feat(history): 新增特码冷热查询功能 — 选定某一期向前y期判定冷热号

在history页面添加「特码冷热」按钮，用户可选择指定期号并设定向前期数
系统统计该期特码在向前范围内的出现频率，与平均值对比判定冷/温/热号

application/admin/controller/History.php

@@ -22,7 +22,7 @@ class History extends Backend
      * 无需额外权限检查的方法（但仍在 admin 模块内，需要 admin 登录）
      * @var array
      */
-    protected $noNeedRight = ['missingNum', 'trendData', 'hotColdNumbers', 'colorWaveAnalysis', 'zodiacAnalysis', 'oddEvenAnalysis', 'bigSmallAnalysis', 'specialTrend', 'consecutiveNumbers', 'tailNumbers', 'dashboard', 'specialHeatmap'];
+    protected $noNeedRight = ['missingNum', 'trendData', 'hotColdNumbers', 'colorWaveAnalysis', 'zodiacAnalysis', 'oddEvenAnalysis', 'bigSmallAnalysis', 'specialTrend', 'consecutiveNumbers', 'tailNumbers', 'dashboard', 'specialHeatmap', 'specialHotColdAction'];
 
     public function _initialize()
     {
@@ -236,6 +236,28 @@ class History extends Backend
         }
     }
 
+    /**
+     * 特码冷热查询（指定期号向前y期判定）
+     */
+    public function specialHotColdAction()
+    {
+        if ($this->request->isAjax()) {
+            $expect = $this->request->get('expect', '');
+            if (empty($expect)) {
+                $this->error('请输入期号');
+            }
+            $lookback = $this->request->get('lookback', 30, 'intval');
+            if ($lookback < 10 || $lookback > 100) {
+                $this->error('向前期数范围必须在 10-100 之间');
+            }
+            $result = $this->model->getSpecialHotColdByExpect($expect, $lookback);
+            if ($result === false) {
+                $this->error('未找到该期号数据');
+            }
+            $this->success('查询成功', null, $result);
+        }
+    }
+
     /**
      * 特码热力图
      */

application/admin/model/History.php

@@ -468,6 +468,106 @@ class History extends Model
         ];
     }
 
+    /**
+     * 查询指定期号特码在向前y期范围内的冷热状态
+     * @param string|int $expect 指定期号
+     * @param int $lookback 向前推算期数
+     * @return array|false 冷热状态数据，未找到返回false
+     */
+    public function getSpecialHotColdByExpect($expect, $lookback = 30)
+    {
+        // 查询指定期号的数据
+        $target = $this->where('expect', $expect)->field('expect,num7,openTime')->find();
+        if (!$target) {
+            return false;
+        }
+
+        $specialNum = (int)$target['num7'];
+
+        // 查询该期往前lookback期的数据（按openTime排序，取目标期之前的lookback条）
+        $history = $this
+            ->field('expect,num7,openTime')
+            ->where('openTime', '<', $target['openTime'])
+            ->order('openTime', 'desc')
+            ->limit($lookback)
+            ->select();
+
+        $totalPeriods = count($history);
+        if ($totalPeriods === 0) {
+            return [
+                'expect' => (string)$expect,
+                'specialNum' => $specialNum,
+                'lookback' => $lookback,
+                'count' => 0,
+                'avgCount' => 0,
+                'status' => 'cold',
+                'rank' => 0,
+                'totalPeriods' => 0,
+                'allStats' => []
+            ];
+        }
+
+        // 统计lookback范围内每个特码的出现次数
+        $count = array_fill(1, 49, 0);
+        foreach ($history as $row) {
+            $num = (int)$row['num7'];
+            if ($num >= 1 && $num <= 49) {
+                $count[$num]++;
+            }
+        }
+
+        // 计算目标特码的出现次数
+        $targetCount = $count[$specialNum];
+
+        // 计算平均出现次数（49个号码，totalPeriods期）
+        $avgCount = $totalPeriods / 49;
+
+        // 判定冷热
+        $status = 'normal';
+        if ($avgCount > 0) {
+            if ($targetCount > $avgCount * 1.5) {
+                $status = 'hot';
+            } elseif ($targetCount < $avgCount * 0.5) {
+                $status = 'cold';
+            }
+        }
+
+        // 计算排名（按出现次数降序）
+        $sorted = [];
+        for ($num = 1; $num <= 49; $num++) {
+            $sorted[] = ['num' => $num, 'count' => $count[$num]];
+        }
+        usort($sorted, function ($a, $b) {
+            return $b['count'] - $a['count'];
+        });
+
+        $rank = 0;
+        foreach ($sorted as $idx => $item) {
+            if ($item['num'] === $specialNum) {
+                $rank = $idx + 1;
+                break;
+            }
+        }
+
+        // 构建所有号码的统计（只返回top和bottom用于展示）
+        $hotNums = array_slice($sorted, 0, 5);
+        $coldNums = array_slice($sorted, -5);
+        $coldNums = array_reverse($coldNums);
+
+        return [
+            'expect' => (string)$expect,
+            'specialNum' => $specialNum,
+            'lookback' => $lookback,
+            'count' => $targetCount,
+            'avgCount' => round($avgCount, 2),
+            'status' => $status,
+            'rank' => $rank,
+            'totalPeriods' => $totalPeriods,
+            'hotNums' => $hotNums,
+            'coldNums' => $coldNums
+        ];
+    }
+
     /**
      * 特码热力图数据
      * @param int $periods 查询最近多少期

application/admin/view/history/index.html

@@ -17,6 +17,7 @@
                         <a href="javascript:;" class="btn btn-success btn-sumchart" title="{:__('Sum Chart')}"><i class="fa fa-line-chart"></i> {:__('Sum Chart')}</a>
                         <a href="javascript:;" class="btn btn-warning btn-consecutive" title="{:__('Consecutive')}"><i class="fa fa-link"></i> {:__('Consecutive')}</a>
                         <a href="javascript:;" class="btn btn-default btn-tailnums" title="{:__('Tail Numbers')}"><i class="fa fa-list-ol"></i> {:__('Tail Numbers')}</a>
+                        <a href="javascript:;" class="btn btn-danger btn-specialhotcold" title="{:__('Special Hot/Cold')}"><i class="fa fa-fire"></i> {:__('Special Hot/Cold')}</a>
 <!--                        <a href="javascript:;" class="btn btn-success btn-dashboard" title="{:__('Dashboard')}"><i class="fa fa-tachometer"></i> {:__('Dashboard')}</a>-->
 <!--                        <a href="javascript:;" class="btn btn-success btn-add {:$auth->check('history/add')?'':'hide'}" title="{:__('Add')}" ><i class="fa fa-plus"></i> {:__('Add')}</a>-->
                     </div>