feat(phase-2): add trend chart analysis - grid view of number history

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'];
+    protected $noNeedRight = ['missingNum', 'trendData'];
 
     public function _initialize()
     {
@@ -52,5 +52,25 @@ class History extends Backend
         }
     }
 
+    /**
+     * 获取走势图数据
+     * @return void
+     */
+    public function trendData()
+    {
+        if ($this->request->isAjax()) {
+            $periods = $this->request->get('periods', 30, 'intval');
+            if ($periods < 10 || $periods > 100) {
+                $this->error('期数范围必须在 10-100 之间');
+            }
+            $type = $this->request->get('type', 'all');
+            if (!in_array($type, ['all', 'special'])) {
+                $this->error('查询类型不正确');
+            }
+            $result = $this->model->getTrendData($periods, $type);
+            $this->success('查询成功', null, $result);
+        }
+    }
+
 
 }