<?php
namespace app\admin\controller;
use app\common\controller\Admin;
use think\Request;
use think\Loader;
use think\Db;
// 书币卷管理
class Bookcode extends Admin{

    public function index(){
        $data = db('book_roll')->order('id desc')->select();
        $this->assign('data',$data);
        $this->setMeta('书币卷列表');
        return $this->fetch();
    }

    public function add(){
        $data = input('');
        if($data){
            $is = db('book_roll')->where('money',$data['money'])->value('id');
            if($is){
                exit(json_encode(array('status'=>2,'reg'=>'已存在相同优惠券')));
            }
            $arr = array(
                'money'=>$data['money'],
                'addtime'=>time()
            );
            $id = db('book_roll')->insertGetId($arr);
            if($id){
                $url = config('web_site_url')."/bookroll?id=".$id;
                $code = $this->getCode($url);
                db('book_roll')->where('id',$id)->update(['code'=>$code]);
                exit(json_encode(array('status'=>1,'reg'=>'添加成功'))); 
            }else{
                exit(json_encode(array('status'=>2,'reg'=>'添加失败'))); 
            }

        }else{
            $this->setMeta('添加书币卷');
            return $this->fetch(); 
        }

    }

    // 删除券
    public function del(){
        $id = input('id');
        $code = db('book_roll')->where('id',$id)->value('code');
        $res = db('book_roll')->delete($id);
        if($res){
            @unlink(substr($code,25,100));
            exit(json_encode(array('status'=>1,'reg'=>'删除成功'))); 
        }else{
            exit(json_encode(array('status'=>2,'reg'=>'错误'))); 
        }
    }

    // 通过连接生成2维码
    public function getCode($link){
        import("Qrcode", EXTEND_PATH,'.php');
        $value = $link;
        $errorCorrectionLevel = 'L'; //容错级别
        $matrixPointSize = 6; //生成图片大小
        $filename = 'public/qrcode/'.time().rand(10000,9999999).'.png';
        $qrcode = new \Qrcode;
        $qrcode->png($value,$filename , $errorCorrectionLevel, $matrixPointSize, 2);
        $request = Request::instance();
        $domain = $request->domain();
        $imgurl = $domain.'/'.$filename;
        return $imgurl;   
    }

}