feat:增加消息记录功能

lib/apis/message_api.dart

@@ -0,0 +1,19 @@
+import 'package:sweet_chat_app/models/chat_message.dart';
+import 'package:sweet_chat_app/models/chat_session.dart';
+import 'package:sweet_chat_app/services/dio_service.dart';
+
+Future<List<ChatSession>> getChatSessionApi(int userId) async {
+  final res = await dioService.get('/message/session/$userId');
+
+  if (res.data == null) return [];
+
+  return (res.data as List).map((e) => ChatSession.fromJson(e)).toList();
+}
+
+Future<List<ChatMessage>> getChatMessageApi(int conversationId) async {
+  final res = await dioService.get('/message/session/$conversationId/detail');
+
+  if (res.data == null) return [];
+
+  return (res.data as List).map((e) => ChatMessage.fromJson(e)).toList();
+}

lib/config/AppConfig.dart

@@ -0,0 +1,4 @@
+class AppConfig {
+  static const String baseUrl = 'http://192.168.31.108:2836/api';
+  static const String wsUrl = 'ws://192.168.31.108:5050';
+}

lib/main.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:liquid_glass_widgets/liquid_glass_widgets.dart';
 import 'package:sweet_chat_app/pages/login.dart';
-import 'package:sweet_chat_app/utils/SpUtil.dart';
+import 'package:sweet_chat_app/utils/sp_utils.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();

lib/models/auth.dart

@@ -1,12 +1,13 @@
 import 'package:json_annotation/json_annotation.dart';
+import 'package:sweet_chat_app/models/user.dart';
 
 part 'auth.g.dart';
 
 @JsonSerializable()
 class Auth {
-  final int userId;
+  final User user;
 
-  Auth({required this.userId});
+  Auth({required this.user});
 
   factory Auth.fromJson(Map<String, dynamic> json) => _$AuthFromJson(json);
 

lib/models/auth.g.dart

@@ -7,8 +7,8 @@ part of 'auth.dart';
 // **************************************************************************
 
 Auth _$AuthFromJson(Map<String, dynamic> json) =>
-    Auth(userId: (json['userId'] as num).toInt());
+    Auth(user: User.fromJson(json['user'] as Map<String, dynamic>));
 
 Map<String, dynamic> _$AuthToJson(Auth instance) => <String, dynamic>{
-  'userId': instance.userId,
+  'user': instance.user,
 };

lib/models/chat_message.dart

@@ -0,0 +1,26 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'chat_message.g.dart';
+
+@JsonSerializable()
+class ChatMessage {
+  final int msgId;
+  final int senderId;
+  final String content;
+  /// 消息类型（1文本 2图片 3语音）
+  final int msgType;
+  final DateTime createTime;
+
+  ChatMessage({
+    required this.msgId,
+    required this.senderId,
+    required this.content,
+    required this.msgType,
+    required this.createTime,
+  });
+
+  factory ChatMessage.fromJson(Map<String, dynamic> json) =>
+      _$ChatMessageFromJson(json);
+
+  Map<String, dynamic> toJson() => _$ChatMessageToJson(this);
+}

lib/models/chat_message.g.dart

@@ -0,0 +1,24 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'chat_message.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+ChatMessage _$ChatMessageFromJson(Map<String, dynamic> json) => ChatMessage(
+  msgId: (json['msgId'] as num).toInt(),
+  senderId: (json['senderId'] as num).toInt(),
+  content: json['content'] as String,
+  msgType: (json['msgType'] as num).toInt(),
+  createTime: DateTime.parse(json['createTime'] as String),
+);
+
+Map<String, dynamic> _$ChatMessageToJson(ChatMessage instance) =>
+    <String, dynamic>{
+      'msgId': instance.msgId,
+      'senderId': instance.senderId,
+      'content': instance.content,
+      'msgType': instance.msgType,
+      'createTime': instance.createTime.toIso8601String(),
+    };

lib/models/chat_session.dart

@@ -0,0 +1,30 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'chat_session.g.dart';
+
+@JsonSerializable()
+class ChatSession {
+  final int conversationId;
+  final int targetUserId;
+  final String title;
+  final String avatarUrl;
+  final int msgType;
+  final String lastMessageContent;
+  final DateTime lastMessageTime;
+  final int unreadCount;
+
+  ChatSession({
+    required this.conversationId,
+    required this.targetUserId,
+    required this.title,
+    required this.avatarUrl,
+    required this.msgType,
+    required this.lastMessageContent,
+    required this.lastMessageTime,
+    required this.unreadCount,
+  });
+
+  factory ChatSession.fromJson(Map<String, dynamic> json) => _$ChatSessionFromJson(json);
+
+  Map<String, dynamic> toJson() => _$ChatSessionToJson(this);
+}

lib/models/chat_session.g.dart

@@ -0,0 +1,30 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'chat_session.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+ChatSession _$ChatSessionFromJson(Map<String, dynamic> json) => ChatSession(
+  conversationId: (json['conversationId'] as num).toInt(),
+  targetUserId: (json['targetUserId'] as num).toInt(),
+  title: json['title'] as String,
+  avatarUrl: json['avatarUrl'] as String,
+  msgType: (json['msgType'] as num).toInt(),
+  lastMessageContent: json['lastMessageContent'] as String,
+  lastMessageTime: DateTime.parse(json['lastMessageTime'] as String),
+  unreadCount: (json['unreadCount'] as num).toInt(),
+);
+
+Map<String, dynamic> _$ChatSessionToJson(ChatSession instance) =>
+    <String, dynamic>{
+      'conversationId': instance.conversationId,
+      'targetUserId': instance.targetUserId,
+      'title': instance.title,
+      'avatarUrl': instance.avatarUrl,
+      'msgType': instance.msgType,
+      'lastMessageContent': instance.lastMessageContent,
+      'lastMessageTime': instance.lastMessageTime.toIso8601String(),
+      'unreadCount': instance.unreadCount,
+    };

lib/models/contact_info.dart

@@ -0,0 +1,20 @@
+import 'package:azlistview/azlistview.dart';
+
+class ContactInfo extends ISuspensionBean {
+  final int id;
+  final String name;
+  final String avatar;
+  String? tagIndex;
+  String? namePinyin;
+
+  ContactInfo({
+    required this.id,
+    required this.name,
+    required this.avatar,
+    this.tagIndex,
+    this.namePinyin,
+  });
+
+  @override
+  String getSuspensionTag() => tagIndex ?? '#';
+}

lib/models/im_message.dart

@@ -1,7 +1,20 @@
 import 'dart:convert';
 
+enum ImMessageType {
+  chatPrivate('CHAT_PRIVATE'),
+  chatGroup('CHAT_GROUP'),
+  online('ONLINE'),
+  heartbeat('HEARTBEAT'),
+  system('SYSTEM'),
+  notice('NOTICE');
+
+  final String value;
+
+  const ImMessageType(this.value);
+}
+
 class ImMessage {
-  final String type;
+  final ImMessageType type;
   final String from;
   final String to;
   final String content;
@@ -19,7 +32,7 @@ class ImMessage {
 
   factory ImMessage.fromJson(Map<String, dynamic> json) {
     return ImMessage(
-      type: json['type'],
+      type: ImMessageType.values.firstWhere((e) => e.value == json['type']),
       from: json['from'],
       to: json['to'],
       content: json['content'],
@@ -27,7 +40,7 @@ class ImMessage {
   }
 
   Map<String, dynamic> toJson() => {
-    'type': type,
+    'type': type.value,
     'from': from,
     'to': to,
     'content': content,
@@ -36,4 +49,13 @@ class ImMessage {
   String toJsonString() {
     return jsonEncode(toJson());
   }
-}
+
+  static ImMessage online(int userId) {
+    return ImMessage(
+      type: ImMessageType.online,
+      from: userId.toString(),
+      to: 'SYSTEM',
+      content: '',
+    );
+  }
+}

