<?php

namespace app\admin\model\app\physical;

use think\Model;


class Sku extends Model
{

    protected $name = 'app_physical_sku';
    
    protected $autoWriteTimestamp = 'integer';

    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';
    protected $deleteTime = false;

    protected $append = [
    ];
    

    public function goods()
    {
        return $this->belongsTo('app\admin\model\app\physical\Goods', 'goods_id', 'id');
    }

    public function skuPrices()
    {
        return $this->hasMany('app\admin\model\app\physical\SkuPrice', 'goods_id', 'goods_id');
    }

    public static function getTree($goodsId)
    {
        $items = self::where('goods_id', $goodsId)
            ->where('uniacid', UNIACID)
            ->order('weigh', 'asc')
            ->select();

        if (is_object($items) && method_exists($items, 'toArray')) {
            $items = $items->toArray();
        }

        if (empty($items)) {
            return [];
        }

        // 确保所有项都是数组，并以ID为键
        $data = [];
        foreach ($items as $item) {
            if (is_object($item)) {
                $item = $item->toArray();
            }
            $item['children'] = [];
            $data[$item['id']] = $item;
        }

        $tree = [];
        foreach ($data as $key => $item) {
            if ($item['parent_id'] > 0 && isset($data[$item['parent_id']])) {
                $data[$item['parent_id']]['children'][] = &$data[$key];
            }
        }
        
        foreach ($data as $key => $item) {
            if ($item['parent_id'] == 0) {
                $tree[] = $data[$key];
            }
        }

        return $tree;
    }
}