feat(auth): restore authenticated user profile

eme-frontend/lib/demo_identity.dart

@@ -1,10 +1,18 @@
-/// Identité simulée utilisée tant que l'authentification Azure AD n'est pas branchée.
+import "services/auth_service.dart";
+
+/// Identité de secours utilisée lorsque aucun profil de session n'est chargé.
 class DemoIdentity {
   DemoIdentity._();
 
-  static const userName = "Lucas Martin";
+  static String get userName =>
-  static const userInitials = "LM";
+      AuthService.currentProfile?.fullName ?? "Lucas Martin";
-  static const userSubtitle = "Étudiant · B2 Informatique · Ensitech Cergy";
+  static String get userInitials =>
-  static const campusTag = "Saint-Christophe · Cergy";
+      AuthService.currentProfile?.initials ?? "LM";
+  static String get userSubtitle =>
+      AuthService.currentProfile?.subtitle ??
+      "Étudiant · B2 Informatique · Ensitech Cergy";
+  static String get campusTag =>
+      AuthService.currentProfile?.campusTag ?? "Saint-Christophe · Cergy";
+
   static const loginCampusTag = "Ensitech · Cergy";
 }

eme-frontend/lib/models/authenticated_profile.dart

@@ -0,0 +1,90 @@
+class AuthenticatedProfile {
+  const AuthenticatedProfile({
+    required this.id,
+    required this.nom,
+    required this.prenom,
+    required this.email,
+    required this.classe,
+    required this.roleCode,
+    required this.roleLabel,
+    required this.campusId,
+    required this.campusNom,
+    required this.campusVille,
+  });
+
+  final int id;
+  final String nom;
+  final String prenom;
+  final String email;
+  final String? classe;
+  final String roleCode;
+  final String roleLabel;
+  final int campusId;
+  final String campusNom;
+  final String campusVille;
+
+  factory AuthenticatedProfile.fromApi(dynamic reponse) {
+    if (reponse is! Map || reponse["data"] is! Map) {
+      throw const FormatException("Profil utilisateur invalide.");
+    }
+
+    final data = reponse["data"] as Map;
+    final role = data["role"];
+    final campus = data["campus"];
+    if (role is! Map || campus is! Map) {
+      throw const FormatException("Role ou campus utilisateur invalide.");
+    }
+
+    final id = data["id"];
+    final campusId = campus["id"];
+    if (id is! int || campusId is! int) {
+      throw const FormatException("Identifiant utilisateur invalide.");
+    }
+
+    final classe = data["classe"];
+    if (classe != null && classe is! String) {
+      throw const FormatException("Classe utilisateur invalide.");
+    }
+
+    return AuthenticatedProfile(
+      id: id,
+      nom: _requiredString(data, "nom"),
+      prenom: _requiredString(data, "prenom"),
+      email: _requiredString(data, "email"),
+      classe: classe as String?,
+      roleCode: _requiredString(role, "code"),
+      roleLabel: _requiredString(role, "libelle"),
+      campusId: campusId,
+      campusNom: _requiredString(campus, "nom"),
+      campusVille: _requiredString(campus, "ville"),
+    );
+  }
+
+  String get fullName => "$prenom $nom";
+
+  String get initials {
+    final first = prenom.trim().isEmpty ? "" : prenom.trim()[0];
+    final last = nom.trim().isEmpty ? "" : nom.trim()[0];
+    return "$first$last".toUpperCase();
+  }
+
+  String get campusTag => "$campusNom · $campusVille";
+
+  String get subtitle {
+    final details = <String>[roleLabel];
+    final studentClass = classe?.trim();
+    if (studentClass != null && studentClass.isNotEmpty) {
+      details.add(studentClass);
+    }
+    details.add(campusTag);
+    return details.join(" · ");
+  }
+
+  static String _requiredString(Map source, String key) {
+    final value = source[key];
+    if (value is! String || value.trim().isEmpty) {
+      throw FormatException("Champ utilisateur invalide : $key.");
+    }
+    return value.trim();
+  }
+}

