240405/LearnIT
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Finalização de detalhes e pequenas adições em dashboards de alunos e professores

Browse Source
This commit is contained in:
240405
2026-05-18 22:48:27 +01:00
parent c0ade9ef76
commit 7f12f3eb1f
58 changed files with 1347 additions and 1065 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
lib/features/dashboard/presentation/widgets/dashboard_action_card.dart
View File

@@ -245,7 +245,7 @@ class DashboardActionCard extends StatelessWidget {
}
}
/// Surface-styled vertical card (Quiz, Criar Disciplina, etc.).
/// Surface-styled vertical card (Quiz, Criar Turma, etc.).
class DashboardActionCardSurface extends StatelessWidget {
const DashboardActionCardSurface({
super.key,

156
lib/features/dashboard/presentation/widgets/progress_hero_widget.dart
View File

@@ -187,24 +187,27 @@ class _ProgressHeroWidgetState extends State<ProgressHeroWidget> {
const SizedBox(height: 16),
// Progress Bar
Container(
height: 12,
decoration: BoxDecoration(
color: Colors.white.withOpacity(0.3),
borderRadius: BorderRadius.circular(6),
),
child: FractionallySizedBox(
alignment: Alignment.centerLeft,
widthFactor: overallProgress,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
AppThemeExtras.of(context).heroProgressStart,
AppThemeExtras.of(context).heroProgressEnd,
],
GestureDetector(
onTap: () => _showProgressExplanation(context),
child: Container(
height: 12,
decoration: BoxDecoration(
color: Colors.white.withOpacity(0.3),
borderRadius: BorderRadius.circular(6),
),
child: FractionallySizedBox(
alignment: Alignment.centerLeft,
widthFactor: overallProgress,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
AppThemeExtras.of(context).heroProgressStart,
AppThemeExtras.of(context).heroProgressEnd,
],
),
borderRadius: BorderRadius.circular(6),
),
borderRadius: BorderRadius.circular(6),
),
),
),
@@ -215,10 +218,14 @@ class _ProgressHeroWidgetState extends State<ProgressHeroWidget> {
Row(
children: [
Expanded(
child: _buildStatCard(
icon: Icons.access_time,
value: '${(studyTimeMinutes / 60).toStringAsFixed(1)}h',
label: 'Tempo de Estudo',
child: GestureDetector(
onTap: () => _showStudyTimeDetails(context, userStats),
child: _buildStatCard(
icon: Icons.access_time,
value:
'${(studyTimeMinutes / 60).toStringAsFixed(1)}h',
label: 'Tempo de Estudo',
),
),
),
const SizedBox(width: 12),
@@ -362,4 +369,111 @@ class _ProgressHeroWidgetState extends State<ProgressHeroWidget> {
),
);
}
void _showProgressExplanation(BuildContext context) {
final cs = Theme.of(context).colorScheme;
showDialog(
context: context,
builder: (ctx) => AlertDialog(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
title: Row(
children: [
Icon(Icons.info_outline, color: cs.primary),
const SizedBox(width: 8),
const Text('Progresso Geral'),
],
),
content: const Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'O Progresso Geral representa a média dos níveis de domínio dos conceitos que já dominaste.',
style: TextStyle(fontSize: 14),
),
SizedBox(height: 12),
Text(
'Como é calculado:',
style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
),
SizedBox(height: 8),
Text(
'• Cada conceito tem um nível de 0 a 100\n'
'• O progresso é a média de todos os conceitos dominados\n'
'• Quanto mais alto, melhor o teu domínio',
style: TextStyle(fontSize: 13, color: Colors.grey),
),
],
),
actions: [
TextButton(
onPressed: () => Navigator.of(ctx).pop(),
child: const Text('Entendi'),
),
],
),
);
}
void _showStudyTimeDetails(BuildContext context, UserStats? userStats) {
final cs = Theme.of(context).colorScheme;
final totalMinutes = userStats?.totalStudyTime ?? 0;
final weeklyMinutes = userStats?.weeklyStudyTime ?? 0;
final monthlyMinutes = userStats?.monthlyStudyTime ?? 0;
showDialog(
context: context,
builder: (ctx) => AlertDialog(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
title: Row(
children: [
Icon(Icons.access_time, color: cs.primary),
const SizedBox(width: 8),
const Text('Tempo de Estudo'),
],
),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
_buildTimeRow('Total', totalMinutes, cs),
const SizedBox(height: 12),
_buildTimeRow('Esta semana', weeklyMinutes, cs),
const SizedBox(height: 12),
_buildTimeRow('Este mês', monthlyMinutes, cs),
const SizedBox(height: 16),
const Text(
'O tempo é contado automaticamente quando completas quizzes.',
style: TextStyle(fontSize: 12, color: Colors.grey),
),
],
),
actions: [
TextButton(
onPressed: () => Navigator.of(ctx).pop(),
child: const Text('Fechar'),
),
],
),
);
}
Widget _buildTimeRow(String label, int minutes, ColorScheme cs) {
final hours = minutes ~/ 60;
final mins = minutes % 60;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(label, style: TextStyle(fontSize: 14, color: cs.onSurface)),
Text(
hours > 0 ? '${hours}h ${mins}min' : '${mins}min',
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.bold,
color: cs.primary,
),
),
],
);
}
}

