367 lines
11 KiB
Dart
367 lines
11 KiB
Dart
import 'package:cloud_firestore/cloud_firestore.dart';
|
|
import 'package:flutter/material.dart';
|
|
import 'package:intl/intl.dart';
|
|
import '../../../../core/services/auth_service.dart';
|
|
|
|
/// Página para visualizar os alunos de uma turma específica
|
|
class ClassStudentsPage extends StatefulWidget {
|
|
final String classId;
|
|
final String className;
|
|
|
|
const ClassStudentsPage({
|
|
super.key,
|
|
required this.classId,
|
|
required this.className,
|
|
});
|
|
|
|
@override
|
|
State<ClassStudentsPage> createState() => _ClassStudentsPageState();
|
|
}
|
|
|
|
class _ClassStudentsPageState extends State<ClassStudentsPage> {
|
|
bool _isCheckingAccess = true;
|
|
bool _accessGranted = false;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
_verifyOwnership();
|
|
}
|
|
|
|
Future<void> _verifyOwnership() async {
|
|
final currentUser = AuthService.currentUser;
|
|
if (currentUser == null) {
|
|
setState(() {
|
|
_isCheckingAccess = false;
|
|
_accessGranted = false;
|
|
});
|
|
return;
|
|
}
|
|
|
|
final role = await AuthService.getUserRole(currentUser.uid);
|
|
if (role != 'teacher') {
|
|
setState(() {
|
|
_isCheckingAccess = false;
|
|
_accessGranted = false;
|
|
});
|
|
return;
|
|
}
|
|
|
|
final classDoc = await FirebaseFirestore.instance
|
|
.collection('classes')
|
|
.doc(widget.classId)
|
|
.get();
|
|
|
|
final teacherId = classDoc.data()?['teacherId'] as String?;
|
|
setState(() {
|
|
_isCheckingAccess = false;
|
|
_accessGranted = classDoc.exists && teacherId == currentUser.uid;
|
|
});
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final cs = Theme.of(context).colorScheme;
|
|
|
|
if (_isCheckingAccess) {
|
|
return Scaffold(
|
|
backgroundColor: cs.surface,
|
|
body: Center(child: CircularProgressIndicator(color: cs.primary)),
|
|
);
|
|
}
|
|
|
|
if (!_accessGranted) {
|
|
return Scaffold(
|
|
backgroundColor: cs.surface,
|
|
appBar: AppBar(
|
|
backgroundColor: cs.surface,
|
|
foregroundColor: cs.onSurface,
|
|
elevation: 0,
|
|
title: const Text('Acesso Negado'),
|
|
),
|
|
body: Center(
|
|
child: Padding(
|
|
padding: const EdgeInsets.all(32.0),
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(Icons.lock_outline, size: 64, color: cs.primary),
|
|
const SizedBox(height: 24),
|
|
Text(
|
|
'Sem permissão',
|
|
style: TextStyle(
|
|
color: cs.onSurface,
|
|
fontSize: 20,
|
|
fontWeight: FontWeight.bold,
|
|
),
|
|
),
|
|
const SizedBox(height: 12),
|
|
Text(
|
|
'Só podes ver os alunos das tuas próprias turmas.',
|
|
style: TextStyle(color: cs.onSurfaceVariant, fontSize: 14),
|
|
textAlign: TextAlign.center,
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
return Scaffold(
|
|
backgroundColor: cs.surface,
|
|
appBar: AppBar(
|
|
backgroundColor: cs.surface,
|
|
foregroundColor: cs.onSurface,
|
|
elevation: 0,
|
|
title: Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
Text(
|
|
widget.className,
|
|
style: TextStyle(
|
|
color: cs.onSurface,
|
|
fontSize: 18,
|
|
fontWeight: FontWeight.bold,
|
|
),
|
|
),
|
|
Text(
|
|
'Alunos Matriculados',
|
|
style: TextStyle(
|
|
color: cs.onSurfaceVariant,
|
|
fontSize: 13,
|
|
fontWeight: FontWeight.w400,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
body: StreamBuilder<QuerySnapshot>(
|
|
stream: FirebaseFirestore.instance
|
|
.collection('enrollments')
|
|
.where('classId', isEqualTo: widget.classId)
|
|
.orderBy('joinedAt', descending: true)
|
|
.snapshots(),
|
|
builder: (context, snapshot) {
|
|
if (snapshot.connectionState == ConnectionState.waiting) {
|
|
return Center(child: CircularProgressIndicator(color: cs.primary));
|
|
}
|
|
|
|
if (snapshot.hasError) {
|
|
return Center(
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(
|
|
Icons.error_outline,
|
|
size: 48,
|
|
color: cs.onSurfaceVariant,
|
|
),
|
|
const SizedBox(height: 16),
|
|
Text(
|
|
'Erro ao carregar alunos',
|
|
style: TextStyle(color: cs.onSurfaceVariant, fontSize: 16),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
final enrollments = snapshot.data?.docs ?? [];
|
|
|
|
if (enrollments.isEmpty) {
|
|
return Center(
|
|
child: Padding(
|
|
padding: const EdgeInsets.all(32),
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(
|
|
