qimall/addons/CloudStock/common/service/RandFeeService.php

<?php

namespace addons\CloudStock\common\service;

use addons\CloudStock\common\models\CloudStockRandFeeOrder;
use common\enums\AddonsEnum;
use common\models\order\OrderDetail;
use common\models\user\User;
use Exception;
use Yii;
use yii\base\Model;
use yii\helpers\Json;

class RandFeeService extends Model
{
    /**
     * 商户ID
     *
     * @var integer
     */
    public $mall_id;

    /**
     * 满减
     *
     * @param array $params
     * [
     *   'mall_id' => mall_id
     *   'orders' => [order, order]
     * ]
     * @return void
     */
    public static function minus($params)
    {   
        if (empty($params['mall_id'])) {
            return 0;
            // throw new Exception('mall-id 未设置');
        }
        $mall_id = $params['mall_id'];
        if (empty($params['orders'])) {
            return 0;
            // throw new Exception('orders 不存在');
        }
        $orders = $params['orders'];
        if (empty($params['user_id'])) {
            return 0;
            // throw new Exception('orders 不存在');
        }
        $user_id = $params['user_id'];
        // 判断订单类型
        foreach ($orders as $k => $order) {
            // 未定义订单类型的不处理
            if (empty($order['order_type'])) {
                return 0;
            }
            //是否为云库存订单
            if ($orders[$k]['order_type'] != AddonsEnum::ADDONS_NAME_CLOUD_STOCK) {
                return 0;
            }
            //是否为补货订单
            if(substr($order['order_no'],0,3) != 'CSF'){
                return 0;
            }
        }
        // 获取设置
        $configs = \Yii::$app->services->setting->addons->get($mall_id, AddonsEnum::ADDONS_NAME_CLOUD_STOCK, 'basic');
        if (empty($configs['is_enable_rand_fee'])) {
            return 0;
        }
        $condition = json_decode($configs['rand_condition'],true);
        if (empty($condition)) {
            return 0;
        }

        // 订单
        $total_price = 0;
        foreach ($orders as $order) {
            $total_price = bcadd($order['amount'], $total_price, 2);
        }

        // 获取随机减金额
        $min = 0;
        $max = 0;
        foreach ($condition as $val) {
            if ($total_price >= $val['total_price']) {
                $min = bcmul($val['rand_min'], 100, 2);
                $max = bcmul($val['rand_max'], 100, 2);
            }
        }
        if ($min == 0 && $max == 0) {
            return 0;
        }

        // 随机减金额
        $left = $rand_fee = bcdiv(mt_rand($min, $max), 100, 2);
        // 分配随机减金额
        $models = [];
        foreach ($orders as $order) {
            // 分配的金额
            $order_rand_fee = $rand_fee / ($total_price / $order['amount']);
            // 小于最小单位
            $order_rand_fee = $order_rand_fee < 0.01 ? 0.01 : $order_rand_fee;
            // 判断剩余为0时候 不使用最小单位
            $order_rand_fee = $left == 0 ? 0 : $order_rand_fee;
            $result = CloudStockRandFeeOrder::find()->where(['order_no'=>$order['order_no'],'user_id'=>$order['user_id'],'mall_id'=>$mall_id])->one();
            if(!empty($result)){
                $rand_fee = 0;
                $order_rand_fee = 0;
                continue;
            }

            // 创建订单
            ($model = new CloudStockRandFeeOrder())->load([
                'mall_id' => $mall_id,
                'order_id' => $order['order_id'] ?: 0,
                'order_no' => $order['order_no'],
                'user_id' => $user_id,
                'rand_fee' => $order_rand_fee, // 订单随机减
                'total_rand_fee' => $rand_fee, // 随机减
                'order_type' => $order['order_type'],
                'created_at' => time(),
            ], '');
            $res = $model->save();
            if ($res === false) throw new Exception('随机减订单生产失败');
            $models[] = $model;
            // 减少剩余的
            $left = bcsub($rand_fee, $order_rand_fee, 2);
        }
        return [$rand_fee, $models, [
            sprintf('%.2f', bcdiv($min, 100, 2)),
            sprintf('%.2f', bcdiv($max, 100, 2))
        ]];
    }
}