319
lib/features/dashboard/presentation/widgets/teacher_analytics_preview_widget.dart
View File

@@ -1,7 +1,6 @@
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';
@@ -11,10 +10,12 @@ class TeacherAnalyticsPreviewWidget extends StatefulWidget {
const TeacherAnalyticsPreviewWidget({super.key});
@override
State<TeacherAnalyticsPreviewWidget> createState() => _TeacherAnalyticsPreviewWidgetState();
State<TeacherAnalyticsPreviewWidget> createState() =>
_TeacherAnalyticsPreviewWidgetState();
}
class _TeacherAnalyticsPreviewWidgetState extends State<TeacherAnalyticsPreviewWidget> {
class _TeacherAnalyticsPreviewWidgetState
extends State<TeacherAnalyticsPreviewWidget> {
List<StudentRanking> _topStudents = [];
bool _loading = true;
@@ -36,7 +37,7 @@ class _TeacherAnalyticsPreviewWidgetState extends State<TeacherAnalyticsPreviewW
.get();
List<StudentRanking> allStudents = [];
// Buscar ranking de cada turma
for (final classDoc in classesSnapshot.docs) {
final classId = classDoc.id;
@@ -67,232 +68,130 @@ class _TeacherAnalyticsPreviewWidgetState extends State<TeacherAnalyticsPreviewW
@override
Widget build(BuildContext context) {
final user = AuthService.currentUser;
final userName = user?.displayName ?? 'Professor';
final userEmail = user?.email ?? '';
return Container(
margin: const EdgeInsets.only(top: 24),
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.surface,
borderRadius: BorderRadius.circular(16),
border: Border.all(
color: Theme.of(context).colorScheme.outline.withOpacity(0.2),
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
_buildQuickStat(
icon: Icons.check_circle,
label: 'Alunos Ativos',
value: '18/24',
color: Theme.of(context).colorScheme.primary,
),
const SizedBox(width: 12),
_buildQuickStat(
icon: Icons.warning_amber,
label: 'Precisam Apoio',
value: '3',
color: Theme.of(context).colorScheme.secondary,
),
const SizedBox(width: 12),
_buildQuickStat(
icon: Icons.emoji_events,
label: 'Média Turma',
value: '72%',
color: Theme.of(context).colorScheme.primary.withOpacity(0.8),
),
],
),
boxShadow: [
BoxShadow(
color: Theme.of(context).colorScheme.shadow.withOpacity(0.05),
blurRadius: 10,
offset: const Offset(0, 4),
),
],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// Profile Header
Row(
children: [
Container(
width: 48,
height: 48,
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
AppThemeExtras.of(context).actionCardGradientStart,
AppThemeExtras.of(context).actionCardGradientEnd,
],
),
borderRadius: BorderRadius.circular(24),
),
child: const Icon(Icons.school, color: Colors.white, size: 24),
const SizedBox(height: 20),
// Top Performing Students Preview
Row(
children: [
Icon(
Icons.leaderboard,
color: Theme.of(context).colorScheme.secondary,
size: 20,
),
const SizedBox(width: 8),
Text(
'Melhores Desempenhos',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontSize: 16,
fontWeight: FontWeight.bold,
),
const SizedBox(width: 16),
),
],
),
const SizedBox(height: 12),
// Student List Preview
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),
// Content Quality Alert
Container(
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.surfaceContainerHighest,
borderRadius: BorderRadius.circular(12),
border: Border.all(
color: Theme.of(context).colorScheme.outline.withOpacity(0.2),
),
),
child: Row(
children: [
Icon(
Icons.info_outline,
color: Theme.of(context).colorScheme.primary,
size: 20,
),
const SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
userName,
'Qualidade do Conteúdo',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontSize: 18,
fontSize: 14,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 2),
SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(
userEmail,
style: TextStyle(
color: Theme.of(
context,
).colorScheme.onSurfaceVariant,
fontSize: 14,
),
),
if (userEmail.length > 20) ...[
const SizedBox(width: 8),
Icon(
Icons.more_horiz,
color: Theme.of(
context,
).colorScheme.onSurfaceVariant,
size: 16,
),
],
],
Text(
'12 conteúdos verificados • 2 pendentes de revisão',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurfaceVariant,
fontSize: 12,
),
),
],
),
),
Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: Theme.of(
context,
).colorScheme.secondary.withOpacity(0.1),
borderRadius: BorderRadius.circular(8),
),
child: Icon(
Icons.settings,
color: Theme.of(context).colorScheme.secondary,
size: 20,
),
),
],
),
const SizedBox(height: 20),
// Quick Stats Row
Row(
children: [
_buildQuickStat(
icon: Icons.check_circle,
label: 'Alunos Ativos',
value: '18/24',
color: Theme.of(context).colorScheme.primary,
),
const SizedBox(width: 12),
_buildQuickStat(
icon: Icons.warning_amber,
label: 'Precisam Apoio',
value: '3',
color: Theme.of(context).colorScheme.secondary,
),
const SizedBox(width: 12),
_buildQuickStat(
icon: Icons.emoji_events,
label: 'Média Disciplina',
value: '72%',
color: Theme.of(context).colorScheme.primary.withOpacity(0.8),
),
],
),
const SizedBox(height: 20),
// Top Performing Students Preview
Row(
children: [
Icon(
Icons.leaderboard,
color: Theme.of(context).colorScheme.secondary,
size: 20,
),
const SizedBox(width: 8),
Text(
'Melhores Desempenhos',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontSize: 16,
fontWeight: FontWeight.bold,
),
),
],
),
const SizedBox(height: 12),
// Student List Preview
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),
// Content Quality Alert
Container(
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.surfaceContainerHighest,
borderRadius: BorderRadius.circular(12),
border: Border.all(
color: Theme.of(context).colorScheme.outline.withOpacity(0.2),
),
),
child: Row(
children: [
Icon(
Icons.info_outline,
color: Theme.of(context).colorScheme.primary,
size: 20,
),
const SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Qualidade do Conteúdo',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontSize: 14,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 2),
Text(
'12 conteúdos verificados • 2 pendentes de revisão',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurfaceVariant,
fontSize: 12,
),
),
],
),
),
],
),
),
],
),
),
],
);
}

