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Tudo a funcionar, apenas falta a base de dados

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240405
2026-03-16 20:10:36 +00:00
parent 7ca6cc23ca
commit c5db0717c5
3 changed files with 60 additions and 31 deletions
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64
lib/chat_screen.dart
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@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
import 'dart:convert'; import 'dart:convert';
import 'package:http/http.dart' as http; import 'package:http/http.dart' as http;
import 'dart:async'; import 'dart:async';
import 'package:flutter_markdown/flutter_markdown.dart';
class ChatScreen extends StatefulWidget { class ChatScreen extends StatefulWidget {
const ChatScreen({super.key}); const ChatScreen({super.key});
@@ -44,7 +45,12 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
if (response.statusCode == 200) { if (response.statusCode == 200) {
final data = jsonDecode(response.body); final data = jsonDecode(response.body);
print("Modelos ok"); print("--- MODELOS DISPONÍVEIS ---");
if (data['models'] != null) {
for (var m in data['models']) {
print("- ${m['name']}");
}
}
} }
} catch (e) { } catch (e) {
print("Erro ao listar modelos: $e"); print("Erro ao listar modelos: $e");
@@ -59,7 +65,6 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
super.dispose(); super.dispose();
} }
// Função para limpar o chat
void _clearChat() { void _clearChat() {
setState(() { setState(() {
_messages.clear(); _messages.clear();
@@ -68,51 +73,49 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
} }
Future<void> _handleSubmitted(String text) async { Future<void> _handleSubmitted(String text) async {
// BLOQUEIO: Se já estiver a escrever (isTyping), ignora o clique
if (text.trim().isEmpty || _isTyping) return; if (text.trim().isEmpty || _isTyping) return;
_textController.clear(); _textController.clear();
setState(() { setState(() {
_messages.insert(0, ChatMessage(text: text)); _messages.insert(0, ChatMessage(text: text));
_isTyping = true; // Ativa o bloqueio _isTyping = true;
}); });
try { try {
final url = Uri.parse('http://89.114.196.110:11434/v1/chat/completions'); final url = Uri.parse('http://89.114.196.110:11434/api/chat');
final response = await http final response = await http
.post( .post(
url, url,
headers: { headers: {
'Content-Type': 'application/json', 'Content-Type': 'application/json',
'Accept': 'application/json',
}, },
body: jsonEncode({ body: jsonEncode({
'model': 'tinyllama', 'model': 'qwen3:4b',
'messages': [{'role': 'user', 'content': text}], 'messages': [{'role': 'user', 'content': text}],
'stream': false, 'stream': false,
}), }),
) )
.timeout(const Duration(seconds: 60)); .timeout(const Duration(seconds: 60));
if (response.statusCode == 200) { if (response.statusCode == 200) {
final data = jsonDecode(response.body); final data = jsonDecode(response.body);
final reply = data['choices'][0]['message']['content'] ?? 'Sem resposta.'; final reply = data['message']?['content'] ?? 'Sem resposta.';
if (mounted) { if (mounted) {
setState(() { setState(() {
_isTyping = false; // Liberta o bloqueio _isTyping = false;
_messages.insert(0, ChatMessage(text: reply, isAssistant: true)); _messages.insert(0, ChatMessage(text: reply, isAssistant: true));
}); });
} }
} else { } else {
throw Exception('Erro ${response.statusCode}'); throw Exception('Erro HTTP ${response.statusCode}: ${response.body}');
} }
} catch (e) { } catch (e) {
if (mounted) { if (mounted) {
setState(() { setState(() {
_isTyping = false; // Liberta o bloqueio mesmo em caso de erro _isTyping = false;
_messages.insert( _messages.insert(
0, 0,
ChatMessage(text: "Erro: $e", isAssistant: true), ChatMessage(text: "Erro: $e", isAssistant: true),
@@ -122,7 +125,6 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
} }
} }
// ... (Mantenha _buildMessage, _buildAvatar, _buildTypingIndicator e _buildAnimatedDot iguais)
Widget _buildMessage(ChatMessage message) { Widget _buildMessage(ChatMessage message) {
bool isAssistant = message.isAssistant; bool isAssistant = message.isAssistant;
return Padding( return Padding(
@@ -134,7 +136,7 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
if (isAssistant) _buildAvatar(Icons.auto_awesome), if (isAssistant) _buildAvatar(Icons.auto_awesome),
Flexible( Flexible(
child: Container( child: Container(
padding: const EdgeInsets.symmetric(horizontal: 20.0, vertical: 14.0), padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 10.0),
decoration: BoxDecoration( decoration: BoxDecoration(
gradient: isAssistant gradient: isAssistant
? const LinearGradient(colors: [Color(0xFFF1F5F9), Color(0xFFE2E8F0)]) ? const LinearGradient(colors: [Color(0xFFF1F5F9), Color(0xFFE2E8F0)])
@@ -146,10 +148,19 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
bottomRight: Radius.circular(isAssistant ? 20 : 4), bottomRight: Radius.circular(isAssistant ? 20 : 4),
), ),
), ),
child: Text( child: isAssistant
message.text, ? MarkdownBody(
style: TextStyle(color: isAssistant ? Colors.black87 : Colors.white), data: message.text,
), styleSheet: MarkdownStyleSheet(
p: const TextStyle(color: Colors.black87, fontSize: 15, height: 1.4),
strong: const TextStyle(color: Colors.black, fontWeight: FontWeight.bold),
listBullet: const TextStyle(color: Colors.black87),
),
)
: Text(
message.text,
style: const TextStyle(color: Colors.white, fontSize: 15, height: 1.4),
),
), ),
), ),
if (!isAssistant) _buildAvatar(Icons.person), if (!isAssistant) _buildAvatar(Icons.person),
@@ -219,10 +230,9 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
child: SafeArea( child: SafeArea(
child: Row( child: Row(
children: [ children: [
// BOTÃO APAGAR CHAT
IconButton( IconButton(
icon: const Icon(Icons.delete_sweep_rounded, color: Colors.redAccent), icon: const Icon(Icons.delete_sweep_rounded, color: Colors.redAccent),
onPressed: _isTyping ? null : _clearChat, // Desativa enquanto digita onPressed: _isTyping ? null : _clearChat,
), ),
Expanded( Expanded(
child: Container( child: Container(
@@ -233,7 +243,7 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
), ),
child: TextField( child: TextField(
controller: _textController, controller: _textController,
enabled: !_isTyping, // Bloqueia o campo de texto enabled: !_isTyping,
onSubmitted: _handleSubmitted, onSubmitted: _handleSubmitted,
decoration: InputDecoration( decoration: InputDecoration(
hintText: _isTyping ? "Aguarde a resposta..." : "Mensagem EPVChat...", hintText: _isTyping ? "Aguarde a resposta..." : "Mensagem EPVChat...",
@@ -248,7 +258,7 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
decoration: BoxDecoration( decoration: BoxDecoration(
gradient: LinearGradient( gradient: LinearGradient(
colors: _isTyping colors: _isTyping
? [Colors.grey, Colors.grey] // Cor de desativado ? [Colors.grey, Colors.grey]
: [const Color(0xFF8ad5c9), const Color(0xFF57a7ed)], : [const Color(0xFF8ad5c9), const Color(0xFF57a7ed)],
begin: Alignment.topLeft, begin: Alignment.topLeft,
end: Alignment.bottomRight, end: Alignment.bottomRight,
@@ -279,20 +289,15 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
Expanded( Expanded(
child: ListView( child: ListView(
controller: _scrollController, controller: _scrollController,
reverse: true, // Mantém a lógica de mensagens novas em baixo reverse: true,
children: [ children: [
// As mensagens vêm primeiro (no reverse: true, o topo da lista é o fundo do ecrã)
...(_isTyping ? [_buildTypingIndicator()] : []), ...(_isTyping ? [_buildTypingIndicator()] : []),
..._messages.map((msg) => _buildMessage(msg)), ..._messages.map((msg) => _buildMessage(msg)),
// O LOGO E O SOMBREADO AGORA SÃO O ÚLTIMO ITEM DO LISTVIEW
// Quando o utilizador sobe o chat, eles sobem junto
Padding( Padding(
padding: const EdgeInsets.only(bottom: 50, top: 20), padding: const EdgeInsets.only(bottom: 50, top: 20),
child: Stack( child: Stack(
alignment: Alignment.center, alignment: Alignment.center,
children: [ children: [
// O Sombreado Verde
Container( Container(
height: screenWidth * 0.8, height: screenWidth * 0.8,
decoration: BoxDecoration( decoration: BoxDecoration(
@@ -305,7 +310,6 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
), ),
), ),
), ),
// O Logo
Image.asset( Image.asset(
'assets/logo.png', 'assets/logo.png',
height: 170, height: 170,
@@ -322,4 +326,4 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
), ),
); );
} }
} }

