巡乐会抽奖接口提交.-盲盒转盘抽奖方法重构。优化查询速度

application/api/model/BlindBoxTurntableGift.php

@@ -63,7 +63,6 @@ class BlindBoxTurntableGift extends Model
         $result_data = [
             'title' => $box['name'],
             'rule_url' => get_system_config_value('web_site')."/api/Page/get_gift_box_rule?box_id=".$box["id"],
-//            'rule' => $ext['introd'],
             'box_price' => $box_gift['gift_price'],
             'is_xlh' => $is_xlh,
             'xlh_data' => $xlh,
@@ -71,19 +70,67 @@ class BlindBoxTurntableGift extends Model
         ];
         return ['code' => 1, 'msg' => '获取成功', 'data' => $result_data];
     }
+
     /*
      * 抽奖
      */
-    public function draw_gift($gift_bag_id, $user_id, $gift_user_ids,$num=1,$room_id=0,$heart_id=0){
+    public function draw_gift($gift_bag_id, $user_id, $gift_user_ids,$num=1,$room_id=0,$heart_id=0)
-        //获取盲盒配置
+    {
-        $bag_data = db::name("vs_gift_bag")->field('id,name,ext,periods')->where('id',$gift_bag_id)->find();
+        // 合并配置查询
+        $bag_data = db::name("vs_gift_bag")
+            ->field('id,name,ext')
+            ->where('id',$gift_bag_id)
+            ->find();
+
+        if (!$bag_data) {
+            return ['code' => 0, 'msg' => '盲盒配置不存在', 'data' => null];
+        }
+
         $ext = json_decode($bag_data['ext'],true);
-        $bag_gift = db::name("vs_gift")->where(['gid'=>$ext['gift_id']])->find();// 获取盲盒信息
+
+        // 合并盲盒和礼物信息查询
+        $bag_gift = db::name("vs_gift")
+            ->where(['gid'=>$ext['gift_id']])
+            ->find();
+
+        if (!$bag_gift) {
+            return ['code' => 0, 'msg' => '盲盒礼物不存在', 'data' => null];
+        }
+
+        // 合并巡乐会配置查询
+        $xlh_box = db::name('vs_gift_bag')
+            ->where('id',13)
+            ->find();
+
+        $xlh_ext = $xlh_box ? json_decode($xlh_box['ext'],true) : [];
+
+        $xlh_is_piao_ping = 0;
+
+        // 处理收礼用户数组（多个）
         $toarray = explode(',',$gift_user_ids);
-        $room = db::name('vs_room')->field('id,xlh_periods,xlh_periods_num,is_open_blind_box_turntable')->where(['id'=>$room_id])->find();
+
-        //判断是否有足够的金币
+        // 合并房间信息查询
-        $user_waller = db::name('user_wallet')->where(['user_id'=>$user_id])->find();
+        $room = db::name('vs_room')
-        //抽奖总消耗金币
+            ->field('id,room_name,xlh_periods,xlh_periods_num,is_open_blind_box_turntable')
+            ->where(['id'=>$room_id])
+            ->find();
+
+        if (!$room) {
+            return ['code' => 0, 'msg' => '房间不存在', 'data' => null];
+        }
+
+        $this_xlh_periods_num = $room['xlh_periods_num'];//本期当前抽奖次数（巡乐会出发条件）
+
+        // 判断是否有足够的金币
+        $user_waller = db::name('user_wallet')
+            ->where(['user_id'=>$user_id])
+            ->find();
+
+        if (!$user_waller) {
+            return ['code' => 0, 'msg' => '用户钱包不存在', 'data' => null];
+        }
+
+        // 抽奖总消耗金币
         $bag_gift_price = $bag_gift['gift_price'] * $num;
         if ($user_waller['coin'] < $bag_gift_price) {
             return ['code' => 0, 'msg' => '用户金币不足', 'data' => null];
@@ -91,9 +138,94 @@ class BlindBoxTurntableGift extends Model
         if ($room['is_open_blind_box_turntable'] != 1) {
             return ['code' => 0, 'msg' => '该房间未开启盲盒转盘', 'data' => null];
         }
+
+        // 预计算抽奖结果，减少数据库事务中的查询
+        // 计算期数和抽奖次数
+        // 合并奖池总抽奖次数和房间奖池信息查询
+        $room_pan_info = db::name("vs_gift_bag_detail")
+            ->alias('a')
+            ->join('vs_room_pan b', 'b.gift_bag_id = a.gift_bag_id AND b.room_id = ' . $room_id)
+            ->where(['a.gift_bag_id' => $gift_bag_id])
+            ->field('SUM(a.quantity) as total_quantity, SUM(b.remaining_number) as total_remaining, b.periods')
+            ->find();
+
+        $total_quantity = $room_pan_info['total_quantity'] ?: 0;
