Files
LearnIT/lib/features/quiz/presentation/pages/quiz_management_page.dart
2026-05-17 22:21:23 +01:00

679 lines
22 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:go_router/go_router.dart';
import '../../../../core/services/auth_service.dart';
import '../../../../core/utils/logger.dart';
/// Página para gerenciar quizzes (eliminar quizzes feitos)
class QuizManagementPage extends StatefulWidget {
const QuizManagementPage({super.key});
@override
State<QuizManagementPage> createState() => _QuizManagementPageState();
}
class _QuizManagementPageState extends State<QuizManagementPage> {
List<Map<String, dynamic>> _quizHistory = [];
bool _loading = true;
String _userRole = '';
// Disciplina seleccionada (null = vista de disciplinas)
String? _selectedDisciplineId;
Map<String, String> _classNames = {}; // classId → name
@override
void initState() {
super.initState();
_loadUserRole();
_loadQuizHistory();
}
Future<void> _loadUserRole() async {
final user = AuthService.currentUser;
if (user != null) {
final userDoc = await FirebaseFirestore.instance
.collection('users')
.doc(user.uid)
.get();
if (userDoc.exists) {
setState(() {
_userRole = userDoc.data()?['role'] ?? '';
});
}
}
}
Future<void> _loadQuizHistory() async {
try {
final user = AuthService.currentUser;
if (user == null) return;
Query query;
if (_userRole == 'teacher') {
// Professor: ver todos os quizzes criados
query = FirebaseFirestore.instance
.collection('teacherQuizzes')
.where('teacherId', isEqualTo: user.uid)
.orderBy('createdAt', descending: true);
} else {
// Aluno: ver quizzes criados pelo próprio aluno + conceitos dominados
final results = await Future.wait([
FirebaseFirestore.instance
.collection('userStats')
.doc(user.uid)
.get(),
FirebaseFirestore.instance
.collection('quizHistory')
.doc(user.uid)
.collection('quizzes')
.orderBy('createdAt', descending: true)
.get(),
]);
final userStatsSnapshot = results[0] as DocumentSnapshot;
final studentQuizzesSnapshot = results[1] as QuerySnapshot;
List<Map<String, dynamic>> quizList = [];
// Adicionar quizzes criados pelo aluno
for (final doc in studentQuizzesSnapshot.docs) {
final data = Map<String, dynamic>.from(doc.data() as Map);
data['id'] = doc.id;
data['title'] = data['materialName'] ?? 'Quiz sem nome';
data['type'] = 'created';
quizList.add(data);
}
// Adicionar conceitos dominados
if (userStatsSnapshot.exists) {
final stats = userStatsSnapshot.data() as Map<String, dynamic>?;
if (stats != null) {
final masteredConcepts =
(stats['masteredConcepts'] as List<dynamic>?)
?.map((c) => Map<String, dynamic>.from(c as Map))
.toList() ??
[];
for (final concept in masteredConcepts) {
quizList.add({
'id': concept['conceptName'] ?? '',
'title': concept['conceptName'] ?? 'Conceito sem nome',
'score': concept['masteryLevel'] ?? 0,
'totalQuestions': 100, // Simulado
'completedAt': concept['masteredAt'] ?? Timestamp.now(),
'type': 'concept',
});
}
}
}
setState(() {
_quizHistory = quizList;
_loading = false;
});
return;
}
final snapshot = await query.get();
final quizzes = snapshot.docs
.map((doc) {
final data = Map<String, dynamic>.from(doc.data() as Map);
data['id'] = doc.id;
return data;
})
.cast<Map<String, dynamic>>()
.toList();
// Obter nomes das disciplinas
final classIdSet = <String>{};
for (final q in quizzes) {
final ids = (q['classIds'] as List?)?.cast<String>() ?? [];
classIdSet.addAll(ids);
}
final classNamesMap = <String, String>{};
if (classIdSet.isNotEmpty) {
final docs = await Future.wait(
classIdSet.map(
(id) =>
FirebaseFirestore.instance.collection('classes').doc(id).get(),
),
);
for (final doc in docs.where((d) => d.exists)) {
classNamesMap[doc.id] = doc.data()?['name'] as String? ?? doc.id;
