<?php
    require(__DIR__.'/vendor/autoload.php');
    // Using Medoo namespace
    use Medoo\Medoo;
    if(file_exists(__DIR__.'/database.conf')){
        $use_mysql = true;
    }else{
        $use_mysql = false;
    }

    if($use_mysql){
        $conf = require(__DIR__.'/database.conf');

        $database = new Medoo($conf);
     
        $url = htmlspecialchars($_GET['url']);
        $exist = $database->get('image', '*', ['url' => $url]);
    }

    if($use_mysql && $exist && file_exists($exist['file_path'])){
        //直接输出图片, 更新计数
        $database->update("image", [
            'count[+]' => 1,
        ], 
        ['id' => $exist['id']]
    );
        header('Content-type: image/jpeg');
        echo file_get_contents($exist['file_path']);
        exit;
    }else{
        include 'Snoopy.class.php';
        //获取url的扩展名
        $file_name = pathinfo($url)['basename'];
        $snoopy = new \Lain\snoopy;
        $snoopy->fetch($url);
        $html_code = $snoopy->results;
        //获取url的扩展名
        $file_path = './cache/'.$file_name;
        file_put_contents($file_path, $html_code);
        if($use_mysql && empty($exist)){
            //保存到数据库
            $database->insert("image", [
                'url' => $url,
                'file_path' => $file_path,
                'time' => time()
            ]);
        }
        header('Content-type: image/jpeg');
        echo $html_code;
    }
	
?>