第二阶段完善代理商激活码

app/manager/model/ActivationCode.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace app\manager\model;
+
+use think\Model;
+
+class ActivationCode extends Model
+{
+    protected $name = 'cursor_activation_codes';
+    
+    // 自动写入时间戳
+    protected $autoWriteTimestamp = true;
+    protected $createTime = 'created_at';
+    protected $updateTime = false;
+
+    // 设置字段类型
+    protected $type = [
+        'used_at' => 'datetime',
+        'created_at' => 'datetime',
+    ];
+
+    // 获取代理商分配信息
+    public function agentCode()
+    {
+        return $this->hasOne('app\manager\model\AgentCode', 'code_id');
+    }
+
+    // 检查是否已分配给代理商
+    public function isAssigned()
+    {
+        return (bool)$this->agentCode;
+    }
+
+    // 检查是否可用
+    public function isAvailable()
+    {
+        return !$this->is_used && !$this->isAssigned();
+    }
+}