<?php

class file
{
    public static function record(array $_temp)
    {
        $md5 = md5_file($_temp["tmp_name"]);
        if(copy($_temp["tmp_name"], DIR_DATAS_FILES . $md5)){
            db::query("INSERT INTO ". DB_T_FILES ." (id, name, size, id_user) VALUES (:id, :name, :size, :id_user)");
            db::bind(':id', $md5);
            db::bind(':name', $_temp['name']);
            db::bind(':size', $_temp['size']);
            db::bind(':id_user', session::getId());

            try {
                db::execute();
                return $md5;
            } catch (Exception $ex) {
                unlink(DIR_DATAS_FILES . $md5);
                alert::recError("Erreur #record sur l'import du fichier " . $_temp['name']);
                return FALSE;
            }
        }
    }

    public static function delete(string $_id)
    {
        if (file_exists(DIR_DATAS_FILES . $_id)) {
            if(unlink(DIR_DATAS_FILES.$_id)){
                db::query("DELETE FROM ". DB_T_FILES ." WHERE id = :id");
                db::bind(':id', $_id);

                try {
                    db::execute();
                    return TRUE;
                } catch (Exception $ex) {
                    alert::recError("Erreur sur la suppression du fichier");
                    return FALSE;
                }
            } else {
                alert::recError("Erreur sur la suppression du fichier");
                return FALSE;
            }
        } else {
            return FALSE;
        }
    }

    public static function download(string $_id)
    {
        if (file_exists(DIR_DATAS_FILES . $_id)) {
            return DIR_DATAS_FILES . $_id;
        } else {
            return FALSE;
        }
    }

    public static function cleanFilesByOrder(string $_path, int $_nbFiles = 5)
    {
        $return = TRUE;
        $cpt = 0;
        $files = array();
        $dir = new DirectoryIterator($_path);
        $blackList = array(
            ".",
            "..",
            "index.html",
            "index.php"
        );
    
        foreach ($dir as $fileinfo) {
            $files[$fileinfo->getMTime()] = $fileinfo->getFilename();
        }
    
        krsort($files);
    
        foreach($files as $file) {
            if (!in_array($file, $blackList)) {
                if($cpt++ >= $_nbFiles){
                    $return = (unlink($_path . $file)) ? TRUE : FALSE;
                }
            }
        }

        return $return;
    }

    public static function cleanFilesByTime(string $_path, int $_limitTime = 24*3600) // 24*3600 pour une journée
    {
        if ($handle = opendir($_path)) {
            while (false !== ($file = readdir($handle))) { 
                $filelastmodified = filemtime($_path . $file);
                if((time() - $filelastmodified) > $_limitTime)
                {
                    unlink($_path . $file);
                }

            }
            closedir($handle); 
        }
    }

    public static function compress(string $_file){
        $command = "gzip " . $_file;
        try {
            system($command);
            return $_file.".gz";
        } catch (Exception $ex) {
            return FALSE;
        }
    }

    public static function decompress(string $_zip, bool $_delete = FALSE){
        $command = "gunzip " . $_zip;
        try {
            system($command);
            ($_delete == TRUE) ? unlink($_zip) : "";
            return explode(".gz", $_zip)[0];
        } catch (Exception $ex) {
            return FALSE;
        }
    }

    public static function copyFolder(string $_folder, string $_target)
    {
        if($dir = opendir($_folder)){
            mkdir($_target);
            while (($file = readdir($dir))) {
                if (($file != '.') && ($file != '..')) {
                    if (is_dir($_folder . '/' . $file)) {
                        self::copyFolder($_folder . '/' . $file, $_target . '/' . $file);
                    } else {
                        copy($_folder . '/' . $file, $_target . '/' . $file);
                    }
                }
            }
            closedir($dir);
        }    
    } 
}