-primary-foreground transition-colors"
-                                    onClick={() =>
-                                      handleShowMessages(
-                                        conversation.conversationId,
-                                        userId
-                                      )
-                                    }
-                                  >
-                                    {messageCount}
-                                  </Badge>
-                                </TableCell>
-                                <TableCell>
-                                  <Badge
-                                    variant={getStatusVariant(status)}
-                                    className="text-xs"
-                                  >
-                                    {getStatusLabel(status)}
-                                  </Badge>
-                                </TableCell>
-                                <TableCell>
-                                  <span className="text-xs text-muted-foreground">
-                                    {formatDate(conversation.createdAt)}
-                                  </span>
-                                </TableCell>
-                              </TableRow>
-                            );
-                          })}
-                      </TableBody>
-                    </Table>
-                  </div>
-
-                  {/* Section des messages pour cet utilisateur */}
-                  {selectedConversationId && selectedUserId === userId && (
-                    <div className="mt-6 border-t pt-6">
-                      <div className="flex items-center justify-between mb-4">
-                        <h3 className="text-lg font-semibold flex items-center gap-2">
-                          <MessageSquare className="h-5 w-5" />
-                          Messages de la conversation
-                        </h3>
-                        <Button
-                          variant="outline"
-                          size="sm"
-                          onClick={handleCloseMessages}
-                        >
-                          <X className="h-4 w-4" />
-                          Fermer
-                        </Button>
-                      </div>
-                      <p className="text-sm text-muted-foreground mb-4">
-                        Conversation ID: {selectedConversationId}
-                      </p>
-                      <div className="space-y-4 max-h-96 overflow-y-auto border rounded-lg p-4 bg-gray-50">
-                        {messages.length === 0 ? (
-                          <p className="text-center text-muted-foreground py-8">
-                            Aucun message trouvé pour cette conversation
-                          </p>
-                        ) : (
-                          messages
-                            .sort(
-                              (a, b) =>
-                                new Date(a.createdAt).getTime() -
-                                new Date(b.createdAt).getTime()
-                            )
-                            .map((message) => {
-                              const content = getMessageContent(message);
-                              return (
-                                <div
-                                  key={message._id}
-                                  className={`flex gap-3 p-4 rounded-lg ${
-                                    message.isCreatedByUser
-                                      ? "bg-blue-50 border-l-4 border-l-blue-500"
-                                      : "bg-white border-l-4 border-l-gray-500"
-                                  }`}
-                                >
-                                  <div className="flex-shrink-0">
-                                    {message.isCreatedByUser ? (
-                                      <User className="h-5 w-5 text-blue-600" />
-                                    ) : (
-                                      <Bot className="h-5 w-5 text-gray-600" />
-                                    )}
-                                  </div>
-                                  <div className="flex-1 space-y-2">
-                                    <div className="flex items-center gap-2">
-                                      <Badge
-                                        variant={
-                                          message.isCreatedByUser
-                                            ? "default"
-                                            : "secondary"
-                                        }
-                                        className="text-xs"
-                                      >
-                                        {message.isCreatedByUser
-                                          ? "Utilisateur"
-                                          : "Assistant"}
-                                      </Badge>
-                                      <span className="text-xs text-muted-foreground">
-                                        {formatDate(message.createdAt)}
-                                      </span>
-                                      {message.tokenCount > 0 && (
-                                        <Badge
-                                          variant="outline"
-                                          className="text-xs"
-                                        >
-                                          {message.tokenCount} tokens
-                                        </Badge>
-                                      )}
-                                      <Badge
-                                        variant="outline"
-                                        className="text-xs font-mono"
-                                      >
-                                        {message._id.slice(-8)}
-                                      </Badge>
-                                    </div>
-                                    <div className="text-sm whitespace-pre-wrap">
-                                      {content}
-                                    </div>
-                                    {message.error && (
-                                      <Badge
-                                        variant="destructive"
-                                        className="text-xs"
-                                      >
-                                        Erreur
-                                      </Badge>
-                                    )}
-                                  </div>
-                                </div>
-                              );
-                            })
-                        )}
-                      </div>
-                    </div>
-                  )}
-                </div>
-              );
-            })}
-          </div>
-
-          {totalPages > 1 && (
-            <div className="flex items-center justify-between mt-6">
-              <p className="text-sm text-muted-foreground">
-                Page {page} sur {totalPages} • {total} conversations au total
-              </p>
-              <div className="flex items-center gap-2">
-                <Button
-                  variant="outline"
-                  size="sm"
-                  onClick={() => setPage(page - 1)}
-                  disabled={page === 1}
-                >
-                  <ChevronLeft className="h-4 w-4" />
-                  Précédent
-                </Button>
-                <Button
-                  variant="outline"
-                  size="sm"
-                  onClick={() => setPage(page + 1)}
-                  disabled={page === totalPages}
-                >
-                  Suivant
-                  <ChevronRight className="h-4 w-4" />
-                </Button>
               </div>
             </div>
+          </div>
+
+          {debouncedSearch && (
+            <p className="text-sm text-muted-foreground mt-2">
+              {total} résultat{total > 1 ? "s" : ""} pour &quot;{debouncedSearch}&quot;
+            </p>
+          )}
+        </CardHeader>
+
+        <CardContent>
+          {conversationsLoading ? (
+            <div className="space-y-3">
+              {Array.from({ length: 5 }).map((_, i) => (
+                <div key={i} className="h-14 bg-muted animate-pulse rounded-lg" />
+              ))}
+            </div>
+          ) : conversations.length === 0 ? (
+            <div className="text-center py-12 text-muted-foreground">
+              {debouncedSearch ? (
+                <>
+                  <Search className="h-12 w-12 mx-auto mb-4 opacity-20" />
+                  <p>Aucun résultat pour &quot;{debouncedSearch}&quot;</p>
+                  <Button variant="link" onClick={clearSearch} className="mt-2">
+                    Effacer la recherche
+                  </Button>
+                </>
+              ) : (
+                <p>Aucune conversation</p>
+              )}
+            </div>
+          ) : (
+            <>
+              {/* Liste des groupes d'utilisateurs */}
+              <div className="space-y-2">
+                {paginatedGroups.map((group) => {
+                  const userInfo = getUserInfo(group.userId);
+                  const isUserExpanded = expandedUsers.has(group.userId);
+
+                  return (
+                    <div key={group.userId} className="border rounded-lg overflow-hidden">
+                      {/* Header du groupe utilisateur */}
+                      <button
+                        onClick={() => toggleUserExpanded(group.userId)}
+                        className="w-full flex items-center gap-3 p-4 bg-muted/30 hover:bg-muted/50 transition-colors text-left"
+                      >
+                        <ChevronDown
+                          className={`h-5 w-5 text-muted-foreground transition-transform flex-shrink-0 ${
+                            isUserExpanded ? "rotate-0" : "-rotate-90"
+                          }`}
+                        />
+                        <div className="flex-1 min-w-0">
+                          <div className="flex items-center gap-2 flex-wrap">
+                            <span className="font-semibold">{userInfo.name}</span>
+                            {userInfo.email && (
+                              <span className="text-sm text-muted-foreground">
+                                ({userInfo.email})
+                              </span>
+                            )}
+                          </div>
+                        </div>
+                        <div className="flex items-center gap-2 flex-shrink-0">
+                          <Badge variant="secondary">
+                            {group.conversations.length} conversation{group.conversations.length > 1 ? "s" : ""}
+                          </Badge>
+                          <Badge variant="outline" className="text-xs">
+                            {group.totalMessages} msg{group.totalMessages > 1 ? "s" : ""}
+                          </Badge>
+                        </div>
+                      </button>
+
+                      {/* Liste des conversations de l'utilisateur */}
+                      {isUserExpanded && (
+                        <div className="border-t">
+                          {group.conversations.map((conv) => {
+                            const msgCount = conv.messages?.length || 0;
+                            const isConvExpanded = expandedConversation === conv.conversationId;
+
+                            return (
+                              <Fragment key={conv._id}>
+                                <button
+                                  onClick={() => toggleConversationExpanded(conv.conversationId)}
+                                  className={`w-full flex items-center gap-3 p-3 pl-10 hover:bg-muted/30 transition-colors text-left border-b last:border-b-0 ${
+                                    isConvExpanded ? "bg-muted/20" : ""
+                                  }`}
+                                >
+                                  <ChevronDown
+                                    className={`h-4 w-4 text-muted-foreground transition-transform flex-shrink-0 ${
+                                      isConvExpanded ? "rotate-0" : "-rotate-90"
+                                    }`}
+                                  />
+                                  <div className="flex-1 min-w-0">
+                                    <span className="truncate block text-sm font-medium">
+                                      {String(conv.title) || "Sans titre"}
+                                    </span>
+                                  </div>
+                                  <div className="flex items-center gap-2 flex-shrink-0">
+                                    <Badge variant="outline" className="text-xs font-mono">
+                                      {String(conv.endpoint).slice(0, 8)}
+                                    </Badge>
+                                    <Badge variant="secondary" className="text-xs">
+                                      {msgCount} msg{msgCount > 1 ? "s" : ""}
+                                    </Badge>
+                                    <Badge
+                                      variant={conv.isArchived ? "outline" : "default"}
+                                      className="text-xs"
+                                    >
+                                      {conv.isArchived ? "Archivée" : "Active"}
+                                    </Badge>
+                                    <span className="text-xs text-muted-foreground">
+                                      {formatDate(conv.updatedAt)}
+                                    </span>
+                                  </div>
+                                </button>
+
+                                {/* Messages de la conversation */}
+                                {isConvExpanded && (
+                                  <div className="bg-slate-50 p-4 pl-14 border-b">
+                                    {messagesLoading ? (
+                                      <div className="flex items-center justify-center py-8 gap-2 text-muted-foreground">
+                                        <Loader2 className="h-5 w-5 animate-spin" />
+                                        <span>Chargement des messages...</span>
+                                      </div>
+                                    ) : messages.length === 0 ? (
+                                      <p className="text-center py-8 text-muted-foreground">
+                                        Aucun message dans cette conversation
+                                      </p>
+                                    ) : (
+                                      <div className="space-y-3 max-h-[400px] overflow-y-auto">
+                                        {messages
+                                          .sort(
+                                            (a, b) =>
+                                              new Date(a.createdAt).getTime() -
+                                              new Date(b.createdAt).getTime()
+                                          )
+                                          .map((msg) => {
+                                            const content = getMessageContent(msg);
+                                            const isUser = msg.isCreatedByUser;
+
+                                            return (
+                                              <div
+                                                key={msg._id}
+                                                className={`flex gap-3 p-3 rounded-lg border-l-4 ${
+                                                  isUser
+                                                    ? "bg-blue-50 border-l-blue-500"
+                                                    : "bg-white border-l-gray-300"
+                                                }`}
+                                              >
+                                                <div className="flex-shrink-0 mt-0.5">
+                                                  {isUser ? (
+                                                    <User className="h-4 w-4 text-blue-600" />
+                                                  ) : (
+                                                    <Bot className="h-4 w-4 text-gray-500" />
+                                                  )}
+                                                </div>
+                                                <div className="flex-1 min-w-0">
+                                                  <div className="flex items-center gap-2 mb-1 flex-wrap">
+                                                    <span className="text-xs font-medium">
+                                                      {isUser ? "Utilisateur" : "Assistant"}
+                                                    </span>
+                                                    <span className="text-xs text-muted-foreground">
+                                                      {formatDate(msg.createdAt)}
+                                                    </span>
+                                                    {msg.tokenCount > 0 && (
+                                                      <span className="text-xs text-muted-foreground">
+                                                        ({msg.tokenCount} tokens)
+                                                      </span>
+                                                    )}
+                                                  </div>
+                                                  <div className="text-sm whitespace-pre-wrap break-words">
+                                                    {content}
+                                                  </div>
+                                                </div>
+                                              </div>
+                                            );
+                                          })}
+                                      </div>
+                                    )}
+                                  </div>
+                                )}
+                              </Fragment>
+                            );
+                          })}
+                        </div>
+                      )}
+                    </div>
+                  );
+                })}
+              </div>
+
+              {/* Pagination */}
+              {totalPages > 1 && (
+                <div className="flex items-center justify-between mt-4">
+                  <p className="text-sm text-muted-foreground">
+                    Page {page} / {totalPages} ({totalUserGroups} utilisateurs)
+                  </p>
+                  <div className="flex gap-2">
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      onClick={() => setPage((p) => Math.max(1, p - 1))}
+                      disabled={page === 1}
+                    >
+                      <ChevronLeft className="h-4 w-4" />
+                      Préc.
+                    </Button>
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      onClick={() => setPage((p) => Math.min(totalPages, p + 1))}
+                      disabled={page === totalPages}
+                    >
+                      Suiv.
+                      <ChevronRight className="h-4 w-4" />
+                    </Button>
+                  </div>
+                </div>
+              )}
+            </>
           )}
         </CardContent>
       </Card>