eme-frontend/lib/screens/confirmation_screen.dart

@@ -23,7 +23,8 @@ class ConfirmationScreen extends StatelessWidget {
     final dateEmprunt = emprunt.dateEmprunt;
     final date =
         "${_deuxChiffres(dateEmprunt.day)}/${_deuxChiffres(dateEmprunt.month)}/${dateEmprunt.year}";
-    final heure = "${_deuxChiffres(dateEmprunt.hour)}:${_deuxChiffres(dateEmprunt.minute)}";
+    final heure =
+        "${_deuxChiffres(dateEmprunt.hour)}:${_deuxChiffres(dateEmprunt.minute)}";
 
     return Scaffold(
       backgroundColor: EnsupColors.soft,
@@ -48,7 +49,7 @@ class ConfirmationScreen extends StatelessWidget {
                 clipBehavior: Clip.antiAlias,
                 child: Column(
                   children: [
-                    const EnsupTopBar(
+                    EnsupTopBar(
                       brandText: "EME · Confirmation",
                       campusTag: DemoIdentity.campusTag,
                     ),
@@ -63,7 +64,10 @@ class ConfirmationScreen extends StatelessWidget {
                         ),
                         child: Center(
                           child: SingleChildScrollView(
-                            padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 32),
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 28,
+                              vertical: 32,
+                            ),
                             child: ConstrainedBox(
                               constraints: const BoxConstraints(maxWidth: 560),
                               child: Column(
@@ -75,10 +79,15 @@ class ConfirmationScreen extends StatelessWidget {
                                   SizedBox(
                                     width: double.infinity,
                                     child: FilledButton.icon(
-                                      onPressed: () => Navigator.of(context).popUntil(
+                                      onPressed: () =>
-                                        (route) => route.settings.name == "home",
+                                          Navigator.of(context).popUntil(
+                                            (route) =>
+                                                route.settings.name == "home",
+                                          ),
+                                      icon: const Icon(
+                                        Icons.home_outlined,
+                                        size: 18,
                                       ),
-                                      icon: const Icon(Icons.home_outlined, size: 18),
                                       label: Text(
                                         "Retour à l'accueil",
                                         style: GoogleFonts.darkerGrotesque(
@@ -88,9 +97,13 @@ class ConfirmationScreen extends StatelessWidget {
                                       ),
                                       style: FilledButton.styleFrom(
                                         backgroundColor: EnsupColors.cyan,
-                                        padding: const EdgeInsets.symmetric(vertical: 16),
+                                        padding: const EdgeInsets.symmetric(
+                                          vertical: 16,
+                                        ),
                                         shape: RoundedRectangleBorder(
-                                          borderRadius: BorderRadius.circular(10),
+                                          borderRadius: BorderRadius.circular(
+                                            10,
+                                          ),
                                         ),
                                       ),
                                     ),
@@ -118,7 +131,9 @@ class ConfirmationScreen extends StatelessWidget {
       width: double.infinity,
       padding: const EdgeInsets.all(36),
       decoration: BoxDecoration(
-        gradient: const LinearGradient(colors: [Color(0xFFF0FDF4), Color(0xFFECFDF5)]),
+        gradient: const LinearGradient(
+          colors: [Color(0xFFF0FDF4), Color(0xFFECFDF5)],
+        ),
         borderRadius: BorderRadius.circular(16),
         border: Border.all(color: const Color(0xFFBBF7D0), width: 2),
       ),
@@ -129,7 +144,9 @@ class ConfirmationScreen extends StatelessWidget {
             height: 72,
             decoration: BoxDecoration(
               shape: BoxShape.circle,
-              gradient: const LinearGradient(colors: [Color(0xFF16A34A), Color(0xFF22C55E)]),
+              gradient: const LinearGradient(
+                colors: [Color(0xFF16A34A), Color(0xFF22C55E)],
+              ),
               boxShadow: [
                 BoxShadow(
                   color: const Color(0xFF16A34A).withValues(alpha: 0.3),
@@ -153,7 +170,10 @@ class ConfirmationScreen extends StatelessWidget {
           Text(
             "Votre emprunt a bien été enregistré. Vous pouvez récupérer le matériel.",
             textAlign: TextAlign.center,
-            style: GoogleFonts.titilliumWeb(fontSize: 14, color: const Color(0xFF166534)),
+            style: GoogleFonts.titilliumWeb(
+              fontSize: 14,
+              color: const Color(0xFF166534),
+            ),
           ),
         ],
       ),
@@ -191,7 +211,8 @@ class ConfirmationScreen extends StatelessWidget {
           _rrow("Date d'emprunt", date),
           _rrow("Heure", heure),
           _rrow("Campus", item.campus),
-          if (note != null) _rrow("Note", note, valueColor: const Color(0xFFD97706)),
+          if (note != null)
+            _rrow("Note", note, valueColor: const Color(0xFFD97706)),
         ],
       ),
     );
@@ -203,7 +224,13 @@ class ConfirmationScreen extends StatelessWidget {
       child: Row(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          Text(cle, style: GoogleFonts.titilliumWeb(fontSize: 13, color: EnsupColors.muted)),
+          Text(
+            cle,
+            style: GoogleFonts.titilliumWeb(
+              fontSize: 13,
+              color: EnsupColors.muted,
+            ),
+          ),
           const SizedBox(width: 16),
           Expanded(
             child: Text(

