<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_templates
 *
 * @copyright   Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

/**
 * @package     Joomla.Administrator
 * @subpackage  com_templates
 * @since       1.5
 */
class TemplatesModelSource extends JModelForm
{
	/**
	 * Cache for the template information.
	 *
	 * @var        object
	 */
	private $_template = null;

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @since   1.6
	 */
	protected function populateState()
	{
		jimport('joomla.filesystem.file');

		$app = JFactory::getApplication('administrator');

		// Load the User state.
		$id = $app->getUserState('com_templates.edit.source.id');

		// Parse the template id out of the compound reference.
		$temp = explode(':', base64_decode($id));
		$this->setState('extension.id', (int) array_shift($temp));

		$fileName = array_shift($temp);
		$this->setState('filename', $fileName);

		// Save the syntax for later use
		$app->setUserState('editor.source.syntax', JFile::getExt($fileName));

		// Load the parameters.
		$params = JComponentHelper::getParams('com_templates');
		$this->setState('params', $params);
	}

	/**
	 * Method to get the record form.
	 *
	 * @param   array      $data        Data for the form.
	 * @param   boolean    $loadData    True if the form is to load its own data (default case), false if not.
	 * @return  JForm    A JForm object on success, false on failure
	 * @since   1.6
	 */
	public function getForm($data = array(), $loadData = true)
	{
		$app = JFactory::getApplication();

		// Codemirror or Editor None should be enabled
		$db = JFactory::getDbo();
		$query = $db->getQuery(true)
			->select('COUNT(*)')
			->from('#__extensions as a')
			->where('(a.name =' . $db->quote('plg_editors_codemirror') . ' AND a.enabled = 1) OR (a.name =' . $db->quote('plg_editors_none') . ' AND a.enabled = 1)');
		$db->setQuery($query);
		$state = $db->loadResult();
		if ((int) $state < 1)
		{
			$app->enqueueMessage(JText::_('COM_TEMPLATES_ERROR_EDITOR_DISABLED'), 'warning');
		}

		// Get the form.
		$form = $this->loadForm('com_templates.source', 'source', array('control' => 'jform', 'load_data' => $loadData));
		if (empty($form))
		{
			return false;
		}

		return $form;
	}

	/**
	 * Method to get the data that should be injected in the form.
	 *
	 * @return  mixed  The data for the form.
	 * @since   1.6
	 */
	protected function loadFormData()
	{
		// Check the session for previously entered form data.
		$data = JFactory::getApplication()->getUserState('com_templates.edit.source.data', array());

		if (empty($data))
		{
			$data = $this->getSource();
		}

		$this->preprocessData('com_templates.source', $data);

		return $data;
	}

	/**
	 * Method to get a single record.
	 *
	 * @return  mixed  Object on success, false on failure.
	 * @since   1.6
	 */
	public function &getSource()
	{
		$item = new stdClass;
		if (!$this->_template)
		{
			$this->getTemplate();
		}

		if ($this->_template)
		{
			$fileName = $this->getState('filename');
			$client = JApplicationHelper::getClientInfo($this->_template->client_id);
			$filePath = JPath::clean($client->path . '/templates/' . $this->_template->element . '/' . $fileName);

			if (file_exists($filePath))
			{
				$item->extension_id = $this->getState('extension.id');
				$item->filename = $this->getState('filename');
				$item->source = file_get_contents($filePath);
			}
			else
			{
				$this->setError(JText::_('COM_TEMPLATES_ERROR_SOURCE_FILE_NOT_FOUND'));
			}
		}

		return $item;
	}

	/**
	 * Method to get the template information.
	 *
	 * @return  mixed  Object if successful, false if not and internal error is set.
	 * @since   1.6
	 */
	public function &getTemplate()
	{
		$pk = $this->getState('extension.id');
		$db = $this->getDbo();
		$result = false;

		// Get the template information.
		$db->setQuery(
			'SELECT extension_id, client_id, element' .
				' FROM #__extensions' .
				' WHERE extension_id = ' . (int) $pk .
				'  AND type = ' . $db->quote('template')
		);

		try
		{
			$result = $db->loadObject();
		}
		catch (RuntimeException $e)
		{
			$this->setError($e->getMessage());
			$this->_template = false;
			return false;
		}

		if (empty($result))
		{
			$this->setError(JText::_('COM_TEMPLATES_ERROR_EXTENSION_RECORD_NOT_FOUND'));
			$this->_template = false;
		}
		else
		{
			$this->_template = $result;
		}

		return $this->_template;
	}

	/**
	 * Method to store the source file contents.
	 *
	 * @param   array  The souce data to save.
	 *
	 * @return  boolean  True on success, false otherwise and internal error set.
	 * @since   1.6
	 */
	public function save($data)
	{
		jimport('joomla.filesystem.file');

		// Get the template.
		$template = $this->getTemplate();
		if (empty($template))
		{
			return false;
		}

		$dispatcher = JEventDispatcher::getInstance();
		$fileName = $this->getState('filename');
		$client = JApplicationHelper::getClientInfo($template->client_id);
		$filePath = JPath::clean($client->path . '/templates/' . $template->element . '/' . $fileName);

		// Include the extension plugins for the save events.
		JPluginHelper::importPlugin('extension');

		// Set FTP credentials, if given.
		JClientHelper::setCredentialsFromRequest('ftp');
		$ftp = JClientHelper::getCredentials('ftp');

		// Try to make the template file writeable.
		if (!$ftp['enabled'] && JPath::isOwner($filePath) && !JPath::setPermissions($filePath, '0644'))
		{
			$this->setError(JText::_('COM_TEMPLATES_ERROR_SOURCE_FILE_NOT_WRITABLE'));
			return false;
		}

		// Trigger the onExtensionBeforeSave event.
		$result = $dispatcher->trigger('onExtensionBeforeSave', array('com_templates.source', &$data, false));
		if (in_array(false, $result, true))
		{
			$this->setError($table->getError());
			return false;
		}

		$return = JFile::write($filePath, $data['source']);

		// Try to make the template file unwriteable.
		if (!$ftp['enabled'] && JPath::isOwner($filePath) && !JPath::setPermissions($filePath, '0444'))
		{
			$this->setError(JText::_('COM_TEMPLATES_ERROR_SOURCE_FILE_NOT_UNWRITABLE'));
			return false;
		}
		elseif (!$return)
		{
			$this->setError(JText::sprintf('COM_TEMPLATES_ERROR_FAILED_TO_SAVE_FILENAME', $fileName));
			return false;
		}

		// Trigger the onExtensionAfterSave event.
		$dispatcher->trigger('onExtensionAfterSave', array('com_templates.source', &$table, false));

		return true;
	}
}
