582 lines
19 KiB
Dart
582 lines
19 KiB
Dart
import 'package:cloud_firestore/cloud_firestore.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:intl/intl.dart';
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class ClassStudentsInlineWidget extends StatefulWidget {
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final String classId;
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final String className;
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const ClassStudentsInlineWidget({
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super.key,
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required this.classId,
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required this.className,
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});
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@override
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State<ClassStudentsInlineWidget> createState() =>
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_ClassStudentsInlineWidgetState();
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}
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class _ClassStudentsInlineWidgetState extends State<ClassStudentsInlineWidget> {
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final _searchController = TextEditingController();
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String _searchQuery = '';
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String? _classCode;
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late Stream<QuerySnapshot> _enrollmentsStream;
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@override
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void initState() {
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super.initState();
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_loadClassCode();
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_initStream();
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}
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@override
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void didUpdateWidget(ClassStudentsInlineWidget oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.classId != widget.classId) {
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_loadClassCode();
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_initStream();
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}
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}
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@override
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void dispose() {
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_searchController.dispose();
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super.dispose();
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}
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void _initStream() {
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_enrollmentsStream = FirebaseFirestore.instance
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.collection('enrollments')
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.where('classId', isEqualTo: widget.classId)
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.snapshots();
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}
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Future<void> _loadClassCode() async {
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final doc = await FirebaseFirestore.instance
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.collection('classes')
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.doc(widget.classId)
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.get();
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if (mounted) {
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setState(() => _classCode = doc.data()?['code'] as String? ?? '—');
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}
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}
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Future<void> _confirmRemove(
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String enrollmentDocId,
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String studentName,
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) async {
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final cs = Theme.of(context).colorScheme;
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (ctx) => AlertDialog(
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shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
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title: const Text('Remover aluno'),
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content: Text(
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'Tens a certeza que queres remover "$studentName" desta turma?',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(ctx).pop(false),
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child: const Text('Cancelar'),
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),
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FilledButton(
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style: FilledButton.styleFrom(backgroundColor: cs.error),
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onPressed: () => Navigator.of(ctx).pop(true),
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child: const Text('Remover'),
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),
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],
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),
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);
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if (confirmed != true) return;
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await _deleteEnrollment(enrollmentDocId, studentName);
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}
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Future<void> _deleteEnrollment(
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String enrollmentDocId,
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String studentName,
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) async {
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final cs = Theme.of(context).colorScheme;
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try {
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await FirebaseFirestore.instance
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.collection('enrollments')
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.doc(enrollmentDocId)
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.delete();
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if (!mounted) return;
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ScaffoldMessenger.of(context)
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..clearSnackBars()
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..showSnackBar(
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SnackBar(
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behavior: SnackBarBehavior.floating,
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margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
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backgroundColor: cs.primary,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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content: Text(
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'"$studentName" foi removido da turma.',
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style: const TextStyle(color: Colors.white),
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),
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),
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);
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} catch (e) {
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if (!mounted) return;
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ScaffoldMessenger.of(
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context,
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).showSnackBar(SnackBar(content: Text('Erro ao remover: $e')));
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}
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}
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// ── Build ──────────────────────────────────────────────────────────────────
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@override
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Widget build(BuildContext context) {
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final cs = Theme.of(context).colorScheme;
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return StreamBuilder<QuerySnapshot>(
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stream: _enrollmentsStream,
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builder: (context, snapshot) {
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final docs = snapshot.data?.docs ?? [];
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final enrollments = List<QueryDocumentSnapshot>.from(docs)
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..sort((a, b) {
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final aTs = (a.data() as Map)['joinedAt'] as Timestamp?;
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final bTs = (b.data() as Map)['joinedAt'] as Timestamp?;
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if (aTs == null && bTs == null) return 0;
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if (aTs == null) return 1;
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if (bTs == null) return -1;
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return aTs.compareTo(bTs);
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});
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final filtered = _searchQuery.isEmpty
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? enrollments
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: enrollments.where((doc) {
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final d = doc.data() as Map<String, dynamic>;
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final name = (d['studentName'] as String? ?? '').toLowerCase();
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final email = (d['studentEmail'] as String? ?? '')
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.toLowerCase();
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return name.contains(_searchQuery) ||
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email.contains(_searchQuery);
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}).toList();
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final bottomInset = MediaQuery.of(context).viewInsets.bottom;
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return CustomScrollView(
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physics: const NeverScrollableScrollPhysics(),
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slivers: [
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SliverPadding(
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padding: const EdgeInsets.fromLTRB(20, 20, 20, 0),
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sliver: SliverToBoxAdapter(
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child: _buildHeader(cs, enrollments.length, snapshot),
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),
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),
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SliverPadding(
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padding: const EdgeInsets.fromLTRB(20, 14, 20, 0),
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sliver: SliverToBoxAdapter(child: _buildSearchBar()),
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),
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if (snapshot.connectionState == ConnectionState.waiting &&
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snapshot.data == null)
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const SliverFillRemaining(
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child: Center(
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child: CircularProgressIndicator(color: Colors.white),
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),
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)
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else if (filtered.isEmpty) ...[
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SliverFillRemaining(