eme-frontend/lib/screens/home_screen.dart

@@ -71,7 +71,7 @@ class HomeScreen extends StatelessWidget {
                             child: Column(
                               crossAxisAlignment: CrossAxisAlignment.start,
                               children: [
-                                const ProfileCard(
+                                ProfileCard(
                                   name: DemoIdentity.userName,
                                   subtitle: DemoIdentity.userSubtitle,
                                   initials: DemoIdentity.userInitials,

eme-frontend/lib/screens/login_screen.dart

@@ -21,6 +21,14 @@ class LoginScreen extends StatefulWidget {
 class _LoginScreenState extends State<LoginScreen> {
   bool _connexionEnCours = false;
 
+  @override
+  void initState() {
+    super.initState();
+    if (AuthService.mode == AuthenticationMode.azure) {
+      WidgetsBinding.instance.addPostFrameCallback((_) => _restaurerSession());
+    }
+  }
+
   void _ouvrirEtudiant() {
     Navigator.of(context).push(
       MaterialPageRoute(
@@ -39,7 +47,44 @@ class _LoginScreenState extends State<LoginScreen> {
     );
   }
 
-  void _identifierParQr() {
+  void _ouvrirPourRole(String roleCode) {
+    switch (roleCode) {
+      case "ETUDIANT":
+        _ouvrirEtudiant();
+      case "RESPONSABLE":
+        _ouvrirResponsable();
+      default:
+        throw StateError("Role utilisateur non autorise.");
+    }
+  }
+
+  Future<void> _restaurerSession() async {
+    setState(() => _connexionEnCours = true);
+    try {
+      if (!await AuthService.hasMicrosoftAccount()) {
+        return;
+      }
+
+      final reponse = await ApiClient.get("/auth/me");
+      final profile = AuthService.setProfileFromApi(reponse);
+      if (mounted) {
+        _ouvrirPourRole(profile.roleCode);
+      }
+    } catch (_) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text("La session Microsoft doit etre renouvelee."),
+        ),
+      );
+    } finally {
+      if (mounted) {
+        setState(() => _connexionEnCours = false);
+      }
+    }
+  }
+
+  Future<void> _identifierParQr() async {
     if (_connexionEnCours) return;
     if (AuthService.mode == AuthenticationMode.azure) {
       ScaffoldMessenger.of(context).showSnackBar(
@@ -52,8 +97,7 @@ class _LoginScreenState extends State<LoginScreen> {
       return;
     }
 
-    AuthService.selectDemoStudent();
+    await _connecterMicrosoft(responsableDemo: false);
-    _ouvrirEtudiant();
   }
 