components/collections/users-table.tsx

@@ -14,20 +14,28 @@ import {
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { Input } from "@/components/ui/input";
-import { ChevronLeft, ChevronRight, Search } from "lucide-react";
+import { ChevronLeft, ChevronRight, Search, X } from "lucide-react";
 import { formatDate } from "@/lib/utils";
 import { LibreChatUser, LibreChatBalance } from "@/lib/types";
 
+// Couleurs prédéfinies pour les référents
+const REFERENT_COLORS: Record<string, string> = {
+  "Emmanuel WATHELE": "#3B82F6",     // Bleu
+  "IHECS": "#10B981",                // Vert
+  "Patrice De La Broise": "#F59E0B", // Orange
+};
+
 export function UsersTable() {
   const [page, setPage] = useState(1);
   const [searchInput, setSearchInput] = useState(""); // Ce que l'utilisateur tape
   const [activeSearch, setActiveSearch] = useState(""); // Ce qui est réellement recherché
+  const [activeReferent, setActiveReferent] = useState<string | undefined>(undefined);
   const limit = 20;
 
-  // Réinitialiser la page à 1 quand une nouvelle recherche est lancée
+  // Réinitialiser la page à 1 quand une nouvelle recherche ou filtre est lancé
   useEffect(() => {
     setPage(1);
-  }, [activeSearch]);
+  }, [activeSearch, activeReferent]);
 
   const {
     data: users = [],
@@ -37,8 +45,21 @@ export function UsersTable() {
     page,
     limit,
     search: activeSearch,
+    referent: activeReferent,
   });
 
+  const handleReferentClick = (referent: string) => {
+    if (activeReferent === referent) {
+      setActiveReferent(undefined); // Toggle off
+    } else {
+      setActiveReferent(referent);
+    }
+  };
+
+  const clearReferentFilter = () => {
+    setActiveReferent(undefined);
+  };
+
   // Fonction pour lancer la recherche
   const handleSearch = () => {
     setActiveSearch(searchInput);
@@ -99,7 +120,22 @@ export function UsersTable() {
           <CardTitle>
             Liste des utilisateurs ({total})
           </CardTitle>
-          <div className="flex gap-2 w-full sm:w-auto">
+          <div className="flex gap-2 w-full sm:w-auto items-center">
+            {activeReferent && (
+              <Badge
+                variant="secondary"
+                className="flex items-center gap-1 px-3 py-1"
+                style={{ backgroundColor: REFERENT_COLORS[activeReferent] || "#6B7280", color: "white" }}
+              >
+                {activeReferent}
+                <button
+                  onClick={clearReferentFilter}
+                  className="ml-1 hover:bg-white/20 rounded-full p-0.5"
+                >
+                  <X className="h-3 w-3" />
+                </button>
+              </Badge>
+            )}
             <div className="relative flex-1 sm:w-80">
               <Search className="absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
               <Input
@@ -121,22 +157,20 @@ export function UsersTable() {
           <Table>
             <TableHeader>
               <TableRow>
-                <TableHead>ID</TableHead>
+                <TableHead className="w-20">ID</TableHead>
                 <TableHead>Nom</TableHead>
                 <TableHead>Email</TableHead>
-                <TableHead>Rôle</TableHead>
+                <TableHead className="w-32">Référent</TableHead>
-                <TableHead>Crédits</TableHead>
+                <TableHead className="w-20">Rôle</TableHead>
-                <TableHead>Statut</TableHead>
+                <TableHead className="w-32">Crédits</TableHead>
-                <TableHead>Créé le</TableHead>
+                <TableHead className="w-28">Créé le</TableHead>
               </TableRow>
             </TableHeader>
             <TableBody>
               {users.length > 0 ? (
                 users.map((user) => {
                   const userCredits = creditsMap.get(user._id) || 0;
-                  const isActive =
+                  const referentColor = user.referent ? (REFERENT_COLORS[user.referent] || "#6B7280") : null;
-                    new Date(user.updatedAt || user.createdAt) >
-                    new Date(Date.now() - 30 * 24 * 60 * 60 * 1000);
 
                   return (
                     <TableRow key={user._id}>
@@ -146,11 +180,37 @@ export function UsersTable() {
                         </span>
                       </TableCell>
                       <TableCell>
-                        <span className="font-medium">{user.name}</span>
+                        <div className="flex items-center gap-2">
+                          {referentColor && (
+                            <div
+                              className="w-3 h-3 rounded-full flex-shrink-0"
+                              style={{ backgroundColor: referentColor }}
+                              title={user.referent}
+                            />
+                          )}
+                          <span className="font-medium">{user.name}</span>
+                        </div>
                       </TableCell>
                       <TableCell>
                         <span className="text-sm">{user.email}</span>
                       </TableCell>
+                      <TableCell>
+                        {user.referent ? (
+                          <button
+                            onClick={() => handleReferentClick(user.referent!)}
+                            className={`text-sm truncate block max-w-[120px] hover:underline cursor-pointer transition-colors ${
+                              activeReferent === user.referent
+                                ? "font-bold text-primary"
+                                : "text-foreground hover:text-primary"
+                            }`}
+                            title={`Cliquer pour filtrer par ${user.referent}`}
+                          >
+                            {user.referent}
+                          </button>
+                        ) : (
+                          <span className="text-sm text-gray-400">-</span>
+                        )}
+                      </TableCell>
                       <TableCell>
                         <Badge
                           variant={
@@ -165,13 +225,6 @@ export function UsersTable() {
                           {userCredits.toLocaleString()} crédits
                         </span>
                       </TableCell>
-                      <TableCell>
-                        <span className="text-sm text-muted-foreground">
-                          <Badge variant={isActive ? "default" : "secondary"}>
-                            {isActive ? "Actif" : "Inactif"}
-                          </Badge>
-                        </span>
-                      </TableCell>
                       <TableCell>
                         <span className="text-sm text-muted-foreground">
                           {formatDate(user.createdAt)}

