kge/application/api/controller/Grabgift.php

<?php

namespace app\api\controller;

use app\common\controller\Api;
use think\Db;
use Redis;
/**
 * 示例接口
 */
class Grabgift extends Api
{

    protected $noNeedLogin = [];
    // 无需鉴权的接口,*表示全部
    protected $noNeedRight = ['*'];

    protected $redis;

    public function __construct()
    {
        parent::__construct();

        //redis
        $redis = new Redis();
        $redisconfig = config("redis");
        $redis->connect($redisconfig["host"], $redisconfig["port"]);
        if ($redisconfig['redis_pwd']) {
            $redis->auth($redisconfig['redis_pwd']);
        }
        if($redisconfig['redis_selectdb'] > 0){
            $redis->select($redisconfig['redis_selectdb']);
        }
        $this->redis = $redis;

    }

    //首页
    public function index()
    {
        $info = Db::name('grabgift')->where('status',0)->order('id desc')->find();

        if(empty($info)){
            $grabgift_data = [
                'price'      => config('site.grabgift_price'),
                'gift_id'    => config('site.grabgift_giftid'),
                'status'     => 0,
                'grabtime'   => 0,
                'createtime' => time(),
            ];
            $grabgift_data['id'] = Db::name('grabgift')->insertGetId($grabgift_data);
            $info = $grabgift_data;

            //redis标记状态,未开奖
            $this->redis->set('kge_grabgift_'.$grabgift_data['id'],0);
        }

        $userlist = Db::name('grabgift_log')->alias('log')
            ->field('log.user_id,user.nickname,user.avatar')
            ->join('user','log.user_id = user.id','LEFT')
            ->where('log.grab_id',$info['id'])->order('log.id asc')->select();
        $userlist = list_domain_image($userlist,['avatar']);

        $result = [
            'info' => $info,
            'userlist' => $userlist,
        ];

        $this->success(1,$result);
    }

    //立即加入
    public function joinin(){
        $grab_id = input('grab_id',0);
        $kai_count = 5;

        //先用redis看开奖状态
        $status = $this->redis->get('kge_grabgift_'.$grab_id);
        //dump($status);
        if($status === false){
            $this->error('此期已开奖');
        }

        if($status == 1){
            $this->redis->del('kge_grabgift_'.$grab_id);
            $this->error('此期已经开奖了');
        }

        //先加入，再去重
        $is_joined = $this->redis->hSet('kge_grabgift_data_'.$grab_id,$this->auth->id,$this->auth->id);
        if($is_joined == 0){
            //第一次设置，返回1；二次覆盖，返回0
            $this->error('您已经参与了此期');
        }

        //数量限制
        $count = $this->redis->incr('kge_grabgift_num_'.$grab_id);
        if ($count > $kai_count) {
            $this->redis->decr('kge_grabgift_num_'.$grab_id);
            $this->redis->hDel('kge_grabgift_data_'.$grab_id,$this->auth->id);
            $this->error('此期人数已满');
        }

        //扣钱
        Db::startTrans();
        $grab_info = Db::name('grabgift')->where('id',$grab_id)->find();
        $rs_wallet = model('wallet')->lockChangeAccountRemain($this->auth->id,$grab_info['price'],'-',0,'抽礼物第'.$grab_id.'期',38,'jewel');
        if($rs_wallet['status'] === false){
            Db::rollback();

            $this->redis->decr('kge_grabgift_num_'.$grab_id);
            $this->redis->hDel('kge_grabgift_data_'.$grab_id,$this->auth->id);
            $this->error($rs_wallet['msg']);
        }

        //写入日志
        $log_data = [
            'grab_id' => $grab_id,
            'user_id' => $this->auth->id,
            'price' => $grab_info['price'],
            'gift_id' => $grab_info['gift_id'],
            'createtime' => time(),
            'grabstatus' => 0,
            'grabtime' => 0,
        ];
        $log_id = Db::name('grabgift_log')->insertGetId($log_data);
        if(!$log_id){
            Db::rollback();

            $this->redis->decr('kge_grabgift_num_'.$grab_id);
            $this->redis->hDel('kge_grabgift_data_'.$grab_id,$this->auth->id);
            $this->error('参与失败');
        }

        //如果是最后一个，开奖
        if($count == $kai_count){

            $rand_data_new = [];
            $rand_data = $this->redis->hGetAll('kge_grabgift_data_'.$grab_id);
            foreach($rand_data as $uid => $val){
                $rand_data_new[] = $uid;
            }
            $zhongjiang_uid = $rand_data_new[rand(0,4)];

            //修改
            $nowtime = time();
            $rs1 = Db::name('grabgift_log')->where('grab_id',$grab_id)->update(['grabtime'=>$nowtime]);
            $rs2 = Db::name('grabgift_log')->where('grab_id',$grab_id)->where('user_id',$zhongjiang_uid)->update(['grabstatus'=>1]);
            $rs3 = Db::name('grabgift')->where('id',$grab_id)->update(['status'=>1,'grabtime'=>$nowtime]);

            //发放到背包
            $gift_info = Db::name('gift')->where('id',$grab_info['gift_id'])->find();
            if(!empty($gift_info)){
                $giftdata = [
                    'user_id'    => $this->auth->id,
                    'gift_id'    => $grab_info['gift_id'],
                    'name'       => $gift_info['name'],
                    'image'      => $gift_info['image'],
                    'gif_image'  => $gift_info['special'],
                    'value'      => $gift_info['value'],
                    'number'     => 1,
                    'get_way'    => 1,
                    'createtime' => $nowtime,
                ];
                $rs4 = Db::name('gift_back')->insertGetId($giftdata);
            }else{
                $rs4 = true;
            }

            if($rs1 === false || $rs2 === false || $rs3 === false || $rs4 === false){
                Db::rollback();

                $this->redis->decr('kge_grabgift_num_'.$grab_id);
                $this->redis->hDel('kge_grabgift_data_'.$grab_id,$this->auth->id);
                $this->error('参与失败');
            }

            //开奖了，用不到了
            $this->redis->del('kge_grabgift_num_'.$grab_id);
            $this->redis->del('kge_grabgift_data_'.$grab_id);
            $this->redis->del('kge_grabgift_'.$grab_id);
        }
        Db::commit();

        $result = [
            'grab_id'=>$grab_id,
            'count'  => $count,
            'is_finish' => $count == $kai_count ? 1 : 0,
        ];
        $this->success(1,$result);
    }

    //我的参与记录
    public function myjoinlog(){
        $userlist = Db::name('grabgift_log')->field('grab_id,grabtime,grabstatus')
            ->where('user_id',$this->auth->id)->order('id desc')->autopage()->select();

        $this->success(1,$userlist);

    }





}