lib/pages/chat_page.dart

@@ -1,27 +1,22 @@
+import 'dart:async';
+
 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/apis/message_api.dart';
+import 'package:sweet_chat_app/models/chat_message.dart';
+import 'package:sweet_chat_app/models/contact_info.dart';
+import 'package:sweet_chat_app/models/im_message.dart';
 import 'package:sweet_chat_app/services/webSocket_service.dart';
-import 'package:sweet_chat_app/utils/SpUtil.dart';
+import 'package:sweet_chat_app/utils/sp_utils.dart';
-
-class ChatMessage {
-  final String text;
-  final bool isMe;
-  final String? avatar;
-
-  ChatMessage({required this.text, required this.isMe, this.avatar});
-}
 
 class ChatPage extends StatefulWidget {
-  final int contractId;
+  final ContactInfo contactInfo;
-  final String contactName;
+  final int conversationId;
-  final String avatarUrl;
 
   const ChatPage({
     super.key,
-    required this.contractId,
+    required this.contactInfo,
-    required this.contactName,
+    required this.conversationId,
-    required this.avatarUrl,
   });
 
   @override
@@ -29,79 +24,93 @@ class ChatPage extends StatefulWidget {
 }
 
 class _ChatPageState extends State<ChatPage> {
-  final TextEditingController _controller = TextEditingController();
+  late StreamSubscription<String> _msgSub;
+  final TextEditingController _textController = TextEditingController();
   final ScrollController _scrollController = ScrollController();
 
   late int userId;
+  late String avatarUrl;
   late List<ChatMessage> _messages;
 
   @override
   void initState() {
     super.initState();
 
-    _messages = [];
-
     userId = SpUtil.getInt('userId') ?? 0;
-    final online = ImMessage(
+    avatarUrl = SpUtil.getString('avatarUrl') ?? '';
-      type: "ONLINE",
+    
-      from: userId.toString(),
+    _messages = [];
-      to: 'SYSTEM',
+    _loadChatMessage();
-      content: '',
-    );
 
-    WebSocketService().connect('ws://172.29.100.146:5050?userId=$userId');
+    _msgSub = WebSocketService().messages.listen((websocketMessage) {
-    WebSocketService().send(online.toJsonString());
+      _handleMessage(websocketMessage);
-
+      _textController.clear();
-    WebSocketService().messages.listen((wsMsg) {
-      final ImMessage imMsg = ImMessage.fromJsonString(wsMsg);
-
-      setState(() {
-        if (imMsg.type.contains('CHAT')) {
-          _messages.add(
-            ChatMessage(
-              text: imMsg.content,
-              isMe: userId.toString() == imMsg.from,
-              avatar: widget.avatarUrl,
-            ),
-          );
-        }
-      });
-
-      _controller.clear();
       scrollToBottom();
     });
   }
 
+  Future<void> _loadChatMessage() async {
+    final list = await getChatMessageApi(widget.conversationId);
+
+    if (!mounted) return;
+
+    setState(() {
+      _messages = list;
+    });
+  }
+
   @override
   void dispose() {
+    _msgSub.cancel();
+    _textController.dispose();
+    _scrollController.dispose();
     super.dispose();
-    WebSocketService().disconnect();
   }
 
   void _sendMessage() {
-    final text = _controller.text.trim();
+    final text = _textController.text.trim();
     if (text.isEmpty) return;
 
     final chat = ImMessage(
-      type: "CHAT_PRIVATE",
+      type: ImMessageType.chatPrivate,
       from: userId.toString(),
-      to: widget.contractId.toString(),
+      to: widget.contactInfo.id.toString(),
       content: text,
     );
     WebSocketService().send(chat.toJsonString());
   }
 
-  Widget _buildAvatar(String? url) {
+  bool checkIsMe(ChatMessage message) {
+    return message.senderId == userId;
+  }
+
+  void _handleMessage(String wsMsg) {
+    if (!mounted) return;
+
+    final ImMessage imMsg = ImMessage.fromJsonString(wsMsg);
+
+    setState(() {
+      if (imMsg.type.value.contains('CHAT')) {
+        _messages.add(
+          ChatMessage(
+            msgId: DateTime.now().millisecondsSinceEpoch,
+            senderId: userId,
+            content: imMsg.content,
+            msgType: 1,
+            createTime: DateTime.now(),
+          ),
+        );
+      }
+    });
+  }
+
+  Widget _buildAvatar(String url) {
     return Padding(
       padding: const EdgeInsets.only(right: 8, top: 4),
       child: CircleAvatar(
         radius: 18,
         backgroundColor: Colors.grey[200],
-        backgroundImage: url != null ? NetworkImage(url) : null,
+        backgroundImage: NetworkImage(url),
-        child:
-            url == null
-                ? const Icon(Icons.person, size: 18, color: Colors.grey)
-                : null,
       ),
     );
   }
@@ -130,7 +139,7 @@ class _ChatPageState extends State<ChatPage> {
       backgroundColor: Color(0xFF120D25),
       foregroundColor: Colors.white,
       title: Text(
-        widget.contactName,
+        widget.contactInfo.name,
         style: TextStyle(
           fontSize: 18,
           fontWeight: FontWeight.w600,
@@ -154,14 +163,16 @@ class _ChatPageState extends State<ChatPage> {
 
           return Row(
             mainAxisAlignment:
-                msg.isMe ? MainAxisAlignment.end : MainAxisAlignment.start,
+                checkIsMe(msg)
+                    ? MainAxisAlignment.end
+                    : MainAxisAlignment.start,
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
-              if (!msg.isMe) _buildAvatar(msg.avatar),
+              if (!checkIsMe(msg)) _buildAvatar(widget.contactInfo.avatar),
               Flexible(
                 child: Container(
                   decoration: BoxDecoration(
-                    color: msg.isMe ? Color(0xFF2FA951): Color(0xFF030816),
+                    color: checkIsMe(msg) ? Color(0xFF2FA951) : Color(0xFF030816),
                     borderRadius: BorderRadius.circular(12),
                   ),
                   padding: const EdgeInsets.symmetric(
@@ -169,13 +180,13 @@ class _ChatPageState extends State<ChatPage> {
                     vertical: 10,
                   ),
                   child: Text(
-                    msg.text,
+                    msg.content,
                     style: const TextStyle(fontSize: 16, color: Colors.white),
                   ),
                 ),
               ),
               const SizedBox(width: 8),
-              if (msg.isMe) _buildAvatar("https://picsum.photos/id/1027/200"),
+              if (checkIsMe(msg)) _buildAvatar(avatarUrl),
             ],
           );
         },
@@ -192,7 +203,7 @@ class _ChatPageState extends State<ChatPage> {
           children: [
             Expanded(
               child: TextField(
-                controller: _controller,
+                controller: _textController,
                 onSubmitted: (_) => _sendMessage(),
                 style: const TextStyle(color: Colors.white),
                 cursorColor: Colors.white,

lib/pages/contact_page.dart

@@ -2,31 +2,12 @@ import 'package:azlistview/azlistview.dart';
 import 'package:flutter/material.dart';
 import 'package:lpinyin/lpinyin.dart';
 import 'package:sweet_chat_app/apis/user_api.dart';
+import 'package:sweet_chat_app/models/contact_info.dart';
 import 'package:sweet_chat_app/models/user.dart';
-import 'package:sweet_chat_app/utils/SpUtil.dart';
+import 'package:sweet_chat_app/utils/sp_utils.dart';
 
 import 'chat_page.dart';
 
-class ContactInfo extends ISuspensionBean {
-  final int id;
-  final String name;
-  final String avatar;
-  String? tagIndex;
-  String? namePinyin;
-
-  ContactInfo({
-    required this.id,
-    required this.name,
-    required this.avatar,
-    this.tagIndex,
-    this.namePinyin,
-  });
-
-  @override
-  String getSuspensionTag() => tagIndex ?? '#';
-}
-
-/// =================  Page  =================
 class ContactsPage extends StatefulWidget {
   const ContactsPage({super.key});
 
@@ -163,14 +144,7 @@ class _ContactsPageState extends State<ContactsPage> {
   void onTapContact(ContactInfo contact) {
     Navigator.push(
       context,
-      MaterialPageRoute(
+      MaterialPageRoute(builder: (_) => ChatPage(contactInfo: contact, conversationId: 0)),
-        builder:
-            (_) => ChatPage(
-              contractId: contact.id,
-              contactName: contact.name,
-              avatarUrl: contact.avatar,
-            ),
-      ),
     );
   }
 }

lib/pages/home_page.dart

@@ -2,9 +2,13 @@ import 'package:flutter/material.dart';
 import 'package:liquid_glass_widgets/widgets/shared/glass_page.dart';
 import 'package:liquid_glass_widgets/widgets/surfaces/glass_bottom_bar.dart';
 import 'package:liquid_glass_widgets/widgets/surfaces/glass_scaffold.dart';
-import 'package:sweet_chat_app/pages/contacts_page.dart';
+import 'package:sweet_chat_app/config/AppConfig.dart';
+import 'package:sweet_chat_app/models/im_message.dart';
+import 'package:sweet_chat_app/pages/contact_page.dart';
 import 'package:sweet_chat_app/pages/explore_page.dart';
-import 'package:sweet_chat_app/pages/messages_page.dart';
+import 'package:sweet_chat_app/pages/message_page.dart';
+import 'package:sweet_chat_app/services/webSocket_service.dart';
+import 'package:sweet_chat_app/utils/sp_utils.dart';
 
 
 class HomePage extends StatefulWidget {
@@ -23,7 +27,24 @@ class _HomePageState extends State<HomePage> {
     const ExplorePage(),
     const Center(child: Text('⚙ 我的', style: TextStyle(fontSize: 26))),
   ];
+  
+  @override
+  void initState() {
+    super.initState();
+    initWebsocket();
+  }
+  
+  @override
+  void dispose() {
+    super.dispose();
+  }
 
+  void initWebsocket() {
+    final userId = SpUtil.getInt('userId') ?? 0;
+    WebSocketService().connect('${AppConfig.wsUrl}?userId=$userId');
+    WebSocketService().send(ImMessage.online(userId).toJsonString());
+  }
+  
   @override
   Widget build(BuildContext context) {
     return GlassScaffold(

lib/pages/login.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
-import 'package:fluttertoast/fluttertoast.dart';
 import 'package:liquid_glass_widgets/liquid_glass_widgets.dart';
 import 'package:sweet_chat_app/apis/auth_api.dart';
-import 'package:sweet_chat_app/utils/SpUtil.dart';
+import 'package:sweet_chat_app/utils/sp_utils.dart';
+import 'package:sweet_chat_app/utils/toast_utils.dart';
 import 'home_page.dart';
 
 class LoginPage extends StatefulWidget {
@@ -18,30 +18,21 @@ class _LoginPageState extends State<LoginPage> {
 
   void _login() async {
     try {
-      final auth = await loginApi(_usernameController.text, _passwordController.text);
+      final auth = await loginApi(
-      await SpUtil.setInt('userId', auth.userId);
+        _usernameController.text,
-
+        _passwordController.text,
-      Navigator.of(context).push(
-        MaterialPageRoute(
-          builder: (_) => const HomePage(),
-        ),
       );
+      await SpUtil.setInt('userId', auth.user.id);
+      await SpUtil.setString('avatarUrl', auth.user.avatarUrl);
       
-      Fluttertoast.showToast(
+      Navigator.of(
-        msg: "登录成功",
+        context,
-        toastLength: Toast.LENGTH_SHORT,
+      ).push(MaterialPageRoute(builder: (_) => const HomePage()));
-        gravity: ToastGravity.TOP,
+      
-        backgroundColor: Colors.white,
+      ToastUtils.success("登录成功");
-        textColor: Colors.black,
-      );
     } catch (e) {
-      Fluttertoast.showToast(
+      print(e.toString());
-        msg: "登录失败",
+      ToastUtils.error("登录失败");
-        toastLength: Toast.LENGTH_SHORT,
-        gravity: ToastGravity.TOP,
-        backgroundColor: Colors.white,
-        textColor: Colors.black,
-      );
     }
   }
 

lib/pages/message_page.dart

@@ -1,11 +1,70 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:liquid_glass_widgets/liquid_glass_widgets.dart';
+import 'package:sweet_chat_app/apis/message_api.dart';
+import 'package:sweet_chat_app/models/chat_session.dart';
+import 'package:sweet_chat_app/models/contact_info.dart';
+import 'package:sweet_chat_app/pages/chat_page.dart';
+import 'package:sweet_chat_app/services/webSocket_service.dart';
+import 'package:sweet_chat_app/utils/date_utils.dart';
+import 'package:sweet_chat_app/utils/sp_utils.dart';
 
