Tudo a funcionar, apenas falta a base de dados

lib/chat_screen.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'dart:convert';
 import 'package:http/http.dart' as http;
 import 'dart:async';
+import 'package:flutter_markdown/flutter_markdown.dart';
 
 class ChatScreen extends StatefulWidget {
   const ChatScreen({super.key});
@@ -44,7 +45,12 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
 
       if (response.statusCode == 200) {
         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) {
       print("Erro ao listar modelos: $e");
@@ -59,7 +65,6 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
     super.dispose();
   }
 
-  // Função para limpar o chat
   void _clearChat() {
     setState(() {
       _messages.clear();
@@ -68,51 +73,49 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
   }
 
   Future<void> _handleSubmitted(String text) async {
-    // BLOQUEIO: Se já estiver a escrever (isTyping), ignora o clique
     if (text.trim().isEmpty || _isTyping) return;
 
     _textController.clear();
 
     setState(() {
       _messages.insert(0, ChatMessage(text: text));
-      _isTyping = true; // Ativa o bloqueio
+      _isTyping = true;
     });
 
     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
           .post(
         url,
         headers: {
           'Content-Type': 'application/json',
-          'Accept': 'application/json',
         },
         body: jsonEncode({
-          'model': 'tinyllama',
+          'model': 'qwen3:4b',
           'messages': [{'role': 'user', 'content': text}],
-          'stream': false,
+          'stream': false, 
         }),
       )
           .timeout(const Duration(seconds: 60));
 
       if (response.statusCode == 200) {
         final data = jsonDecode(response.body);
-        final reply = data['choices'][0]['message']['content'] ?? 'Sem resposta.';
+        final reply = data['message']?['content'] ?? 'Sem resposta.';
 
         if (mounted) {
           setState(() {
-            _isTyping = false; // Liberta o bloqueio
+            _isTyping = false;
             _messages.insert(0, ChatMessage(text: reply, isAssistant: true));
           });
         }
       } else {
-        throw Exception('Erro ${response.statusCode}');
+        throw Exception('Erro HTTP ${response.statusCode}: ${response.body}');
       }
     } catch (e) {
       if (mounted) {
         setState(() {
-          _isTyping = false; // Liberta o bloqueio mesmo em caso de erro
+          _isTyping = false;
           _messages.insert(
             0,
             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) {
     bool isAssistant = message.isAssistant;
     return Padding(
@@ -134,7 +136,7 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
           if (isAssistant) _buildAvatar(Icons.auto_awesome),
           Flexible(
             child: Container(
-              padding: const EdgeInsets.symmetric(horizontal: 20.0, vertical: 14.0),
+              padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 10.0),
               decoration: BoxDecoration(
                 gradient: isAssistant
                     ? const LinearGradient(colors: [Color(0xFFF1F5F9), Color(0xFFE2E8F0)])
@@ -146,10 +148,19 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
                   bottomRight: Radius.circular(isAssistant ? 20 : 4),
                 ),
               ),
-              child: Text(
-                message.text,
-                style: TextStyle(color: isAssistant ? Colors.black87 : Colors.white),
-              ),
+              child: isAssistant 
+                ? MarkdownBody(
+                    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),
@@ -219,10 +230,9 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
           child: SafeArea(
             child: Row(
               children: [
-                // BOTÃO APAGAR CHAT
                 IconButton(
                   icon: const Icon(Icons.delete_sweep_rounded, color: Colors.redAccent),
-                  onPressed: _isTyping ? null : _clearChat, // Desativa enquanto digita
+                  onPressed: _isTyping ? null : _clearChat,
                 ),
                 Expanded(
                   child: Container(
@@ -233,7 +243,7 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
                     ),
                     child: TextField(
                       controller: _textController,
-                      enabled: !_isTyping, // Bloqueia o campo de texto
+                      enabled: !_isTyping,
                       onSubmitted: _handleSubmitted,
                       decoration: InputDecoration(
                         hintText: _isTyping ? "Aguarde a resposta..." : "Mensagem EPVChat...",
@@ -248,7 +258,7 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
                   decoration: BoxDecoration(
                     gradient: LinearGradient(
                       colors: _isTyping
-                          ? [Colors.grey, Colors.grey] // Cor de desativado
+                          ? [Colors.grey, Colors.grey]
                           : [const Color(0xFF8ad5c9), const Color(0xFF57a7ed)],
                       begin: Alignment.topLeft,
                       end: Alignment.bottomRight,
@@ -279,20 +289,15 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
           Expanded(
             child: ListView(
               controller: _scrollController,
-              reverse: true, // Mantém a lógica de mensagens novas em baixo
+              reverse: true,
               children: [
-                // As mensagens vêm primeiro (no reverse: true, o topo da lista é o fundo do ecrã)
                 ...(_isTyping ? [_buildTypingIndicator()] : []),
                 ..._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: const EdgeInsets.only(bottom: 50, top: 20),
                   child: Stack(
                     alignment: Alignment.center,
                     children: [
-                      // O Sombreado Verde
                       Container(
                         height: screenWidth * 0.8,
                         decoration: BoxDecoration(
@@ -305,7 +310,6 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
                           ),
                         ),
                       ),
-                      // O Logo
                       Image.asset(
                         'assets/logo.png',
                         height: 170,
@@ -322,4 +326,4 @@ class _ChatScreenState extends State<ChatScreen> with TickerProviderStateMixin {
       ),
     );
   }
-}
+}