841 lines
26 KiB
Dart
841 lines
26 KiB
Dart
import 'dart:io';
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import 'package:cloud_firestore/cloud_firestore.dart';
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import 'package:file_selector/file_selector.dart';
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import 'package:firebase_auth/firebase_auth.dart';
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import 'package:firebase_storage/firebase_storage.dart';
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import 'package:flutter/material.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:intl/intl.dart';
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import 'package:path/path.dart' as path;
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import '../../../../core/services/auth_service.dart';
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/// Página de Materiais do Professor
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/// Tela dedicada para upload e gestão de materiais para a IA
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class TeacherMaterialsPage extends StatefulWidget {
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const TeacherMaterialsPage({super.key});
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@override
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State<TeacherMaterialsPage> createState() => _TeacherMaterialsPageState();
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}
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class _TeacherMaterialsPageState extends State<TeacherMaterialsPage> {
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final FirebaseFirestore _firestore = FirebaseFirestore.instance;
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final FirebaseStorage _storage = FirebaseStorage.instanceFor(
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bucket: 'teachit-app.firebasestorage.app',
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);
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final ImagePicker _imagePicker = ImagePicker();
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bool _isUploading = false;
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Stream<QuerySnapshot> _getMaterialsStream() {
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final currentUser = AuthService.currentUser;
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if (currentUser == null) {
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return const Stream.empty();
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}
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return _firestore
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.collection('materials')
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.where('teacherId', isEqualTo: currentUser.uid)
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.orderBy('createdAt', descending: true)
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.snapshots();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text(
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'Materiais da Disciplina',
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style: TextStyle(fontWeight: FontWeight.bold),
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),
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elevation: 0,
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),
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floatingActionButton: _isUploading
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? FloatingActionButton.extended(
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onPressed: null,
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backgroundColor: const Color(0xFFF68D2D).withOpacity(0.6),
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icon: const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: Colors.white,
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),
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),
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label: const Text(
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'A enviar...',
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style: TextStyle(color: Colors.white),
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),
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)
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: FloatingActionButton.extended(
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onPressed: _showUploadOptions,
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backgroundColor: const Color(0xFFF68D2D),
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icon: const Icon(Icons.add, color: Colors.white),
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label: const Text(
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'Adicionar',
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style: TextStyle(color: Colors.white),
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),
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),
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body: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: Theme.of(context).brightness == Brightness.dark
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? [
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Theme.of(context).colorScheme.primary.withOpacity(0.3),
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Theme.of(context).colorScheme.background,
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]
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: [const Color(0xFF82C9BD), const Color(0xFFF8F9FA)],
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stops: const [0.0, 0.4],
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),
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),
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child: SafeArea(
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child: StreamBuilder<QuerySnapshot>(
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stream: _getMaterialsStream(),
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builder: (context, snapshot) {
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if (snapshot.connectionState == ConnectionState.waiting) {
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return const Center(
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child: CircularProgressIndicator(color: Color(0xFF82C9BD)),
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);
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}
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if (snapshot.hasError) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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const Icon(
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Icons.error_outline,
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color: Colors.red,
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size: 48,
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),
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const SizedBox(height: 16),
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Text(
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'Erro ao carregar materiais:\n${snapshot.error}',
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textAlign: TextAlign.center,
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurface,
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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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}
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final materials = snapshot.data?.docs ?? [];
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if (materials.isEmpty) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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Icons.folder_open,
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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size: 64,
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),
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const SizedBox(height: 16),