components/dashboard/add-credits-single-user.tsx

@@ -0,0 +1,274 @@
+"use client";
+
+import { useState } from "react";
+import { Button } from "@/components/ui/button";
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle,
+} from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+import { Badge } from "@/components/ui/badge";
+import { Search, User, CheckCircle, Coins } from "lucide-react";
+
+interface UserResult {
+  _id: string;
+  name: string;
+  username: string;
+  email: string;
+  role: string;
+  referent?: string;
+  prenom?: string;
+  nom?: string;
+  createdAt: string;
+}
+
+interface BalanceInfo {
+  tokenCredits: number;
+  lastRefill?: string;
+}
+
+export default function AddCreditsSingleUser() {
+  const [searchTerm, setSearchTerm] = useState("");
+  const [searchResults, setSearchResults] = useState<UserResult[]>([]);
+  const [selectedUser, setSelectedUser] = useState<UserResult | null>(null);
+  const [userBalance, setUserBalance] = useState<BalanceInfo | null>(null);
+  const [searching, setSearching] = useState(false);
+  const [loadingBalance, setLoadingBalance] = useState(false);
+  const [adding, setAdding] = useState(false);
+  const [success, setSuccess] = useState<{ newBalance: number } | null>(null);
+
+  const searchUsers = async () => {
+    if (!searchTerm.trim()) return;
+
+    setSearching(true);
+    setSelectedUser(null);
+    setUserBalance(null);
+    setSuccess(null);
+
+    try {
+      const response = await fetch(
+        `/api/collections/users?search=${encodeURIComponent(searchTerm)}&limit=10`
+      );
+      const data = await response.json();
+
+      if (data.data) {
+        setSearchResults(data.data);
+      }
+    } catch (error) {
+      console.error("Erreur lors de la recherche:", error);
+    } finally {
+      setSearching(false);
+    }
+  };
+
+  const selectUser = async (user: UserResult) => {
+    setSelectedUser(user);
+    setSearchResults([]);
+    setSuccess(null);
+    setLoadingBalance(true);
+
+    try {
+      // Récupérer la balance de l'utilisateur
+      const response = await fetch(
+        `/api/collections/balances?search=${user._id}&limit=1`
+      );
+      const data = await response.json();
+
+      if (data.data && data.data.length > 0) {
+        setUserBalance({
+          tokenCredits: data.data[0].tokenCredits || 0,
+          lastRefill: data.data[0].lastRefill,
+        });
+      } else {
+        setUserBalance({ tokenCredits: 0 });
+      }
+    } catch (error) {
+      console.error("Erreur lors de la récupération de la balance:", error);
+      setUserBalance({ tokenCredits: 0 });
+    } finally {
+      setLoadingBalance(false);
+    }
+  };
+
+  const addCredits = async () => {
+    if (!selectedUser) return;
+
+    if (
+      !confirm(
+        `Êtes-vous sûr de vouloir ajouter 3 millions de crédits à ${selectedUser.name || selectedUser.email} ?`
+      )
+    ) {
+      return;
+    }
+
+    setAdding(true);
+
+    try {
+      const response = await fetch("/api/add-credits-single", {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify({ userId: selectedUser._id }),
+      });
+
+      const data = await response.json();
+
+      if (data.success) {
+        setSuccess({ newBalance: data.newBalance });
+        setUserBalance({ tokenCredits: data.newBalance });
+      } else {
+        alert("Erreur: " + (data.error || data.message));
+      }
+    } catch (error) {
+      console.error("Erreur lors de l'ajout des crédits:", error);
+      alert("Erreur lors de l'ajout des crédits");
+    } finally {
+      setAdding(false);
+    }
+  };
+
+  const reset = () => {
+    setSearchTerm("");
+    setSearchResults([]);
+    setSelectedUser(null);
+    setUserBalance(null);
+    setSuccess(null);
+  };
+
+  return (
+    <Card className="w-full">
+      <CardHeader>
+        <CardTitle className="flex items-center gap-2">
+          <Coins className="h-5 w-5" />
+          Ajouter des Crédits à un Utilisateur
+        </CardTitle>
+        <CardDescription>
+          Rechercher un utilisateur et lui ajouter 3 millions de tokens
+        </CardDescription>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        {/* Barre de recherche */}
+        <div className="flex gap-2">
+          <Input
+            placeholder="Rechercher par nom, email ou username..."
+            value={searchTerm}
+            onChange={(e) => setSearchTerm(e.target.value)}
+            onKeyDown={(e) => e.key === "Enter" && searchUsers()}
+          />
+          <Button onClick={searchUsers} disabled={searching}>
+            <Search className="h-4 w-4 mr-2" />
+            {searching ? "..." : "Rechercher"}
+          </Button>
+        </div>
+
+        {/* Résultats de recherche */}
+        {searchResults.length > 0 && (
+          <div className="border rounded-lg divide-y">
+            {searchResults.map((user) => (
+              <div
+                key={user._id}
+                className="p-3 hover:bg-gray-50 cursor-pointer flex items-center justify-between"
+                onClick={() => selectUser(user)}
+              >
+                <div className="flex items-center gap-3">
+                  <User className="h-5 w-5 text-gray-400" />
+                  <div>
+                    <p className="font-medium">{user.name || user.username}</p>
+                    <p className="text-sm text-gray-500">{user.email}</p>
+                  </div>
+                </div>
+                <Badge variant="outline">{user.role}</Badge>
+              </div>
+            ))}
+          </div>
+        )}
+
+        {/* Utilisateur sélectionné */}
+        {selectedUser && (
+          <div className="border rounded-lg p-4 bg-blue-50 space-y-3">
+            <h4 className="font-semibold text-blue-800 flex items-center gap-2">
+              <CheckCircle className="h-5 w-5" />
+              Utilisateur sélectionné
+            </h4>
+
+            <div className="grid grid-cols-2 gap-3 text-sm">
+              <div>
+                <span className="text-gray-600">ID:</span>
+                <p className="font-mono text-xs bg-white p-1 rounded mt-1">
+                  {selectedUser._id}
+                </p>
+              </div>
+              <div>
+                <span className="text-gray-600">Nom:</span>
+                <p className="font-medium">
+                  {selectedUser.name || selectedUser.username}
+                </p>
+              </div>
+              <div>
+                <span className="text-gray-600">Email:</span>
+                <p className="font-medium">{selectedUser.email}</p>
+              </div>
+              <div>
+                <span className="text-gray-600">Rôle:</span>
+                <Badge variant="secondary" className="ml-2">
+                  {selectedUser.role}
+                </Badge>
+              </div>
+              {selectedUser.referent && (
+                <div>
+                  <span className="text-gray-600">Référent:</span>
+                  <p className="font-medium">{selectedUser.referent}</p>
+                </div>
+              )}
+              <div>
+                <span className="text-gray-600">Crédits actuels:</span>
+                {loadingBalance ? (
+                  <p className="text-gray-500">Chargement...</p>
+                ) : (
+                  <p className="font-bold text-lg text-green-600">
+                    {userBalance?.tokenCredits.toLocaleString() || "0"}
+                  </p>
+                )}
+              </div>
+            </div>
+
+            {/* Boutons d'action */}
+            <div className="flex gap-2 pt-2 border-t">
+              <Button
+                onClick={addCredits}
+                disabled={adding || loadingBalance}
+                className="flex-1 bg-green-600 hover:bg-green-700"
+              >
+                {adding ? "Ajout en cours..." : "Ajouter 3M tokens"}
+              </Button>
+              <Button onClick={reset} variant="outline">
+                Annuler
+              </Button>
+            </div>
+          </div>
+        )}
+
+        {/* Message de succès */}
+        {success && (
+          <div className="border rounded-lg p-4 bg-green-50">
+            <h4 className="font-semibold text-green-800 flex items-center gap-2">
+              <CheckCircle className="h-5 w-5" />
+              Crédits ajoutés avec succès !
+            </h4>
+            <p className="text-green-700 mt-2">
+              Nouveau solde:{" "}
+              <span className="font-bold">
+                {success.newBalance.toLocaleString()}
+              </span>{" "}
+              tokens
+            </p>
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  );
+}

components/dashboard/create-user.tsx

@@ -118,7 +118,8 @@ export default function CreateUser() {
       } else {
         setResult({
           success: false,
-          message: data.error || "Erreur lors de la création de l'utilisateur",
+          message:
+            data.error || "Erreur lors de la création de l'utilisateur",
         });
       }
     } catch (error) {
@@ -185,7 +186,9 @@ export default function CreateUser() {
             </div>
 