}
}
setState(() {
_quizHistory = quizzes;
_classNames = classNamesMap;
_loading = false;
});
} catch (e) {
Logger.error('Error loading quiz history: $e');
setState(() {
_loading = false;
});
}
}
Future<void> _deleteQuiz(String quizId, String quizTitle, String type) async {
try {
String confirmMessage;
String successMessage;
if (_userRole == 'teacher') {
confirmMessage =
'Tem certeza que deseja eliminar o quiz "$quizTitle"? Esta ação não pode ser desfeita.';
successMessage = 'Quiz eliminado com sucesso!';
} else {
if (type == 'created') {
confirmMessage =
'Tem certeza que deseja eliminar seu quiz "$quizTitle"?';
successMessage = 'Quiz eliminado com sucesso!';
} else {
confirmMessage =
'Tem certeza que deseja remover o conceito "$quizTitle" do seu histórico?';
successMessage = 'Conceito removido com sucesso!';
}
}
final confirmed = await _showDeleteConfirmation(
quizTitle,
confirmMessage,
);
if (!confirmed) return;
if (_userRole == 'teacher') {
// Professor: eliminar quiz criado
await FirebaseFirestore.instance
.collection('teacherQuizzes')
.doc(quizId)
.delete();
// Também eliminar do histórico de alunos
final historySnapshot = await FirebaseFirestore.instance
.collection('quizHistory')
.where('quizId', isEqualTo: quizId)
.get();
for (final doc in historySnapshot.docs) {
await doc.reference.delete();
}
} else {
// Aluno: remover quiz criado ou conceito dominado
if (type == 'created') {
// Remover quiz criado pelo aluno
final user = AuthService.currentUser;
if (user != null) {
await FirebaseFirestore.instance
.collection('quizHistory')
.doc(user.uid)
.collection('quizzes')
.doc(quizId)
.delete();
}
} else {
// Remover conceito dominado
final user = AuthService.currentUser;
if (user != null) {
final userStatsDoc = await FirebaseFirestore.instance
.collection('userStats')
.doc(user.uid)
.get();
if (userStatsDoc.exists) {
final userStats = userStatsDoc.data() as Map<String, dynamic>;
final masteredConcepts =
(userStats['masteredConcepts'] as List<dynamic>?)
?.map((c) => Map<String, dynamic>.from(c as Map))
.toList() ??
[];
// Encontrar o conceito específico para remover
final conceptToRemove = masteredConcepts.firstWhere(
(c) => c['conceptName'] == quizId,
orElse: () => {},
);
if (conceptToRemove.isNotEmpty) {
await FirebaseFirestore.instance
.collection('userStats')
.doc(user.uid)
.update({
'masteredConcepts': FieldValue.arrayRemove([
conceptToRemove,
]),
});
}
}
}
}
}
_loadQuizHistory(); // Recarregar lista
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(successMessage),
backgroundColor: Colors.green,
),
);
}
} catch (e) {
Logger.error('Error deleting quiz: $e');
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Erro ao eliminar: $e'),
backgroundColor: Colors.red,
),
);
}
}
}
Future<bool> _showDeleteConfirmation(String quizTitle, String message) async {
final result = await showDialog<bool>(
context: context,
builder: (context) => AlertDialog(
title: Text(
_userRole == 'teacher' ? 'Eliminar Quiz' : 'Confirmar Eliminação',
),
content: Text(message),
actions: [
TextButton(
onPressed: () => Navigator.of(context).pop(false),
child: const Text('Cancelar'),
),
ElevatedButton(
onPressed: () => Navigator.of(context).pop(true),
style: ElevatedButton.styleFrom(backgroundColor: Colors.red),
child: const Text('Eliminar'),
),
],
),
);
return result ?? false;
}
Map<String, List<Map<String, dynamic>>> _groupByDiscipline() {
final Map<String, List<Map<String, dynamic>>> groups = {};
for (final quiz in _quizHistory) {
final quizClassIds = (quiz['classIds'] as List?)?.cast<String>() ?? [];
String? groupId = quizClassIds.cast<String?>().firstWhere(
