<?php
/*
* 2007-2014 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  2007-2014 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 SceneCore extends ObjectModel
{
 	/** @var string Name */
	public $name;

	/** @var boolean Active Scene */
	public $active = true;

	/** @var array Zone for image map */
	public $zones = array();

	/** @var array list of category where this scene is available */
	public $categories = array();

	/** @var array Products */
	public $products;

	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'scene',
		'primary' => 'id_scene',
		'multilang' => true,
		'fields' => array(
			'active' => 	array('type' => self::TYPE_BOOL, 'validate' => 'isBool', 'required' => true),

			// Lang fields
			'name' => 		array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'required' => true, 'size' => 100),
		),
	);

 	protected static $feature_active = null;

	public function __construct($id = null, $id_lang = null, $lite_result = true, $hide_scene_position = false)
	{
		parent::__construct($id, $id_lang);

		if (!$lite_result)
			$this->products = $this->getProducts(true, (int)$id_lang, false);
		if ($hide_scene_position)
			$this->name = Scene::hideScenePosition($this->name);
		$this->image_dir = _PS_SCENE_IMG_DIR_;
	}

	public function update($null_values = false)
	{
		if (!$this->updateZoneProducts())
			return false;
		if (!$this->updateCategories())
			return false;

		if (parent::update($null_values))
		{
			// Refresh cache of feature detachable
			Configuration::updateGlobalValue('PS_SCENE_FEATURE_ACTIVE', Scene::isCurrentlyUsed($this->def['table'], true));
			return true;
		}
		return false;

	}

	public function add($autodate = true, $null_values = false)
	{
		if (!empty($this->zones))
			$this->addZoneProducts($this->zones);
		if (!empty($this->categories))
			$this->addCategories($this->categories);

		if (parent::add($autodate, $null_values))
		{
			// Put cache of feature detachable only if this new scene is active else we keep the old value
			if ($this->active)
				Configuration::updateGlobalValue('PS_SCENE_FEATURE_ACTIVE', '1');
			return true;
		}
		return false;
	}

	public function delete()
	{
		$this->deleteZoneProducts();
		$this->deleteCategories();
		if (parent::delete())
		{
			return $this->deleteImage() &&
				Configuration::updateGlobalValue('PS_SCENE_FEATURE_ACTIVE', Scene::isCurrentlyUsed($this->def['table'], true));
		}
		return false;
	}

	public function deleteImage($force_delete = false)
	{	
		if (file_exists($this->image_dir.'thumbs/'.$this->id.'-m_scene_default.'.$this->image_format) 
			&& !unlink($this->image_dir.'thumbs/'.$this->id.'-m_scene_default.'.$this->image_format))
			return false;
		if (!(isset($_FILES) && count($_FILES)))
			return parent::deleteImage();		
		return true;
	}

	public function addCategories($categories)
	{
		$data = array();
		foreach ($categories as $category)
		{
			$data[] = array(
				'id_scene' => (int)$this->id,
				'id_category' => (int)$category,
			);
		}
		return Db::getInstance()->insert('scene_category', $data);
	}

	public function deleteCategories()
	{
		return Db::getInstance()->execute('
		DELETE FROM `'._DB_PREFIX_.'scene_category`
		WHERE `id_scene` = '.(int)$this->id);
	}

	public function updateCategories()
	{
		if (!$this->deleteCategories())
			return false;
		if (!empty($this->categories) && !$this->addCategories($this->categories))
				return false;
		return true;
	}

	public function addZoneProducts($zones)
	{
		$data = array();
		foreach ($zones as $zone)
		{
			$data[] = array(
				'id_scene' => (int)$this->id,
				'id_product' => (int)$zone['id_product'],
				'x_axis' => (int)$zone['x1'],
				'y_axis' => (int)$zone['y1'],
				'zone_width' => (int)$zone['width'],
				'zone_height' => (int)$zone['height'],
			);
		}

		return Db::getInstance()->insert('scene_products', $data);
	}

	public function deleteZoneProducts()
	{
		return Db::getInstance()->execute('
		DELETE FROM `'._DB_PREFIX_.'scene_products`
		WHERE `id_scene` = '.(int)$this->id);
	}

	public function updateZoneProducts()
	{
		if (!$this->deleteZoneProducts())
			return false;
		if ($this->zones && !$this->addZoneProducts($this->zones))
			return false;
		return true;
	}

