<?php
/**
 *
 * @author: xaboy<365615158@qq.com>
 * @day: 2017/12/13
 */

namespace app\models\store;


use crmeb\basic\BaseModel;
use think\facade\Db;
use crmeb\traits\ModelTrait;

/**
 * TODO  产品属性Model
 * Class StoreProductAttr
 * @package app\models\store
 */
class StoreProductLevel extends BaseModel
{
    /**
     * 模型名称
     * @var string
     */
    protected $name = 'store_product_level';

    use ModelTrait;
    protected $autoWriteTimestamp = true;

    protected $createTime = 'add_time';

    protected $updateTime = 'update_time';

    /**
     * 获取商品的等级返利数据
     * @param int $productId 商品ID
     * @return array
     */
    public static function getProductLevelRebate($productId)
    {
        return self::where('product_id', $productId)->select()->toArray();
    }

    /**
     * 根据等级ID获取返利比例
     * @param int $productId 商品ID
     * @param int $levelId 等级ID
     * @return float|int
     */
    public static function getRebateRatio($productId, $levelId)
    {
        $rebate = self::where('product_id', $productId)->where('level_id', $levelId)->value('rebate_ratio');
        return $rebate !== null ? $rebate : 0;
    }

    /**
     * 批量保存商品等级返利数据
     * @param int $productId 商品ID
     * @param array $levelRebates 等级返利数据
     * @return bool
     */
    public static function saveProductLevelRebate($productId, $levelRebates)
    {
        // 开启事务
        self::beginTrans();
        try {
            // 删除原有数据
            self::where('product_id', $productId)->delete();

            // 插入新数据
            foreach ($levelRebates as $level) {
                self::create([
                    'product_id' => $productId,
                    'level_id' => $level['id'],
                    'rebate_ratio' => $level['rebate_ratio'],
                ]);
            }

            // 提交事务
            self::commitTrans();
            return true;
        } catch (\Exception $e) {
            // 回滚事务
            self::rollbackTrans();
            return false;
        }
    }

}