   Future<void> _connecterMicrosoft({required bool responsableDemo}) async {
@@ -64,27 +108,17 @@ class _LoginScreenState extends State<LoginScreen> {
       if (AuthService.mode == AuthenticationMode.demo) {
         if (responsableDemo) {
           AuthService.selectDemoResponsable();
-          _ouvrirResponsable();
         } else {
           AuthService.selectDemoStudent();
-          _ouvrirEtudiant();
         }
-        return;
+      } else {
+        await AuthService.signInWithMicrosoft();
       }
 
-      await AuthService.signInWithMicrosoft();
       final reponse = await ApiClient.get("/auth/me");
-      final roleCode = _roleCode(reponse);
+      final profile = AuthService.setProfileFromApi(reponse);
       if (!mounted) return;
-
+      _ouvrirPourRole(profile.roleCode);
-      switch (roleCode) {
-        case "ETUDIANT":
-          _ouvrirEtudiant();
-        case "RESPONSABLE":
-          _ouvrirResponsable();
-        default:
-          throw StateError("Role utilisateur non autorise.");
-      }
     } catch (error) {
       if (!mounted) return;
       ScaffoldMessenger.of(
@@ -97,25 +131,6 @@ class _LoginScreenState extends State<LoginScreen> {
     }
   }
 
-  String _roleCode(dynamic reponse) {
-    if (reponse is! Map || reponse["data"] is! Map) {
-      throw StateError("Profil utilisateur invalide.");
-    }
-
-    final data = reponse["data"] as Map;
-    if (data["role"] is! Map) {
-      throw StateError("Role utilisateur absent.");
-    }
-
-    final role = data["role"] as Map;
-    final code = role["code"];
-    if (code is! String) {
-      throw StateError("Role utilisateur invalide.");
-    }
-
-    return code;
-  }
-
   @override
   Widget build(BuildContext context) {
     return Scaffold(

eme-frontend/lib/screens/responsable_screen.dart

@@ -1,7 +1,6 @@
 import "package:flutter/material.dart";
 import "package:google_fonts/google_fonts.dart";
 
-import "../demo_identity.dart";
 import "../services/auth_service.dart";
 import "../services/responsable_service.dart";
 import "../theme/ensup_colors.dart";
@@ -463,6 +462,12 @@ class _ResponsableTopBar extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final profile = AuthService.currentProfile;
+    final campusTag = profile?.campusTag ?? "Ensitech · Cergy";
+    final initials = profile?.initials ?? "KB";
+    final userName = profile?.fullName ?? "Karim Benali";
+    final roleLabel = profile?.roleLabel ?? "Responsable matériel";
+
     return Container(
       height: 68,
       padding: const EdgeInsets.symmetric(horizontal: 20),
@@ -533,7 +538,7 @@ class _ResponsableTopBar extends StatelessWidget {
                       ),
                       const SizedBox(width: 6),
                       Text(
-                        DemoIdentity.loginCampusTag,
+                        campusTag,
                         style: GoogleFonts.titilliumWeb(
                           fontSize: 12,
                           fontWeight: FontWeight.w600,
@@ -565,7 +570,7 @@ class _ResponsableTopBar extends StatelessWidget {
                   shape: BoxShape.circle,
                 ),
                 child: Text(
-                  "KB",
+                  initials,
                   style: GoogleFonts.darkerGrotesque(
                     color: Colors.white,
                     fontSize: 13,
@@ -580,7 +585,7 @@ class _ResponsableTopBar extends StatelessWidget {
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: [
                     Text(
-                      "Karim Benali",
+                      userName,
                       style: GoogleFonts.titilliumWeb(
                         fontSize: 13,
                         fontWeight: FontWeight.w700,
@@ -588,7 +593,7 @@ class _ResponsableTopBar extends StatelessWidget {
                       ),
                     ),
                     Text(
-                      "Responsable matériel",
+                      roleLabel,
                       style: GoogleFonts.titilliumWeb(
                         fontSize: 11,
                         color: EnsupColors.muted,