Icons.people_outline,
|
|
size: 64,
|
|
color: cs.onSurfaceVariant.withValues(alpha: 0.4),
|
|
),
|
|
const SizedBox(height: 24),
|
|
Text(
|
|
'Nenhum aluno entrou nesta turma ainda.',
|
|
style: TextStyle(
|
|
color: cs.onSurfaceVariant,
|
|
fontSize: 16,
|
|
),
|
|
textAlign: TextAlign.center,
|
|
),
|
|
const SizedBox(height: 8),
|
|
Text(
|
|
'Partilha o código da turma para os alunos se juntarem.',
|
|
style: TextStyle(
|
|
color: cs.onSurfaceVariant.withValues(alpha: 0.7),
|
|
fontSize: 13,
|
|
),
|
|
textAlign: TextAlign.center,
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
return ListView.separated(
|
|
padding: const EdgeInsets.all(16),
|
|
itemCount: enrollments.length,
|
|
separatorBuilder: (_, __) => const SizedBox(height: 12),
|
|
itemBuilder: (context, index) {
|
|
final enrollment =
|
|
enrollments[index].data() as Map<String, dynamic>;
|
|
final studentName =
|
|
enrollment['studentName'] as String? ?? 'Aluno sem nome';
|
|
final joinedAt = enrollment['joinedAt'] as Timestamp?;
|
|
final enrollmentId = enrollments[index].id;
|
|
|
|
return Container(
|
|
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: ListTile(
|
|
contentPadding: const EdgeInsets.symmetric(
|
|
horizontal: 16,
|
|
vertical: 8,
|
|
),
|
|
leading: Container(
|
|
width: 48,
|
|
height: 48,
|
|
decoration: BoxDecoration(
|
|
color: cs.primary.withValues(alpha: 0.1),
|
|
borderRadius: BorderRadius.circular(12),
|
|
),
|
|
child: Icon(Icons.person, color: cs.primary, size: 24),
|
|
),
|
|
title: Text(
|
|
studentName,
|
|
style: TextStyle(
|
|
color: cs.onSurface,
|
|
fontSize: 15,
|
|
fontWeight: FontWeight.w600,
|
|
),
|
|
),
|
|
subtitle: Padding(
|
|
padding: const EdgeInsets.only(top: 4),
|
|
child: Text(
|
|
joinedAt != null
|
|
? 'Entrou em ${_formatDate(joinedAt.toDate())}'
|
|
: 'Data desconhecida',
|
|
style: TextStyle(
|
|
color: cs.onSurfaceVariant,
|
|
fontSize: 13,
|
|
),
|
|
),
|
|
),
|
|
trailing: IconButton(
|
|
icon: Icon(Icons.delete_outline, color: cs.error),
|
|
onPressed: () => _showRemoveStudentDialog(
|
|
context,
|
|
enrollmentId,
|
|
studentName,
|
|
),
|
|
tooltip: 'Remover aluno',
|
|
),
|
|
),
|
|
);
|
|
},
|
|
);
|
|
},
|
|
),
|
|
);
|
|
}
|
|
|
|
String _formatDate(DateTime date) {
|
|
return DateFormat('dd/MM/yyyy').format(date);
|
|
}
|
|
|
|
Future<void> _showRemoveStudentDialog(
|
|
BuildContext context,
|
|
String enrollmentId,
|
|
String studentName,
|
|
) async {
|
|
final confirmed = await showDialog<bool>(
|
|
context: context,
|
|
builder: (context) => AlertDialog(
|
|
title: const Text('Remover Aluno'),
|
|
content: Text(
|
|
'Tem a certeza que deseja remover $studentName desta turma?',
|
|
),
|
|
actions: [
|
|
TextButton(
|
|
onPressed: () => Navigator.of(context).pop(false),
|
|
child: const Text('Cancelar'),
|
|
),
|
|
TextButton(
|
|
onPressed: () => Navigator.of(context).pop(true),
|
|
style: TextButton.styleFrom(
|
|
foregroundColor: Theme.of(context).colorScheme.error,
|
|
),
|
|
child: const Text('Remover'),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
|
|
if (confirmed == true && context.mounted) {
|
|
try {
|
|
await FirebaseFirestore.instance
|
|
.collection('enrollments')
|
|
.doc(enrollmentId)
|
|
.delete();
|
|
|
|
if (context.mounted) {
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
SnackBar(
|
|
content: Row(
|
|
children: [
|
|
Icon(Icons.check_circle, color: Colors.white),
|
|
const SizedBox(width: 12),
|
|
const Text('Aluno removido com sucesso'),
|
|
],
|
|
),
|
|
backgroundColor: Colors.green,
|
|
behavior: SnackBarBehavior.floating,
|
|
shape: RoundedRectangleBorder(
|
|
borderRadius: BorderRadius.circular(10),
|
|
),
|
|
duration: const Duration(seconds: 3),
|
|
),
|
|
);
|
|
}
|
|
} catch (e) {
|
|
if (context.mounted) {
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
SnackBar(
|
|
content: Row(
|
|
children: [
|
|
Icon(Icons.error_outline, color: Colors.white),
|
|
const SizedBox(width: 12),
|
|
Text('Erro ao remover aluno: $e'),
|
|
],
|
|
),
|
|
backgroundColor: Colors.red,
|
|
behavior: SnackBarBehavior.floating,
|
|
shape: RoundedRectangleBorder(
|
|
borderRadius: BorderRadius.circular(10),
|
|
),
|
|
duration: const Duration(seconds: 4),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|