feat(live): 实现礼物弹窗用户选择与礼物展示功能

- 将 LiveGiftPopup 从 StatelessWidget 改为 StatefulWidget 以支持状态管理
- 新增用户选择逻辑，支持单个用户选中与全选/取消全选功能
- 使用 Obx 监听 RoomController 中的 RTC 频道详情动态构建用户列表
- 过滤掉当前用户自身，最多显示三个可送礼用户
- 用户头像使用 CachedNetworkImage 加载，支持加载占位与错误处理
- 礼物区域支持分页展示，每页最多 8 个礼物（2 行 4 列）
- 支持 Map 和 GiftProductModel 两种数据结构的礼物列表渲染
- LiveRoomGiftItem 组件适配网络图片加载与文本截断显示
- 动态获取并显示礼物名称与价格（单位：支）
- 优化空礼物列表提示与 UI 布局细节

lib/controller/discover/room_controller.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 
 import 'package:agora_rtc_engine/agora_rtc_engine.dart';
 import 'package:dating_touchme_app/controller/global.dart';
+import 'package:dating_touchme_app/controller/live/svga_player_manager.dart';
 import 'package:dating_touchme_app/model/live/gift_product_model.dart';
 import 'package:dating_touchme_app/model/rtc/rtc_channel_data.dart';
 import 'package:dating_touchme_app/model/rtc/rtc_channel_detail.dart';
@@ -331,9 +332,76 @@ class RoomController extends GetxController {
     }
   }
 
+  /// 赠送礼物
+  Future<void> sendGift({
+    required GiftProductModel gift,
+    String? targetUserId,
+  }) async {
+    try {
+      // 添加到本地播放队列
+      final svgaManager = SvgaPlayerManager.instance;
+      svgaManager.addToQueue(
+        SvgaAnimationItem(
+          svgaFile: gift.svgaFile,
+          targetUserId: targetUserId,
+          senderUserId: GlobalData().userId ?? GlobalData().userData?.id,
+          giftProductId: gift.productId,
+        ),
+      );
+      print('✅ 礼物已添加到播放队列: ${gift.productTitle}');
+
+      // 发送 RTM 消息通知其他用户
+      final channelId = RTCManager.instance.currentChannelId;
+      if (channelId != null && channelId.isNotEmpty) {
+        final messageData = {
+          'type': 'gift',
+          'svgaFile': gift.svgaFile,
+          'giftProductId': gift.productId,
+          'targetUserId': targetUserId,
+          'senderUserId': GlobalData().userId ?? GlobalData().userData?.id,
+          'senderNickName': GlobalData().userData?.nickName ?? '',
+        };
+
+        await RTMManager.instance.publishChannelMessage(
+          channelName: channelId,
+          message: json.encode(messageData),
+        );
+        print('✅ 礼物消息已发送: ${gift.productTitle}');
+      }
+    } catch (e) {
+      print('❌ 发送礼物失败: $e');
+      SmartDialog.showToast('发送礼物失败');
+    }
+  }
+
   /// 接收RTC消息
   Future<void> receiveRTCMessage(Map<String, dynamic> message) async {
-    if (message['type'] == 'join_chat') {
+    if (message['type'] == 'gift') {
+      // 处理礼物消息
+      try {
+        final svgaFile = message['svgaFile']?.toString() ?? '';
+        final giftProductId = message['giftProductId']?.toString();
+        final targetUserId = message['targetUserId']?.toString();
+        final senderUserId = message['senderUserId']?.toString();
+        final senderNickName = message['senderNickName']?.toString() ?? '';
+
+        if (svgaFile.isNotEmpty) {
+          // 添加到播放队列
+          final svgaManager = SvgaPlayerManager.instance;
+          svgaManager.addToQueue(
+            SvgaAnimationItem(
+              svgaFile: svgaFile,
+              targetUserId: targetUserId,
+              senderUserId: senderUserId,
+              giftProductId: giftProductId,
+            ),
+          );
+          print('✅ 收到礼物消息，已添加到播放队列: $senderNickName 赠送了礼物');
+        }
+      } catch (e) {
+        print('❌ 处理礼物消息失败: $e');
+      }
+    } else if (message['type'] == 'join_chat') {
       final response = await _networkService.rtcApi
           .getDatingRtcChannelUserDetail(
             rtcChannel.value!.channelId,

lib/widget/live/live_gift_popup.dart

@@ -2,10 +2,12 @@ import 'package:cached_network_image/cached_network_image.dart';
 import 'package:dating_touchme_app/controller/discover/room_controller.dart';
 import 'package:dating_touchme_app/controller/global.dart';
 import 'package:dating_touchme_app/generated/assets.dart';
+import 'package:dating_touchme_app/model/live/gift_product_model.dart';
 import 'package:dating_touchme_app/model/rtc/rtc_channel_detail.dart';
 import 'package:dating_touchme_app/widget/live/live_room_gift_item.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
 import 'package:flutter_swiper_null_safety/flutter_swiper_null_safety.dart';
 import 'package:get/get.dart';
 import 'package:tdesign_flutter/tdesign_flutter.dart';
@@ -29,34 +31,71 @@ class LiveGiftPopup extends StatefulWidget {
 }
 
 class _LiveGiftPopupState extends State<LiveGiftPopup> {
-  // 选中的用户ID集合
-  final Set<String> _selectedUserIds = <String>{};
+  // 选中的用户ID（单选）
+  String? _selectedUserId;
 
