<?php
/*
* 2007-2015 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2015 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class ThemeCore extends ObjectModel
{
	public $name;
	public $directory;
	public $responsive;
	public $default_left_column;
	public $default_right_column;
	public $product_per_page;

	const CACHE_FILE_CUSTOMER_THEMES_LIST = '/config/xml/customer_themes_list.xml';

	const CACHE_FILE_MUST_HAVE_THEMES_LIST = '/config/xml/must_have_themes_list.xml';

	const UPLOADED_THEME_DIR_NAME = 'uploaded';

	/** @var int access rights of created folders (octal) */
	public static $access_rights = 0775;
	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'theme',
		'primary' => 'id_theme',
		'fields' => array(
			'name' => array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'size' => 64, 'required' => true),
			'directory' => array('type' => self::TYPE_STRING, 'validate' => 'isDirName', 'size' => 64, 'required' => true),
			'responsive' => array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
			'default_left_column' => array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
			'default_right_column' => array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
			'product_per_page' => array('type' => self::TYPE_INT, 'validate' => 'isInt')
		),
	);

	public static function getThemes()
	{
		$themes = new PrestaShopCollection('Theme');
		$themes->orderBy('name');
		return $themes;
	}

	public static function getAllThemes($excluded_ids = false)
	{
		$themes = new PrestaShopCollection('Theme');

		if (is_array($excluded_ids) && !empty($excluded_ids))
			$themes->where('id_theme', 'notin', $excluded_ids);

		$themes->orderBy('name');
		return $themes;
	}

	/**
	 * return an array of all available theme (installed or not)
	 *
	 * @param bool $installed_only
	 * @return array string (directory)
	 */
	public static function getAvailable($installed_only = true)
	{
		static $dirlist = array();
		$available_theme = array();

		if (empty($dirlist))
		{
			$themes = scandir(_PS_ALL_THEMES_DIR_);
			foreach ($themes as $theme)
				if (is_dir(_PS_ALL_THEMES_DIR_.DIRECTORY_SEPARATOR.$theme) && $theme[0] != '.')
					$dirlist[] = $theme;
		}

		if ($installed_only)
		{
			$themes = Theme::getThemes();
			foreach ($themes as $theme_obj)
			{
				/** @var Theme $theme_obj */
				$themes_dir[] = $theme_obj->directory;
			}

			foreach ($dirlist as $theme)
				if (false !== array_search($theme, $themes_dir))
					$available_theme[] = $theme;
		}
		else
			$available_theme = $dirlist;

		return $available_theme;

	}

	/**
	 * check if a theme is used by a shop
	 *
	 * @return bool
	 */
	public function isUsed()
	{
		return Db::getInstance()->getValue('SELECT count(*)
			FROM '._DB_PREFIX_.'shop WHERE id_theme = '.(int)$this->id);
	}

	/**
	 * add only theme if the directory exists
	 *
	 * @param bool $null_values
	 * @param bool $autodate
	 * @return bool Insertion result
	 */
	public function add($autodate = true, $null_values = false)
	{
		if (!is_dir(_PS_ALL_THEMES_DIR_.$this->directory))
			return false;

		return parent::add($autodate, $null_values);
	}

	/**
	 * Checks if theme exists (by folder) and returns Theme object.
	 *
	 * @param string $directory
	 *
	 * @return bool|Theme
	 */
	public static function getByDirectory($directory)
	{
		if (is_string($directory) && strlen($directory) > 0 && file_exists(_PS_ALL_THEMES_DIR_.$directory) && is_dir(_PS_ALL_THEMES_DIR_.$directory))
		{
			$id_theme = (int)Db::getInstance()->getValue('SELECT id_theme FROM '._DB_PREFIX_.'theme WHERE directory="'.pSQL($directory).'"');

