用PHP做一个领取优惠券的活动

/**
 * Function:优惠券领取处理
 * Author:cyw0413
 * @param $params
 * @return array
 * @throws \Exception
 */
public function doCoupon($params)
{
    $activity_id = $params['activity_id'];
    if(!$params){
        throw new \Exception("参数错误！");
    }

    $preg_phone = '/^1[34578]\d{9}$/ims';
    $is_mobile = preg_match ($preg_phone, $params['mobile']);
    if ($is_mobile == 0) {
        throw new \Exception("手机号码不正确！");
    }

    //隐藏手机号码中间4位
    $str_mobile = substr_replace($params['mobile'],'****',3,4);

    $activity = $this->find($activity_id);
    if(empty($activity)){
        throw new \Exception("不存在此活动");
    }

    $activity_link = $activity->activityLink->where('coupon_status',0);  //只选择不停用的优惠券
    if(count($activity_link) <= 0){
        throw new \Exception("优惠券不存在或者已经停用");

    }else{

        //查找注册用户ID
        $showUser = $this->showUser($params['mobile']);
        //主要是过滤掉领取优惠券为0的，用laravel的同学注意看看
        $detail = $activity_link->each(function($item,$index) use ($showUser) {

            $diffCouponQuantity = $this->diffCouponQuantity($item['config_id'],$item['quantity'],$item['activity_id'],$showUser);
            $item->title  = $this->getCouponName($item['config_id'])['name'];
            $item->number = $item['quantity'];
            $item->msg    = $diffCouponQuantity ['msg'];
            $item->diff     = $diffCouponQuantity ['diff'];
            $item->code     = $diffCouponQuantity ['code'];
        })->toArray();

        if(count($detail) == 1){
            foreach($detail as $val){
                if($val['diff'] == 1 && $val['code'] == '400'){
                    throw new \Exception($detail[0]['msg']);
                }
            }

        }

        $collection_coupon = collect($detail);
        $collection_coupon = $collection_coupon->where('diff', '<=' ,'0');    //去除优惠券剩余数量为0，或者领取优惠券数量-剩余数量 > 0

    }
    //判断活动开始时间与优惠券开始时间
    $act_coupon = ActivityCouponBaseModel::where('activity_id',$activity['activity_id'])->first();
    $check_time = $this-> checkCouponTime($act_coupon['start_time'],$activity_link);
    if($check_time == 'error'){
        throw new \Exception("优惠券领取时间未开始,暂不可领取");
    }

    //领取活动有以下几种情况
    //1: 活动已结束
    if($activity['end_time'] < date("Y-m-d H:i:s") || $activity['status'] == 1){ $result = [ 'code' => 1,
        ];
        return $result;
    }

    //6 活动为开始时
    if($activity['start_time'] > date("Y-m-d H:i:s") || $activity['status'] == 1){
        $result = [
            'code' => 6,
        ];
        return $result;

    }

    $checkUser = $this->haveUser($params['mobile']);  //检查是新用户，还是老用户 根据自己的业务需求做，这个方法就不贴了
    //2: 活动为新用户领取，而领取的用户是老用户
    if($activity['user_type'] == 1 && !empty($checkUser)){
        $result = [
            'code' => 2,
        ];
        return $result;
    }

    //3：活动为老用户领取，而领取的用户是新用户
    if($activity['user_type']==2 && empty($checkUser)){
        $result = [
            'code' => 3,
        ];
        return $result;
    }


    //4：优惠券是否领取完
    $coupon = $this->getCouponExpire($collection_coupon,$params['mobile']);  //这里提示有一个优惠券列表，根据自己的业务需求做，这个方法就不贴了
    //return $coupon;
    if($coupon == 1){
        $result = [
            'code' => 4,
        ];
        return $result;
    }

    //5：已领取过优惠券提示
    $userCoupon = '';
    $userRate = '';
    if(!empty($checkUser)){
        //user存在则为老用户，再检查是否领取过
        $userCoupon = $this->getUserCoupon($collection_coupon,$checkUser['user_id']);
        $userRate = $this->getUserCouponRate($checkUser['user_id'],$activity['activity_id']);
    }else{
        //新用户，检查是否注册过
        $var_user = UserBaseModel::where('user_name',$params['mobile'])->first();
        if(!empty($var_user)){
            $userCoupon = $this->getUserCoupon($collection_coupon,$var_user['user_id']);
            $userRate = $this->getUserCouponRate($var_user['user_id'],$activity['activity_id']);
        }
    }

    //return $userRate;

    if($userCoupon == 1){
        $result = [
            'code' => 5,
            'phone'=> $str_mobile,
            'coupon' => $userRate,
            'is_get' => false,
        ];
        return $result;
    }

    //5：领取成功
    //如果活动规定是新老用户0，新用户1，老用户2
    $getCouponSuccess = $this->getCouponSuccess($activity['user_type'],$checkUser,$collection_coupon,$params['mobile']);
    //return $getCouponSuccess;
    if($getCouponSuccess['status'] == 200){
        $result = [
            'code' => 5,
            'phone'=> $str_mobile,
            'coupon' => $getCouponSuccess['result'][0],
            'is_get' => true,
        ];
        return $result;
    }


}

/**
 * Function:用户领取活动
 * Author:cyw0413
 * @param $user_type
 */
public function getCouponSuccess($user_type,$user,$coupon,$mobile)
{
    if(count($coupon) > 0){

        switch ($user_type){
            case 1:
                //新用户领取，如果从来没注册过就要新增用户
                $res = $this->addUser($mobile,$coupon);  
                return [
                    'result' => $res,
                    'status' => 200
                ];
                break;
            case 2:
                //老用户领取
                $res = $this->insertUserCoupon($user,$coupon);
                return [
                    'result' => $res,
                    'status' => 200
                ];
                break;
            default:
                //新老用户领取,判断是新用户还是老用户,这里的$user是有无配送单，有则为老用户；
                if(empty($user)){
                    $res = $this->addUser($mobile,$coupon);
                }else{

                    $res = $this->insertUserCoupon($user,$coupon);  //老用户，直接发放优惠券
                }
                return [
                    'result' => $res,
                    'status' => 200
                ];
                break;
        }
    }else{
        throw new \Exception("优惠券不存在或者已经停用");
    }


}