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hasScrollBody: false,
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child: Padding(
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padding: EdgeInsets.only(bottom: bottomInset),
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child: _buildEmpty(cs),
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),
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),
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] else
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SliverPadding(
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padding: EdgeInsets.fromLTRB(20, 14, 20, 20 + bottomInset),
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sliver: SliverList(
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delegate: SliverChildBuilderDelegate((context, index) {
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final doc = filtered[index];
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final data = doc.data() as Map<String, dynamic>;
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return Padding(
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padding: const EdgeInsets.only(bottom: 10),
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child: _buildStudentCard(
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cs: cs,
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enrollmentDocId: doc.id,
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studentName:
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data['studentName'] as String? ?? 'Aluno sem nome',
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studentEmail: data['studentEmail'] as String? ?? '',
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joinedAt: data['joinedAt'] as Timestamp?,
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),
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);
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}, childCount: filtered.length),
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),
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),
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],
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);
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},
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);
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}
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// ── Sub-widgets ────────────────────────────────────────────────────────────
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Widget _buildHeader(
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ColorScheme cs,
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int count,
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AsyncSnapshot<QuerySnapshot> snapshot,
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) {
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return Container(
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padding: const EdgeInsets.all(18),
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decoration: BoxDecoration(
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gradient: LinearGradient(
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colors: [cs.primary, cs.primary.withValues(alpha: 0.8)],
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),
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borderRadius: BorderRadius.circular(16),
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),
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child: Row(
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children: [
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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widget.className,
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style: const TextStyle(
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color: Colors.white,
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fontSize: 18,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 4),
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Text(
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snapshot.connectionState == ConnectionState.waiting &&
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snapshot.data == null
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? 'A carregar…'
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: '$count aluno${count == 1 ? '' : 's'} inscrito${count == 1 ? '' : 's'}',
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.85),
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fontSize: 13,
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),
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),
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],
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),
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),
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_buildCodeBadge(cs),
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],
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),
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);
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}
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Widget _buildCodeBadge(ColorScheme cs) {
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return GestureDetector(
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onTap: () {
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if (_classCode == null || _classCode == '—') return;
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Clipboard.setData(ClipboardData(text: _classCode!));
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ScaffoldMessenger.of(context)
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..clearSnackBars()
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..showSnackBar(
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SnackBar(
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behavior: SnackBarBehavior.floating,
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margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
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backgroundColor: cs.primary,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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duration: const Duration(seconds: 2),
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content: const Text(
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'Código copiado!',
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style: TextStyle(color: Colors.white),
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),
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),
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);
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},
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
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decoration: BoxDecoration(
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color: Colors.white.withValues(alpha: 0.18),
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borderRadius: BorderRadius.circular(12),
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border: Border.all(color: Colors.white.withValues(alpha: 0.3)),
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),
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child: Column(
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children: [
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const Text(
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'Código',
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style: TextStyle(
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color: Colors.white70,
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fontSize: 10,
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fontWeight: FontWeight.w500,
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),
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),
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const SizedBox(height: 2),
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Text(
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_classCode ?? '…',
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style: const TextStyle(
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color: Colors.white,
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fontSize: 18,
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fontWeight: FontWeight.bold,
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letterSpacing: 2,
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),
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),
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const SizedBox(height: 2),
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Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(
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Icons.copy,
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color: Colors.white.withValues(alpha: 0.7),
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size: 10,
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),
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const SizedBox(width: 3),
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Text(
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'copiar',
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.7),
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fontSize: 9,
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),
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),
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],
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),
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],
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),
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),
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);
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}
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Widget _buildSearchBar() {
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return Container(
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padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
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decoration: BoxDecoration(
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color: Colors.white.withValues(alpha: 0.1),
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borderRadius: BorderRadius.circular(12),
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border: Border.all(color: Colors.white.withValues(alpha: 0.2)),
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),
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child: Row(
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children: [
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Icon(
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Icons.search,
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color: Colors.white.withValues(alpha: 0.7),
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size: 20,
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),
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const SizedBox(width: 10),
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Expanded(
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child: Theme(
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data: ThemeData.dark().copyWith(
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textSelectionTheme: const TextSelectionThemeData(
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cursorColor: Colors.white,
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selectionColor: Colors.white24,
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selectionHandleColor: Colors.white,
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),
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),
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child: TextField(
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controller: _searchController,
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onChanged: (v) =>
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setState(() => _searchQuery = v.trim().toLowerCase()),
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style: const TextStyle(color: Colors.white, fontSize: 14),
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cursorColor: Colors.white,
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decoration: InputDecoration(