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Text(
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'Nenhum material enviado ainda.',
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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fontSize: 16,
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),
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),
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const SizedBox(height: 8),
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Text(
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'Os materiais enviados aparecerão aqui.',
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style: TextStyle(
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color: Theme.of(context).colorScheme.onSurfaceVariant,
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fontSize: 14,
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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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return ListView.builder(
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padding: const EdgeInsets.all(16),
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itemCount: materials.length,
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itemBuilder: (context, index) {
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final material =
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materials[index].data() as Map<String, dynamic>;
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final fileName = material['fileName'] ?? 'Ficheiro sem nome';
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final createdAt = material['createdAt'] as Timestamp?;
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// Inferir tipo pela extensão do filename
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final extension = path.extension(fileName).toLowerCase();
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final fileType = extension == '.pdf'
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? 'pdf'
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: (extension == '.jpg' ||
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extension == '.jpeg' ||
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extension == '.png')
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? 'image'
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: 'other';
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final docId = materials[index].id;
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final url = material['url'] as String?;
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final classId = material['classId'] as String?;
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return _buildMaterialCard(
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docId: docId,
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fileName: fileName,
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fileType: fileType,
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createdAt: createdAt,
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url: url,
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classId: classId,
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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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void _showUploadOptions() {
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final cs = Theme.of(context).colorScheme;
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showModalBottomSheet(
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context: context,
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backgroundColor: Colors.transparent,
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builder: (context) => Container(
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decoration: BoxDecoration(
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color: cs.surface,
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borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
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),
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child: SafeArea(
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child: Padding(
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padding: const EdgeInsets.all(20),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Center(
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child: Container(
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width: 40,
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height: 4,
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decoration: BoxDecoration(
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color: cs.onSurface.withOpacity(0.2),
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borderRadius: BorderRadius.circular(2),
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),
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),
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),
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const SizedBox(height: 20),
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Text(
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'Adicionar Material',
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style: TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.bold,
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color: Theme.of(context).colorScheme.onSurface,
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),
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),
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const SizedBox(height: 20),
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_buildUploadOption(
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icon: Icons.picture_as_pdf,
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color: Colors.red,
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title: 'PDF',
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subtitle: 'Selecionar ficheiro PDF',
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onTap: () {
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Navigator.pop(context);
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_selectPDF();
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},
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),
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const SizedBox(height: 12),
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_buildUploadOption(
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icon: Icons.image,
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color: Colors.blue,
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title: 'Imagem da Galeria',
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subtitle: 'Escolher foto existente',
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onTap: () {
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Navigator.pop(context);
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_selectImageFromGallery();
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},
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),
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const SizedBox(height: 12),
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_buildUploadOption(
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icon: Icons.camera_alt,
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color: const Color(0xFF82C9BD),
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title: 'Foto da Câmara',
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subtitle: 'Tirar foto nova',
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onTap: () {
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Navigator.pop(context);
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_takePhotoWithCamera();
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},
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),
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const SizedBox(height: 20),
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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 _buildUploadOption({