	/**
	 * Get all scenes of a category
	 *
	 * @return array Products
	 */
	public static function getScenes($id_category, $id_lang = null, $only_active = true, $lite_result = true, $hide_scene_position = true, Context $context = null)
	{
		if (!Scene::isFeatureActive())
			return array();

		$cache_key = 'Scene::getScenes'.$id_category.(int)$lite_result;
		if (!Cache::isStored($cache_key))
		{
			if (!$context)
				$context = Context::getContext();
			$id_lang = is_null($id_lang) ? $context->language->id : $id_lang;
	
			$sql = 'SELECT s.*
					FROM `'._DB_PREFIX_.'scene_category` sc
					LEFT JOIN `'._DB_PREFIX_.'scene` s ON (sc.id_scene = s.id_scene)
					'.Shop::addSqlAssociation('scene', 's').'
					LEFT JOIN `'._DB_PREFIX_.'scene_lang` sl ON (sl.id_scene = s.id_scene)
					WHERE sc.id_category = '.(int)$id_category.'
						AND sl.id_lang = '.(int)$id_lang
						.($only_active ? ' AND s.active = 1' : '').'
					ORDER BY sl.name ASC';
			$scenes = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql);
	
			if (!$lite_result && $scenes)
				foreach ($scenes as &$scene)
					$scene = new Scene($scene['id_scene'], $id_lang, false, $hide_scene_position);
			Cache::store($cache_key, $scenes);
		}
		$scenes = Cache::retrieve($cache_key);
		return $scenes;
	}

	/**
	* Get all products of this scene
	*
	* @return array Products
	*/
	public function getProducts($only_active = true, $id_lang = null, $lite_result = true, Context $context = null)
	{
		if (!Scene::isFeatureActive())
			return array();

		if (!$context)
			$context = Context::getContext();
		$id_lang = is_null($id_lang) ? $context->language->id : $id_lang;

		$products = Db::getInstance()->executeS('
		SELECT s.*
		FROM `'._DB_PREFIX_.'scene_products` s
		LEFT JOIN `'._DB_PREFIX_.'product` p ON (p.id_product = s.id_product)
		'.Shop::addSqlAssociation('product', 'p').'
		WHERE s.id_scene = '.(int)$this->id.($only_active ? ' AND product_shop.active = 1' : ''));

		if (!$lite_result && $products)
			foreach ($products as &$product)
			{
				$product['details'] = new Product($product['id_product'], !$lite_result, $id_lang);
				if (Validate::isLoadedObject($product['details']))
				{
					$product['link'] = $context->link->getProductLink(
						$product['details']->id,
						$product['details']->link_rewrite,
						$product['details']->category,
						$product['details']->ean13
					);
					$cover = Product::getCover($product['details']->id);
					if (is_array($cover))
						$product = array_merge($cover, $product);
				}
			}
		return $products;
	}

	/**
	* Get categories where scene is indexed
	*
	* @param integer $id_scene Scene id
	* @return array Categories where scene is indexed
	*/
	public static function getIndexedCategories($id_scene)
	{
		return Db::getInstance()->executeS('
		SELECT `id_category`
		FROM `'._DB_PREFIX_.'scene_category`
		WHERE `id_scene` = '.(int)$id_scene);
	}

	/**
	  * Hide scene prefix used for position
	  *
	  * @param string $name Scene name
	  * @return string Name without position
	  */
	public static function hideScenePosition($name)
	{
		return preg_replace('/^[0-9]+\./', '', $name);
	}

	/**
	 * This method is allow to know if a feature is used or active
	 * @since 1.5.0.1
	 * @return bool
	 */
	public static function isFeatureActive()
	{
		return Configuration::get('PS_SCENE_FEATURE_ACTIVE');
	}
}