+        $total_remaining = $room_pan_info['total_remaining'] ?: 0;
+        $periods = $room_pan_info['periods'] ?: 0;
+
+        // 本期当前第多少次后抽奖 总的抽奖次数- 剩余数量
+        $total_draw_times = $total_quantity - $total_remaining;
+
+        // 预计算所有抽奖结果
+        $precomputed_results = [];
+        $current_draw_times = $total_draw_times;
+        $current_periods = $periods;
+        $current_xlh_periods_num = $this_xlh_periods_num;
+
+        // 获取所有可用礼物用于预计算
+        $available_gifts = $this->get_available_gifts_for_precompute($gift_bag_id, $room_id, $current_draw_times);
+
+        if (empty($available_gifts)) {
+            return ['code' => 0, 'msg' => '当前盲盒无可用礼物', 'data' => null];
+        }
+
+        // 预计算所有抽奖结果
+        $should_reset_all_gifts = false; // 标记是否需要重置所有礼物
+        foreach ($toarray as $gift_user_id) {
+            if($user_id == $gift_user_id){
+                return ['code' => 0, 'msg' => "收礼人不能包含自己", 'data' => null];
+            }
+
+            for($i = 0; $i < $num; $i++){
+                // 使用加权随机算法预计算单次抽奖结果
+                $draw_result = $this->precompute_single_draw($available_gifts);
+
+                if (!$draw_result) {
+                    return ['code' => 0, 'msg' => '预计算抽奖失败', 'data' => null];
+                }
+
+                $precomputed_results[] = [
+                    'gift_user_id' => $gift_user_id,
+                    'gift_bag_detail' => $draw_result['gift_bag_detail'],
+                    'gift' => $draw_result['gift'],
+                    'draw_times' => $current_draw_times,
+                    'periods' => $current_periods
+                ];
+
+                $current_draw_times++;
+
+                // 判断巡乐会飘屏判断
+                $current_xlh_periods_num++;
+                if(!empty($xlh_ext) && $xlh_ext['inlet_bag_id'] == $gift_bag_id && $current_xlh_periods_num == $xlh_ext['open_condition']['waiting_start_num']){
+                    $xlh_is_piao_ping = 1;
+                }
+                if(!empty($xlh_ext) && $xlh_ext['inlet_bag_id'] == $gift_bag_id && $current_xlh_periods_num == $xlh_ext['open_condition']['start_num']){
+                    $xlh_is_piao_ping = 2;
+                }
+
+                // 更新可用礼物数量（模拟数据库更新）
+                $total_remaining_after_update = 0;
+                foreach ($available_gifts as &$gift) {
+                    if ($gift['id'] == $draw_result['gift_bag_detail']['id']) {
+                        $gift['remaining_number']--;
+                    }
+
+                    // 计算更新后的总剩余数量
+                    $total_remaining_after_update += $gift['remaining_number'];
+                }
+
+                // 检查是否需要重置所有礼物
+                if ($total_remaining_after_update <= 0) {
+                    $should_reset_all_gifts = true;
+                    $current_periods++; // 增加期数
+                }
+            }
+        }
+
+        // 开始数据库事务处理
         db::startTrans();
         try{
-            //盲盒转盘抽奖记录
+            // 盲盒转盘抽奖记录
             $box_turntable_log = db::name('vs_blind_box_turntable_log')->insertGetId([
                 'user_id' => $user_id,
                 'gift_bag_id' => $gift_bag_id,
@@ -106,57 +238,105 @@ class BlindBoxTurntableGift extends Model
                 db::rollback();
                 return ['code' => 0, 'msg' => '添加盲盒转盘记录失败', 'data' => null];
             }
-            foreach ($toarray as $gift_user_id){
-                if($user_id == $gift_user_id){
-                    db::rollback();
-                    return ['code' => 0, 'msg' => "收礼人不能包含自己", 'data' => null];
-                }
-                for($i = 0; $i < $num; $i++){
-                    $reslut_draw_gift_data = $this->draw_gift_one($gift_bag_id, $user_id, $gift_user_id,$bag_gift['gift_price'],$room_id,$box_turntable_log);
