feat(call): 添加远端用户UID管理和视频通话页面优化

- 在CallController中添加remoteUid用于跟踪远端用户
- 在通话开始和结束时清空远端用户UID状态
- 修改IMManager中通话状态判断逻辑，支持waitCalling状态
- 在RTCManager中集成CallController的remoteUid更新机制
- 重构VideoCallPage使用Obx监听远端用户变化
- 实现远端视频视图显示和本地视频视图切换逻辑
- 添加视频通话中的调试日志输出

lib/controller/message/call_controller.dart

@@ -80,6 +80,9 @@ class CallController extends GetxController {
   int _callDurationSeconds = 0;
   final RxInt callDurationSeconds = RxInt(0);
   
+  // 远端用户UID（用于显示远端视频）
+  final Rxn<int> remoteUid = Rxn<int>();
+  
   // 音频播放器（用于播放来电铃声）
   final AudioPlayer _callAudioPlayer = AudioPlayer();
   bool _isPlayingCallAudio = false;
@@ -169,6 +172,9 @@ class CallController extends GetxController {
         SmartDialog.showToast('已有通话正在进行中');
         return false;
       }
+      
+      // 清空之前的远端用户UID
+      remoteUid.value = null;
 
       print('📞 [CallController] 发起${callType == CallType.video ? "视频" : "语音"}通话，目标用户: $targetUserId');
 
@@ -266,6 +272,9 @@ class CallController extends GetxController {
       final callType = callTypeStr == 'video' ? CallType.video : CallType.voice;
 
       print('📞 [CallController] 接听${callType == CallType.video ? "视频" : "语音"}通话');
+      
+      // 清空之前的远端用户UID
+      remoteUid.value = null;
 
       // 创建通话会话
       final session = CallSession(
@@ -433,8 +442,9 @@ class CallController extends GetxController {
         );
       }
 
-      // 清理通话会话
+      // 清理通话会话和远端用户UID
       currentCall.value = null;
+      remoteUid.value = null;
 
       // TODO: 这里可以集成实际的通话SDK，结束通话
       // 例如：await RTCManager.instance.endCall();

lib/im/im_manager.dart

@@ -218,6 +218,7 @@ class IMManager {
             // 从消息扩展字段中解析用户信息并缓存
             for (var message in messages) {
               if (message.direction == MessageDirection.RECEIVE && message.onlineState) {
+
                 _parseUserInfoFromMessageExt(message);
                 // 检查发送者是否是当前正在聊天的用户，如果不是则显示弹框
                 // 只有在 APP 处于前台时才显示弹框，后台时显示本地通知
@@ -1455,7 +1456,7 @@ class IMManager {
         // 如果解析到通话信息，检查是否需要显示视频通话邀请弹框
         if (callInfo != null && callType != null && callStatus != null) {
           // 只处理视频通话且状态为 missed 或 calling 的消息（新邀请）
-          if ((callType == 'video' || callType == 'voice') && (callStatus == 'missed' || callStatus == 'calling')) {
+          if ((callType == 'video' || callType == 'voice') && (callStatus == 'waitCalling' || callStatus == 'calling')) {
             // 获取用户信息
             Map<String, dynamic>? attributes;
             try {

lib/pages/message/video_call_page.dart

@@ -320,19 +320,71 @@ class _VideoCallPageState extends State<VideoCallPage> {
     final callSession = _callController.currentCall.value;
     final isVideoCall = callSession != null && callSession.callType == CallType.video;
     