             <div className="space-y-2">
-              <Label htmlFor="confirmPassword">Confirmer le mot de passe *</Label>
+              <Label htmlFor="confirmPassword">
+                Confirmer le mot de passe *
+              </Label>
               <Input
                 id="confirmPassword"
                 type="password"
@@ -204,7 +207,9 @@ export default function CreateUser() {
             <Label htmlFor="role">Rôle</Label>
             <Select
               value={formData.role}
-              onValueChange={(value: string) => handleInputChange("role", value)}
+              onValueChange={(value: string) =>
+                handleInputChange("role", value)
+              }
               disabled={isLoading}
             >
               <SelectTrigger>
@@ -229,13 +234,10 @@ export default function CreateUser() {
                 {result.success && result.user && (
                   <div className="mt-2 text-sm">
                     <strong>Détails:</strong>
-                    <br />
+                    <br />• ID: {result.user.id}
-                    • ID: {result.user.id}
+                    <br />• Email: {result.user.email}
-                    <br />
+                    <br />• Rôle: {result.user.role}
-                    • Email: {result.user.email}
+                    <br />• Crédits initiaux: 3,000,000 tokens
-                    <br />
-                    • Rôle: {result.user.role}
-                    <br />• Crédits initiaux: 5,000,000 tokens
                   </div>
                 )}
               </AlertDescription>
@@ -262,7 +264,9 @@ export default function CreateUser() {
         <div className="mt-6 p-4 bg-muted rounded-lg">
           <h4 className="font-medium mb-2">Informations importantes :</h4>
           <ul className="text-sm text-muted-foreground space-y-1">
-            <li>• L&apos;utilisateur recevra automatiquement 5,000,000 tokens</li>
+            <li>
+              • L&apos;utilisateur recevra automatiquement 5,000,000 tokens
+            </li>
             <li>• Le mot de passe sera hashé de manière sécurisée</li>
             <li>• L&apos;email doit être unique dans le système</li>
             <li>• L&apos;utilisateur pourra se connecter immédiatement</li>

components/dashboard/dashboard-users-list.tsx

@@ -11,7 +11,6 @@ import {
   LibreChatUser,
   LibreChatConversation,
   LibreChatBalance,
-  LibreChatMessage,
 } from "@/lib/types";
 
 interface DashboardUser {
@@ -22,30 +21,15 @@ interface DashboardUser {
   credits: number;
 }
 
-// Interfaces pour les collections tokens et toolcalls
+// Interface pour les transactions (vraie source de consommation)
-interface TokenDocument {
+interface TransactionDocument {
   _id: string;
-  user?: string;
+  user: unknown; // ObjectId dans MongoDB
-  userId?: string;
+  rawAmount?: number;
-  amount?: number;
+  tokenType?: string;
-  tokens?: number;
+  model?: string;
-  count?: number;
 }
 
-interface ToolcallDocument {
-  _id: string;
-  user?: string;
-  userId?: string;
-  tokens?: number;
-  tokenCount?: number;
-}
-
-const isValidDate = (value: unknown): value is string | number | Date => {
-  if (!value) return false;
-  const date = new Date(value as string | number | Date);
-  return !isNaN(date.getTime());
-};
-
 export function DashboardUsersList() {
   const [topUsers, setTopUsers] = useState<DashboardUser[]>([]);
   const [isLoading, setIsLoading] = useState(true);
@@ -57,20 +41,12 @@ export function DashboardUsersList() {
     useCollection<LibreChatConversation>("conversations", { limit: 1000 });
   const { data: balances, loading: balancesLoading } =
     useCollection<LibreChatBalance>("balances", { limit: 1000 });
-  const { data: messages, loading: messagesLoading } =
+  // Transactions = vraie source de consommation de tokens
-    useCollection<LibreChatMessage>("messages", { limit: 1000 });
+  const { data: transactions, loading: transactionsLoading } =
-  const { data: tokens, loading: tokensLoading } =
+    useCollection<TransactionDocument>("transactions", { limit: 10000 });
-    useCollection<TokenDocument>("tokens", { limit: 1000 });
-  const { data: toolcalls, loading: toolcallsLoading } =
-    useCollection<ToolcallDocument>("toolcalls", { limit: 1000 });
 
   const processUsers = useCallback(() => {
-    if (
+    if (!users?.length || !conversations?.length || !balances?.length) {
-      !users?.length ||
-      !conversations?.length ||
-      !balances?.length ||
-      !messages?.length
-    ) {
       return;
     }
 
@@ -78,153 +54,45 @@ export function DashboardUsersList() {
     console.log("Users:", users.length);
     console.log("Conversations:", conversations.length);
     console.log("Balances:", balances.length);
-    console.log("Messages:", messages.length);
+    console.log("Transactions:", transactions?.length || 0);
-    console.log("Tokens collection:", tokens?.length || 0);
-    console.log("Toolcalls collection:", toolcalls?.length || 0);
 
     const processedUsers: DashboardUser[] = [];
 
+    // Créer une map des transactions par utilisateur (user est un ObjectId, on compare en string)
+    const tokensByUser = new Map<string, number>();
+    if (transactions?.length) {
+      transactions.forEach((tx: TransactionDocument) => {
+        // tx.user est un ObjectId, on le convertit en string pour la comparaison
+        const txUserId = String(tx.user);
+        const tokens = Math.abs(tx.rawAmount || 0);
+        tokensByUser.set(txUserId, (tokensByUser.get(txUserId) || 0) + tokens);
+      });
+    }
+
     users.forEach((user: LibreChatUser) => {
-      // Obtenir les conversations de l'utilisateur
+      const userId = user._id;
+
+      // Obtenir les conversations de l'utilisateur (user dans conversations est un string)
       const userConversations = conversations.filter(
-        (conv: LibreChatConversation) => conv.user === user._id
+        (conv: LibreChatConversation) => String(conv.user) === userId
       );
 
-      // Obtenir les messages de l'utilisateur
+      // Obtenir les tokens depuis les transactions (vraie consommation)
-      const userMessages = messages.filter(
+      const tokensFromTransactions = tokensByUser.get(userId) || 0;
-        (msg: LibreChatMessage) => msg.user === user._id
+
+      // Obtenir le balance de l'utilisateur
+      const userBalance = balances.find(
+        (balance: LibreChatBalance) => String(balance.user) === userId
       );
+      const credits = userBalance?.tokenCredits || 0;
 
-      // Calculer les tokens depuis les messages
+      // Ajouter l'utilisateur s'il a consommé des tokens
-      const totalTokensFromMessages = userMessages.reduce(
+      if (tokensFromTransactions > 0) {
-        (sum: number, msg: LibreChatMessage) => sum + (msg.tokenCount || 0),
-        0
-      );
-
-      // Calculer les tokens depuis les conversations de l'utilisateur
-      const userConversationIds = userConversations.map(
-        (conv) => conv.conversationId
-      );
-      const conversationMessages = messages.filter((msg: LibreChatMessage) =>
-        userConversationIds.includes(msg.conversationId)
-      );
-
-      const totalTokensFromConversations = conversationMessages.reduce(
-        (sum: number, msg: LibreChatMessage) => sum + (msg.tokenCount || 0),
-        0
-      );
-
-      // Vérifier les collections tokens et toolcalls
-      let tokensFromTokensCollection = 0;
-      let tokensFromToolcalls = 0;
-
-      if (tokens?.length) {
-        const userTokens = tokens.filter(
-          (token: TokenDocument) =>
-            token.user === user._id || token.userId === user._id
-        );
-        tokensFromTokensCollection = userTokens.reduce(
-          (sum: number, token: TokenDocument) => {
-            return sum + (token.amount || token.tokens || token.count || 0);
-          },
-          0
-        );
-      }
-
-      if (toolcalls?.length) {
-        const userToolcalls = toolcalls.filter(
-          (toolcall: ToolcallDocument) =>
-            toolcall.user === user._id || toolcall.userId === user._id
-        );
-        tokensFromToolcalls = userToolcalls.reduce(
-          (sum: number, toolcall: ToolcallDocument) => {
-            return sum + (toolcall.tokens || toolcall.tokenCount || 0);
-          },
-          0
-        );
-      }
-
-      // Obtenir les balances de l'utilisateur
-      const userBalances = balances.filter(
-        (balance: LibreChatBalance) => balance.user === user._id
-      );
-
-      // Trier par date de mise à jour (plus récent en premier)
-      const sortedBalances = userBalances.sort((a, b) => {
-        const dateA = a.updatedAt || a.createdAt;
-        const dateB = b.updatedAt || b.createdAt;
-
-        // Vérifier que les dates sont valides avant de les comparer
-        if (isValidDate(dateA) && isValidDate(dateB)) {
-          return (
-            new Date(dateB as string | number | Date).getTime() -
-            new Date(dateA as string | number | Date).getTime()
-          );
-        }
-
-        // Si seulement une date existe et est valide, la privilégier
-        if (isValidDate(dateA) && !isValidDate(dateB)) return -1;
-        if (!isValidDate(dateA) && isValidDate(dateB)) return 1;
-
-        // Si aucune date n'existe ou n'est valide, garder l'ordre actuel
-        return 0;
-      });
-
-      // Prendre la balance la plus récente
-      const latestBalance = sortedBalances[0];
-      const credits = latestBalance ? latestBalance.tokenCredits || 0 : 0;
-
-      // Calculer les tokens réellement consommés depuis les messages (approche principale)
-      const totalTokens = Math.max(
-        totalTokensFromMessages,
-        totalTokensFromConversations,
-        tokensFromTokensCollection,
-        tokensFromToolcalls
-      );
-
-      // Calculer les tokens depuis les crédits seulement si on n'a pas de données de messages
-      const INITIAL_CREDITS = 3000000;
-      const creditsUsed = INITIAL_CREDITS - credits;
-      const tokensFromCredits = creditsUsed > 0 ? creditsUsed : 0;
-
-      // Si on n'a pas de tokens depuis les messages mais qu'on a une consommation de crédits significative
-      const finalTokens = totalTokens > 0 ? totalTokens : 
-        (tokensFromCredits > 0 && tokensFromCredits < INITIAL_CREDITS) ? tokensFromCredits : 0;
-
-      // Log de débogage très détaillé
-      console.log(`👤 User ${user.name || user.email}:`, {
-        conversations: userConversations.length,
-        userMessages: userMessages.length,
-        conversationMessages: conversationMessages.length,
-        tokensFromMessages: totalTokensFromMessages,
-        tokensFromConversations: totalTokensFromConversations,
-        tokensFromTokensCollection: tokensFromTokensCollection,
-        tokensFromToolcalls: tokensFromToolcalls,
-        currentCredits: credits,
-        creditsUsed: creditsUsed,
-        tokensFromCredits: tokensFromCredits,
-        finalTokens: finalTokens,
-        willBeIncluded: finalTokens > 0,
-        messagesSample: userMessages.slice(0, 2).map((m) => ({
-          tokenCount: m.tokenCount,
-          model: m.model,
-          isCreatedByUser: m.isCreatedByUser,
-          conversationId: m.conversationId,
-        })),
-        conversationsSample: userConversations.slice(0, 2).map((c) => ({
-          conversationId: c.conversationId,
-          messagesCount: c.messages?.length || 0,
-        })),
-      });
-
-      // Ajouter l'utilisateur s'il a consommé des tokens (éviter les faux positifs de 3M tokens)
-      if (finalTokens > 0 && finalTokens < INITIAL_CREDITS) {
         processedUsers.push({
-          userId: user._id,
+          userId: userId,
-          userName:
+          userName: user.name || user.username || user.email || "Utilisateur inconnu",
-            user.name || user.username || user.email || "Utilisateur inconnu",
           conversations: userConversations.length,
-          tokens: finalTokens,
+          tokens: tokensFromTransactions,
           credits: credits,
         });
       }
@@ -239,26 +107,18 @@ export function DashboardUsersList() {
       totalUsers: users.length,
       usersWithActivity: processedUsers.length,
       top5Users: sortedUsers.length,
-      allProcessedUsers: processedUsers.map(u => ({
-        name: u.userName,
-        conversations: u.conversations,
-        tokens: u.tokens,
-        credits: u.credits
-      }))
     });
-    console.log("✅ Top 5 users processed:", sortedUsers);
+    console.log("✅ Top 5 users:", sortedUsers);
     setTopUsers(sortedUsers);
     setIsLoading(false);
-  }, [users, conversations, balances, messages, tokens, toolcalls]);
+  }, [users, conversations, balances, transactions]);
 
