<?php
/*
* 2007-2014 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 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/afl-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/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

if (!defined('_PS_VERSION_'))
	exit;

class BlockCategories extends Module
{
	public function __construct()
	{
		$this->name = 'blockcategories';
		$this->tab = 'front_office_features';
		$this->version = '2.5';
		$this->author = 'PrestaShop';

		$this->bootstrap = true;
		parent::__construct();	

		$this->displayName = $this->l('Categories block');
		$this->description = $this->l('Adds a block featuring product categories.');
	}

	public function install()
	{
		// Prepare tab
		$tab = new Tab();
		$tab->active = 1;
		$tab->class_name = "AdminBlockCategories";
		$tab->name = array();
		foreach (Language::getLanguages(true) as $lang)
			$tab->name[$lang['id_lang']] = 'BlockCategories';
		$tab->id_parent = -1;
		$tab->module = $this->name;

		if (!$tab->add() ||
			!parent::install() ||
			!$this->registerHook('footer') ||
			!$this->registerHook('header') ||
			// Temporary hooks. Do NOT hook any module on it. Some CRUD hook will replace them as soon as possible.
			!$this->registerHook('categoryAddition') ||
			!$this->registerHook('categoryUpdate') ||
			!$this->registerHook('categoryDeletion') ||
			!$this->registerHook('actionAdminMetaControllerUpdate_optionsBefore') ||
			!$this->registerHook('actionAdminLanguagesControllerStatusBefore') ||
			!$this->registerHook('displayBackOfficeCategory') ||
			!Configuration::updateValue('BLOCK_CATEG_MAX_DEPTH', 4) ||
			!Configuration::updateValue('BLOCK_CATEG_DHTML', 1) ||
			!Configuration::updateValue('BLOCK_CATEG_ROOT_CATEGORY', 1))
			return false;

		// Hook the module either on the left or right column
		$theme = new Theme(Context::getContext()->shop->id_theme);
		if ((!$theme->default_left_column || !$this->registerHook('leftColumn'))
			&& (!$theme->default_right_column || !$this->registerHook('rightColumn')))
		{
			// If there are no colums implemented by the template, throw an error and uninstall the module
			$this->_errors[] = $this->l('This module need to be hooked in a column and your theme does not implement one');
			parent::uninstall();
			return false;
		}
		return true;
	}

	public function uninstall()
	{
		$id_tab = (int)Tab::getIdFromClassName('AdminBlockCategories');
		
		if ($id_tab)
		{
			$tab = new Tab($id_tab);
			$tab->delete();
		}

		if (!parent::uninstall() ||
			!Configuration::deleteByName('BLOCK_CATEG_MAX_DEPTH') ||
			!Configuration::deleteByName('BLOCK_CATEG_DHTML') ||
			!Configuration::deleteByName('BLOCK_CATEG_ROOT_CATEGORY'))
			return false;
		return true;
	}

	public function getContent()
	{
		$output = '';
		if (Tools::isSubmit('submitBlockCategories'))
		{
			$maxDepth = (int)(Tools::getValue('BLOCK_CATEG_MAX_DEPTH'));
			$dhtml = Tools::getValue('BLOCK_CATEG_DHTML');
			$nbrColumns = Tools::getValue('BLOCK_CATEG_NBR_COLUMN_FOOTER', 4);
			if ($maxDepth < 0)
				$output .= $this->displayError($this->l('Maximum depth: Invalid number.'));
			elseif ($dhtml != 0 && $dhtml != 1)
				$output .= $this->displayError($this->l('Dynamic HTML: Invalid choice.'));
			else
			{
				Configuration::updateValue('BLOCK_CATEG_MAX_DEPTH', (int)$maxDepth);
				Configuration::updateValue('BLOCK_CATEG_DHTML', (int)$dhtml);
				Configuration::updateValue('BLOCK_CATEG_NBR_COLUMN_FOOTER', (int)$nbrColumns);
				Configuration::updateValue('BLOCK_CATEG_SORT_WAY', Tools::getValue('BLOCK_CATEG_SORT_WAY'));
				Configuration::updateValue('BLOCK_CATEG_SORT', Tools::getValue('BLOCK_CATEG_SORT'));
				Configuration::updateValue('BLOCK_CATEG_ROOT_CATEGORY', Tools::getValue('BLOCK_CATEG_ROOT_CATEGORY'));

				$this->_clearBlockcategoriesCache();

				Tools::redirectAdmin(AdminController::$currentIndex.'&configure='.$this->name.'&token='.Tools::getAdminTokenLite('AdminModules').'&conf=6');
			}
		}
		return $output.$this->renderForm();
	}

	public function getTree($resultParents, $resultIds, $maxDepth, $id_category = null, $currentDepth = 0)
	{
		if (is_null($id_category))
			$id_category = $this->context->shop->getCategory();

		$children = array();
		if (isset($resultParents[$id_category]) && count($resultParents[$id_category]) && ($maxDepth == 0 || $currentDepth < $maxDepth))
			foreach ($resultParents[$id_category] as $subcat)
				$children[] = $this->getTree($resultParents, $resultIds, $maxDepth, $subcat['id_category'], $currentDepth + 1);

		if (!isset($resultIds[$id_category]))
			return false;
		
