like-shop/application/api/validate/Bargain.php

<?php
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// | author: likeshop.cn.team
// +----------------------------------------------------------------------
namespace app\api\validate;
use app\common\model\BargainLaunch;
use think\Db;
use think\Validate;


class Bargain extends Validate{
    protected $rule = [
        'id'                => 'require',
        'bargain_id'        => 'require',
        'item_id'           => 'require|checkGoods',
        'url'               => 'require',
    ];
    protected $message = [
        'id.require'            => '请选择砍价订单',
        'bargain_id.require'    => '请选择活动',
        'item_id.require'       => '请选择规格',
        'url.require'           => '缺少参数',
    ];
    //砍价商品详情验证场景
    public function sceneDetail()
    {
        $this->only(['bargain_id'])
            ->append('bargain_id','checkBargain');

    }
    //发起砍价验证
    public function sceneSponsor()
    {
        $this->only(['bargain_id','item_id']);
    }
    //砍价详情验证
    public function sceneBargainDetail(){
        $this->only(['id']);
    }
    //分享验证
    public function sceneShare(){
        $this->only(['id','url'])
             ->append('id','checkBargainLaunch');
    }
    //助力验证
    public function sceneKnife(){
        $this->only(['id'])
            ->append('id','checkBnife');
    }

    //验证活动是否开启
    protected function checkBargain($value,$rule,$data){
        $now = time();
        $bargain = Db::name('bargain')
                    ->where([
                        ['id','=',$value],
                        ['del','=', 0],
                        ['activity_start_time','<',$now],
                        ['activity_end_time','>',$now],
                        ['status','=',1]
                        ])
                    ->find();

        if(empty($bargain)){
            return '该砍价活动已下架';
        }
        return true;

    }
    //验证商品库存
    protected function checkGoods($value,$rule,$data){

        $stock = Db::name('goods_item')
                    ->where(['id'=>$value])
                    ->value('stock');

        if($stock < 1){
            return '该商品库存不足';
        }
        return true;
    }

    //验证该砍价订单是否结束
    protected function checkBargainLaunch($value,$rule,$data){
        $bargain_launch = new BargainLaunch();
        $bargain_launch = $bargain_launch
                        ->where(['id'=>$value])
                        ->find();
        if($bargain_launch['launch_end_time'] <= time()){
            return '该砍价已结束';
        }
        return true;
    }

    //验证该砍价订单是否可助力
    protected function checkBnife($value,$rule,$data){
        $bargain_launch = new BargainLaunch();
        $bargain_launch = $bargain_launch
            ->where(['id'=>$value])
            ->find()->toarray();
        if(0 != $bargain_launch['status']){
            return '该砍价已结束';
        }
        if($bargain_launch['launch_end_time'] <= time()){
            return '该砍价已结束';
        }
        if($bargain_launch['user_id'] === $data['user_id']){
            return '不能助力自己的砍价活动';
        }
        if($bargain_launch['current_price'] < 0){
            return '该砍价活动已成功';
        }
        //当前活动是砍到低价，且已经低于等于活动低价时，砍价成功
        if(1 == $bargain_launch['bargain_snap']['payment_where'] && $bargain_launch['current_price'] <= $bargain_launch['bargain_price']){
            return '该砍价活动已成功';
        }
        $bargain_knife = Db::name('bargain_knife')
                        ->where(['launch_id'=>$value,'user_id'=>$data['user_id']])
                        ->find();

        if($bargain_knife){
            return '您已助力过了';
        }


        return true;
    }


}