-    // 如果是视频通话，显示本地视频视图
-    if (isVideoCall && _localVideoViewController != null) {
-      Get.log('显示本地视频视图$_localVideoViewController');
-      return SizedBox(
-        width: double.infinity,
-        height: 1.sh,
-        child: AgoraVideoView(
-          controller: _localVideoViewController!,
-        ),
-      );
+    // 使用 Obx 监听远端用户 UID 的变化
+    if (isVideoCall) {
+      return Obx(() {
+        // 同时监听 CallController.remoteUid 和 RTCManager.remoteUsersNotifier
+        var remoteUid = _callController.remoteUid.value;
+        final remoteUsers = _rtcManager.remoteUsersNotifier.value; // 触发 Obx 监听
+        
+        print('📞 [VideoCallPage] Obx 重建，CallController.remoteUid: ${_callController.remoteUid.value}, remoteUsers: $remoteUsers, isVideoCall: $isVideoCall');
+        
+        // 如果 remoteUid 为空，尝试从 RTCManager 的远端用户列表中获取
+        if (remoteUid == null && remoteUsers.isNotEmpty) {
+          remoteUid = remoteUsers.first;
+          // 同步到 CallController
+          _callController.remoteUid.value = remoteUid;
+          print('📞 [VideoCallPage] 从 RTCManager.remoteUsersNotifier 获取到 remoteUid: $remoteUid');
+        }
+        
+        // 如果远端用户已加入，显示远端视频视图（对方画面）
+        if (remoteUid != null) {
+          final engine = _rtcManager.engine;
+          print('📞 [VideoCallPage] remoteUid 不为 null: $remoteUid, engine: ${engine != null}');
+          if (engine != null) {
+            print('📞 [VideoCallPage] 显示远端视频视图，UID：$remoteUid');
+            final remoteVideoViewController = VideoViewController(
+              rtcEngine: engine,
+              canvas: VideoCanvas(uid: remoteUid),
+            );
+            return SizedBox(
+              width: double.infinity,
+              height: 1.sh,
+              child: AgoraVideoView(
+                controller: remoteVideoViewController,
+              ),
+            );
+          } else {
+            print('⚠️ [VideoCallPage] engine 为 null，无法显示远端视频');
+          }
+        } else {
+          print('⚠️ [VideoCallPage] remoteUid 为 null，无法显示远端视频');
+        }
+        
+        // 如果没有远端视频，显示本地视频视图（自己的画面）
+        if (_localVideoViewController != null) {
+          print('📞 [VideoCallPage] 显示本地视频视图');
+          return SizedBox(
+            width: double.infinity,
+            height: 1.sh,
+            child: AgoraVideoView(
+              controller: _localVideoViewController!,
+            ),
+          );
+        }
+        
+        // 如果本地视频也没有，显示模糊的头像背景
+        print('📞 [VideoCallPage] 显示头像背景');
+        return _buildAvatarBackground();
+      });
     }
     
-    // 否则显示模糊的头像背景
+    // 非视频通话，显示模糊的头像背景
+    return _buildAvatarBackground();
+  }
+  
+  /// 构建头像背景
+  Widget _buildAvatarBackground() {
     return SizedBox(
       width: double.infinity,
       height: 1.sh,

lib/rtc/rtc_manager.dart

@@ -7,6 +7,7 @@ import 'package:flutter/foundation.dart';
 import 'package:get/get.dart';
 
 import '../controller/discover/room_controller.dart';
+import '../controller/message/call_controller.dart';
 import '../pages/discover/live_room_page.dart';
 
 enum RTCType {
@@ -170,6 +171,18 @@ class RTCManager {
                   final roomController = Get.find<RoomController>();
                   await roomController.fetchRtcChannelDetail(channelId);
                 }
+              } else if (type == RTCType.call) {
+                // 通话场景：通知 CallController 远端用户已加入
+                print('📞 [RTCManager] 通话场景：检测到用户加入，UID：$remoteUid');
+                if (Get.isRegistered<CallController>()) {
+                  final callController = Get.find<CallController>();
+                  callController.remoteUid.value = remoteUid;
+                  print('✅ [RTCManager] 通话场景：已设置 CallController.remoteUid = $remoteUid');
+                } else {
+                  print('⚠️ [RTCManager] CallController 未注册，无法设置 remoteUid');
+                }
+              } else {
+                print('⚠️ [RTCManager] 未知的 RTC 类型：$type');
               }
 
               if (onUserJoined != null) {
@@ -540,6 +553,15 @@ class RTCManager {
     if (_remoteUserIds.contains(remoteUid)) return;
     _remoteUserIds.add(remoteUid);
     remoteUsersNotifier.value = List<int>.unmodifiable(_remoteUserIds);
+    
+    // 如果是通话场景，同时更新 CallController 的 remoteUid
+    if (type == RTCType.call && Get.isRegistered<CallController>()) {
+      final callController = Get.find<CallController>();
+      if (callController.remoteUid.value == null) {
+        callController.remoteUid.value = remoteUid;
+        print('📞 [RTCManager] _handleRemoteUserJoined: 已同步 remoteUid 到 CallController: $remoteUid');
+      }
+    }
   }
 
   void _handleRemoteUserOffline(int remoteUid) {