8
lib/features/dashboard/presentation/widgets/teacher_classes_list_widget.dart
View File

@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
import '../../../../core/services/auth_service.dart';
import '../../../classes/presentation/pages/class_students_page.dart';
/// Widget para listar as disciplinas criadas pelo professor
/// Widget para listar as turmas criadas pelo professor
class TeacherClassesListWidget extends StatelessWidget {
const TeacherClassesListWidget({super.key});
@@ -44,7 +44,7 @@ class TeacherClassesListWidget extends StatelessWidget {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 16.0),
child: Text(
'Ainda não criaste nenhuma disciplina.',
'Ainda não criaste nenhuma turma.',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurfaceVariant,
fontSize: 14,
@@ -65,7 +65,7 @@ class TeacherClassesListWidget extends StatelessWidget {
mainAxisSize: MainAxisSize.min,
children: [
Text(
'As Minhas Disciplinas',
'As Minhas Turmas',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontSize: 20,
@@ -144,7 +144,7 @@ class TeacherClassesListWidget extends StatelessWidget {
Padding(
padding: const EdgeInsets.all(20),
child: Text(
'As Minhas Disciplinas',
'As Minhas Turmas',
style: TextStyle(
color: cs.onSurface,
fontSize: 20,

69
lib/features/dashboard/presentation/widgets/teacher_hero_widget.dart
View File

