<?php
/**
 * NoNumber Framework Helper File: Licenses
 *
 * @package         NoNumber Framework
 * @version         14.11.8
 *
 * @author          Peter van Westen <peter@nonumber.nl>
 * @link            http://www.nonumber.nl
 * @copyright       Copyright © 2014 NoNumber All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

defined('_JEXEC') or die;

class nnLicenses
{
	public static $instance = null;

	public static function getInstance()
	{
		if (!self::$instance)
		{
			self::$instance = new NoNumberLicenses;
		}

		return self::$instance;
	}
}

class NoNumberLicenses
{
	function getMessage($name = '', $check = 1)
	{
		if (!$name)
		{
			return '';
		}

		$alias = preg_replace('#[^a-z]#', '', strtolower($name));

		if ($check)
		{
			$type = $this->getVersionType($alias);
			if ($type == 'pro')
			{
				return '';
			}
		}

		$text = html_entity_decode(JText::sprintf('NN_USING_FREE_VERSION', JText::_($name)), ENT_COMPAT, 'UTF-8');

		$html = array();
		$html[] = '<div class="clearfix"></div>';
		$html[] = '<div class="alert" style="text-align:center;">';
		$html[] = $text;
		$html[] = ': <a href="http://www.nonumber.nl/go-pro?ext=' . $alias . '" target="_blank"><em>';
		$html[] = html_entity_decode(JText::_('NN_GO_PRO'), ENT_COMPAT, 'UTF-8');
		$html[] = '</em></a>';
		$html[] = '</div>';

		return implode('', $html);
	}

	/**
	 * Return an empty extension item
	 */
	function getVersionType($element)
	{
		jimport('joomla.filesystem.file');

		switch ($element)
		{
			case 'advancedmodulemanager':
				$element = 'advancedmodules';
				break;
			case 'nonumberextensionmanager':
				$element = 'nonumbermanager';
				break;
			case 'whatnothing':
				$element = 'what-nothing';
				break;
		}
		$file = '';
		$xml = '';

		// Components
		if (!$file)
		{
			if (JFile::exists(JPATH_ADMINISTRATOR . '/components/com_' . $element . '/' . $element . '.xml'))
			{
				$xml = JPATH_ADMINISTRATOR . '/components/com_' . $element . '/' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_SITE . '/components/com_' . $element . '/' . $element . '.xml'))
			{
				$xml = JPATH_SITE . '/components/com_' . $element . '/' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_ADMINISTRATOR . '/components/com_' . $element . '/com_' . $element . '.xml'))
			{
				$xml = JPATH_ADMINISTRATOR . '/components/com_' . $element . '/com_' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_SITE . '/components/com_' . $element . '/com_' . $element . '.xml'))
			{
				$xml = JPATH_SITE . '/components/com_' . $element . '/com_' . $element . '.xml';
			}
			if ($xml)
			{
				$file = $xml;
			}
		}

		// System Plugins
		if (!$file)
		{
			if (JFile::exists(JPATH_PLUGINS . '/system/' . $element . '/' . $element . '.xml'))
			{
				$xml = JPATH_PLUGINS . '/system/' . $element . '/' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_PLUGINS . '/system/' . $element . '.xml'))
			{
				$xml = JPATH_PLUGINS . '/system/' . $element . '.xml';
			}
			if ($xml)
			{
				$file = $xml;
			}
		}

		// Editor Button Plugins
		if (!$file)
		{
			if (JFile::exists(JPATH_PLUGINS . '/editors-xtd/' . $element . '/' . $element . '.xml'))
			{
				$xml = JPATH_PLUGINS . '/editors-xtd/' . $element . '/' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_PLUGINS . '/editors-xtd/' . $element . '.xml'))
			{
				$xml = JPATH_PLUGINS . '/editors-xtd/' . $element . '.xml';
			}
			if ($xml)
			{
				$file = $xml;
			}
		}
		// Modules
		if (!$file)
		{
			if (JFile::exists(JPATH_ADMINISTRATOR . '/modules/mod_' . $element . '/' . $element . '.xml'))
			{
				$xml = JPATH_ADMINISTRATOR . '/modules/mod_' . $element . '/' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_SITE . '/modules/mod_' . $element . '/' . $element . '.xml'))
			{
				$xml = JPATH_SITE . '/modules/mod_' . $element . '/' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_ADMINISTRATOR . '/modules/mod_' . $element . '/mod_' . $element . '.xml'))
			{
				$xml = JPATH_ADMINISTRATOR . '/modules/mod_' . $element . '/mod_' . $element . '.xml';
			}
			else if (JFile::exists(JPATH_SITE . '/modules/mod_' . $element . '/mod_' . $element . '.xml'))
			{
				$xml = JPATH_SITE . '/modules/mod_' . $element . '/mod_' . $element . '.xml';
			}
			if ($xml)
			{
				$file = $xml;
			}
		}

		$type = 'old';
		if ($file)
		{
			$xml = JApplicationHelper::parseXMLInstallFile($file);
			if ($xml && isset($xml['version']))
			{
				if (stripos($xml['version'], 'FREE') !== false)
				{
					$type = 'free';
				}
				else if (stripos($xml['version'], 'PRO') !== false)
				{
					$type = 'pro';
				}
			}
		}

		return $type;
	}
}