(cid) => cid != null && _classNames.containsKey(cid),
orElse: () => null,
);
groupId ??= quizClassIds.isNotEmpty ? quizClassIds.first : '__geral__';
groups.putIfAbsent(groupId, () => []).add(quiz);
}
return groups;
}
@override
Widget build(BuildContext context) {
final cs = Theme.of(context).colorScheme;
return PopScope(
canPop: _selectedDisciplineId == null,
onPopInvokedWithResult: (didPop, _) {
if (!didPop && _selectedDisciplineId != null) {
setState(() => _selectedDisciplineId = null);
}
},
child: Scaffold(
backgroundColor: cs.surface,
appBar: AppBar(
title: Text(
_userRole == 'teacher' ? 'Gerenciar Quizzes' : 'Meu Histórico',
),
backgroundColor: cs.surface,
foregroundColor: cs.onSurface,
elevation: 0,
leading: IconButton(
icon: const Icon(Icons.arrow_back),
onPressed: () {
if (_userRole == 'teacher' && _selectedDisciplineId != null) {
setState(() => _selectedDisciplineId = null);
return;
}
if (Navigator.of(context).canPop()) {
Navigator.of(context).pop();
} else {
context.go(
_userRole == 'teacher'
? '/teacher-dashboard'
: '/student-dashboard',
);
}
},
),
),
body: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [cs.primary.withValues(alpha: 0.05), cs.surface],
),
),
child: _loading
? const Center(child: CircularProgressIndicator())
: _quizHistory.isEmpty
? _buildEmptyState()
: _userRole == 'teacher'
? _buildTeacherBody(cs)
: ListView.builder(
padding: const EdgeInsets.all(16),
itemCount: _quizHistory.length,
itemBuilder: (context, index) {
final quiz = _quizHistory[index];
return _buildQuizCard(quiz)
.animate()
.slideX(duration: const Duration(milliseconds: 300))
.then(delay: Duration(milliseconds: index * 50));
},
),
),
),
);
}
Widget _buildTeacherBody(ColorScheme cs) {
final groups = _groupByDiscipline();
// Vista de quizzes de uma disciplina
if (_selectedDisciplineId != null) {
final quizzes = groups[_selectedDisciplineId] ?? [];
final disciplineName =
_classNames[_selectedDisciplineId] ??
(_selectedDisciplineId == '__geral__'
? 'Geral'
: _selectedDisciplineId!);
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(8, 8, 16, 0),
child: Row(
children: [
IconButton(
icon: Icon(Icons.arrow_back, color: cs.onSurface),
onPressed: () => setState(() => _selectedDisciplineId = null),
),
const SizedBox(width: 4),
Expanded(
child: Text(
disciplineName,
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
color: cs.onSurface,
),
),
),
Text(
'${quizzes.length} quiz${quizzes.length != 1 ? 'zes' : ''}',
style: TextStyle(fontSize: 13, color: cs.onSurfaceVariant),
),
],
),
),
const Divider(height: 1),
Expanded(
child: ListView.builder(
padding: const EdgeInsets.all(16),
itemCount: quizzes.length,
itemBuilder: (context, index) {
final quiz = quizzes[index];
return _buildQuizCard(quiz)
.animate()
.slideX(duration: const Duration(milliseconds: 300))
.then(delay: Duration(milliseconds: index * 50));
},
),
),
],
);
}
// Vista de disciplinas
final disciplineIds = groups.keys.toList();
return ListView.separated(
padding: const EdgeInsets.all(16),
itemCount: disciplineIds.length,
separatorBuilder: (_, __) => const SizedBox(height: 12),
itemBuilder: (context, i) {
final dId = disciplineIds[i];
final dName = _classNames[dId] ?? (dId == '__geral__' ? 'Geral' : dId);
final count = groups[dId]!.length;
return InkWell(
borderRadius: BorderRadius.circular(16),
onTap: () => setState(() => _selectedDisciplineId = dId),
child: Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: cs.surface,
borderRadius: BorderRadius.circular(16),
border: Border.all(color: cs.outline.withValues(alpha: 0.15)),
boxShadow: [
BoxShadow(
color: cs.shadow.withValues(alpha: 0.05),
blurRadius: 8,
offset: const Offset(0, 2),
),
],
),