   useEffect(() => {
     const allDataLoaded =
       !usersLoading &&
       !conversationsLoading &&
       !balancesLoading &&
-      !messagesLoading &&
+      !transactionsLoading;
-      !tokensLoading &&
-      !toolcallsLoading;
 
     if (allDataLoaded) {
       processUsers();
@@ -269,9 +129,7 @@ export function DashboardUsersList() {
     usersLoading,
     conversationsLoading,
     balancesLoading,
-    messagesLoading,
+    transactionsLoading,
-    tokensLoading,
-    toolcallsLoading,
     processUsers,
   ]);
 

components/dashboard/usage-analytics.tsx

@@ -37,7 +37,7 @@ export function UsageAnalytics() {
 
   const { data: users = [] } = useCollection<LibreChatUser>("users", { limit: 1000 });
   const { data: conversations = [] } = useCollection<LibreChatConversation>("conversations", { limit: 1000 });
-  const { data: transactions = [] } = useCollection<LibreChatTransaction>("transactions", { limit: 1000 });
+  const { data: transactions = [] } = useCollection<LibreChatTransaction>("transactions", { limit: 10000 });
   const { data: balances = [] } = useCollection<LibreChatBalance>("balances", { limit: 1000 });
 
   const calculateStats = useCallback(() => {
@@ -56,7 +56,7 @@ export function UsageAnalytics() {
     // Analyser les doublons dans les balances
     const userCounts = new Map<string, number>();
     balances.forEach((balance) => {
-      const userId = balance.user;
+      const userId = String(balance.user);
       userCounts.set(userId, (userCounts.get(userId) || 0) + 1);
     });
 
@@ -77,7 +77,7 @@ export function UsageAnalytics() {
     const duplicateDetails = Array.from(userCounts.entries())
       .filter(([, count]) => count > 1)
       .map(([userId, count]) => {
-        const userBalances = balances.filter(b => b.user === userId);
+        const userBalances = balances.filter(b => String(b.user) === userId);
         const totalCredits = userBalances.reduce((sum, b) => sum + (b.tokenCredits || 0), 0);
         return {
           userId,
@@ -96,7 +96,7 @@ export function UsageAnalytics() {
     // NOUVEAU : Identifier les utilisateurs fantômes
     console.log("=== ANALYSE DES UTILISATEURS FANTÔMES ===");
     const userIds = new Set(users.map(user => user._id));
-    const balanceUserIds = balances.map(balance => balance.user);
+    const balanceUserIds = balances.map(balance => String(balance.user));
     const phantomUsers = balanceUserIds.filter(userId => !userIds.has(userId));
     const uniquePhantomUsers = [...new Set(phantomUsers)];
     
@@ -105,7 +105,7 @@ export function UsageAnalytics() {
     
     // Calculer les crédits des utilisateurs fantômes
     const phantomCredits = balances
-      .filter(balance => uniquePhantomUsers.includes(balance.user))
+      .filter(balance => uniquePhantomUsers.includes(String(balance.user)))
       .reduce((sum, balance) => sum + (balance.tokenCredits || 0), 0);
     
     console.log("Crédits des utilisateurs fantômes:", phantomCredits);
@@ -113,7 +113,7 @@ export function UsageAnalytics() {
     
     // Analyser les utilisateurs fantômes
     const phantomDetails = uniquePhantomUsers.map(userId => {
-      const userBalances = balances.filter(b => b.user === userId);
+      const userBalances = balances.filter(b => String(b.user) === userId);
       const totalCredits = userBalances.reduce((sum, b) => sum + (b.tokenCredits || 0), 0);
       return { userId, totalCredits, count: userBalances.length };
     });
@@ -134,13 +134,13 @@ export function UsageAnalytics() {
     // Grouper les balances par utilisateur
     const balancesByUser = new Map<string, LibreChatBalance[]>();
     balances.forEach((balance) => {
-      const userId = balance.user;
+      const balanceUserId = String(balance.user);
       // Ignorer les utilisateurs fantômes (qui n'existent plus)
-      if (users.some(user => user._id === userId)) {
+      if (users.some(user => user._id === balanceUserId)) {
-        if (!balancesByUser.has(userId)) {
+        if (!balancesByUser.has(balanceUserId)) {
-          balancesByUser.set(userId, []);
+          balancesByUser.set(balanceUserId, []);
         }
-        balancesByUser.get(userId)!.push(balance);
+        balancesByUser.get(balanceUserId)!.push(balance);
       }
     });
 
@@ -186,17 +186,19 @@ export function UsageAnalytics() {
     });
 
     // Calculer les conversations par utilisateur
+    // conv.user est un STRING
     conversations.forEach((conv) => {
-      const userStat = userStats.get(conv.user);
+      const userStat = userStats.get(String(conv.user));
       if (userStat) {
         userStat.conversations++;
       }
     });
 
     // Calculer les tokens par utilisateur depuis les transactions
+    // transaction.user est un ObjectId, on le convertit en string
     let totalTokensConsumed = 0;
     transactions.forEach((transaction) => {
-      const userStat = userStats.get(transaction.user);
+      const userStat = userStats.get(String(transaction.user));
       if (userStat && transaction.rawAmount) {
         const tokens = Math.abs(Number(transaction.rawAmount) || 0);
         userStat.tokens += tokens;

components/layout/sidebar.tsx

@@ -22,6 +22,7 @@ import {
   LogOut,
   User,
   Mail,
+  GraduationCap,
 } from "lucide-react";
 import type { User as SupabaseUser } from "@supabase/supabase-js";
 
@@ -37,16 +38,16 @@ const navigationGroups = [
   {
     name: "Données",
     items: [
-      {
-        name: "Utilisateurs",
-        href: "/users",
-        icon: Users,
-      },
       {
         name: "Conversations",
         href: "/conversations",
         icon: MessageSquare,
       },
+      {
+        name: "Utilisateurs",
+        href: "/users",
+        icon: Users,
+      },
       {
         name: "Messages",
         href: "/messages",
@@ -57,6 +58,11 @@ const navigationGroups = [
         href: "/transactions",
         icon: CreditCard,
       },
+      {
+        name: "Groupes",
+        href: "/referents",
+        icon: GraduationCap,
+      },
     ],
   },
   {

components/providers/query-provider.tsx

@@ -0,0 +1,24 @@
+"use client";
+
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { useState } from "react";
+
+export function QueryProvider({ children }: { children: React.ReactNode }) {
+  const [queryClient] = useState(
+    () =>
+      new QueryClient({
+        defaultOptions: {
+          queries: {
+            staleTime: 1000 * 60, // 1 minute
+            gcTime: 1000 * 60 * 5, // 5 minutes (anciennement cacheTime)
+            refetchOnWindowFocus: false,
+            retry: 1,
+          },
+        },
+      })
+  );
+
+  return (
+    <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
+  );
+}