@@ -31,7 +31,7 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
final user = AuthService.currentUser;
if (user == null) return;
// Obter disciplinas do professor
// Obter turmas do professor
final classesSnapshot = await FirebaseFirestore.instance
.collection('classes')
.where('teacherId', isEqualTo: user.uid)
@@ -116,7 +116,7 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Visão Geral da Disciplina',
'Visão Geral da Turma',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontSize: 20,
@@ -193,7 +193,7 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
children: [
const Flexible(
child: Text(
'Progresso Médio da Disciplina',
'Progresso Médio da Turma',
maxLines: 2,
overflow: TextOverflow.ellipsis,
style: TextStyle(
@@ -226,24 +226,27 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
const SizedBox(height: 16),
// Progress Bar
Container(
height: 12,
decoration: BoxDecoration(
color: Colors.white.withOpacity(0.3),
borderRadius: BorderRadius.circular(6),
),
child: FractionallySizedBox(
alignment: Alignment.centerLeft,
widthFactor: classAverageProgress,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
AppThemeExtras.of(context).heroProgressStart,
AppThemeExtras.of(context).heroProgressEnd,
],
GestureDetector(
onTap: () => _showProgressExplanation(context),
child: Container(
height: 12,
decoration: BoxDecoration(
color: Colors.white.withOpacity(0.3),
borderRadius: BorderRadius.circular(6),
),
child: FractionallySizedBox(
alignment: Alignment.centerLeft,
widthFactor: classAverageProgress,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
AppThemeExtras.of(context).heroProgressStart,
AppThemeExtras.of(context).heroProgressEnd,
],
),
borderRadius: BorderRadius.circular(6),
),
borderRadius: BorderRadius.circular(6),
),
),
),
@@ -369,14 +372,14 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
_buildActivityItem(
context,
'Nenhuma atividade recente',
'Comece criando disciplinas e conteúdos',
'Comece criando turmas e conteúdos',
Theme.of(context).colorScheme.onSurfaceVariant,
),
);
return activities;
}
// Adicionar atividades baseadas nas estatísticas das disciplinas
// Adicionar atividades baseadas nas estatísticas das turmas
for (final stats in _classStats.take(3)) {
if (stats.activeQuizzes > 0) {
activities.add(
@@ -425,7 +428,7 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
_buildActivityItem(
context,
'Nenhuma atividade recente',
'Comece criando disciplinas e conteúdos',
'Comece criando turmas e conteúdos',
Theme.of(context).colorScheme.onSurfaceVariant,
),
]
@@ -473,4 +476,24 @@ class _TeacherHeroWidgetState extends State<TeacherHeroWidget> {
],
);
}
void _showProgressExplanation(BuildContext context) {
showDialog(
context: context,
builder: (context) => AlertDialog(
title: const Text('Progresso Médio da Turma'),
content: const Text(
'O progresso médio da turma é calculado com base no domínio dos conceitos por cada aluno. '
'Cada aluno tem um nível de domínio para cada conceito (0-100%), e o progresso médio '
'é a média de todos esses níveis de domínio em toda a turma.',
),
actions: [
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: const Text('Entendi'),
),
],
),
);
}
}

22
lib/features/dashboard/presentation/widgets/teacher_quick_actions_widget.dart
View File

@@ -20,7 +20,7 @@ class TeacherQuickActionsWidget extends StatefulWidget {
class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
bool _isCreatingClass = false;
/// Mesmas dimensões dos cards em "As Minhas Disciplinas".
/// Mesmas dimensões dos cards em "As Minhas Turmas".
static const double _scrollCardWidth = 200;
static const double _scrollRowHeight = 156;
static const double _cardMinHeight = 156;
@@ -128,7 +128,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
final cs = Theme.of(context).colorScheme;
return DashboardActionCardSurface(
title: 'Analytics',
subtitle: 'Desempenho da disciplina',
subtitle: 'Desempenho da turma',
icon: Icons.analytics,
minHeight: _cardMinHeight,
titleFontSize: _titleFontSize,
@@ -142,7 +142,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
color: cs.primary.withOpacity(0.1),
borderRadius: BorderRadius.circular(10),
),
child: Icon(Icons.analytics, color: cs.primary, size: _iconSize),
child: const Icon(Icons.analytics, color: Colors.blue, size: 28),
),
onTap: () => context.go('/teacher/analytics'),
);
@@ -153,7 +153,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
return ClipRRect(
borderRadius: BorderRadius.circular(16),
child: DashboardActionCardSurface(
title: 'Criar Disciplina',
title: 'Criar Turma',
subtitle: 'Gerar código de acesso',
icon: Icons.school,
minHeight: _cardMinHeight,
@@ -202,7 +202,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
},
),
_TeacherActionItem(
title: 'Criar Disciplina',
title: 'Criar Turma',
subtitle: 'Gerar código de acesso',
icon: Icons.school,
onTap: () {
@@ -221,7 +221,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
),
_TeacherActionItem(
title: 'Analytics',
subtitle: 'Desempenho da disciplina',
subtitle: 'Desempenho da turma',
icon: Icons.analytics,
onTap: () {
Navigator.pop(context);
@@ -367,7 +367,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
borderRadius: BorderRadius.circular(16),
),
title: Text(
'Criar Nova Disciplina',
'Criar Nova Turma',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontWeight: FontWeight.bold,
@@ -378,7 +378,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Nome da disciplina:',
'Nome da turma:',
style: TextStyle(
color: Theme.of(context).colorScheme.onSurfaceVariant,
fontSize: 14,
@@ -432,7 +432,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
),
const SizedBox(width: 10),
Text(
'A carregar disciplinas...',
'A carregar turmas...',
style: TextStyle(
color: Theme.of(
context,
@@ -571,7 +571,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
'Disciplina "$className" criada com sucesso! Código: $classCode',
'Turma "$className" criada com sucesso! Código: $classCode',
),
backgroundColor: Theme.of(context).colorScheme.primary,
behavior: SnackBarBehavior.floating,
@@ -585,7 +585,7 @@ class _TeacherQuickActionsWidgetState extends State<TeacherQuickActionsWidget> {
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Erro ao criar disciplina: $e'),
content: Text('Erro ao criar turma: $e'),
backgroundColor: Colors.red,
behavior: SnackBarBehavior.floating,
shape: RoundedRectangleBorder(