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required IconData icon,
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required Color color,
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required String title,
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required String subtitle,
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required VoidCallback onTap,
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}) {
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return InkWell(
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onTap: onTap,
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borderRadius: BorderRadius.circular(12),
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child: Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: color.withOpacity(0.05),
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borderRadius: BorderRadius.circular(12),
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border: Border.all(color: color.withOpacity(0.2), width: 1),
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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: 48,
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height: 48,
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decoration: BoxDecoration(
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color: color.withOpacity(0.1),
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borderRadius: BorderRadius.circular(12),
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),
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child: Icon(icon, color: color, size: 24),
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),
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const SizedBox(width: 16),
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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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title,
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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color: Theme.of(context).colorScheme.onSurface,
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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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subtitle,
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style: TextStyle(fontSize: 13, color: Colors.grey[600]),
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),
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],
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),
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),
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Icon(Icons.arrow_forward_ios, color: Colors.grey[400], size: 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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Future<void> _selectPDF() async {
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try {
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const XTypeGroup pdfTypeGroup = XTypeGroup(
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label: 'PDFs',
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extensions: ['pdf'],
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uniformTypeIdentifiers: ['com.adobe.pdf'],
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);
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final XFile? file = await openFile(acceptedTypeGroups: [pdfTypeGroup]);
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if (file == null) return;
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await _pickClassAndUpload(
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filePath: file.path,
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fileName: path.basename(file.path),
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fileType: 'pdf',
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);
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} catch (e) {
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if (mounted) {
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_showErrorSnackBar('Erro ao selecionar PDF: $e');
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}
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}
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}
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Future<void> _selectImageFromGallery() async {
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try {
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final XFile? image = await _imagePicker.pickImage(
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source: ImageSource.gallery,
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maxWidth: 1920,
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maxHeight: 1080,
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imageQuality: 85,
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);
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if (image == null) return;
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await _pickClassAndUpload(
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filePath: image.path,
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fileName: path.basename(image.path),
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fileType: 'image',
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);
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} catch (e) {
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if (mounted) {
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_showErrorSnackBar('Erro ao selecionar imagem: $e');
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}
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}
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}
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Future<void> _takePhotoWithCamera() async {
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try {
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final XFile? photo = await _imagePicker.pickImage(
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source: ImageSource.camera,
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maxWidth: 1920,
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maxHeight: 1080,
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imageQuality: 85,
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);
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if (photo == null) return;
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await _pickClassAndUpload(
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filePath: photo.path,
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fileName: path.basename(photo.path),
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fileType: 'image',
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);
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} catch (e) {
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if (mounted) {
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_showErrorSnackBar('Erro ao tirar foto: $e');
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}
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}
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}
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Future<void> _pickClassAndUpload({
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required String filePath,
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required String fileName,
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required String fileType,
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}) async {
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final currentUser = AuthService.currentUser;
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if (currentUser == null) {
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_showErrorSnackBar('Utilizador não autenticado');
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return;
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}
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// Carregar as disciplinas do professor
