<?php

namespace app\common\model;

use support\Model;

/**
 * resources 资源表：目录/菜单/权限
 * @property integer $id 资源ID(主键)
 * @property string $name 资源名称
 * @property string $type 资源类型
 * @property string $code 资源编码（权限标识）
 * @property integer $parent_id 父资源ID
 * @property string $url 路由 path 或 外链 URL
 * @property string $icon 图标，仅目录/菜单有效
 * @property string $open_type 菜单打开方式
 * @property integer $sort 排序
 * @property string $created_at 
 * @property string $updated_at
 */
class Resource extends Model
{
    /**
     * The connection name for the model.
     *
     * @var string|null
     */
    protected $connection = 'mysql';
    
    /**
     * The table associated with the model.
     *
     * @var string
     */
    protected $table = 'resources';

    /**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'id';

    /**
     * Indicates if the model should be timestamped.
     *
     * @var bool
     */
    public $timestamps = true;
    
    
    // 所属系统
    public function system()
    {
        return $this->belongsTo(Systems::class, 'system_id', 'id');
    }

    // 拥有该资源的角色
    public function roles()
    {
        return $this->belongsToMany(Role::class, 'role_resources', 'resource_id', 'role_id');
    }

    // 拥有该资源的用户（特殊补权）
    public function users()
    {
        return $this->belongsToMany(User::class, 'user_resources', 'resource_id', 'user_id');
    }

    // 递归
    public function parent()
    {
        return $this->belongsTo(self::class, 'parent_id');
    }

    public function children()
    {
        return $this->hasMany(self::class, 'parent_id');
    }
}