-                    if($reslut_draw_gift_data['code'] != 1){
-                        db::rollback();
-                        return ['code' => 0, 'msg' => $reslut_draw_gift_data['msg'], 'data' => null];
-                    }
-                    $reslut_draw_gift[] = $reslut_draw_gift_data['data'];
-                }
-            }
-            $reslut_gift = [];
-            $reslut_data = [];
-            foreach ($reslut_draw_gift as $key => $value) {
-                $gift_user_id = $value['gift_user_id'];
-                $gift_id = $value['gift_id'];
 
-                // 以 gift_user_id 和 gift_id 作为键进行分组
+            // 处理预计算的抽奖结果
-                $group_key = $gift_user_id . '_' . $gift_id;
+            $result_draw_gift = [];
+            $gift_counts = []; // 统计每个礼物的数量
+            $gift_user_counts = []; // 统计每个用户每个礼物的数量
 
-                if (!isset($reslut_gift[$group_key])) {
+            foreach ($precomputed_results as $result) {
-                    $reslut_gift[$group_key] = [
+                $gift_user_id = $result['gift_user_id'];
+                $gift_bag_detail = $result['gift_bag_detail'];
+                $gift = $result['gift'];
+
+                // 构造返回数据
+                $result_data = [
+                    'user_id' => $user_id,
+                    'gift_user_id' => $gift_user_id,
+                    'gift_id' => $gift_bag_detail['foreign_id'],
+                    'gift_price' => $gift['gift_price'],
+                    'is_public_screen' => $gift['is_public_screen'],
+                    'periods' => $result['periods'],
+                ];
+                $result_draw_gift[] = $result_data;
+
+                // 统计礼物数量
+                $gift_id = $gift_bag_detail['foreign_id'];
+                if (!isset($gift_counts[$gift_id])) {
+                    $gift_counts[$gift_id] = [
+                        'gift_id' => $gift_id,
+                        'count' => 0,
+                        'gift_price' => $gift['gift_price']
+                    ];
+                }
+                $gift_counts[$gift_id]['count']++;
+
+                // 统计用户礼物数量
+                $user_gift_key = $gift_user_id . '_' . $gift_id;
+                if (!isset($gift_user_counts[$user_gift_key])) {
+                    $gift_user_counts[$user_gift_key] = [
                         'gift_user_id' => $gift_user_id,
                         'gift_id' => $gift_id,
-                        'count' => 1,
+                        'count' => 0,
-                        'gift_price' => $value['gift_price']
+                        'gift_price' => $gift['gift_price']
                     ];
-                } else {
-                    $reslut_gift[$group_key]['count']++;
                 }
-                if (!isset($reslut_data[$gift_id])) {
+                $gift_user_counts[$user_gift_key]['count']++;
-                    $reslut_data[$gift_id] = [
+
-                        'gift_id' => $gift_id,
+                // 处理礼包发放记录表
-                        'count' => 1
+                $data = [];
-                    ];
+                $data['user_id'] = $user_id;
-                 }else {
+                $data['gift_user_id'] = $gift_user_id;
-                    $reslut_data[$gift_id]['count']++;
+                $data['parent_id'] = $box_turntable_log;
+                $data['gift_bag_id'] = $gift_bag_id;
+                $data['gift_id'] = $gift_bag_detail['foreign_id'];
+                $data['periods'] = $result['periods'];
+                $data['room_id'] = $room_id;
+                $data['gift_price'] = $gift['gift_price'];
+                $data['bag_price'] = $bag_gift['gift_price'];
+                $data['createtime'] = time();
+                $insert_result = db::name("vs_gift_bag_receive_log")->insert($data);
+                if(!$insert_result){
+                    db::rollback();
+                    return ['code' => 0, 'msg' => '插入礼包发放记录失败', 'data' => []];
+                }
+
+                // 减去盲盒包礼物数量
+                $ret = db::name("vs_room_pan")
+                    ->where(['room_id'=>$room_id,'gift_bag_detail_id'=>$gift_bag_detail['id']])
+                    ->setDec('remaining_number',1);
+
+                if(!$ret){
+                    db::rollback();
+                    return ['code' => 0, 'msg' => '更新礼物剩余数量失败', 'data' => []];
                 }
             }
-            $reslut_gift = array_values($reslut_gift);
+
-            foreach ($reslut_gift as $key => $value) {
+            // 处理奖池重置操作
+            if ($should_reset_all_gifts) {
+                // 重置奖池中所有礼物数量
+                db::name("vs_room_pan")
+                    ->where(['room_id'=>$room_id,'gift_bag_id'=>$gift_bag_id])
+                    ->update([
+                        'remaining_number' => db::raw('(SELECT quantity FROM fa_vs_gift_bag_detail WHERE id = fa_vs_room_pan.gift_bag_detail_id)'),
+                        'periods' => $current_periods
+                    ]);
+
+                // 更新总期数
+                db::name("vs_gift_bag")
+                    ->where('id', $gift_bag_id)
+                    ->setInc('periods');
+            }
+
+            // 批量插入盲盒转盘结果记录
+            foreach ($gift_user_counts as $user_gift) {
                 $ret = db::name('vs_blind_box_turntable_results_log')->insert([
                     'tid' => $box_turntable_log,
-                    'gift_user_id' => $value['gift_user_id'],
+                    'gift_user_id' => $user_gift['gift_user_id'],
-                    'gift_id' => $value['gift_id'],
+                    'gift_id' => $user_gift['gift_id'],
-                    'count' => $value['count'],
+                    'count' => $user_gift['count'],
-                    'gift_price' => $value['gift_price'],
+                    'gift_price' => $user_gift['gift_price'],
-                    'all_gift_price' => $value['gift_price'] * $value['count'],
+                    'all_gift_price' => $user_gift['gift_price'] * $user_gift['count'],
                     'createtime' => time(),
                     'heart_id' => $heart_id
                 ]);
@@ -165,14 +345,15 @@ class BlindBoxTurntableGift extends Model
                     return ['code' => 0, 'msg' => '添加盲盒转盘结果记录失败', 'data' => null];
                 }
             }
-            //扣除抽奖消耗的金币
+
-            //扣除用户金币并记录日志
+            // 扣除抽奖消耗的金币
+            // 扣除用户金币并记录日志
             $wallet_update = model('GiveGift')->change_user_cion_or_earnings_log($user_id,$bag_gift_price,$room_id,1,10,'盲盒转盘抽奖消耗');
             if(!$wallet_update){
                 Db::rollback();
                 return ['code' => 0, 'msg' => '扣除用户金币失败', 'data' => null];
             }
-            //用户财富等级更新
+            // 用户财富等级更新
             $user_level = model('Level')->user_level_data_update($user_id,$bag_gift_price,1,$room_id);
             if(!$user_level){
                 Db::rollback();
@@ -184,132 +365,16 @@ class BlindBoxTurntableGift extends Model
             db::rollback();
             return V(0,$e->getMessage());
         }
-        //巡乐会
+
-        $xlh_box = db::name('vs_gift_bag')->where('id',13)->find();
+        // 巡乐会
-        $xlh_ext = json_decode($xlh_box['ext'],true);
         $xlh = [];
-        if($xlh_ext['inlet_bag_id'] == $bag_data['id']){
+        if(!empty($xlh_ext) && $xlh_ext['inlet_bag_id'] == $gift_bag_id){
-            $xlh['waiting_start_num'] = $xlh_ext['open_condition']['waiting_start_num'];//等待开奖次数
+            // 巡乐会飘屏
-            $xlh['start_num'] = $xlh_ext['open_condition']['start_num'];//开始开奖次数
+            db::name("vs_room")->where('id',$room_id)->setInc('xlh_periods_num',$num);//加巡乐会条件次数
-            //当前抽奖次数
+            if($xlh_is_piao_ping == 1){
-            $xlh['current_num'] = db::name('vs_room')->where(['id'=>$room_id])->value('xlh_periods_num');
+                // 即将开始推送飘屏
-            //状态
+                $text = $room['room_name']."的巡乐会即将开始，请大家尽快参与哦!";
-            if($xlh['current_num'] >= $xlh_ext['open_condition']['start_num']){
+                // 推送礼物横幅
-                $xlh['status'] = 1;//状态 1:巡乐会开始 2:即将开始开始 0:等待开始
-            } elseif($xlh['current_num'] >= $xlh_ext['open_condition']['waiting_start_num'] && $xlh['current_num'] < $xlh_ext['open_condition']['start_num']){
-                $xlh['status'] = 2;//状态 1:巡乐会开始 2:即将开始开始 0:等待开始
-            }else{
-                $xlh['status'] = 0;
-            }
-            //推送
-            $text = [
-                'xlh_data' => $xlh,
-                'text' => ""
-            ];
-            //聊天室推送系统消息
-            model('Chat')->sendMsg(1056,$room_id,$text);
-        }
-        $reslut = [];
-        $reslut['blind_box_turntable_id'] = $box_turntable_log;
-        $reslut['reslut_list'] = array_values($reslut_data);
-        return V(1,"成功", $reslut);
-    }
-    /*
-     * 单人单次抽奖
-     */
-    public function draw_gift_one($gift_bag_id, $user_id, $gift_user_id,$gift_price,$room_id=0,$box_turntable_log=0){
-        //奖池总的抽奖次数
-        $total_quantity  = db::name("vs_gift_bag_detail")->where(['gift_bag_id' => $gift_bag_id])->sum('quantity');
-        $room_pan = db::name("vs_room_pan")->where(['room_id'=>$room_id,'gift_bag_id'=>$gift_bag_id])->field('remaining_number,periods')->find();
-        $total_remaining = $room_pan['remaining_number'];
-        $periods = $room_pan['periods'];
-        //本期当前第多少次后抽奖 总的抽奖次数- 剩余数量
-        $total_draw_times = $total_quantity - $total_remaining;
-        //随机获取一个礼物
-        $where = [
-            'a.gift_bag_id' => $gift_bag_id,
-            'a.quantity' => ['>',0],
-            'b.remaining_number' => ['>',0],
-            'b.room_id' => $room_id,
-            'a.weight' => ['<=', $total_draw_times],
-        ];
-        // 使用闭包条件来处理复杂的 weight 逻辑
-//        $where['a.weight'] = ['exp', Db::raw('= 0 OR a.weight < '.$total_draw_times)];
-        // 优化：基于剩余数量的加权随机选择
-        $gift_bag_details = db::name("vs_gift_bag_detail")
-            ->field('a.id,a.quantity,b.remaining_number,a.weight,a.foreign_id')
-            ->alias('a')
-            ->join('vs_room_pan b','b.gift_bag_detail_id = a.id','left')
-            ->where($where)
-            ->select();
-        if (empty($gift_bag_details)) {
-            return ['code' => 0, 'msg' => '当前盲盒无可用礼物', 'data' => []];
-        }
-        // 实现加权随机算法：剩余数量越多，被抽中的概率越大
-        $remaining = 0;
-        foreach ($gift_bag_details as $gift) {
-            $remaining += $gift['remaining_number'];
-        }
-        $rand_value = mt_rand(1, $remaining);
-        $current_sum = 0;
-        $gift_bag_detail = null;
-        foreach ($gift_bag_details as $gift) {
-            if($gift['remaining_number'] <= 0){
-                continue;
-            }
-            $current_sum += $gift['remaining_number'];
-            if ($rand_value <= $current_sum) {
-                $gift_bag_detail = $gift;
-                break;
-            }
-        }
-        if($gift_bag_detail){
-            //获取开出礼物的信息
-            $gift = db::name("vs_gift")->where(['gid'=>$gift_bag_detail['foreign_id']])->find();
-            //处理礼包发放记录表
-            $data = [];
-            $data['user_id'] = $user_id;
-            $data['gift_user_id'] = $gift_user_id;
-            $data['parent_id'] = $box_turntable_log;
-            $data['gift_bag_id'] = $gift_bag_id;
-            $data['gift_id'] = $gift_bag_detail['foreign_id'];
-            $data['periods'] = $periods;
-            $data['room_id'] = $room_id;
-            $data['gift_price'] = $gift['gift_price'];
-            $data['bag_price'] = $gift_price;
-            $data['createtime'] = time();
-            $result = db::name("vs_gift_bag_receive_log")->insert($data);
-            if(!$result){
-                return ['code' => 0, 'msg' => '失败,', 'data' => []];
-            }
-            //减去盲盒包礼物数量
-//            $ret = db::name("vs_gift_bag_detail")->where('id',$gift_bag_detail['id'])->setDec('remaining_number');
-            $ret = db::name("vs_room_pan")->where(['room_id'=>$room_id,'gift_bag_detail_id'=>$gift_bag_detail['id']])->setDec('remaining_number',1);
-            if(!$ret){
-                return ['code' => 0, 'msg' => '失败.', 'data' => []];
-            }
-            //判断剩余数量是否为0 为0重置，进入下一期
-            $gift_bag_num = db::name("vs_room_pan")->where(['room_id'=>$room_id,'gift_bag_id'=>$gift_bag_id])->sum('remaining_number');
-            if($gift_bag_num <= 0){
-                db::name("vs_gift_bag")->where('id',$gift_bag_id)->setInc('periods');
-                db::name("vs_room_pan")->where(['room_id'=>$room_id,'gift_bag_id'=>$gift_bag_id])->setInc('periods');
-                db::name("vs_room_pan")->where(['room_id'=>$room_id,'gift_bag_id'=>$gift_bag_id])->update(
-                    ['remaining_number' => db::raw('(SELECT quantity FROM fa_vs_gift_bag_detail WHERE id = fa_vs_room_pan.gift_bag_detail_id)')]);
-            }
-        }else{
-            return ['code' => 0, 'msg' => '失败!', 'data' => []];
-        }
-        //巡乐会飘屏
-        $xlh_box = db::name('vs_gift_bag')->where('id',13)->find();
-        $xlh_ext = json_decode($xlh_box['ext'],true);
-        if($xlh_ext['inlet_bag_id'] == $gift_bag_id){
-            db::name("vs_room")->where('id',$room_id)->setInc('xlh_periods_num');//加巡乐会条件次数
-            $room = Db::name('vs_room')->field('room_name,xlh_periods,xlh_periods_num')->where(['id' => $room_id, 'apply_status' => 2])->find();
-            if($room['xlh_periods_num'] == $xlh_ext['open_condition']['waiting_start_num']){
-                $room_name = Db::name('vs_room')->where(['id' => $room_id, 'apply_status' => 2])->value('room_name');
-                //即将开始推送飘屏
-                $text = $room_name."的巡乐会即将开始，请大家尽快参与哦!";
-                //推送礼物横幅
                 $push = new Push(UID, $room_id);
                 $text_list_new = [
                     'text' => $text,
@@ -318,10 +383,10 @@ class BlindBoxTurntableGift extends Model
                 ];
                 $push->xunlehui($text_list_new);
             }
-            if($room['xlh_periods_num'] == $xlh_ext['open_condition']['start_num']){
+            if($xlh_is_piao_ping == 2){
-                //正式开始推送飘屏
+                // 正式开始推送飘屏
                 $text = $room['room_name']."的巡乐会正式开始，请大家尽快参与哦!";
-                //推送礼物横幅
+                // 推送礼物横幅
                 $push = new Push(UID, $room_id);
                 $text_list_new = [
                     'text' => $text,
@@ -329,7 +394,7 @@ class BlindBoxTurntableGift extends Model
                     'from_type' => 2
                 ];
                 $push->xunlehui($text_list_new);
-                //巡乐会正式开始
+                // 巡乐会正式开始
                 $pan_xlh_id = db::name('vs_room_pan_xlh')->insertGetId([
                     'room_id' => $room_id,
                     'gift_id' => $xlh_ext['locking_condition']['locking_gift_id'],
@@ -340,19 +405,109 @@ class BlindBoxTurntableGift extends Model
                     'createtime' => time()
                 ]);
                 if(!$pan_xlh_id){
-                    return ['code' => 0, 'msg' => '失败!', 'data' => []];
+                    return ['code' => 0, 'msg' => '创建巡乐会失败!', 'data' => []];
                 }
-                db::name("vs_room")->where('id',$room_id)->setInc('xlh_periods');//修给巡乐会期数
+                db::name("vs_room")->where('id',$room_id)->setInc('xlh_periods');//修改巡乐会期数
+            }
+
+            $xlh['waiting_start_num'] = $xlh_ext['open_condition']['waiting_start_num'];//等待开奖次数
+            $xlh['start_num'] = $xlh_ext['open_condition']['start_num'];//开始开奖次数
+            // 当前抽奖次数
+            $xlh['current_num'] = $current_xlh_periods_num;
+            // 状态
+            if($xlh['current_num'] >= $xlh_ext['open_condition']['start_num']){
+                $xlh['status'] = 1;//状态 1:巡乐会开始 2:即将开始开始 0:等待开始
+            } elseif($xlh['current_num'] >= $xlh_ext['open_condition']['waiting_start_num'] && $xlh['current_num'] < $xlh_ext['open_condition']['start_num']){
+                $xlh['status'] = 2;//状态 1:巡乐会开始 2:即将开始开始 0:等待开始
+            }else{
+                $xlh['status'] = 0;
+            }
+            // 推送
+            $text = [
+                'xlh_data' => $xlh,
+                'text' => ""
+            ];
+            // 聊天室推送系统消息
+            model('Chat')->sendMsg(1056,$room_id,$text);
+        }
+
+        // 整理返回结果
+        $result_list = [];
+        foreach ($gift_counts as $gift) {
+            $result_list[] = [
+                'gift_id' => $gift['gift_id'],
+                'count' => $gift['count']
+            ];
+        }
+        $reslut = [];
+        $reslut['blind_box_turntable_id'] = $box_turntable_log;
+        $reslut['reslut_list'] = $result_list;
+        return V(1,"成功", $reslut);
+    }
+
+    /*
+     * 获取可用礼物用于预计算
+     */
+    private function get_available_gifts_for_precompute($gift_bag_id, $room_id, $total_draw_times) {
+        $where = [
+            'a.gift_bag_id' => $gift_bag_id,
+            'a.quantity' => ['>',0],
+            'b.remaining_number' => ['>',0],
+            'b.room_id' => $room_id,
+            'a.weight' => ['<=', $total_draw_times],
+        ];
+
+        return db::name("vs_gift_bag_detail")
+            ->field('a.id,a.quantity,b.remaining_number,a.weight,a.foreign_id')
+            ->alias('a')
+            ->join('vs_room_pan b','b.gift_bag_detail_id = a.id','left')
+            ->where($where)
+            ->select();
+    }
+
+    /*
+     * 预计算单次抽奖结果
+     */
+    private function precompute_single_draw($available_gifts) {
+        if (empty($available_gifts)) {
+            return false;
+        }
+
+        // 实现加权随机算法：剩余数量越多，被抽中的概率越大
+        $remaining = 0;
+        foreach ($available_gifts as $gift) {
+            $remaining += $gift['remaining_number'];
+        }
+
+        $rand_value = mt_rand(1, $remaining);
+        $current_sum = 0;
+        $selected_gift = null;
+
+        foreach ($available_gifts as $gift) {
+            if($gift['remaining_number'] <= 0){
+                continue;
+            }
+            $current_sum += $gift['remaining_number'];
+            if ($rand_value <= $current_sum) {
+                $selected_gift = $gift;
+                break;
             }
         }
-        $result_data = [
+        if (!$selected_gift) {
-            'user_id' => $user_id,
+            return false;
-            'gift_user_id'=>$gift_user_id,
+        }
-            'gift_id'=>$gift_bag_detail['foreign_id'],
+        // 获取开出礼物的信息
-            'gift_price'=>$gift['gift_price'],
+        $gift = db::name("vs_gift")
-            'is_public_screen'=>$gift['is_public_screen'],
+            ->where(['gid'=>$selected_gift['foreign_id']])
+            ->find();
+
+        if (!$gift) {
+            return false;
+        }
+        return [
+            'gift_bag_detail' => $selected_gift,
+            'gift' => $gift
         ];
-        return ['code' => 1, 'msg' => '成功', 'data' => $result_data];
     }
 
     /*