<?php
namespace ModulesGarden\Servers\ProxmoxVps\Core\Configuration\Addon\Update;

use ModulesGarden\Servers\ProxmoxVps\Core\ModuleConstants;
use ModulesGarden\Servers\ProxmoxVps\Core\DependencyInjection;
use ModulesGarden\Servers\ProxmoxVps\Core\ServiceLocator;

/**
 * Description of PatchManager
 *
 * @author Rafał Ossowski <rafal.os@modulesgarden.com>
 */
class PatchManager
{
    
    protected $updatePath;
    
    protected $updateFiles = [];
        
    public function __construct()
    {
        $this->updatePath = ModuleConstants::getModuleRootDir() . DS . "app" . DS . "Configuration" . DS . "Addon" . DS . "Update" . DS . "Patch";
        $this->loadUpdatePath();
    }
    
    public function run($newVersion, $oldVersion)
    {
        $fullPath = $this->getUpdatePath();
        array_map(function ($version, $fileName) use($newVersion, $oldVersion, $fullPath)
        {
            if ($this->checkVersion($newVersion, $oldVersion, $version))
            {
                try
                {
                    $className = ModuleConstants::getRootNamespace() . "\App\Configuration\Addon\Update\Patch\\" . $fileName;
                    DependencyInjection::create($className)->setVersion($version)->execute();
                }
                catch (\Exception $exc)
                {
                    ServiceLocator::call("errorManager")
                        ->addError(
                            self::class,
                            $exc->getMessage(),
                            [
                                "newVersion"    => $newVersion,
                                "oldVersion"    => $oldVersion,
                                "updateVersion" => $version,
                                "fullFileName"  => $fullPath . DS . $fileName . ".php"
                            ]
                    );
                }
                
            }
        },
        array_keys($this->getUpdateFiles()),
        $this->getUpdateFiles()
        );
        
        return $this;
    }
    
    
    protected function checkVersion($newVersion, $oldVersion, $fileVersion)
    {
        if (version_compare($oldVersion, $fileVersion, "<"))
        {
            return true;
        }
        
        return false;
    }

    protected function getUpdatePath()
    {
        return $this->updatePath;
    }
    
    protected function getUpdateFiles()
    {
        return $this->updateFiles;
    }

    protected function loadUpdatePath()
    {
        $files = scandir($this->getUpdatePath(), 1);
        
        if (count($files) != 0)
        {
            foreach ($files as $file)
            {
               if ($file !== "." && $file !== "..")
               {
                   $version = $this->generateVersion($file);
                   $this->updateFiles[$version] = explode(".", $file)[0];
               }
            }
        }
    }
    
    protected function generateVersion($fileName)
    {
        $name = explode('.', $fileName)[0];
        return str_replace(["M","P"],".",substr($name,1));
    }
}