<?php

namespace App;

class Engine
{
	protected $_config, $_driver;

	public function __construct(\App\Configuration $config, \App\ILayoutDriver $driver)
	{
		$this->_config = $config;
		$this->_driver = $driver;
	}

	public function layout()
	{
		foreach ($this->_config->getLayouts() as $layout_name=>$layout)
		{
			$screens = $layout->getScreenNames();
			$all_screens = true;
			foreach ($screens as $screen_name)
			{
				if (!$this->_config->getScreen($screen_name)->isConnected())
				{
					$all_screens = false;
					break;
				}
			}
			if (!$all_screens)
			{
				continue;
			}

			$layout->execute($this->_config, $this->_driver);
			break;
		}

	}
}