26
pubspec.lock
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@@ -1,6 +1,14 @@
# Generated by pub # Generated by pub
# See https://dart.dev/tools/pub/glossary#lockfile # See https://dart.dev/tools/pub/glossary#lockfile
packages: packages:
args:
dependency: transitive
description:
name: args
sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
url: "https://pub.dev"
source: hosted
version: "2.7.0"
async: async:
dependency: transitive dependency: transitive
description: description:
@@ -70,6 +78,14 @@ packages:
url: "https://pub.dev" url: "https://pub.dev"
source: hosted source: hosted
version: "6.0.0" version: "6.0.0"
flutter_markdown:
dependency: "direct main"
description:
name: flutter_markdown
sha256: "08fb8315236099ff8e90cb87bb2b935e0a724a3af1623000a9cec930468e0f27"
url: "https://pub.dev"
source: hosted
version: "0.7.7+1"
flutter_test: flutter_test:
dependency: "direct dev" dependency: "direct dev"
description: flutter description: flutter
@@ -123,6 +139,14 @@ packages:
url: "https://pub.dev" url: "https://pub.dev"
source: hosted source: hosted
version: "6.1.0" version: "6.1.0"
markdown:
dependency: transitive
description:
name: markdown
sha256: "935e23e1ff3bc02d390bad4d4be001208ee92cc217cb5b5a6c19bc14aaa318c1"
url: "https://pub.dev"
source: hosted
version: "7.3.0"
matcher: matcher:
dependency: transitive dependency: transitive
description: description:
@@ -242,4 +266,4 @@ packages:
version: "1.1.1" version: "1.1.1"
sdks: sdks:
dart: ">=3.11.1 <4.0.0" dart: ">=3.11.1 <4.0.0"
flutter: ">=3.18.0-18.0.pre.54" flutter: ">=3.22.0"

1
pubspec.yaml
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@@ -12,6 +12,7 @@ dependencies:
sdk: flutter sdk: flutter
cupertino_icons: ^1.0.8 cupertino_icons: ^1.0.8
http: ^1.6.0 http: ^1.6.0
flutter_markdown: ^0.7.3
dev_dependencies: dev_dependencies:
flutter_test: flutter_test: