feat(call): 集成 RTM 消息处理通话事件

- 添加 dart:typed_data 和 agora_rtm 依赖包
- 实现 RTM 消息监听器注册功能
- 添加处理通话相关 RTM 消息的逻辑
- 支持接收和解析通话接受消息更新远端用户 UID
- 简化发送通话消息的逻辑并移除旧的 IMManager 方式

lib/controller/message/call_controller.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
 import 'dart:convert';
+import 'dart:typed_data';
 import 'package:agora_rtc_engine/agora_rtc_engine.dart';
+import 'package:agora_rtm/agora_rtm.dart';
 import 'package:audioplayers/audioplayers.dart';
 import 'package:dating_touchme_app/generated/assets.dart';
 import 'package:dating_touchme_app/im/im_manager.dart';
@@ -106,6 +108,50 @@ class CallController extends GetxController {
         await _callAudioPlayer.play(AssetSource(Assets.audioCall.replaceFirst('assets/', '')));
       }
     });
+    
+    // 注册 RTM 消息监听器，用于接收通话相关的 RTM 消息
+    _registerRtmMessageListener();
+  }
+  
+  /// 注册 RTM 消息监听器
+  void _registerRtmMessageListener() {
+    RTMManager.instance.onMessageEvent = (MessageEvent event) {
+      _handleRtmMessage(event);
+    };
+    print('✅ [CallController] RTM 消息监听器已注册');
+  }
+  
+  /// 处理 RTM 消息
+  void _handleRtmMessage(MessageEvent event) {
+    try {
+      // 解析消息内容
+      String messageText;
+      if (event.message is String) {
+        messageText = event.message as String;
+      } else if (event.message is Uint8List) {
+        messageText = utf8.decode(event.message as Uint8List);
+      } else {
+        messageText = event.message.toString();
+      }
+      
+      final messageData = json.decode(messageText) as Map<String, dynamic>;
+      print('📥 [CallController] 收到 RTM 消息: $messageData');
+      
+      // 处理通话消息
+      if (messageData['type'] == 'call_message') {
+        final event = messageData['event'] as String?;
+        if (event == 'accept') {
+          // 发起方收到 accept 消息，设置远端用户 UID
+          final uid = messageData['uid'];
+          if (uid != null) {
+            remoteUid.value = uid is int ? uid : int.tryParse(uid.toString());
+            print('📞 [CallController] 收到 accept 消息，设置 remoteUid: ${remoteUid.value}');
+          }
+        }
+      }
+    } catch (e) {
+      print('❌ [CallController] 处理 RTM 消息失败: $e');
+    }
   }
 
   /// 创建一对一RTC频道
@@ -432,33 +478,12 @@ class CallController extends GetxController {
     ChatController? chatController,
   }) async {
     // 如果提供了 chatController，使用它发送消息
-    if (chatController != null) {
-      return await chatController.sendCallMessage(
-        callType: callType,
-        callStatus: callStatus,
-        callDuration: callDuration,
-        channelId: channelId,
-      );
-    }
-
-    // 否则直接通过 IMManager 发送自定义消息
-    final callParams = <String, String>{
-      'callType': callType,
-      'callStatus': callStatus,
-    };
-    if (callDuration != null) {
-      callParams['callDuration'] = callDuration.toString();
-    }
-    if (channelId != null && channelId.isNotEmpty) {
-      callParams['channelId'] = channelId;
-    }
-
-    final message = await IMManager.instance.sendCustomMessage(
-      targetUserId,
-      'call',
-      callParams,
+    return await chatController!.sendCallMessage(
+      callType: callType,
+      callStatus: callStatus,
+      callDuration: callDuration,
+      channelId: channelId,
     );
-    return message != null;
   }
 
   /// 更新通话消息状态（使用modifyMessage修改现有消息）