eme-frontend/lib/screens/resultat_retour_screen.dart

@@ -10,7 +10,11 @@ import "../widgets/brand_corners.dart";
 /// Résultat de la restitution (RG17-RG20) : conforme (succès) ou non conforme
 /// (anomalie détectée + notification au responsable).
 class ResultatRetourScreen extends StatelessWidget {
-  const ResultatRetourScreen({super.key, required this.emprunt, required this.anomalies});
+  const ResultatRetourScreen({
+    super.key,
+    required this.emprunt,
+    required this.anomalies,
+  });
 
   final EmpruntItem emprunt;
   final List<AnomalieRetour> anomalies;
@@ -48,7 +52,7 @@ class ResultatRetourScreen extends StatelessWidget {
                 clipBehavior: Clip.antiAlias,
                 child: Column(
                   children: [
-                    const EnsupTopBar(
+                    EnsupTopBar(
                       brandText: "EME · Résultat du contrôle",
                       campusTag: DemoIdentity.campusTag,
                     ),
@@ -63,7 +67,10 @@ class ResultatRetourScreen extends StatelessWidget {
                         ),
                         child: Center(
                           child: SingleChildScrollView(
-                            padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 32),
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 28,
+                              vertical: 32,
+                            ),
                             child: ConstrainedBox(
                               constraints: const BoxConstraints(maxWidth: 560),
                               child: Column(
@@ -73,10 +80,15 @@ class ResultatRetourScreen extends StatelessWidget {
                                   SizedBox(
                                     width: double.infinity,
                                     child: FilledButton.icon(
-                                      onPressed: () => Navigator.of(context).popUntil(
+                                      onPressed: () =>
-                                        (route) => route.settings.name == "home",
+                                          Navigator.of(context).popUntil(
+                                            (route) =>
+                                                route.settings.name == "home",
+                                          ),
+                                      icon: const Icon(
+                                        Icons.home_outlined,
+                                        size: 18,
                                       ),
-                                      icon: const Icon(Icons.home_outlined, size: 18),
                                       label: Text(
                                         "Retour à l'accueil",
                                         style: GoogleFonts.darkerGrotesque(
@@ -86,9 +98,13 @@ class ResultatRetourScreen extends StatelessWidget {
                                       ),
                                       style: FilledButton.styleFrom(
                                         backgroundColor: EnsupColors.cyan,
-                                        padding: const EdgeInsets.symmetric(vertical: 16),
+                                        padding: const EdgeInsets.symmetric(
+                                          vertical: 16,
+                                        ),
                                         shape: RoundedRectangleBorder(
-                                          borderRadius: BorderRadius.circular(10),
+                                          borderRadius: BorderRadius.circular(
+                                            10,
+                                          ),
                                         ),
                                       ),
                                     ),
@@ -116,7 +132,9 @@ class ResultatRetourScreen extends StatelessWidget {
       width: double.infinity,
       padding: const EdgeInsets.all(36),
       decoration: BoxDecoration(
-        gradient: const LinearGradient(colors: [Color(0xFFF0FDF4), Color(0xFFECFDF5)]),
+        gradient: const LinearGradient(
+          colors: [Color(0xFFF0FDF4), Color(0xFFECFDF5)],
+        ),
         borderRadius: BorderRadius.circular(16),
         border: Border.all(color: const Color(0xFFBBF7D0), width: 2),
       ),
@@ -127,7 +145,9 @@ class ResultatRetourScreen extends StatelessWidget {
             height: 72,
             decoration: const BoxDecoration(
               shape: BoxShape.circle,
-              gradient: LinearGradient(colors: [Color(0xFF16A34A), Color(0xFF22C55E)]),
+              gradient: LinearGradient(
+                colors: [Color(0xFF16A34A), Color(0xFF22C55E)],
+              ),
             ),
             child: const Icon(Icons.check, color: Colors.white, size: 36),
           ),
@@ -144,7 +164,10 @@ class ResultatRetourScreen extends StatelessWidget {
           Text(
             "L'emprunt a été clôturé et le matériel est de nouveau disponible.",
             textAlign: TextAlign.center,
-            style: GoogleFonts.titilliumWeb(fontSize: 14, color: const Color(0xFF166534)),
+            style: GoogleFonts.titilliumWeb(
+              fontSize: 14,
+              color: const Color(0xFF166534),
+            ),
           ),
         ],
       ),
@@ -164,12 +187,19 @@ class ResultatRetourScreen extends StatelessWidget {
           decoration: BoxDecoration(
             color: EnsupColors.red.withValues(alpha: 0.06),
             borderRadius: BorderRadius.circular(12),
-            border: Border.all(color: EnsupColors.red.withValues(alpha: 0.2), width: 1.5),
+            border: Border.all(
+              color: EnsupColors.red.withValues(alpha: 0.2),
+              width: 1.5,
+            ),
           ),
           child: Row(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
-              const Icon(Icons.warning_amber_rounded, color: EnsupColors.red, size: 24),
+              const Icon(
+                Icons.warning_amber_rounded,
+                color: EnsupColors.red,
+                size: 24,
+              ),
               const SizedBox(width: 12),
               Expanded(
                 child: Column(
@@ -227,7 +257,10 @@ class ResultatRetourScreen extends StatelessWidget {
                   anomalie.etatRetour,
                   valeurCouleur: EnsupColors.red,
                 ),
-              _drow("Matériel", "${emprunt.materiel.nom} · ${emprunt.materiel.reference}"),
+              _drow(
+                "Matériel",
+                "${emprunt.materiel.nom} · ${emprunt.materiel.reference}",
+              ),
               _drow("Emprunteur", DemoIdentity.userName),
               _drow("Date détection", date),
             ],
@@ -237,7 +270,11 @@ class ResultatRetourScreen extends StatelessWidget {
         Text(
           "Le responsable matériel traitera cette anomalie. Vous pouvez retourner à l'accueil.",
           textAlign: TextAlign.center,
-          style: GoogleFonts.titilliumWeb(fontSize: 13, color: EnsupColors.muted, height: 1.6),
+          style: GoogleFonts.titilliumWeb(
+            fontSize: 13,
+            color: EnsupColors.muted,
+            height: 1.6,
+          ),
         ),
       ],
     );
@@ -249,7 +286,13 @@ class ResultatRetourScreen extends StatelessWidget {
       child: Row(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          Text(cle, style: GoogleFonts.titilliumWeb(fontSize: 13, color: EnsupColors.muted)),
+          Text(
+            cle,
+            style: GoogleFonts.titilliumWeb(
+              fontSize: 13,
+              color: EnsupColors.muted,
+            ),
+          ),
           const SizedBox(width: 16),
           Expanded(
             child: Text(

