<?php

namespace App\Http\Logic\Bside\Product;

use App\Http\Logic\Bside\BaseLogic;
use App\Models\Product\Attr;
use App\Models\Product\AttrValue;
use Illuminate\Support\Facades\DB;

/**
 * Class AttrLogic
 * @package App\Http\Logic\Bside\Product
 * @author zbj
 * @date 2023/4/15
 */
class AttrLogic extends  BaseLogic
{
    public function __construct()
    {
        parent::__construct();

        $this->model = new Attr();
    }

    public function getInfo($id){
        $info = parent::getCacheInfo($id);
        if(!$info){
            $this->fail('数据不存在或者已经删除');
        }
        $info->values;
        return $this->success($info->toArray());
    }

    public function save($param){
        $param['values'] = array_unique($param['values']);
        DB::beginTransaction();
        try {
            //删除之前的参数值
            if(!empty($param['id'])){
                AttrValue::where('attr_id', $param['id'])->delete();
            }

            //保存参数名称
            $data = $param;
            unset($data['values']);
            $data['value_num'] = count($param['values']);
            $res = parent::save($data);
            $attr_id = $res['id'];

            //保存参数值
            $values = [];
            foreach ($param['values']  as $value){
                $values[] = [
                    'attr_id' => $attr_id,
                    'value' => $value
                ];
            }
            AttrValue::insert($values);

            DB::commit();
        }catch (\Exception $e){
            DB::rollBack();
            $this->fail('保存失败');
        }
        return $this->success();
    }
}