antshop/api/logic/Helper.php

<?php

namespace api\logic;

use backend\modules\file\models\ars\File;
use backend\modules\goods\models\ars\Goods;
use backend\modules\goods\models\ars\GoodsAttr;
use backend\modules\goods\models\ars\GoodsSku;
use backend\modules\shop\models\ars\Cart;
use yii\data\ActiveDataProvider;
use yii\helpers\Url;
use yii\web\BadRequestHttpException;
use yii\web\NotFoundHttpException;
use Yii;
use yii\web\ServerErrorHttpException;

/**
 * @author iron
 * @email weiriron@gmail.com
 * Class Helper
 * @package api\logic
 */
class Helper
{
    const REQUEST_BAD_PARAMS = '参数缺失或包含无效参数';


    public static function timeRandomNum($digit, $Prefix = '')
    {
        $max = pow(10, $digit + 1);
        return $Prefix . date('YmdHis', time()) . rand(0, $max - 1);
    }

    /**
     * @param $data
     * @param $oid
     * @param $type
     * @throws ServerErrorHttpException
     */
    public static function saveFileMsg($data, $oid, $type)
    {
        $file = new File();
        $file->type = 1;
        $file->own_type = $type;
        $file->own_id = $oid;
        $file->path = $data['fileName'];
        $file->alias = $data['alias'];
        if (!$file->save()) {
            throw new ServerErrorHttpException('服务器保存文件失败');
        }
    }

    /**
     * @param $dirs
     * @param $file
     * @return array
     * @throws ServerErrorHttpException
     */
    public static function uploadImage($dirs, $file)
    {
        $savePath = Yii::getAlias('@app') . '/web/uploads';
        if (!is_dir($savePath)) {
            mkdir($savePath, 0755);
        }
        foreach ($dirs as $dir) {
            $savePath .= "/$dir";
            if (!is_dir($savePath)) {
                mkdir($savePath, 0755);
            }
        }
        $fileName = time() . rand(0, 9999) . '.' . $file->extension;
        $path = $savePath . $fileName;
        if (!$file->saveAs($path)) {
            throw new ServerErrorHttpException('服务器保存图片失败');
        }
        return ['fileName' => '/uploads/' . $dirs . '/' . $fileName, 'alias' => $file->baseName . $file->extension];
    }

    /**
     * @param $array
     * @return string
     */
    public static function errorMessageStr($array): string
    {
        $data = [];
        foreach ($array as $k => $v) {
            $data[] = implode(' ', $v);
        }
        return implode(' ', $data);
    }

    /**
     * @param array $ids 购物车id 数组
     * @throws NotFoundHttpException
     * @throws ServerErrorHttpException
     * @throws \Throwable
     * @throws \yii\db\StaleObjectException
     */
    public static function delCarts($ids)
    {
        foreach ($ids as $id) {
            $cart = Cart::find()
                ->where(['id' => $id])
                ->andWhere(['user_id' => Yii::$app->user->getId()])
                ->one();
            if (!$cart) {
                throw new NotFoundHttpException("未找到该购物车");
            }
            if (!$cart->delete()) {
                throw new ServerErrorHttpException('服务器删除购物车失败');
            }
        }
    }

    /**
     * @param $goodsId
     * @param $count
     * @param null $skuId
     * @return  bool true代表无限库存,false代表有限库存需要进行增删库存操作
     * 判断库存
     * @throws NotFoundHttpException
     * @throws BadRequestHttpException
     */
    public static function checkStock($goodsId, $count, $skuId = null)
    {
        $sku = GoodsSku::findOne($skuId);
        $goods = Goods::findOne($goodsId);
        if (!$goods) {
            throw new NotFoundHttpException('商品未找到');
        }
        if ($goods->stock == Goods::UNLIMITED_STOCK) {
            return true;
        }
        if ($sku && $sku->stock == Goods::UNLIMITED_STOCK) {
            return true;
        }
        $stock = $sku ? $sku->stock : $goods->stock;
        if ($stock < $count) {
            throw new BadRequestHttpException("{$goods->name}库存不足");
        }
        return false;
    }

    /**
     * @param $model
     * @param $view
     * post的返回头设置
     */
    public static function createdResponse($model, $view)
    {
        $response = Yii::$app->getResponse()->setStatusCode(201);
        $id = implode(',', array_values($model->getPrimaryKey(true)));
        $response->getHeaders()->set('Location', Url::toRoute([$view, 'id' => $id], true));
    }

    /**
     * @param $goodsId
     * @param $skuId
     * @return int
     * @throws NotFoundHttpException
     * 计算商品价格
     */
    public static function goodsPrice($goodsId, $skuId)
    {
        $goods = Goods::findOne($goodsId);
        if (!$goods) {
            throw new NotFoundHttpException('商品未找到');
        }
        $price = $goods->price;
        $sku = GoodsSku::findOne($skuId);
        if ($sku) {
            $price = $sku->price;
        }
        return $price;
    }

    /**
     * @param $skuId
     * @return string
     * @throws NotFoundHttpException
     * 获取拼接后的sku值
     */
    public static function skuValue($skuId)
    {
        $sku = GoodsSku::findOne($skuId);
        if (!$sku) {
            return '';
        }
        $data = [];
        $goodsAttr = array_filter(explode(',', $sku->goods_attr));
        if (empty($goodsAttr)) {
            throw new NotFoundHttpException('sku无对应商品属性');
        }
        foreach ($goodsAttr as $k => $v) {
            $attr = GoodsAttr::findOne($v);
            if (!$attr) {
                throw new NotFoundHttpException('商品属性未找到');
            }
            $data[] = $attr->attr_value;
        }
        return implode(',', $data);

    }

    /**
     * @param $query
     * @return object
     * @throws \yii\base\InvalidConfigException
     * 获取数据
     */
    public static function index($query)
    {
        $requestParams = Yii::$app->request->getBodyParams();
        return Yii::createObject([
            'class' => ActiveDataProvider::className(),
            'query' => $query,
            'pagination' => [
                'params' => $requestParams,
            ],
            'sort' => [
                'params' => $requestParams,
            ],
        ]);
    }
}