Replace rich_typewriter with typewritertext and enhance message rendering

- Migrated from rich_typewriter to typewritertext package
- Added dynamic text rendering with typewriter effect
- Implemented new state management for message display
- Enhanced ChatMessageBubble with progressive text reveal
- Updated pubspec.yaml and pubspec.lock dependencies

Author: jamalihassan0307

lib/data/view/chat/chat_screen.dart

@@ -143,6 +143,7 @@ class _ChatScreenState extends ConsumerState<ChatScreen> {
                       return ChatMessageBubble(
                         message: message,
                         onShare: () => Utils.share(message.response),
+                        isNewMessage: index == currentChat.messages.length - 1 && _isLoading,
                       );
                     },
                   ),

lib/data/view/chat/widgets/chat_message_bubble.dart

@@ -1,33 +1,50 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_chatgpt_text_and_image_processing/configs/utils.dart';
-import 'package:rich_typewriter/rich_typewriter.dart';
+import 'package:typewritertext/typewritertext.dart';
 import '../../../models/chat_message.dart';
 
-class ChatMessageBubble extends StatelessWidget {
+class ChatMessageBubble extends StatefulWidget {
   final ChatMessage message;
   final VoidCallback onShare;
+  final bool isNewMessage;
 
   const ChatMessageBubble({
     super.key,
     required this.message,
     required this.onShare,
+    this.isNewMessage = false,
   });
 
+  @override
+  State<ChatMessageBubble> createState() => _ChatMessageBubbleState();
+}
+
+class _ChatMessageBubbleState extends State<ChatMessageBubble> {
+  bool _showFullText = false;
+
+  @override
+  void initState() {
+    super.initState();
+    if (!widget.isNewMessage) {
+      _showFullText = true;
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.stretch,
       children: [
         _buildMessageBubble(
           context,
-          message.query,
+          widget.message.query,
           isUser: true,
         ),
         const SizedBox(height: 8),
         _buildMessageBubble(
           context,
-          message.response,
+          widget.message.response,
           isUser: false,
         ),
       ],
@@ -39,13 +56,23 @@ class ChatMessageBubble extends StatelessWidget {
     final paragraphs = text.split('\n\n');
 
     for (final paragraph in paragraphs) {
-      if (paragraph.startsWith('**') && paragraph.endsWith('**')) {
-        // Headers
+      if (paragraph.startsWith('# ')) {
+        // H1 Headers
+        spans.add(TextSpan(
+          text: '${paragraph.substring(2)}\n',
+          style: const TextStyle(
+            color: Colors.white,
+            fontSize: 24,
+            fontWeight: FontWeight.bold,
+          ),
+        ));
+      } else if (paragraph.startsWith('## ')) {
+        // H2 Headers
         spans.add(TextSpan(
-          text: '${paragraph.replaceAll('**', '')}\n',
+          text: '${paragraph.substring(3)}\n',
           style: const TextStyle(
             color: Colors.white,
-            fontSize: 18,
+            fontSize: 20,
             fontWeight: FontWeight.bold,
           ),
         ));
@@ -103,14 +130,27 @@ class ChatMessageBubble extends StatelessWidget {
                 text,
                 style: const TextStyle(color: Colors.white),
               )
+            else if (_showFullText)
+              SelectableText(
+                text,
+                style: const TextStyle(
+                  color: Color(0xFFD1D5DB),
+                  fontSize: 16,
+                ),
+              )
             else
-              RichTypewriter(
-                symbolDelay: (symbol) =>
-                    switch (symbol) { TextSpan(text: ' ') => 50, TextSpan(text: '\n') => 200, _ => 20 },
-                onCompleted: () => debugPrint('Finished typing response'),
-                child: SelectableText.rich(
-                  TextSpan(children: _processText(text)),
+              TypeWriter(
+                text: text,
+                duration: const Duration(milliseconds: 30),
+                textStyle: const TextStyle(
+                  color: Color(0xFFD1D5DB),
+                  fontSize: 16,
                 ),
+                onEnd: () {
+                  setState(() {
+                    _showFullText = true;
+                  });
+                },
               ),
             if (!isUser) ...[
               const Divider(color: Color(0xFF4D4D4D)),
@@ -134,7 +174,7 @@ class ChatMessageBubble extends StatelessWidget {
                       size: 20,
                       color: Color(0xFFD1D5DB),
                     ),
-                    onPressed: onShare,
+                    onPressed: widget.onShare,
                   ),
                 ],
               ),

pubspec.lock

@@ -536,14 +536,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.2"
-  rich_typewriter:
-    dependency: "direct main"
-    description:
-      name: rich_typewriter
-      sha256: "6d05f889e11d1ffa42268b713f01f7a47a654f142f46d3f09949934bbf6be5ba"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.0"
   riverpod:
     dependency: transitive
     description:
@@ -773,6 +765,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.0"
+  typewritertext:
+    dependency: "direct main"
+    description:
+      name: typewritertext
+      sha256: c6b90cdc9f7fd7ae3235d9c926012000f7a1765cd49d67b78370dc61123212b2
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.9"
   url_launcher:
     dependency: transitive
     description:

pubspec.yaml

@@ -49,9 +49,9 @@ dependencies:
   provider: ^6.1.1
   flutter_riverpod: ^2.5.1
   shared_preferences: ^2.2.2
-  rich_typewriter: ^1.0.1
   uuid: ^4.3.3 # For unique chat IDs
   markdown_widget: ^2.3.2+3
+  typewritertext: ^3.0.9
 
 dev_dependencies:
   flutter_test: