<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------
namespace ywxapp\model;

use think\model\concern\SoftDelete;

use ywxapp\model\BaseModel;
/**
 * BackendPower 类
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class BackendPower extends BaseModel
{
    use SoftDelete;
    
    protected function getOptions(): array
    {
        return [
            'strict'             => false,
            'name'               => 'backend_power',
            'autoWriteTimestamp' => 'int',
            'createTime'         => 'create_at',
            'updateTime'         => 'update_at',
            'deleteTime'         => 'delete_at',
            'defaultSoftDelete'  => 0,
            'append'             => ['target'],
            'hidden'             => ['create_at', 'update_at', 'delete_at'],
            'readonly'           => ['id'],
        ];
    }

    
    public static function onAfterRead($data)
    {
        // 这里可以直接使用$this访问当前模型
        // if ($data->type == 2) {
        //     $data->append(['href', 'openType']);
        //     $data->openType = '_iframe';
        //     $data->href     = $data->route;
        // }
    }

    
    public static function onAfterDelete($data)
    {
        BackendRolePower::where('power_id', $data->id)->delete();
    }

    /**
     * 获取器：获取状态文本
     */
    public function getTargetAttr($value, $data)
    {
        return '_self';
    }

    // 自关联子菜单
    
    public function children()
    {
        return $this->hasMany(BackendPower::class, 'pid', 'id')->order('sort', 'asc');
    }

    // 拥有该权限的角色
    
    public function roles()
    {
        return $this->belongsToMany(BackendRole::class, BackendRolePower::class, 'role_id', 'power_id');
    }

    // 拥有该权限的用户（通过角色）
    
    public function admins()
    {
        return $this->belongsToMany(BackendAdmin::class, BackendRoleAccess::class, 'admin_id', 'role_id')->via('roles');
    }

    /**
     * 将扁平菜单数组转为树形结构
     * @param array $menus 扁平菜单列表（每个元素是数组）
     * @param int $parentId 父ID（默认0表示根）
     * @return array 树形结构
     */
    public static function buildTree(array $menus, int $parentId = 0): array
    {
        $branch = [];
        foreach ($menus as $menu) {
            if ($menu['pid'] == $parentId) {
                $children = self::buildTree($menus, $menu['id']);
                if (! empty($children)) {
                    $menu['child'] = $children;
                }
                $branch[] = $menu;
            }
        }
        return $branch;
    }

    /**
     * 【可选】从 Collection 转为树（如果你用模型查询）
     */
    public static function buildTreeFromCollection(Collection $collection, int $parentId = 0): array
    {
        $menus = $collection->toArray();
        return self::buildTree($menus, $parentId);
    }

    /**
     * 获取权限树形结构
     * @param int $parentId 父ID（默认0表示根）
     * @return array 树形结构
     */
    public static function getTree($parentId = 0)
    {
        $list = self::where('pid', $parentId)
            ->order('sort', 'asc')
            ->select()
            ->toArray();

        foreach ($list as &$item) {
            $item['children'] = self::getTree($item['id']);
        }

        return $list;
    }

    /**
     * 无限分类-权限
     * @param array $cate         栏目
     * @param string $lefthtml 分隔符
     * @param int $pid         父ID
     * @param int $level         层级
     * @return array
     */
    public static function cateTree($cate, $name = 'title', $lefthtml = '|— ', $pid = 0, $level = 0)
    {
        $arr = [];
        foreach ($cate as $v) {
            if ($v['pid'] == $pid) {
                $v['level']     = $level + 1;
                $v['lefthtml']  = str_repeat($lefthtml, $level);
                $v['l' . $name] = $v['lefthtml'] . lang($v[$name]);
                $arr[]          = $v;
                $arr            = array_merge($arr, self::cateTree($cate, $name, $lefthtml, $v['id'], $level + 1));
            }
        }
        return $arr;
    }

    /**
     * 表结构自愈：建表 + 关键列兜底（install.sql 为事实源）。
     * 查询/写入前调用，避免老库缺表导致 1146。
     */
    public static function ensureSchema(): void
    {
        BaseModel::ensureTableFromInstall(BaseModel::currentPrefix(), 'backend_power');
    }
}