<?php
namespace backend\modules\shop\logic;

use backend\modules\shop\models\ars\City;
use backend\modules\shop\models\ars\ExpressArea;
use backend\modules\shop\models\ars\Province;
use backend\modules\shop\models\ars\ExpressTemplate;

class ShopManager
{
    //单位类型
    const UNIT_TYPE_WEIGHT = 1; //重量
    const UNIT_TYPE_MONEY = 2;  //金额
    const UNIT_TYPE_ITEM = 3;   //件

    /**
     * @param $type
     * @param $value
     * @return int
     * 比例转换
     */
    public static function proportionalConversion($type)
    {
        switch ($type) {
            case self::UNIT_TYPE_WEIGHT:
                return 1000;    //后台显示为kg，数据库保存为g
                break;
            case self::UNIT_TYPE_MONEY:
                return 100; //后台显示为元，数据库保存为分
                break;
            case self::UNIT_TYPE_ITEM:
                return 1;   //后台显示和数据库都为件
                break;
            default:
                return 1;
        }
    }

    /**
     * @param $expressAreaModel
     * @param $expressTemplateModel
     * 区域运费模板按比例转化数据
     */
    public static function expressAreaScaleDate($expressAreaModel, $expressTemplateModel)
    {
        $expressAreaModel->basic_price *= self::proportionalConversion(self::UNIT_TYPE_MONEY);
        $expressAreaModel->extra_price *= self::proportionalConversion(self::UNIT_TYPE_MONEY);
        if ($expressTemplateModel->calculation_type == ExpressTemplate::CALCULATION_TYPE_WEIGHT) {
            $expressAreaModel->basic_count *= self::proportionalConversion(self::UNIT_TYPE_WEIGHT);
            $expressAreaModel->extra_count *= self::proportionalConversion(self::UNIT_TYPE_WEIGHT);
        } else {
            $expressAreaModel->basic_count *= self::proportionalConversion(self::UNIT_TYPE_ITEM);
            $expressAreaModel->extra_count *= self::proportionalConversion(self::UNIT_TYPE_ITEM);
        }
    }

    /**
     * @param $expressAresModel
     * @return array
     * 除去已被选取的城市，筛选剩下的城市数据
     */
    public static function filterCity($expressAresModel)
    {
        $data = [];
        $query = ExpressArea::find()
            ->select(['city'])
            ->where(['express_template' => $expressAresModel->express_template]);
        if ($expressAresModel->id) {    //修改操作时，除去自身的城市
            $query = $query->andWhere(['!=', 'id', $expressAresModel->id]);
        }
        $expressAreas = $query->all();

        //获取已选的城市id数组
        $expressAresCityIdArr = [];
        if ($expressAreas) {
            foreach ($expressAreas as $expressAreaCity) {
                $cityIdArr = explode(',', $expressAreaCity->city);
                $expressAresCityIdArr = array_unique(array_merge($cityIdArr, $expressAresCityIdArr));
            }
        }

        //筛选剩下的城市
        $provinces = Province::find()->cache(0)->all();
        $j = 0;
        foreach ($provinces as $k => $v) {
            $cities = City::find()
                ->where(['province_id' => $v->province_id])
                ->andWhere(['not in', 'city_id', $expressAresCityIdArr])
                ->all();
            if ($cities) {
                $data[$j]['province'] = $v->name;
                foreach ($cities as $city) {
                    $data[$j]['city'][] = ['id' => $city->city_id, 'name' => $city->name];
                }
                $j++;
            }
        }
        return $data;
    }
}