debug-analytics.js

@@ -0,0 +1,27 @@
+const { MongoClient } = require('mongodb');
+
+async function debug() {
+  const uri = 'mongodb://7qV5rRanD6UwANNO:NK1EFfaKpJZcTQlmm7pDUUI7Yk7yqxN6@51.254.197.189:27017/librechat?authSource=admin';
+  const client = new MongoClient(uri);
+  await client.connect();
+  const db = client.db('librechat');
+
+  // Vérifier les types
+  const user = await db.collection('users').findOne({});
+  const tx = await db.collection('transactions').findOne({});
+  const conv = await db.collection('conversations').findOne({});
+
+  console.log('=== TYPES DES IDs ===');
+  console.log('user._id:', typeof user._id, '->', user._id);
+  console.log('transaction.user:', typeof tx.user, '->', tx.user);
+  console.log('conversation.user:', typeof conv.user, '->', conv.user);
+
+  console.log('\n=== COMPARAISONS ===');
+  console.log('user._id === tx.user:', user._id === tx.user);
+  console.log('String(user._id) === String(tx.user):', String(user._id) === String(tx.user));
+  console.log('user._id.toString() === conv.user:', user._id.toString() === conv.user);
+
+  await client.close();
+}
+
+debug().catch(console.error);

debug-tokens.js

@@ -0,0 +1,38 @@
+const { MongoClient } = require('mongodb');
+
+async function debug() {
+  const uri = 'mongodb://7qV5rRanD6UwANNO:NK1EFfaKpJZcTQlmm7pDUUI7Yk7yqxN6@51.254.197.189:27017/librechat?authSource=admin';
+  const client = new MongoClient(uri);
+  await client.connect();
+  const db = client.db('librechat');
+
+  const usersToCheck = ['Kleyntssens', 'Lilou Guillaume', 'Isabelle De Witte', 'Flavie Pochet'];
+
+  console.log('=== VERIFICATION TOKENS DEPUIS TRANSACTIONS ===\n');
+
+  for (const searchName of usersToCheck) {
+    const user = await db.collection('users').findOne({ name: { $regex: searchName, $options: 'i' } });
+
+    if (!user) {
+      console.log('NOT FOUND:', searchName);
+      continue;
+    }
+
+    const convCount = await db.collection('conversations').countDocuments({ user: user._id.toString() });
+    const txs = await db.collection('transactions').find({ user: user._id }).toArray();
+    const tokensFromTx = txs.reduce((sum, t) => sum + Math.abs(t.rawAmount || 0), 0);
+    const balance = await db.collection('balances').findOne({ user: user._id });
+    const credits = balance?.tokenCredits || 0;
+
+    console.log('---');
+    console.log('User:', user.name);
+    console.log('Conversations:', convCount);
+    console.log('Tokens (VRAI depuis transactions):', tokensFromTx.toLocaleString());
+    console.log('Credits:', credits.toLocaleString());
+    console.log('Nb transactions:', txs.length);
+  }
+
+  await client.close();
+}
+
+debug().catch(console.error);

hooks/useCollection.ts

@@ -7,6 +7,7 @@ interface UseCollectionOptions {
   limit?: number;
   filter?: Record<string, unknown>;
   search?: string;
+  referent?: string;
 }
 
 interface CollectionResponse<T> {
@@ -27,7 +28,7 @@ export function useCollection<T = Record<string, unknown>>(
   const [total, setTotal] = useState(0);
   const [totalPages, setTotalPages] = useState(0);
 
-  const { page = 1, limit = 20, filter = {}, search } = options;
+  const { page = 1, limit = 20, filter = {}, search, referent } = options;
 
   // Mémoriser la chaîne JSON du filtre pour éviter les re-renders inutiles
   const filterString = useMemo(() => JSON.stringify(filter), [filter]);
@@ -43,6 +44,9 @@ export function useCollection<T = Record<string, unknown>>(
       if (search) {
         params.append("search", search);
       }
+      if (referent) {
+        params.append("referent", referent);
+      }
 
       const response = await fetch(
         `/api/collections/${collectionName}?${params}`
@@ -59,7 +63,7 @@ export function useCollection<T = Record<string, unknown>>(
     } finally {
       setLoading(false);
     }
-  }, [collectionName, page, limit, filterString, search]);
+  }, [collectionName, page, limit, filterString, search, referent]);
 
   useEffect(() => {
     fetchData();

lib/types/index.ts

@@ -21,6 +21,11 @@ export interface LibreChatUser extends Record<string, unknown> {
   createdAt: Date;
   updatedAt: Date;
   __v: number;
+  // Champs additionnels pour les étudiants
+  prenom?: string;
+  nom?: string;
+  referent?: string;
+  cours?: string;
 }
 
 export interface LibreChatConversation extends Record<string, unknown> {

package-lock.json

@@ -20,18 +20,21 @@
         "@radix-ui/react-tooltip": "^1.2.8",
         "@supabase/ssr": "^0.7.0",
         "@supabase/supabase-js": "^2.58.0",
+        "@tanstack/react-query": "^5.90.11",
         "@types/bcryptjs": "^2.4.6",
         "@types/mongodb": "^4.0.6",
         "bcryptjs": "^3.0.2",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
+        "dotenv": "^17.2.3",
         "lucide-react": "^0.544.0",
         "mongodb": "^6.20.0",
         "next": "15.5.4",
         "react": "19.1.0",
         "react-dom": "19.1.0",
         "recharts": "^3.2.1",
-        "tailwind-merge": "^3.3.1"
+        "tailwind-merge": "^3.3.1",
+        "xlsx": "^0.18.5"
       },
       "devDependencies": {
         "@eslint/eslintrc": "^3",
@@ -2295,6 +2298,32 @@
         "tailwindcss": "4.1.14"
       }
     },
+    "node_modules/@tanstack/query-core": {
+      "version": "5.90.11",
+      "resolved": "https://registry.npmjs.org/@tanstack/query-core/-/query-core-5.90.11.tgz",
+      "integrity": "sha512-f9z/nXhCgWDF4lHqgIE30jxLe4sYv15QodfdPDKYAk7nAEjNcndy4dHz3ezhdUaR23BpWa4I2EH4/DZ0//Uf8A==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/tannerlinsley"
+      }
+    },
+    "node_modules/@tanstack/react-query": {
+      "version": "5.90.11",
+      "resolved": "https://registry.npmjs.org/@tanstack/react-query/-/react-query-5.90.11.tgz",
+      "integrity": "sha512-3uyzz01D1fkTLXuxF3JfoJoHQMU2fxsfJwE+6N5hHy0dVNoZOvwKP8Z2k7k1KDeD54N20apcJnG75TBAStIrBA==",
+      "license": "MIT",
+      "dependencies": {
+        "@tanstack/query-core": "5.90.11"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/tannerlinsley"
+      },
+      "peerDependencies": {
+        "react": "^18 || ^19"
+      }
+    },
     "node_modules/@tybys/wasm-util": {
       "version": "0.10.1",
       "resolved": "https://registry.npmjs.org/@tybys/wasm-util/-/wasm-util-0.10.1.tgz",
@@ -3054,6 +3083,15 @@
         "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
     },
+    "node_modules/adler-32": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/adler-32/-/adler-32-1.3.1.tgz",
+      "integrity": "sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/ajv": {
       "version": "6.12.6",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
@@ -3458,6 +3496,19 @@
       ],
       "license": "CC-BY-4.0"
     },
+    "node_modules/cfb": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/cfb/-/cfb-1.2.2.tgz",
+      "integrity": "sha512-KfdUZsSOw19/ObEWasvBP/Ac4reZvAGauZhs6S/gqNhXhI7cKwvlH7ulj+dOEYnca4bm4SGo8C1bTAQvnTjgQA==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "adler-32": "~1.3.0",
+        "crc-32": "~1.2.0"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/chalk": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
@@ -3512,6 +3563,15 @@
         "node": ">=6"
       }
     },
+    "node_modules/codepage": {
+      "version": "1.15.0",
+      "resolved": "https://registry.npmjs.org/codepage/-/codepage-1.15.0.tgz",
+      "integrity": "sha512-3g6NUTPd/YtuuGrhMnOMRjFc+LJw/bnMp3+0r/Wcz3IXUuCosKRJvMphm5+Q+bvTVGcJJuRvVLuYba+WojaFaA==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -3548,6 +3608,18 @@
         "node": ">=18"
       }
     },
+    "node_modules/crc-32": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.2.tgz",
+      "integrity": "sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==",
+      "license": "Apache-2.0",
+      "bin": {
+        "crc32": "bin/crc32.njs"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -3848,6 +3920,18 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/dotenv": {
+      "version": "17.2.3",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.2.3.tgz",
+      "integrity": "sha512-JVUnt+DUIzu87TABbhPmNfVdBDt18BLOWjMUFJMSi/Qqg7NTYtabbvSNJGOJ7afbRuv9D/lngizHtP7QyLQ+9w==",
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://dotenvx.com"
+      }
+    },
     "node_modules/dunder-proto": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/dunder-proto/-/dunder-proto-1.0.1.tgz",
@@ -4659,6 +4743,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/frac": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/frac/-/frac-1.1.2.tgz",
+      "integrity": "sha512-w/XBfkibaTl3YDqASwfDUqkna4Z2p9cFSr1aHDt0WoMTECnRfBOv2WArlZILlqgWlmdIlALXGpM2AOhEk5W3IA==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/function-bind": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
@@ -7062,6 +7155,18 @@
         "memory-pager": "^1.0.2"
       }
     },
+    "node_modules/ssf": {
+      "version": "0.11.2",
+      "resolved": "https://registry.npmjs.org/ssf/-/ssf-0.11.2.tgz",
+      "integrity": "sha512-+idbmIXoYET47hH+d7dfm2epdOMUDjqcB4648sTZ+t2JwoyBFL/insLfB/racrDmsKB3diwsDA696pZMieAC5g==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "frac": "~1.1.2"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/stable-hash": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/stable-hash/-/stable-hash-0.0.5.tgz",
@@ -7815,6 +7920,24 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/wmf": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wmf/-/wmf-1.0.2.tgz",
+      "integrity": "sha512-/p9K7bEh0Dj6WbXg4JG0xvLQmIadrner1bi45VMJTfnbVHsc7yIajZyoSoK60/dtVBs12Fm6WkUI5/3WAVsNMw==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
+    "node_modules/word": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/word/-/word-0.3.0.tgz",
+      "integrity": "sha512-OELeY0Q61OXpdUfTp+oweA/vtLVg5VDOXh+3he3PNzLGG/y0oylSOC1xRVj0+l4vQ3tj/bB1HVHv1ocXkQceFA==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
@@ -7846,6 +7969,27 @@
         }
       }
     },
+    "node_modules/xlsx": {
+      "version": "0.18.5",
+      "resolved": "https://registry.npmjs.org/xlsx/-/xlsx-0.18.5.tgz",
+      "integrity": "sha512-dmg3LCjBPHZnQp5/F/+nnTa+miPJxUXB6vtk42YjBBKayDNagxGEeIdWApkYPOf3Z3pm3k62Knjzp7lMeTEtFQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "adler-32": "~1.3.0",
+        "cfb": "~1.2.1",
+        "codepage": "~1.15.0",
+        "crc-32": "~1.2.1",
+        "ssf": "~0.11.2",
+        "wmf": "~1.0.1",
+        "word": "~0.3.0"
+      },
+      "bin": {
+        "xlsx": "bin/xlsx.njs"
+      },
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/yallist": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz",

