<?php

namespace app\common\Service\User;

use app\common\exception\BusinessException;
use app\common\model\User as UserModel;

class UserService
{

    public static function getUserById($userId = 0)
    {        
        return UserModel::where('id', $userId)->find();;
    }

    /**
     * @name 追加消费金额和总订单数
     * @param  int|object   $userId      会员ID
     * @param  float        $amount      变更金额
     * @param  int          $orderCount  订单数量增量，默认为1
     * @return boolean
     */
    public static function consume($userId = 0, $amount, $orderCount = 1)
    {
        // 判断金额
        if ($amount == 0) {
            return false;
        }
        $user = self::getUserById($userId);        
        if (!$user) {
            throw new BusinessException('未找到用户');
        }
        
        // 更新会员消费金额和订单数量
        $user->setInc('total_consume', $amount);
        if ($orderCount > 0) {
            $user->setInc('order_count', $orderCount);
        }

        return true;
    }

}