mendian/app/api/controller/Prize.php

<?php
namespace app\api\controller;


use EasyWeChat\Factory;
use think\facade\Db;

class Prize extends BaseApi
{
	
	/**
	 * 奖品列表
	 * */
    public function prizeList(){
        $host = "https://".request()->host().'/';
        //echo "<pre>";print_r(request()->host());exit;
        $list = Db::table('v4prize')->field('id,prize_name,img')->order('id desc')->select()->toArray();
        foreach ($list as $k=>$v){
            $list[$k]['img'] = $host.$v['img'];
        }
        return $this->response($this->success($list));
    }

    /**
     * 抽奖
     * */
    public function luckDraw(){
        $token = $this->checkToken();
        if ($token['code'] < 0) return $this->response($token);
        $uid = $this->member_id;
        $draw_num = 3;
        //echo "<pre>";print_r($uid);exit;
        //可抽奖次数
        $sign_days_series = Db::table('v4member')->where(['member_id'=>$uid])->value('sign_days_series');
        if ($sign_days_series > 0){
            $end_log_id = Db::table('v4prize_user')->where(['uid'=>$uid])->order('id desc')->value('end_log_id');
            $end_log_id = $end_log_id?$end_log_id:0;
            $signin_list = Db::table('v4member_log')->where(['member_id'=>$uid,'action'=>'membersignin'])->where('id','>',$end_log_id)->order('id desc')->limit(0,$sign_days_series)->select()->toArray();
            $last_names = array_column($signin_list,'id');
            array_multisort($last_names,SORT_ASC,$signin_list);
            if(count($signin_list) < $draw_num){
                return $this->response($this->error('','暂无抽奖次数'));
            }
        }else{
            return $this->response($this->error('','暂无抽奖次数'));
        }
        $prize_arr  = Db::table('v4prize')->select()->toArray();
        foreach ($prize_arr as $key => $val) {
            $arr[$val['id']] = $val['probability'];//概率数组
        }
        $rid = $this->get_rand($arr); //根据概率获取奖项id

        $prize_info = Db::table('v4prize')->where(['id'=>$rid])->find();
        $end_log_id = $signin_list[$draw_num-1]['id'];
        $data['uid'] = $uid;
        $data['pid'] = $rid;
        $data['prize_name'] = $prize_info['prize_name'];
        $data['type'] = $prize_info['type'];
        $data['num'] = $prize_info['num'];
        $data['end_log_id'] = $end_log_id;
        $data['add_time'] = date('Y-m-d H:i:s',time());
        //echo "<pre>";print_r($data);exit;
        Db::table('v4prize_user')->insert($data);
        if($prize_info['type'] == 1){
            Db::table('v4member')->where(['member_id'=>$uid])->inc('point',$prize_info['num'])->update();
        }elseif ($prize_info['type'] == 2){
            Db::table('v4member')->where(['member_id'=>$uid])->inc('currency',$prize_info['num'])->update();
        }
        return $this->response($this->success(['id'=>$rid],'成功'));
    }


    //计算中奖概率
    function get_rand($proArr) {
        $result = '';
        //概率数组的总概率精度
        $proSum = array_sum($proArr);
        // var_dump($proSum);
        //概率数组循环
        foreach ($proArr as $key => $proCur) {
            $randNum = mt_rand(1, $proSum);  //返回随机整数

            if ($randNum <= $proCur) {
                $result = $key;
                break;
            } else {
                $proSum -= $proCur;
            }
        }
        unset ($proArr);
        return $result;
    }

    /**
     * 抽奖次数
     * */
    public function drawNum(){
        $token = $this->checkToken();
        if ($token['code'] < 0) return $this->response($token);
        $uid = $this->member_id;
        $draw_num = 3;
        $sign_days_series = Db::table('v4member')->where(['member_id'=>$uid])->value('sign_days_series');
        if ($sign_days_series > 0){
            $end_log_id = Db::table('v4prize_user')->where(['uid'=>$uid])->order('id desc')->value('end_log_id');
            $end_log_id = $end_log_id?$end_log_id:0;
            $signin_list = Db::table('v4member_log')->where(['member_id'=>$uid,'action'=>'membersignin'])->where('id','>',$end_log_id)->order('id desc')->limit(0,$sign_days_series)->select()->toArray();
            $last_names = array_column($signin_list,'id');
            array_multisort($last_names,SORT_ASC,$signin_list);
            $num = floor(count($signin_list)/$draw_num);
        }else{
            $num = 0;
        }
        return $this->response($this->success(['num'=>$num],'成功'));
    }

    /**
     * 抽奖记录
     * */
    public function drawList(){
        $token = $this->checkToken();
        if ($token['code'] < 0) return $this->response($token);
        $uid = $this->member_id;
        $list = Db::table('v4prize_user')->field('id,prize_name,type,num,add_time')->where(['uid'=>$uid])->select()->toArray();
        return $this->response($this->success($list,'成功'));
    }

    /**
     * 抽奖配置
     * */
    public function rule(){
        $rule = Db::table('v4config_md')->where(['type'=>'prize','name'=>'rule'])->value('value');
        $data['rule'] = $rule;
        return $this->response($this->success($data,'成功'));
    }

    /**
     * 补签卡信息
     * */
    public function signCardInfo(){
        $info = Db::table('v4config_md')->where(['type'=>'prize'])->select();
        foreach ($info as $v){
            $info[$v['name']] = $v['value'];
        }
        $data['sign_card_money'] = $info['sign_card_money'];
        $data['sign_card_rule'] = $info['sign_card_rule'];
        return $this->response($this->success($data,'成功'));
    }

    /**
     * 购买补签卡
     * */
    public function buySignCard(){
        $token = $this->checkToken();
        if ($token['code'] < 0) return $this->response($token);
        $uid = $this->member_id;
        $user_info = Db::table('v4member')->field('weapp_openid')->where(['member_id'=>$uid])->find();
        $sign_card_money = Db::table('v4config_md')->where(['type'=>'prize','name'=>'sign_card_money'])->value('value');
        if ($sign_card_money <= 0){
            return $this->response($this->error('','暂时无法购买'));
        }
        $app = Factory::payment(Config('mini_program'));
        $jssdk = $app->jssdk;
        $result = $app->order->unify([
            'body' => '入驻商家',
            'out_trade_no' => $this->create_order_no(),
            'total_fee' => $sign_card_money*100,
            'notify_url' => 'https://'.$_SERVER['HTTP_HOST'].'/api/prize/sign_notify',
            'trade_type' => 'JSAPI',
            'openid' => $user_info['weapp_openid'],
        ]);
        if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') {
            $prepayId = $result['prepay_id'];
            $json = $jssdk->sdkConfig($prepayId);
            return $this->response($this->error(['config'=>$json],'暂时无法购买'));
        } else {
            return $this->response($this->error('','支付失败'));
        }

    }

    /**
     * 订单号
     * */
    function create_order_no() {
        $order_no = date('Ymd').substr(time(), -5) . substr(microtime(), 2, 5) . sprintf('%02d', rand(1000, 9999));
        return $order_no;
    }

}