child: Row(
children: [
Container(
width: 48,
height: 48,
decoration: BoxDecoration(
color: cs.primary.withValues(alpha: 0.1),
borderRadius: BorderRadius.circular(12),
),
child: Icon(Icons.school, color: cs.primary, size: 26),
),
const SizedBox(width: 16),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
dName,
maxLines: 2,
overflow: TextOverflow.ellipsis,
style: TextStyle(
fontSize: 15,
fontWeight: FontWeight.bold,
color: cs.onSurface,
),
),
const SizedBox(height: 4),
Text(
'$count quiz${count != 1 ? 'zes' : ''} criado${count != 1 ? 's' : ''}',
style: TextStyle(
fontSize: 13,
color: cs.onSurfaceVariant,
),
),
],
),
),
Icon(Icons.chevron_right, color: cs.onSurfaceVariant),
],
),
),
);
},
);
}
Widget _buildEmptyState() {
final cs = Theme.of(context).colorScheme;
return Center(
child: Padding(
padding: const EdgeInsets.all(32),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
_userRole == 'teacher'
? Icons.quiz_outlined
: Icons.history_edu_outlined,
size: 64,
color: cs.onSurfaceVariant,
),
const SizedBox(height: 16),
Text(
_userRole == 'teacher'
? 'Nenhum quiz criado'
: 'Nenhum quiz no histórico',
style: TextStyle(
color: cs.onSurface,
fontSize: 20,
fontWeight: FontWeight.bold,
),
textAlign: TextAlign.center,
),
const SizedBox(height: 8),
Text(
_userRole == 'teacher'
? 'Crie seu primeiro quiz para começar!'
: 'Complete alguns quizzes para ver seu histórico aqui.',
style: TextStyle(color: cs.onSurfaceVariant, fontSize: 14),
textAlign: TextAlign.center,
),
],
),
),
);
}
Widget _buildQuizCard(Map<String, dynamic> quiz) {
final cs = Theme.of(context).colorScheme;
return Container(
margin: const EdgeInsets.only(bottom: 12),
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: cs.surface,
borderRadius: BorderRadius.circular(16),
border: Border.all(color: cs.outline.withValues(alpha: 0.2)),
boxShadow: [
BoxShadow(
color: cs.shadow.withValues(alpha: 0.1),
blurRadius: 10,
offset: const Offset(0, 4),
),
],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
quiz['title'] ?? 'Quiz sem título',
style: TextStyle(
color: cs.onSurface,
fontSize: 16,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 4),
if (_userRole == 'student' && quiz['score'] != null) ...[
Text(
'Pontuação: ${quiz['score']}/${quiz['totalQuestions'] ?? '?'}',
style: TextStyle(
color: cs.primary,
fontSize: 14,
fontWeight: FontWeight.w500,
),
),
],
Text(
_userRole == 'teacher' || quiz['type'] == 'created'
? 'Criado em: ${_formatDate(quiz['createdAt'])}'
: 'Completado em: ${_formatDate(quiz['completedAt'])}',
style: TextStyle(
color: cs.onSurfaceVariant,
fontSize: 12,
),
),
],
),
),
IconButton(
onPressed: () => _deleteQuiz(
quiz['id'],
quiz['title'] ?? 'Quiz',
quiz['type'] ?? 'unknown',
),
icon: Icon(Icons.delete_outline, color: Colors.red),
tooltip: _userRole == 'teacher' ? 'Eliminar Quiz' : 'Remover',
),
],
),
if (_userRole == 'teacher' &&
quiz['classIds'] != null &&
_selectedDisciplineId == null) ...[
const SizedBox(height: 8),
Wrap(
spacing: 4,
children: (quiz['classIds'] as List<dynamic>).map((classId) {
return Container(
padding: const EdgeInsets.symmetric(
horizontal: 8,
vertical: 4,
),
decoration: BoxDecoration(
color: cs.primaryContainer,
borderRadius: BorderRadius.circular(8),
),
child: Text(
'Disciplina: $classId',
style: TextStyle(
color: cs.onPrimaryContainer,
fontSize: 10,
),
),
);
}).toList(),
),
],
],
),
);
}
String _formatDate(dynamic date) {
if (date == null) return 'Data desconhecida';
DateTime dateTime;
if (date is Timestamp) {
dateTime = date.toDate();
} else if (date is DateTime) {
dateTime = date;
} else {
return 'Data desconhecida';
}
return '${dateTime.day}/${dateTime.month}/${dateTime.year}';
}
}