package.json

@@ -21,18 +21,21 @@
     "@radix-ui/react-tooltip": "^1.2.8",
     "@supabase/ssr": "^0.7.0",
     "@supabase/supabase-js": "^2.58.0",
+    "@tanstack/react-query": "^5.90.11",
     "@types/bcryptjs": "^2.4.6",
     "@types/mongodb": "^4.0.6",
     "bcryptjs": "^3.0.2",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "dotenv": "^17.2.3",
     "lucide-react": "^0.544.0",
     "mongodb": "^6.20.0",
     "next": "15.5.4",
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "recharts": "^3.2.1",
-    "tailwind-merge": "^3.3.1"
+    "tailwind-merge": "^3.3.1",
+    "xlsx": "^0.18.5"
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3",

scripts/README.md

@@ -0,0 +1,114 @@
+# 📥 Import Automatique d'Utilisateurs depuis Excel
+
+Ce script permet d'importer automatiquement des utilisateurs dans MongoDB depuis un fichier Excel.
+
+## 🚀 Utilisation
+
+### 1. Préparer le fichier Excel
+
+Placer votre fichier `.xlsx` dans le dossier `public/list_users/`
+
+**Format attendu :**
+```
+Nom Etudiant | Prénom Etudiant | Matricule HE | EMail Etudiant 2
+```
+
+**Exemple :**
+```
+Albarran Perez | Tamara | 1240935 | tamara.albarran@student.ihecs.be
+Amjahed | Kawtar | 1241004 | kawtar.amjahed@student.ihecs.be
+```
+
+**Nom du fichier :** Le nom doit être le nom du référent avec underscores.
+- ✅ `Emmanuel_WATHELE.xlsx`
+- ✅ `Sophie_MARTIN.xlsx`
+- ❌ `liste.xlsx`
+
+### 2. Configurer le script
+
+Ouvrir `scripts/import-users.js` et modifier ces lignes :
+
+```javascript
+const XLSX_FILENAME = "Emmanuel_WATHELE.xlsx"; // ⚠️ Nom du fichier
+const DEFAULT_PASSWORD = "IHECS-2025";         // Mot de passe par défaut
+const COURS = "Ouverture à l'esprit critique"; // Nom du cours
+```
+
+### 3. Lancer l'import
+
+```bash
+node scripts/import-users.js
+```
+
+## 📊 Ce que fait le script
+
+1. ✅ Lit le fichier Excel
+2. ✅ Extrait le référent depuis le nom du fichier (`Emmanuel_WATHELE` → `Emmanuel WATHELE`)
+3. ✅ Hash le mot de passe une seule fois (optimisation)
+4. ✅ Pour chaque étudiant :
+   - Vérifie que l'email est valide
+   - Vérifie que l'email n'existe pas déjà
+   - Crée l'utilisateur avec :
+     - `nom`, `prenom`, `email`
+     - `referent` (extrait du nom du fichier)
+     - `cours` (défini dans le script)
+     - `password` hashé
+     - `role: "USER"`
+   - Crée une balance initiale (3 000 000 tokens)
+5. ✅ Affiche un résumé détaillé
+
+## 📝 Exemple de résultat
+
+```
+🚀 Démarrage de l'import...
+
+📋 Référent: Emmanuel WATHELE
+📚 Cours: Ouverture à l'esprit critique
+🔑 Password par défaut: IHECS-2025
+
+📁 Lecture du fichier: C:\...\public\list_users\Emmanuel_WATHELE.xlsx
+✅ 50 lignes détectées dans le fichier
+
+🔐 Hash du mot de passe...
+🔌 Connexion à MongoDB...
+✅ Connecté à MongoDB
+
+📥 Import en cours...
+
+[1/50] ✅ Créé: Tamara Albarran Perez (tamara.albarran@student.ihecs.be)
+[2/50] ✅ Créé: Kawtar Amjahed (kawtar.amjahed@student.ihecs.be)
+[3/50] ⏭️  Ignoré (existe déjà): nezaket.arslan@student.ihecs.be
+...
+
+============================================================
+📊 RÉSUMÉ DE L'IMPORT
+============================================================
+✅ Utilisateurs créés: 48
+⏭️  Utilisateurs ignorés (déjà existants): 2
+❌ Erreurs: 0
+============================================================
+
+✨ Import terminé !
+```
+
+## ⚠️ Important
+
+- Le script **ignore** les utilisateurs déjà existants (même email)
+- Le script **ignore** la colonne "Matricule HE" (non sauvegardée)
+- Tous les utilisateurs auront le **même mot de passe** (ils pourront le changer après)
+- Chaque utilisateur reçoit **3 000 000 tokens** par défaut
+
+## 🔧 Dépannage
+
+**Erreur : "Cannot find module 'xlsx'"**
+```bash
+npm install xlsx
+```
+
+**Erreur : "connect ECONNREFUSED"**
+- Vérifier que MongoDB est démarré
+- Vérifier la connexion dans `.env.local`
+
+**Erreur : "File not found"**
+- Vérifier que le fichier est bien dans `public/list_users/`
+- Vérifier le nom du fichier dans le script

