<?php

namespace MGModule\DNSManager2\mgLibs\custom\helpers;
use \MGModule\DNSManager2 as main;
use \MGModule\DNSManager2\models\custom\zone;
use \MGModule\DNSManager2\mgLibs\custom\dns;

class ImportExportFileHelper 
{
    public static $skipFileList = array(
        '.htaccess',
        'index.html'
    );
    
    public static function exportZoneToFile($zoneId, $path, $fileName = false)
    {
        $zone = new zone\Zone($zoneId);
        $newFileName = $fileName ? $fileName : self::generateNewExportFileName($zone->name);
        $fileManager = new main\mgLibs\custom\FileManager($path);
        
        $importInfo = array();
        $importInfo['zoneName'] = $zone->name;
        
        $module = $zone->getModule();
        if(!$module->zoneExists())
        {
            throw new \Exception(main\mgLibs\lang::T('you_cannot_edit_this_zone_because_it_is_terminated_on_server'));
        }
        else
        {
            $importInfo['zoneRecords'] = $module->getRecords();
        }
        
        return $fileManager->saveDataToFile(json_encode($importInfo, JSON_PRETTY_PRINT), $newFileName);
    }
    
    public static function listFilesForZone($zone, $fileManager)
    {
        $files = $fileManager->getFilesFromStorage();
        foreach($files as $key => $filename)
        {
            $nameParts = explode('_', $filename);
            if($nameParts[0] !== $zone->name  || in_array($filename, self::$skipFileList))
            {
                unset($files[$key]);
            }
        }
        
        return $files;
    }
    
    public static function loadFileContent($path, $fileName)
    {
        if(!$fileName)
        {
            throw new \Exception('You have to select a file');
        }
        
        $fileManager = new main\mgLibs\custom\FileManager($path);
        
        $cont = $fileManager->loadFileContent($fileName);
        if(!$cont)
        {
            return false;
        }
        
        $backupZone = json_decode($cont);

        return $backupZone;
    }

    public static function generateClientFileName($clientId)
    {
        return date("Y.m.d_H.i.s").'_'. $clientId;
    }

    public static function generateNewExportFileName($associateName)
    {
        return $associateName.'_'.date("Y.m.d_H.i.s");
    }
    
    public static function bulkImportZoneToFile($zone, $path, $fileName = false)
    {
 
        $newFileName = $fileName ? $fileName : self::generateNewExportFileName($zone->name);
        $fileManager = new main\mgLibs\custom\FileManager($path);
        
        $importInfo = array();
        $importInfo['zoneName'] = $zone->name;
        
        $module = $zone->getModule();
        if(!$module->zoneExists())
        {
            throw new \Exception(main\mgLibs\lang::T('you_cannot_edit_this_zone_because_it_is_terminated_on_server'));
        }
        else
        {
            $importInfo['zoneRecords'] = $module->getRecords();
        }


        
        $content = $fileManager->loadFileContent($newFileName);
        $decodedContent = json_decode($content);

        if(!$decodedContent)
        {
            $newContent = array();
            $newContent[$zone->name] = $importInfo;
        }
        else
        {
            $decodedContent->{$zone->name} = $importInfo;
            $newContent = $decodedContent;
        }
 
        
        return $fileManager->saveDataToFile(json_encode($newContent, JSON_PRETTY_PRINT), $newFileName, true);
    }   
    
    public static function listFilesForBulkExport($fileManager, $serverName = false, $order = 0)
    {
        $files = $fileManager->getFilesFromStorage($order);
        foreach($files as $key => $filename)
        {
            $nameParts = explode('_', $filename);
            if($serverName && $nameParts[0] !== $serverName)
            {
                unset($files[$key]);
            }
            
            if($filename === '.' || $filename === '..' || in_array($filename, self::$skipFileList))
            {
                unset($files[$key]);                
            }
        }
        
        return $files;        
    }
    
    public static function listBulkExportZones($fileName, $path)
    {
        $fileManager = new main\mgLibs\custom\FileManager($path);
        
        $content = $fileManager->loadFileContent($fileName);
        $decodedContent = json_decode($content);
        
        return $decodedContent;
    }
}