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

lib/features/classes/presentation/pages/class_students_page.dart

@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import '../../../../core/services/auth_service.dart';
 
-/// Página para visualizar os alunos de uma disciplina específica
+/// Página para visualizar os alunos de uma turma específica
 class ClassStudentsPage extends StatefulWidget {
   final String classId;
   final String className;
@@ -97,7 +97,7 @@ class _ClassStudentsPageState extends State<ClassStudentsPage> {
                 ),
                 const SizedBox(height: 12),
                 Text(
-                  'Só podes ver os alunos das tuas próprias disciplinas.',
+                  'Só podes ver os alunos das tuas próprias turmas.',
                   style: TextStyle(color: cs.onSurfaceVariant, fontSize: 14),
                   textAlign: TextAlign.center,
                 ),
@@ -183,7 +183,7 @@ class _ClassStudentsPageState extends State<ClassStudentsPage> {
                     ),
                     const SizedBox(height: 24),
                     Text(
-                      'Nenhum aluno entrou nesta disciplina ainda.',
+                      'Nenhum aluno entrou nesta turma ainda.',
                       style: TextStyle(
                         color: cs.onSurfaceVariant,
                         fontSize: 16,
@@ -192,7 +192,7 @@ class _ClassStudentsPageState extends State<ClassStudentsPage> {
                     ),
                     const SizedBox(height: 8),
                     Text(
-                      'Partilha o código da disciplina para os alunos se juntarem.',
+                      'Partilha o código da turma para os alunos se juntarem.',
                       style: TextStyle(
                         color: cs.onSurfaceVariant.withValues(alpha: 0.7),
                         fontSize: 13,
@@ -215,6 +215,7 @@ class _ClassStudentsPageState extends State<ClassStudentsPage> {
               final studentName =
                   enrollment['studentName'] as String? ?? 'Aluno sem nome';
               final joinedAt = enrollment['joinedAt'] as Timestamp?;
+              final enrollmentId = enrollments[index].id;
 
               return Container(
                 decoration: BoxDecoration(
@@ -263,6 +264,15 @@ class _ClassStudentsPageState extends State<ClassStudentsPage> {
                       ),
                     ),
                   ),
+                  trailing: IconButton(
+                    icon: Icon(Icons.delete_outline, color: cs.error),
+                    onPressed: () => _showRemoveStudentDialog(
+                      context,
+                      enrollmentId,
+                      studentName,
+                    ),
+                    tooltip: 'Remover aluno',
+                  ),
                 ),
               );
             },
@@ -275,4 +285,82 @@ class _ClassStudentsPageState extends State<ClassStudentsPage> {
   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),
+            ),
+          );
+        }
+      }
+    }
+  }
 }