-import 'chat_page.dart';
+class MessagePage extends StatefulWidget {
-
-class MessagePage extends StatelessWidget {
   const MessagePage({super.key});
 
+  @override
+  State<MessagePage> createState() => _MessagePageState();
+}
+
+class _MessagePageState extends State<MessagePage> {
+  late StreamSubscription<String> _msgSub;
+  late List<ChatSession> _chatSessionList;
+
+  @override
+  void initState() {
+    super.initState();
+    _chatSessionList = [];
+    _loadChatSession();
+    _msgSub = WebSocketService().messages.listen((websocketMessage) {});
+  }
+
+  @override
+  void dispose() {
+    _msgSub.cancel();
+    super.dispose();
+  }
+
+  Future<void> _loadChatSession() async {
+    final userId = SpUtil.getInt('userId') ?? 0;
+    final list = await getChatSessionApi(userId);
+
+    if (!mounted) return;
+
+    setState(() {
+      _chatSessionList = list;
+    });
+  }
+
+  void onTapSession(ChatSession chatSession) {
+    final ContactInfo contactInfo = ContactInfo(
+      id: chatSession.targetUserId,
+      name: chatSession.title,
+      avatar: chatSession.avatarUrl,
+    );
+
+    final ChatPage chatPage = ChatPage(
+      contactInfo: contactInfo,
+      conversationId: chatSession.conversationId,
+    );
+
+    Navigator.push(context, MaterialPageRoute(builder: (_) => chatPage)).then((
+      _,
+    ) {
+      _loadChatSession();
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -25,9 +84,9 @@ class MessagePage extends StatelessWidget {
         icon: const Icon(Icons.menu, size: 22, color: Colors.white),
         splashRadius: 20,
       ),
-      title: const Text(
+      title: Text(
-        '消息',
+        '消息 ${WebSocketService().isConnected}' ,
-        style: TextStyle(
+        style: const TextStyle(
           fontSize: 18,
           fontWeight: FontWeight.w600,
           color: Colors.white,
@@ -59,71 +118,42 @@ class MessagePage extends StatelessWidget {
       separatorBuilder: (BuildContext context, int index) {
         return SizedBox(height: 10);
       },
-      itemCount: _messages.length,
+      itemCount: _chatSessionList.length,
       itemBuilder: (context, index) {
-        final msg = _messages[index];
+        final msg = _chatSessionList[index];
         return _buildMessageItem(context, msg);
       },
     );
   }
 
-  Widget _buildMessageItem(BuildContext context, Message msg) {
+  Widget _buildMessageItem(BuildContext context, ChatSession session) {
     return GlassCard(
       padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 0),
       child: ListTile(
         contentPadding: EdgeInsets.zero,
-        onTap:
+        onTap: () => onTapSession(session),
-            () => {
-              Navigator.push(
-                context,
-                MaterialPageRoute(
-                  builder:
-                      (_) => const ChatPage(
-                        contractId: 0,
-                        contactName: '张三',
-                        avatarUrl: 'https://picsum.photos/id/1012/200',
-                      ),
-                ),
-              ),
-            },
         leading: CircleAvatar(
           backgroundColor: Colors.transparent,
-          backgroundImage: NetworkImage(msg.avatar),
+          backgroundImage: NetworkImage(session.avatarUrl),
         ),
         title: Text(
-          msg.name,
+          session.title,
           style: const TextStyle(
             fontWeight: FontWeight.w500,
             color: Colors.white,
           ),
         ),
         subtitle: Text(
-          msg.lastMsg,
+          session.lastMessageContent,
           maxLines: 1,
           overflow: TextOverflow.ellipsis,
           style: const TextStyle(fontSize: 13, color: Color(0xFFAEAEB2)),
         ),
         trailing: Text(
-          msg.time,
+          formatChatTime(session.lastMessageTime),
           style: const TextStyle(fontSize: 12, color: Color(0xFF8E8E93)),
         ),
       ),
     );
   }
 }
-
-class Message {
-  final String name;
-  final String avatar;
-  final String lastMsg;
-  final String time;
-
-  Message({
-    required this.name,
-    required this.avatar,
-    required this.lastMsg,
-    required this.time,
-  });
-}
-
-List<Message> _messages = [];