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hintText: 'Pesquisar aluno…',
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hintStyle: TextStyle(
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color: Colors.white.withValues(alpha: 0.5),
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fontSize: 14,
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),
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border: InputBorder.none,
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isDense: true,
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contentPadding: EdgeInsets.zero,
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),
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),
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),
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),
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if (_searchQuery.isNotEmpty)
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GestureDetector(
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onTap: () {
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_searchController.clear();
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setState(() => _searchQuery = '');
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},
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child: Icon(
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Icons.close,
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color: Colors.white.withValues(alpha: 0.7),
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size: 18,
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),
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),
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],
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),
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);
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}
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Widget _buildStudentCard({
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required ColorScheme cs,
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required String enrollmentDocId,
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required String studentName,
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required String studentEmail,
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required Timestamp? joinedAt,
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}) {
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return Dismissible(
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key: Key(enrollmentDocId),
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direction: DismissDirection.endToStart,
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confirmDismiss: (_) async {
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (ctx) => AlertDialog(
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(16),
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),
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title: const Text('Remover aluno'),
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content: Text(
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'Tens a certeza que queres remover "$studentName" desta turma?',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(ctx).pop(false),
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child: const Text('Cancelar'),
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),
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FilledButton(
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style: FilledButton.styleFrom(backgroundColor: cs.error),
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onPressed: () => Navigator.of(ctx).pop(true),
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child: const Text('Remover'),
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),
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],
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),
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);
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return confirmed ?? false;
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},
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onDismissed: (_) => _deleteEnrollment(enrollmentDocId, studentName),
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background: Container(
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decoration: BoxDecoration(
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color: cs.error.withValues(alpha: 0.85),
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borderRadius: BorderRadius.circular(14),
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),
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alignment: Alignment.centerRight,
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padding: const EdgeInsets.only(right: 20),
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child: const Icon(Icons.delete_outline, color: Colors.white, size: 24),
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),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 12),
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decoration: BoxDecoration(
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color: Colors.white.withValues(alpha: 0.1),
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borderRadius: BorderRadius.circular(14),
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border: Border.all(color: Colors.white.withValues(alpha: 0.18)),
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),
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child: Row(
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children: [
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Container(
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width: 42,
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height: 42,
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decoration: BoxDecoration(
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color: Colors.white.withValues(alpha: 0.2),
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borderRadius: BorderRadius.circular(12),
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),
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child: Center(
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child: Text(
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studentName.isNotEmpty ? studentName[0].toUpperCase() : '?',
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style: const TextStyle(
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color: Colors.white,
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fontSize: 18,
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fontWeight: FontWeight.bold,
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),
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),
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),
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),
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const SizedBox(width: 14),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
|
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children: [
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Text(
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studentName,
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style: const TextStyle(
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color: Colors.white,
|
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fontSize: 14,
|
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fontWeight: FontWeight.w600,
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),
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),
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if (studentEmail.isNotEmpty) ...[
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const SizedBox(height: 2),
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Text(
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studentEmail,
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.65),
|
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fontSize: 12,
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),
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),
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],
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if (joinedAt != null) ...[
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const SizedBox(height: 2),
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|
Text(
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'Entrou em ${DateFormat('dd/MM/yyyy').format(joinedAt.toDate())}',
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.5),
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fontSize: 11,
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),
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),
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],
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],
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),
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),
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IconButton(
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icon: Icon(
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Icons.person_remove_outlined,
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color: cs.error.withValues(alpha: 0.85),
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size: 20,
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),
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tooltip: 'Remover aluno',
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onPressed: () => _confirmRemove(enrollmentDocId, studentName),
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),
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],
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),
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),
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);
|
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}
|
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|
|
Widget _buildEmpty(ColorScheme cs) {
|
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if (_searchQuery.isNotEmpty) {
|
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return Center(
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|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
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Icon(
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|
Icons.search_off,
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|
size: 48,
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color: Colors.white.withValues(alpha: 0.4),
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),
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const SizedBox(height: 12),
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|
Text(
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'Nenhum aluno encontrado',
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style: TextStyle(
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color: Colors.white.withValues(alpha: 0.7),
|
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fontSize: 16,
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),
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),
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],
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),
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);
|
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}
|
|
return Center(
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|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
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Icon(
|
|
Icons.people_outline,
|
|
size: 56,
|
|
color: Colors.white.withValues(alpha: 0.35),
|
|
),
|
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const SizedBox(height: 14),
|
|
Text(
|
|
'Nenhum aluno inscrito',
|
|
style: TextStyle(
|
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color: Colors.white.withValues(alpha: 0.7),
|
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fontSize: 16,
|
|
),
|
|
),
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const SizedBox(height: 6),
|
|
Text(
|
|
'Partilha o código da turma com os alunos.',
|
|
style: TextStyle(
|
|
color: Colors.white.withValues(alpha: 0.45),
|
|
fontSize: 13,
|
|
),
|
|
textAlign: TextAlign.center,
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|