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List<Map<String, String>> teacherClasses = [];
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try {
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final snapshot = await _firestore
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.collection('classes')
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.where('teacherId', isEqualTo: currentUser.uid)
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.orderBy('createdAt', descending: true)
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.get();
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teacherClasses = snapshot.docs.map((doc) {
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final data = doc.data();
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return {'id': doc.id, 'name': (data['name'] as String? ?? doc.id)};
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}).toList();
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} catch (_) {}
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if (!mounted) return;
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// Se o professor não tem disciplinas, fazer upload sem associar disciplina
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if (teacherClasses.isEmpty) {
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await _uploadFile(
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filePath: filePath,
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fileName: fileName,
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fileType: fileType,
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);
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return;
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}
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// Mostrar diálogo de seleção de disciplina
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String? selectedClassId = await showDialog<String>(
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context: context,
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builder: (dialogContext) {
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String? picked;
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return StatefulBuilder(
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builder: (context, setDialogState) => 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(
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'Escolher Disciplina',
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style: TextStyle(fontWeight: FontWeight.bold),
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),
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content: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text(
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'Seleciona a disciplina que terá acesso a este material:',
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style: TextStyle(fontSize: 14),
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),
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const SizedBox(height: 16),
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DropdownButtonFormField<String>(
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value: picked,
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isExpanded: true,
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decoration: InputDecoration(
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filled: true,
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fillColor: Theme.of(
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context,
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).colorScheme.surfaceContainerHighest,
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide.none,
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(
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color: Theme.of(context).colorScheme.primary,
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width: 2,
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),
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),
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contentPadding: const EdgeInsets.symmetric(
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horizontal: 12,
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vertical: 10,
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),
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),
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hint: const Text('Seleciona a disciplina'),
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items: teacherClasses
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.map(
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(c) => DropdownMenuItem<String>(
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value: c['id'],
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child: Text(c['name']!),
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),
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)
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.toList(),
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onChanged: (value) => setDialogState(() => picked = value),
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),
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],
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(dialogContext).pop(null),
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child: const Text('Cancelar'),
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),
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ElevatedButton(
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onPressed: picked == null
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? null
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: () => Navigator.of(dialogContext).pop(picked),
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style: ElevatedButton.styleFrom(
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backgroundColor: const Color(0xFFF68D2D),
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foregroundColor: Colors.white,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(10),
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),
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),
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child: const Text('Confirmar'),
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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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// Se cancelou o diálogo, não fazer upload
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if (selectedClassId == null) return;
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await _uploadFile(
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filePath: filePath,
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fileName: fileName,
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fileType: fileType,
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classId: selectedClassId,
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);
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}
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Future<void> _uploadFile({
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required String filePath,
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required String fileName,
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required String fileType,
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String? classId,
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}) async {
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final currentUser = FirebaseAuth.instance.currentUser;
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if (currentUser == null) {
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_showErrorSnackBar('Utilizador não autenticado');
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return;
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}
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final uid = currentUser.uid;
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final cleanFileName = path.basename(fileName);