-  // 切换用户选中状态
+  // 切换用户选中状态（单选模式）
   void _toggleUserSelection(String userId) {
     setState(() {
-      if (_selectedUserIds.contains(userId)) {
-        _selectedUserIds.remove(userId);
+      if (_selectedUserId == userId) {
+        // 如果点击的是已选中的用户，则取消选中
+        _selectedUserId = null;
       } else {
-        _selectedUserIds.add(userId);
+        // 否则选中该用户（自动取消之前的选中）
+        _selectedUserId = userId;
       }
     });
   }
 
-  // 全选/取消全选
-  void _toggleSelectAll(List<RtcSeatUserInfo> users) {
-    setState(() {
-      if (_selectedUserIds.length == users.length) {
-        // 如果已全选，则取消全选
-        _selectedUserIds.clear();
-      } else {
-        // 否则全选
-        _selectedUserIds.clear();
-        for (var user in users) {
-          _selectedUserIds.add(user.userId);
-        }
-      }
-    });
+  // 处理赠送礼物
+  Future<void> _handleSendGift() async {
+    // 检查是否选中了礼物
+    final activeIndex = widget.activeGift.value;
+    if (activeIndex == null ||
+        activeIndex < 0 ||
+        activeIndex >= widget.giftList.length) {
+      SmartDialog.showToast('请先选择礼物');
+      return;
+    }
+
+    // 检查是否选中了接收用户
+    if (_selectedUserId == null || _selectedUserId!.isEmpty) {
+      SmartDialog.showToast('请先选择接收礼物的用户');
+      return;
+    }
+
+    // 获取选中的礼物
+    final giftItem = widget.giftList[activeIndex];
+    GiftProductModel? gift;
+
+    if (giftItem is GiftProductModel) {
+      gift = giftItem;
+    } else if (giftItem is Map) {
+      // 如果是 Map，需要从 RoomController 的 giftProducts 中查找
+      SmartDialog.showToast('礼物数据格式错误');
+      return;
+    } else {
+      SmartDialog.showToast('礼物数据格式错误');
+      return;
+    }
+
+    // 获取 RoomController
+    final roomController = Get.isRegistered<RoomController>()
+        ? Get.find<RoomController>()
+        : null;
+
+    if (roomController == null) {
+      SmartDialog.showToast('房间控制器未初始化');
+      return;
+    }
+
+    // 发送礼物
+    await roomController.sendGift(gift: gift, targetUserId: _selectedUserId);
+
+    // 关闭弹窗
+    SmartDialog.dismiss();
+
+    SmartDialog.showToast('礼物已送出');
   }
 
   @override
@@ -141,7 +180,7 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
                 ...displayUsers.asMap().entries.map((entry) {
                   final index = entry.key;
                   final user = entry.value;
-                  final isSelected = _selectedUserIds.contains(user.userId);
+                  final isSelected = _selectedUserId == user.userId;
                   return GestureDetector(
                     onTap: () => _toggleUserSelection(user.userId),
                     child: Padding(
@@ -228,27 +267,6 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
                 }),
               ],
             ),
-            // 如果列表为空，不显示全选按钮
-            if (displayUsers.isNotEmpty)
-              GestureDetector(
-                onTap: () => _toggleSelectAll(displayUsers),
-                child: Container(
-                  width: 63.w,
-                  height: 30.w,
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.all(Radius.circular(30.w)),
-                    color: const Color.fromRGBO(117, 98, 249, 1),
-                  ),
-                  child: Center(
-                    child: Text(
-                      _selectedUserIds.length == displayUsers.length
-                          ? "取消全选"
-                          : "全选",
-                      style: TextStyle(fontSize: 13.w, color: Colors.white),
-                    ),
-                  ),
-                ),
-              ),
           ],
         ),
       );
@@ -371,49 +389,27 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
             builder: (context, num, _) {
               return Row(
                 children: [
-                  _buildAdjustButton(
-                    label: "-",
-                    enabled: num > 1,
-                    onTap: () {
-                      if (widget.giftNum.value <= 1) return;
-                      widget.giftNum.value -= 1;
-                    },
-                  ),
-                  SizedBox(
-                    width: 23.w,
-                    child: Center(
-                      child: Text(
-                        "$num",
-                        style: TextStyle(fontSize: 13.w, color: Colors.white),
+                  GestureDetector(
+                    onTap: () => _handleSendGift(),
+                    child: Container(
+                      width: 63.w,
+                      height: 30.w,
+                      decoration: BoxDecoration(
+                        borderRadius: BorderRadius.all(Radius.circular(30.w)),
+                        gradient: const LinearGradient(
+                          begin: Alignment.centerLeft,
+                          end: Alignment.centerRight,
+                          colors: [
+                            Color.fromRGBO(61, 138, 224, 1),
+                            Color.fromRGBO(131, 89, 255, 1),
+                          ],
+                        ),
                       ),
-                    ),
-                  ),
-                  _buildAdjustButton(
-                    label: "+",
-                    enabled: true,
-                    onTap: () {
-                      widget.giftNum.value += 1;
-                    },
-                  ),
-                  SizedBox(width: 9.w),
-                  Container(
-                    width: 63.w,
-                    height: 30.w,
-                    decoration: BoxDecoration(
-                      borderRadius: BorderRadius.all(Radius.circular(30.w)),
-                      gradient: const LinearGradient(
-                        begin: Alignment.centerLeft,
-                        end: Alignment.centerRight,
-                        colors: [
-                          Color.fromRGBO(61, 138, 224, 1),
-                          Color.fromRGBO(131, 89, 255, 1),
-                        ],
-                      ),
-                    ),
-                    child: Center(
-                      child: Text(
-                        "赠送",
-                        style: TextStyle(fontSize: 13.w, color: Colors.white),
+                      child: Center(
+                        child: Text(
+                          "赠送",
+                          style: TextStyle(fontSize: 13.w, color: Colors.white),
+                        ),
                       ),
                     ),
                   ),