feat:增加服务器接口模块

lib/pages/chat_page.dart

@@ -1,5 +1,10 @@
+import 'dart:convert';
+
 import 'package:flutter/material.dart';
 import 'package:liquid_glass_widgets/liquid_glass_widgets.dart';
+import 'package:sweet_chat_app/models/ImMessage.dart';
+import 'package:sweet_chat_app/services/webSocket_service.dart';
+import 'package:sweet_chat_app/utils/SpUtil.dart';
 
 class ChatMessage {
   final String text;
@@ -34,10 +39,45 @@ class _ChatPageState extends State<ChatPage> {
     super.initState();
 
     _messages = [
-      ChatMessage(text: '在吗？', isMe: false, avatar: widget.avatarUrl),
-      ChatMessage(text: '在的，怎么啦 😊', isMe: true),
-      ChatMessage(text: '今晚一起吃饭吗？', isMe: false, avatar: widget.avatarUrl),
+      // ChatMessage(text: '在吗？', isMe: false, avatar: widget.avatarUrl),
+      // ChatMessage(text: '在的，怎么啦 😊', isMe: true),
+      // ChatMessage(text: '今晚一起吃饭吗？', isMe: false, avatar: widget.avatarUrl),
     ];
+
+    final userId = SpUtil.getInt('userId') ?? 0;
+    final online = ImMessage(
+      type: "ONLINE",
+      from: userId.toString(),
+      to: '',
+      content: '',
+    );
+    
+    WebSocketService().connect('ws://192.168.31.108:5050?userId=$userId');
+    WebSocketService().send(jsonEncode(online.toJson()));
+
+    WebSocketService().messages.listen((msg) {
+      print('收到消息: $msg');
+
+      setState(() {
+        _messages.add(ChatMessage(text: msg, isMe: false, avatar: widget.avatarUrl));
+      });
+      
+      _controller.clear();
+
+      Future.delayed(const Duration(milliseconds: 100), () {
+        _scrollController.animateTo(
+          _scrollController.position.maxScrollExtent,
+          duration: const Duration(milliseconds: 300),
+          curve: Curves.easeOut,
+        );
+      });
+    });
+  }
+  
+  @override
+  void dispose() {
+    super.dispose();
+    WebSocketService().disconnect();
   }
 
   void _sendMessage() {