eme-frontend/lib/services/auth_service.dart

@@ -1,3 +1,4 @@
+import "../models/authenticated_profile.dart";
 import "msal_bridge.dart";
 
 enum AuthenticationMode { demo, azure }
@@ -19,8 +20,11 @@ class AuthService {
   static const String demoResponsableEmail = "karim.benali@ensup.eu";
 
   static String? _demoEmail;
+  static AuthenticatedProfile? _currentProfile;
   static bool _azureInitialized = false;
 
+  static AuthenticatedProfile? get currentProfile => _currentProfile;
+
   static AuthenticationMode get mode {
     return switch (_configuredMode) {
       "demo" => AuthenticationMode.demo,
@@ -41,6 +45,13 @@ class AuthService {
 
   static void clearSession() {
     _demoEmail = null;
+    _currentProfile = null;
+  }
+
+  static AuthenticatedProfile setProfileFromApi(dynamic reponse) {
+    final profile = AuthenticatedProfile.fromApi(reponse);
+    _currentProfile = profile;
+    return profile;
   }
 
   static Future<void> signInWithMicrosoft() async {
@@ -57,6 +68,7 @@ class AuthService {
     if (mode == AuthenticationMode.azure) {
       await _initializeAzure();
       await MsalBridge.signOut();
+      _currentProfile = null;
       return;
     }