			return $id_theme ? new Theme($id_theme) : false;
		}

		return false;
	}

	public static function getInstalledThemeDirectories()
	{
		$list = array();
		$tmp = Db::getInstance()->executeS('SELECT `directory` FROM '._DB_PREFIX_.'theme');
		foreach ($tmp as $t)
			$list[] = $t['directory'];

		return $list;
	}

	public static function getThemeInfo($id_theme)
	{
		$theme = new Theme((int)$id_theme);
		$theme_arr = array();

		if (file_exists(_PS_ROOT_DIR_.'/config/xml/themes/'.$theme->directory.'.xml'))
			$config_file = _PS_ROOT_DIR_.'/config/xml/themes/'.$theme->directory.'.xml';
		elseif ($theme->name == 'default-bootstrap')
			$config_file = _PS_ROOT_DIR_.'/config/xml/themes/default.xml';
		else
			$config_file = false;

		if ($config_file)
		{
			$theme_arr['theme_id'] = (int)$theme->id;
			$xml_theme = @simplexml_load_file($config_file);

			if ($xml_theme !== false)
			{
				foreach ($xml_theme->attributes() as $key => $value)
					$theme_arr['theme_'.$key] = (string)$value;

				foreach ($xml_theme->author->attributes() as $key => $value)
					$theme_arr['author_'.$key] = (string)$value;

				if ($theme_arr['theme_name'] == 'default-bootstrap')
					$theme_arr['tc'] = Module::isEnabled('themeconfigurator');
			}
		}
		else
		{
			// If no xml we use data from database
			$theme_arr['theme_id'] = (int)$theme->id;
			$theme_arr['theme_name'] = $theme->name;
			$theme_arr['theme_directory'] = $theme->directory;
		}

		return $theme_arr;
	}

	public static function getNonInstalledTheme()
	{
		$installed_theme_directories = Theme::getInstalledThemeDirectories();
		$not_installed_theme = array();
		foreach (glob(_PS_ALL_THEMES_DIR_.'*', GLOB_ONLYDIR) as $theme_dir)
		{
			$dir = basename($theme_dir);
			$config_file = _PS_ALL_THEMES_DIR_.$dir.'/config.xml';
			if (!in_array($dir, $installed_theme_directories) && @filemtime($config_file))
			{
				if ($xml_theme = @simplexml_load_file($config_file))
				{
					$theme = array();
					foreach ($xml_theme->attributes() as $key => $value)
						$theme[$key] = (string)$value;

					if (!empty($theme))
						$not_installed_theme[] = $theme;
				}
			}
		}

		return $not_installed_theme;
	}

	/**
	 * update the table PREFIX_theme_meta for the current theme
	 * @param array $metas
	 * @param bool  $full_update If true, all the meta of the theme will be deleted prior the insert, otherwise only the current $metas will be deleted
	 *
	 */
	public function updateMetas($metas, $full_update = false)
	{
		if ($full_update)
			Db::getInstance()->delete('theme_meta', 'id_theme='.(int)$this->id);

		$values = array();
		if ($this->id > 0)
		{
			foreach ($metas as $meta)
			{
				if (!$full_update)
					Db::getInstance()->delete('theme_meta', 'id_theme='.(int)$this->id.' AND id_meta='.(int)$meta['id_meta']);

				$values[] = array(
					'id_theme'     => (int)$this->id,
					'id_meta'      => (int)$meta['id_meta'],
					'left_column'  => (int)$meta['left'],
					'right_column' => (int)$meta['right']
				);
			}
			Db::getInstance()->insert('theme_meta', $values);
		}
	}

	public function hasColumns($page)
	{
		return Db::getInstance()->getRow('
		SELECT IFNULL(left_column, default_left_column) as left_column, IFNULL(right_column, default_right_column) as right_column
		FROM '._DB_PREFIX_.'theme t
		LEFT JOIN '._DB_PREFIX_.'theme_meta tm ON (t.id_theme = tm.id_theme)
		LEFT JOIN '._DB_PREFIX_.'meta m ON (m.id_meta = tm.id_meta)
		WHERE t.id_theme ='.(int)$this->id.' AND m.page = "'.pSQL($page).'"');
	}