lib/services/dio_service.dart

@@ -1,7 +1,8 @@
 import 'package:dio/dio.dart';
+import 'package:sweet_chat_app/config/AppConfig.dart';
 
 final dioService = Dio(BaseOptions(
-  baseUrl: 'http://172.29.100.146:2836/api',
+  baseUrl: AppConfig.baseUrl,
-  connectTimeout: Duration(seconds: 10),
+  connectTimeout: Duration(seconds: 5),
   headers: {'Content-Type': 'application/json'},
 ));

lib/services/message_store.dart

@@ -0,0 +1,13 @@
+import 'package:sweet_chat_app/models/im_message.dart';
+
+class MessageStore {
+  static final Map<String, List<ImMessage>> _data = {};
+
+  static void add(ImMessage msg) {
+    _data.putIfAbsent(msg.to, () => []).add(msg);
+    _data.putIfAbsent(msg.from, () => []).add(msg);
+  }
+
+  static List<ImMessage> messagesFor(String userId) =>
+      _data[userId] ?? [];
+}

lib/utils/date_utils.dart

@@ -0,0 +1,26 @@
+import 'package:intl/intl.dart';
+
+String formatChatTime(DateTime time) {
+  final now = DateTime.now();
+  final t = time.toLocal();
+
+  final today = DateTime(now.year, now.month, now.day);
+  final d = DateTime(t.year, t.month, t.day);
+
+  final diff = today.difference(d).inDays;
+  final hm = DateFormat('HH:mm').format(t);
+
+  if (diff == 0) return hm;
+  if (diff == 1) return '昨天 $hm';
+
+  // 本周
+  if (diff < 7 && d.weekday <= now.weekday) {
+    return '${DateFormat('EEEEE', 'zh_CN').format(t)} $hm';
+  }
+
+  if (t.year == now.year) {
+    return DateFormat('M月d日 HH:mm').format(t);
+  }
+
+  return DateFormat('yyyy年M月d日 HH:mm').format(t);
+}

lib/utils/toast_utils.dart

@@ -0,0 +1,37 @@
+import 'package:flutter/material.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+
+class ToastUtils {
+  static void _show({
+    required String msg,
+    Color backgroundColor = Colors.black87,
+    Color textColor = Colors.white,
+    ToastGravity gravity = ToastGravity.CENTER,
+    Toast toastLength = Toast.LENGTH_SHORT,
+  }) {
+    Fluttertoast.showToast(
+      msg: msg,
+      toastLength: toastLength,
+      gravity: gravity,
+      backgroundColor: backgroundColor,
+      textColor: textColor,
+      fontSize: 14.0,
+    );
+  }
+
+  static void success(String msg) {
+    _show(msg: msg, backgroundColor: Colors.green);
+  }
+
+  static void error(String msg) {
+    _show(msg: msg, backgroundColor: Colors.redAccent);
+  }
+
+  static void warning(String msg) {
+    _show(msg: msg, backgroundColor: Colors.orange);
+  }
+
+  static void info(String msg) {
+    _show(msg: msg, backgroundColor: Colors.grey[800]!);
+  }
+}

pubspec.lock

@@ -288,6 +288,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "4.1.2"
+  intl:
+    dependency: "direct main"
+    description:
+      name: intl
+      sha256: d6f56758b7d3014a48af9701c085700aac781a92a87a62b1333b46d8879661cf
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.19.0"
   io:
     dependency: transitive
     description:

pubspec.yaml

@@ -1 +1 @@
-name: sweet_chat_app
+name: sweet_chat_app