ultimas resoluções

lib/features/dashboard/presentation/widgets/teacher_analytics_preview_widget.dart

@@ -1,12 +1,70 @@
 import 'package:flutter/material.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
 
 import '../../../../core/theme/app_theme_extension.dart';
 import '../../../../core/services/auth_service.dart';
+import '../../../../core/services/gamification_service.dart';
+import '../../../../core/models/class_stats.dart';
 
 /// Analytics preview section for teacher dashboard
-class TeacherAnalyticsPreviewWidget extends StatelessWidget {
+class TeacherAnalyticsPreviewWidget extends StatefulWidget {
   const TeacherAnalyticsPreviewWidget({super.key});
 
+  @override
+  State<TeacherAnalyticsPreviewWidget> createState() => _TeacherAnalyticsPreviewWidgetState();
+}
+
+class _TeacherAnalyticsPreviewWidgetState extends State<TeacherAnalyticsPreviewWidget> {
+  List<StudentRanking> _topStudents = [];
+  bool _loading = true;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadTopStudents();
+  }
+
+  Future<void> _loadTopStudents() async {
+    try {
+      final user = AuthService.currentUser;
+      if (user == null) return;
+
+      // Obter turmas do professor
+      final classesSnapshot = await FirebaseFirestore.instance
+          .collection('classes')
+          .where('teacherId', isEqualTo: user.uid)
+          .get();
+
+      List<StudentRanking> allStudents = [];
+      
+      // Buscar ranking de cada turma
+      for (final classDoc in classesSnapshot.docs) {
+        final classId = classDoc.id;
+        // Forçar atualização para obter dados mais recentes
+        final rankings = await GamificationService.getClassRanking(classId);
+        allStudents.addAll(rankings);
+      }
+
+      // Ordenar por score e pegar os top 4
+      allStudents.sort((a, b) => b.overallScore.compareTo(a.overallScore));
+      final top4 = allStudents.take(4).toList();
+
+      if (mounted) {
+        setState(() {
+          _topStudents = top4;
+          _loading = false;
+        });
+      }
+    } catch (e) {
+      print('Error loading top students: $e');
+      if (mounted) {
+        setState(() {
+          _loading = false;
+        });
+      }
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final user = AuthService.currentUser;
@@ -161,33 +219,31 @@ class TeacherAnalyticsPreviewWidget extends StatelessWidget {
           const SizedBox(height: 12),
 
           // Student List Preview
-          _buildStudentPerformanceItem(
-            context,
-            'Ana Silva',
-            95,
-            Theme.of(context).colorScheme.tertiary,
-          ),
-          const SizedBox(height: 8),
-          _buildStudentPerformanceItem(
-            context,
-            'João Costa',
-            88,
-            Theme.of(context).colorScheme.primary,
-          ),
-          const SizedBox(height: 8),
-          _buildStudentPerformanceItem(
-            context,
-            'Maria Santos',
-            82,
-            Theme.of(context).colorScheme.primary,
-          ),
-          const SizedBox(height: 8),
-          _buildStudentPerformanceItem(
-            context,
-            'Pedro Lima',
-            45,
-            Theme.of(context).colorScheme.secondary,
-          ),
+          if (_loading)
+            const Center(child: CircularProgressIndicator())
+          else if (_topStudents.isEmpty)
+            const Center(
+              child: Text(
+                'Nenhum aluno encontrado',
+                style: TextStyle(fontSize: 14),
+              ),
+            )
+          else
+            ..._topStudents.asMap().entries.map((entry) {
+              final index = entry.key;
+              final student = entry.value;
+              final color = _getStudentColor(context, index);
+              
+              return Padding(
+                padding: const EdgeInsets.only(bottom: 8),
+                child: _buildStudentPerformanceItem(
+                  context,
+                  student.studentName,
+                  student.overallScore.toInt(),
+                  color,
+                ),
+              );
+            }).toList(),
 
           const SizedBox(height: 20),
 
@@ -279,6 +335,16 @@ class TeacherAnalyticsPreviewWidget extends StatelessWidget {
     );
   }
 
+  Color _getStudentColor(BuildContext context, int index) {
+    final colors = [
+      Theme.of(context).colorScheme.tertiary,
+      Theme.of(context).colorScheme.primary,
+      Theme.of(context).colorScheme.primary,
+      Theme.of(context).colorScheme.secondary,
+    ];
+    return colors[index % colors.length];
+  }
+
   Widget _buildStudentPerformanceItem(
     BuildContext context,
     String name,