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setState(() => _isUploading = true);
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try {
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// Upload para Firebase Storage: teachers/{uid}/materials/{fileName}
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final storage = FirebaseStorage.instanceFor(
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bucket: 'teachit-app.firebasestorage.app',
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);
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final ref = storage
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.ref()
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.child('teachers')
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.child(uid)
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.child('materials')
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.child(cleanFileName);
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await ref.putFile(File(filePath));
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final downloadUrl = await ref.getDownloadURL();
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// Criar documento no Firestore
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final materialData = <String, dynamic>{
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'teacherId': uid,
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'fileName': cleanFileName,
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'url': downloadUrl,
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'createdAt': FieldValue.serverTimestamp(),
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};
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if (classId != null && classId.isNotEmpty) {
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materialData['classId'] = classId;
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}
|
|
await FirebaseFirestore.instance
|
|
.collection('materials')
|
|
.add(materialData);
|
|
|
|
if (mounted) {
|
|
_showSuccessSnackBar('Material enviado com sucesso!');
|
|
}
|
|
} catch (e) {
|
|
if (mounted) {
|
|
_showErrorSnackBar('Erro ao enviar material: $e');
|
|
}
|
|
} finally {
|
|
if (mounted) {
|
|
setState(() => _isUploading = false);
|
|
}
|
|
}
|
|
}
|
|
|
|
Future<void> _deleteMaterial({
|
|
required String docId,
|
|
required String fileName,
|
|
String? url,
|
|
}) async {
|
|
try {
|
|
// Apagar ficheiro do Firebase Storage
|
|
if (url != null && url.isNotEmpty) {
|
|
try {
|
|
final ref = _storage.refFromURL(url);
|
|
await ref.delete();
|
|
} catch (_) {
|
|
// Se o ficheiro já não existir no Storage, continuar na mesma
|
|
}
|
|
}
|
|
|
|
// Apagar documento no Firestore
|
|
await _firestore.collection('materials').doc(docId).delete();
|
|
|
|
if (mounted) {
|
|
_showSuccessSnackBar('Material eliminado com sucesso!');
|
|
}
|
|
} catch (e) {
|
|
if (mounted) {
|
|
_showErrorSnackBar('Erro ao eliminar material: $e');
|
|
}
|
|
}
|
|
}
|
|
|
|
void _showDeleteConfirmation({
|
|
required String docId,
|
|
required String fileName,
|
|
String? url,
|
|
}) {
|
|
showDialog(
|
|
context: context,
|
|
builder: (dialogContext) => AlertDialog(
|
|
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
|
|
title: const Text(
|
|
'Eliminar Material',
|
|
style: TextStyle(fontWeight: FontWeight.bold),
|
|
),
|
|
content: Text(
|
|
'Tens a certeza que queres eliminar "$fileName"?\nEsta ação não pode ser desfeita.',
|
|
),
|
|
actions: [
|
|
TextButton(
|
|
onPressed: () => Navigator.of(dialogContext).pop(),
|
|
child: const Text('Cancelar'),
|
|
),
|
|
ElevatedButton(
|
|
onPressed: () {
|
|
Navigator.of(dialogContext).pop();
|
|
_deleteMaterial(docId: docId, fileName: fileName, url: url);
|
|
},
|
|
style: ElevatedButton.styleFrom(
|
|
backgroundColor: Colors.red,
|
|
foregroundColor: Colors.white,
|
|
shape: RoundedRectangleBorder(
|
|
borderRadius: BorderRadius.circular(10),
|
|
),
|
|
),
|
|
child: const Text('Eliminar'),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
void _showSuccessSnackBar(String message) {
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
SnackBar(
|
|
content: Row(
|
|
children: [
|
|
const Icon(Icons.check_circle, color: Colors.white),
|
|
const SizedBox(width: 12),
|
|
Expanded(child: Text(message)),
|
|
],
|
|
),
|
|
backgroundColor: const Color(0xFF10B981),
|
|
behavior: SnackBarBehavior.floating,
|
|
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
|
|
duration: const Duration(seconds: 2),
|
|
),
|
|
);
|
|
}
|
|
|
|
void _showErrorSnackBar(String message) {
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
SnackBar(
|
|
content: Row(
|
|
children: [
|
|
const Icon(Icons.error_outline, color: Colors.white),
|
|
const SizedBox(width: 12),
|
|
Expanded(child: Text(message)),
|
|
],
|
|
),
|
|
backgroundColor: Colors.red,
|
|
behavior: SnackBarBehavior.floating,
|
|
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
|
|
duration: const Duration(seconds: 3),
|
|
),
|
|
);
|
|
}
|
|
|
|
Future<String?> _getClassName(String classId) async {
|
|
try {
|
|
final doc = await _firestore.collection('classes').doc(classId).get();
|
|
if (doc.exists) {
|
|
return doc.data()?['name'] as String?;
|
|
}
|
|
return null;
|
|
} catch (_) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
Widget _buildMaterialCard({
|
|
required String docId,
|
|
required String fileName,
|
|
required String fileType,
|
|
required Timestamp? createdAt,
|
|
String? url,
|
|
String? classId,
|
|
}) {
|
|
IconData iconData;
|
|
Color iconColor;
|
|
|
|
switch (fileType.toLowerCase()) {
|
|
case 'pdf':
|
|
iconData = Icons.picture_as_pdf;
|
|
iconColor = Colors.red;
|
|
break;
|
|
case 'image':
|
|
case 'jpg':
|
|
case 'jpeg':
|
|
case 'png':
|
|
iconData = Icons.image;
|
|
iconColor = Colors.blue;
|
|
break;
|
|
default:
|
|
iconData = Icons.insert_drive_file;
|
|
iconColor = const Color(0xFF82C9BD);
|
|
}
|
|
|
|
String formattedDate = 'Data desconhecida';
|
|
if (createdAt != null) {
|
|
formattedDate = DateFormat('dd/MM/yyyy HH:mm').format(createdAt.toDate());
|
|
}
|
|
|
|
return Card(
|
|
margin: const EdgeInsets.only(bottom: 12),
|
|
elevation: 2,
|
|
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
|
|
child: ListTile(
|
|
contentPadding: const EdgeInsets.symmetric(
|
|
horizontal: 16,
|
|
vertical: 12,
|
|
),
|
|
leading: Container(
|
|
width: 48,
|
|
height: 48,
|
|
decoration: BoxDecoration(
|
|
color: iconColor.withOpacity(0.1),
|
|
borderRadius: BorderRadius.circular(10),
|
|
),
|
|
child: Icon(iconData, color: iconColor, size: 28),
|
|
),
|
|
title: Text(
|
|
fileName,
|
|
style: TextStyle(
|
|
fontWeight: FontWeight.w600,
|
|
fontSize: 16,
|
|
color: Theme.of(context).colorScheme.onSurface,
|
|
),
|
|
maxLines: 2,
|
|
overflow: TextOverflow.ellipsis,
|
|
),
|
|
subtitle: classId != null
|
|
? FutureBuilder<String?>(
|
|
future: _getClassName(classId),
|
|
builder: (context, snap) {
|
|
final className = snap.data;
|
|
return Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
Text(
|
|
formattedDate,
|
|
style: TextStyle(
|
|
color: Theme.of(context).colorScheme.onSurfaceVariant,
|
|
fontSize: 13,
|
|
),
|
|
),
|
|
if (className != null) ...[
|
|
const SizedBox(height: 2),
|
|
Row(
|
|
children: [
|
|
Icon(
|
|
Icons.school_outlined,
|
|
size: 12,
|
|
color: Theme.of(context).colorScheme.primary,
|
|
),
|
|
const SizedBox(width: 4),
|
|
Flexible(
|
|
child: Text(
|
|
className,
|
|
style: TextStyle(
|
|
color: Theme.of(context).colorScheme.primary,
|
|
fontSize: 12,
|
|
fontWeight: FontWeight.w500,
|
|
),
|
|
maxLines: 2,
|
|
overflow: TextOverflow.ellipsis,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
],
|
|
],
|
|
);
|
|
},
|
|
)
|
|
: Text(
|
|
formattedDate,
|
|
style: TextStyle(
|
|
color: Theme.of(context).colorScheme.onSurfaceVariant,
|
|
fontSize: 13,
|
|
),
|
|
),
|
|
trailing: IconButton(
|
|
icon: const Icon(Icons.delete_outline, color: Colors.red),
|
|
tooltip: 'Eliminar',
|
|
onPressed: () => _showDeleteConfirmation(
|
|
docId: docId,
|
|
fileName: fileName,
|
|
url: url,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|