<?php

class backup
{
    public static function create()
    {
        try {
            $nameNewFolder = date("Ymd-His");
            $newFolder = "/" . DIR_TEMP . $nameNewFolder;
            mkdir($newFolder, 0777);
            self::dumpMysql($newFolder);
            file::copyFolder("/" . DIR_DATAS, $newFolder . "/datas");
            $localZip = file::zip($newFolder, DIR_TEMP . $nameNewFolder);
            file::deleteFolder($newFolder);
            rename($localZip, DIR_BACKUP . $nameNewFolder . ".zip");
            return TRUE;
        } catch (Exception $ex) {
            return FALSE;
        }
    }

    public static function restore(string $_zip)
    {
        $tmpZip = str_replace(DIR_BACKUP, DIR_TEMP, $_zip);
        $tmpDatas = date("Ymd-His") . "-datas";
        copy($_zip, $tmpZip);
        $folder = file::unzip($tmpZip, DIR_TEMP); 
        if(self::dumpMysqlRestore(DIR_TEMP . $folder . "/" . DB_NAME . ".Mysql")){
            rename(DIR_DATAS, DIR_TEMP . $tmpDatas);
            file::copyFolder(DIR_TEMP . $folder . "/datas", DIR_DATAS);
            if(is_dir(DIR_DATAS)){
                file::deleteFolder(DIR_TEMP . $tmpDatas);
                unlink($tmpZip);
                file::deleteFolder(DIR_TEMP . $folder);
            }
            return TRUE;
        }
        return FALSE;
    }

    public static function dumpMysql(string $_dir)
    {
        $backupFile = DB_NAME . ".Mysql";
        $command = "mysqldump --opt -h " . DB_HOST . " -u " . DB_USER . " -p" . DB_PASS . " " . DB_NAME . " > " . $_dir . "/" . $backupFile;
        try {
            system($command);
            return $backupFile;
        } catch (Exception $ex) {
            return FALSE;
        }
    }

    public static function dumpMysqlRestore(string $_backupFile)
    {
        $command = "mysql -h " . DB_HOST . " -u " . DB_USER . " -p" . DB_PASS . " " . DB_NAME . " < " . $_backupFile;
        try {
            system($command);
            return TRUE;
        } catch (Exception $ex) {
            return FALSE;
        }
    }

    public static function jsonRestore()
    {
        json::create("salaries");
        json::create("excel");
        json::create("excel-proweb");
        json::create("events");
        json::create("users");
        json::create("salaries-proweb");
    }
}