scripts/import-ihecs.js

@@ -0,0 +1,167 @@
+import XLSX from 'xlsx';
+import { MongoClient, ObjectId } from 'mongodb';
+import bcrypt from 'bcryptjs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import dotenv from 'dotenv';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+// Charger les variables d'environnement depuis .env.local
+dotenv.config({ path: path.join(__dirname, '..', '.env.local') });
+
+// Configuration
+const MONGODB_URI = process.env.MONGODB_URI;
+const XLSX_FILENAME = "IHECS.xlsx"; // ⚠️ Fichier pour IHECS / M2RP
+const DEFAULT_PASSWORD = "IHECS-2025";
+const REFERENT = "IHECS";
+const COURS = "M2RP";
+
+async function importUsers() {
+  console.log("🚀 Démarrage de l'import IHECS / M2RP...\n");
+
+  try {
+    // Vérifier que MONGODB_URI est défini
+    if (!MONGODB_URI) {
+      throw new Error("MONGODB_URI non défini dans .env.local");
+    }
+
+    console.log(`📋 Référent: ${REFERENT}`);
+    console.log(`📚 Cours: ${COURS}`);
+    console.log(`🔑 Password par défaut: ${DEFAULT_PASSWORD}\n`);
+
+    // Lire le fichier Excel
+    const filePath = path.join(__dirname, '..', 'public', 'list_users', XLSX_FILENAME);
+    console.log(`📁 Lecture du fichier: ${filePath}`);
+
+    const workbook = XLSX.readFile(filePath);
+    const sheet = workbook.Sheets[workbook.SheetNames[0]];
+    const data = XLSX.utils.sheet_to_json(sheet);
+
+    console.log(`✅ ${data.length} lignes détectées dans le fichier\n`);
+
+    // Hash le password une seule fois (optimisation)
+    console.log("🔐 Hash du mot de passe...");
+    const hashedPassword = await bcrypt.hash(DEFAULT_PASSWORD, 12);
+
+    // Préparer les users
+    const users = data.map(row => ({
+      nom: row["Nom de famille"],
+      prenom: row["Prénom"],
+      name: `${row["Prénom"]} ${row["Nom de famille"]}`,
+      email: row["Adresse de courriel"],
+      username: row["Nom d'utilisateur"] || row["Adresse de courriel"]?.split("@")[0],
+      password: hashedPassword,
+      emailVerified: false,
+      avatar: null,
+      provider: "local",
+      role: "USER",
+
+      // Nouveaux champs pour le cours et le référent
+      referent: REFERENT,
+      cours: COURS,
+
+      plugins: [],
+      twoFactorEnabled: false,
+      termsAccepted: true,
+      personalization: {
+        memories: false,
+        _id: new ObjectId(),
+      },
+      backupCodes: [],
+      refreshToken: [],
+      createdAt: new Date(),
+      updatedAt: new Date(),
+      __v: 0,
+    }));
+
+    // Connexion à MongoDB
+    console.log("🔌 Connexion à MongoDB...");
+    const client = new MongoClient(MONGODB_URI);
+    await client.connect();
+    const db = client.db('librechat');
+    console.log("✅ Connecté à MongoDB\n");
+
+    // Import des users
+    const results = { created: [], errors: [], skipped: [] };
+
+    console.log("📥 Import en cours...\n");
+
+    for (let i = 0; i < users.length; i++) {
+      const user = users[i];
+      const progress = `[${i + 1}/${users.length}]`;
+
+      try {
+        // Validation email
+        if (!user.email || !user.email.includes('@')) {
+          console.log(`${progress} ⚠️  Email invalide: ${user.name}`);
+          results.errors.push({ name: user.name, error: "Email invalide" });
+          continue;
+        }
+
+        // Vérifier si email existe déjà
+        const existing = await db.collection("users").findOne({ email: user.email });
+
+        if (existing) {
+          console.log(`${progress} ⏭️  Ignoré (existe déjà): ${user.email}`);
+          results.skipped.push(user.email);
+          continue;
+        }
+
+        // Insérer le user
+        const result = await db.collection("users").insertOne(user);
+
+        // Créer la balance initiale
+        await db.collection("balances").insertOne({
+          user: result.insertedId,
+          tokenCredits: 3000000,
+          autoRefillEnabled: false,
+          lastRefill: new Date(),
+          refillAmount: 0,
+          refillIntervalUnit: "month",
+          refillIntervalValue: 1,
+          __v: 0,
+        });
+
+        console.log(`${progress} ✅ Créé: ${user.prenom} ${user.nom} (${user.email})`);
+        results.created.push(user.email);
+
+      } catch (error) {
+        console.error(`${progress} ❌ Erreur: ${user.email} - ${error.message}`);
+        results.errors.push({ email: user.email, error: error.message });
+      }
+    }
+
+    // Fermer la connexion
+    await client.close();
+
+    // Résumé final
+    console.log("\n" + "=".repeat(60));
+    console.log("📊 RÉSUMÉ DE L'IMPORT - IHECS / M2RP");
+    console.log("=".repeat(60));
+    console.log(`✅ Utilisateurs créés: ${results.created.length}`);
+    console.log(`⏭️  Utilisateurs ignorés (déjà existants): ${results.skipped.length}`);
+    console.log(`❌ Erreurs: ${results.errors.length}`);
+    console.log("=".repeat(60));
+
+    if (results.errors.length > 0) {
+      console.log("\n⚠️  DÉTAIL DES ERREURS:");
+      results.errors.forEach(e => {
+        console.log(`  - ${e.email || e.name}: ${e.error}`);
+      });
+    }
+
+    console.log("\n✨ Import terminé !\n");
+
+  } catch (error) {
+    console.error("\n❌ ERREUR FATALE:", error.message);
+    console.error(error);
+    process.exit(1);
+  }
+
+  process.exit(0);
+}
+
+// Lancer l'import
+importUsers();

scripts/import-users.js

@@ -0,0 +1,168 @@
+import XLSX from 'xlsx';
+import { MongoClient, ObjectId } from 'mongodb';
+import bcrypt from 'bcryptjs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import dotenv from 'dotenv';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+// Charger les variables d'environnement depuis .env.local
+dotenv.config({ path: path.join(__dirname, '..', '.env.local') });
+
+// Configuration
+const MONGODB_URI = process.env.MONGODB_URI;
+const XLSX_FILENAME = "Emmanuel_WATHELE.xlsx"; // ⚠️ À modifier selon le fichier
+const DEFAULT_PASSWORD = "IHECS-2025";
+const COURS = "Ouverture à l'esprit critique";
+
+async function importUsers() {
+  console.log("🚀 Démarrage de l'import...\n");
+
+  try {
+    // Vérifier que MONGODB_URI est défini
+    if (!MONGODB_URI) {
+      throw new Error("MONGODB_URI non défini dans .env.local");
+    }
+
+    // 1. Extraire le référent depuis le nom du fichier
+    const referent = XLSX_FILENAME.replace('.xlsx', '').replace(/_/g, ' ');
+    console.log(`📋 Référent: ${referent}`);
+    console.log(`📚 Cours: ${COURS}`);
+    console.log(`🔑 Password par défaut: ${DEFAULT_PASSWORD}\n`);
+
+    // 2. Lire le fichier Excel
+    const filePath = path.join(__dirname, '..', 'public', 'list_users', XLSX_FILENAME);
+    console.log(`📁 Lecture du fichier: ${filePath}`);
+
+    const workbook = XLSX.readFile(filePath);
+    const sheet = workbook.Sheets[workbook.SheetNames[0]];
+    const data = XLSX.utils.sheet_to_json(sheet);
+
+    console.log(`✅ ${data.length} lignes détectées dans le fichier\n`);
+
+    // 3. Hash le password une seule fois (optimisation)
+    console.log("🔐 Hash du mot de passe...");
+    const hashedPassword = await bcrypt.hash(DEFAULT_PASSWORD, 12);
+
+    // 4. Préparer les users
+    const users = data.map(row => ({
+      nom: row["Nom Etudiant"],
+      prenom: row["Prénom Etudiant"],
+      name: `${row["Prénom Etudiant"]} ${row["Nom Etudiant"]}`,
+      email: row["EMail Etudiant 2"],
+      username: row["EMail Etudiant 2"]?.split("@")[0],
+      password: hashedPassword,
+      emailVerified: false,
+      avatar: null,
+      provider: "local",
+      role: "USER",
+
+      // Nouveaux champs pour le cours et le référent
+      referent: referent,
+      cours: COURS,
+
+      plugins: [],
+      twoFactorEnabled: false,
+      termsAccepted: true,
+      personalization: {
+        memories: false,
+        _id: new ObjectId(),
+      },
+      backupCodes: [],
+      refreshToken: [],
+      createdAt: new Date(),
+      updatedAt: new Date(),
+      __v: 0,
+    }));
+
+    // 5. Connexion à MongoDB
+    console.log("🔌 Connexion à MongoDB...");
+    const client = new MongoClient(MONGODB_URI);
+    await client.connect();
+    const db = client.db('librechat');
+    console.log("✅ Connecté à MongoDB\n");
+
+    // 6. Import des users
+    const results = { created: [], errors: [], skipped: [] };
+
+    console.log("📥 Import en cours...\n");
+
+    for (let i = 0; i < users.length; i++) {
+      const user = users[i];
+      const progress = `[${i + 1}/${users.length}]`;
+
+      try {
+        // Validation email
+        if (!user.email || !user.email.includes('@')) {
+          console.log(`${progress} ⚠️  Email invalide: ${user.name}`);
+          results.errors.push({ name: user.name, error: "Email invalide" });
+          continue;
+        }
+
+        // Vérifier si email existe déjà
+        const existing = await db.collection("users").findOne({ email: user.email });
+
+        if (existing) {
+          console.log(`${progress} ⏭️  Ignoré (existe déjà): ${user.email}`);
+          results.skipped.push(user.email);
+          continue;
+        }
+
+        // Insérer le user
+        const result = await db.collection("users").insertOne(user);
+
+        // Créer la balance initiale
+        await db.collection("balances").insertOne({
+          user: result.insertedId,
+          tokenCredits: 3000000,
+          autoRefillEnabled: false,
+          lastRefill: new Date(),
+          refillAmount: 0,
+          refillIntervalUnit: "month",
+          refillIntervalValue: 1,
+          __v: 0,
+        });
+
+        console.log(`${progress} ✅ Créé: ${user.prenom} ${user.nom} (${user.email})`);
+        results.created.push(user.email);
+
+      } catch (error) {
+        console.error(`${progress} ❌ Erreur: ${user.email} - ${error.message}`);
+        results.errors.push({ email: user.email, error: error.message });
+      }
+    }
+
+    // 7. Fermer la connexion
+    await client.close();
+
+    // 8. Résumé final
+    console.log("\n" + "=".repeat(60));
+    console.log("📊 RÉSUMÉ DE L'IMPORT");
+    console.log("=".repeat(60));
+    console.log(`✅ Utilisateurs créés: ${results.created.length}`);
+    console.log(`⏭️  Utilisateurs ignorés (déjà existants): ${results.skipped.length}`);
+    console.log(`❌ Erreurs: ${results.errors.length}`);
+    console.log("=".repeat(60));
+
+    if (results.errors.length > 0) {
+      console.log("\n⚠️  DÉTAIL DES ERREURS:");
+      results.errors.forEach(e => {
+        console.log(`  - ${e.email || e.name}: ${e.error}`);
+      });
+    }
+
+    console.log("\n✨ Import terminé !\n");
+
+  } catch (error) {
+    console.error("\n❌ ERREUR FATALE:", error.message);
+    console.error(error);
+    process.exit(1);
+  }
+
+  process.exit(0);
+}
+
+// Lancer l'import
+importUsers();