	public function hasColumnsSettings($page)
	{
		return (bool)Db::getInstance()->getValue('
		SELECT m.`id_meta`
		FROM '._DB_PREFIX_.'theme t
		LEFT JOIN '._DB_PREFIX_.'theme_meta tm ON (t.id_theme = tm.id_theme)
		LEFT JOIN '._DB_PREFIX_.'meta m ON (m.id_meta = tm.id_meta)
		WHERE t.id_theme ='.(int)$this->id.' AND m.page = "'.pSQL($page).'"');
	}

	public function hasLeftColumn($page = null)
	{
		return (bool)Db::getInstance()->getValue(
			'SELECT IFNULL(
			(
				SELECT left_column
				FROM '._DB_PREFIX_.'theme t
				LEFT JOIN '._DB_PREFIX_.'theme_meta tm ON ( t.id_theme = tm.id_theme )
				LEFT JOIN '._DB_PREFIX_.'meta m ON ( m.id_meta = tm.id_meta )
				WHERE t.id_theme ='.(int)$this->id.'
				AND m.page = "'.pSQL($page).'" ) , default_left_column
			)
			FROM '._DB_PREFIX_.'theme
			WHERE id_theme ='.(int)$this->id
		);
	}

	public function hasRightColumn($page = null)
	{
		return (bool)Db::getInstance()->getValue(
			'SELECT IFNULL(
			(
				SELECT right_column
				FROM '._DB_PREFIX_.'theme t
				LEFT JOIN '._DB_PREFIX_.'theme_meta tm ON ( t.id_theme = tm.id_theme )
				LEFT JOIN '._DB_PREFIX_.'meta m ON ( m.id_meta = tm.id_meta )
				WHERE t.id_theme ='.(int)$this->id.'
				AND m.page = "'.pSQL($page).'" ) , default_right_column
			)
			FROM '._DB_PREFIX_.'theme
			WHERE id_theme ='.(int)$this->id);
	}

	/**
	 * @return array|bool
	 */
	public function getMetas()
	{
		if (!Validate::isUnsignedId($this->id) || $this->id == 0)
			return false;

		return Db::getInstance()->executeS('SELECT * FROM '._DB_PREFIX_.'theme_meta WHERE id_theme = '.(int)$this->id);
	}

	/**
	 * @return bool
	 */
	public function removeMetas()
	{
		if (!Validate::isUnsignedId($this->id) || $this->id == 0)
			return false;

		return Db::getInstance()->delete('theme_meta', 'id_theme = '.(int)$this->id);
	}

	public function toggleResponsive()
	{
		// Object must have a variable called 'responsive'
		if (!array_key_exists('responsive', $this))
			throw new PrestaShopException('property "responsive" is missing in object '.get_class($this));

		// Update only responsive field
		$this->setFieldsToUpdate(array('responsive' => true));

		// Update active responsive on object
		$this->responsive = !(int)$this->responsive;

		// Change responsive to active/inactive
		return $this->update(false);
	}

	public function toggleDefaultLeftColumn()
	{
		if (!array_key_exists('default_left_column', $this))
			throw new PrestaShopException('property "default_left_column" is missing in object '.get_class($this));

		$this->setFieldsToUpdate(array('default_left_column' => true));

		$this->default_left_column = !(int)$this->default_left_column;

		return $this->update(false);
	}

	public function toggleDefaultRightColumn()
	{
		if (!array_key_exists('default_right_column', $this))
			throw new PrestaShopException('property "default_right_column" is missing in object '.get_class($this));

		$this->setFieldsToUpdate(array('default_right_column' => true));

		$this->default_right_column = !(int)$this->default_right_column;

		return $this->update(false);
	}
}