		$return = array(
			'id' => $id_category,
			'link' => $this->context->link->getCategoryLink($id_category, $resultIds[$id_category]['link_rewrite']),
			'name' =>  $resultIds[$id_category]['name'],
			'desc'=>  $resultIds[$id_category]['description'],
			'children' => $children
		);

		return $return;
	}

	public function hookDisplayBackOfficeCategory($params)
	{
		$category = new Category((int)Tools::getValue('id_category'));
		$files   = array();

		if ($category->level_depth != 2)
			return;

		for ($i=0;$i<3;$i++)
		{
			if (file_exists(_PS_CAT_IMG_DIR_.(int)$category->id.'-'.$i.'_thumb.jpg'))
			{
				$files[$i]['type'] = HelperImageUploader::TYPE_IMAGE;
				$files[$i]['image'] = ImageManager::thumbnail(_PS_CAT_IMG_DIR_.(int)$category->id.'-'.$i.'_thumb.jpg', $this->context->controller->table.'_'.(int)$category->id.'-'.$i.'_thumb.jpg', 100, 'jpg', true, true);
				$files[$i]['delete_url'] = Context::getContext()->link->getAdminLink('AdminBlockCategories').'&deleteThumb='.$i.'&id_category='.(int)$category->id;
			}
		}

		$helper = new HelperImageUploader();
		$helper->setMultiple(true)->setUseAjax(true)->setName('thumbnail')->setFiles($files)->setMaxFiles(3)->setUrl(
			Context::getContext()->link->getAdminLink('AdminBlockCategories').'&ajax=1&id_category='.$category->id
			.'&action=uploadThumbnailImages');
		$this->smarty->assign('helper', $helper->render());
		return $this->display(__FILE__, 'views/blockcategories_admin.tpl');
	}

	public function hookLeftColumn($params)
	{
		$this->setLastVisitedCategory();
		$phpself = $this->context->controller->php_self;
		$current_allowed_controllers = array('category');

		$from_category = Configuration::get('PS_HOME_CATEGORY');
		if ($phpself != null && in_array($phpself, $current_allowed_controllers) && Configuration::get('BLOCK_CATEG_ROOT_CATEGORY') && isset($this->context->cookie->last_visited_category) && $this->context->cookie->last_visited_category)
			$from_category = $this->context->cookie->last_visited_category;

		$category = new Category($from_category, $this->context->language->id);

		$cacheId = $this->getCacheId($category ? $category->id : null);

		if (!$this->isCached('blockcategories.tpl', $cacheId))
		{
			$range = '';
			$maxdepth = Configuration::get('BLOCK_CATEG_MAX_DEPTH');
			if ($category)
			{
				if ($maxdepth > 0)
					$maxdepth += $category->level_depth;
				$range = 'AND nleft >= '.$category->nleft.' AND nright <= '.$category->nright;
			}

			$resultIds = array();
			$resultParents = array();
			$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT c.id_parent, c.id_category, cl.name, cl.description, cl.link_rewrite
			FROM `'._DB_PREFIX_.'category` c
			INNER JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category` AND cl.`id_lang` = '.(int)$this->context->language->id.Shop::addSqlRestrictionOnLang('cl').')
			INNER JOIN `'._DB_PREFIX_.'category_shop` cs ON (cs.`id_category` = c.`id_category` AND cs.`id_shop` = '.(int)$this->context->shop->id.')
			WHERE (c.`active` = 1 OR c.`id_category` = '.(int)Configuration::get('PS_HOME_CATEGORY').')
			AND c.`id_category` != '.(int)Configuration::get('PS_ROOT_CATEGORY').'
			'.((int)$maxdepth != 0 ? ' AND `level_depth` <= '.(int)$maxdepth : '').'
			'.$range.'
			AND c.id_category IN (
				SELECT id_category
				FROM `'._DB_PREFIX_.'category_group`
				WHERE `id_group` IN ('.pSQL(implode(', ', Customer::getGroupsStatic((int)$this->context->customer->id))).')
			)
			ORDER BY `level_depth` ASC, '.(Configuration::get('BLOCK_CATEG_SORT') ? 'cl.`name`' : 'cs.`position`').' '.(Configuration::get('BLOCK_CATEG_SORT_WAY') ? 'DESC' : 'ASC'));
			foreach ($result as &$row)
			{
				$resultParents[$row['id_parent']][] = &$row;
				$resultIds[$row['id_category']] = &$row;
			}

			$blockCategTree = $this->getTree($resultParents, $resultIds, $maxdepth, ($category ? $category->id : null));
			$this->smarty->assign('blockCategTree', $blockCategTree);

			if ($category)
				$this->smarty->assign(array('currentCategory' => $category, 'currentCategoryId' => $category->id));

			$this->smarty->assign('isDhtml', Configuration::get('BLOCK_CATEG_DHTML'));
			if (file_exists(_PS_THEME_DIR_.'modules/blockcategories/blockcategories.tpl'))
				$this->smarty->assign('branche_tpl_path', _PS_THEME_DIR_.'modules/blockcategories/category-tree-branch.tpl');
			else
				$this->smarty->assign('branche_tpl_path', _PS_MODULE_DIR_.'blockcategories/category-tree-branch.tpl');
		}
		return $this->display(__FILE__, 'blockcategories.tpl', $cacheId);
	}

	protected function getCacheId($name = null)
	{
		$cache_id = parent::getCacheId();

		if ($name !== null)
			$cache_id .= '|'.$name;

		return $cache_id.'|'.implode('-', Customer::getGroupsStatic($this->context->customer->id));
	}

	public function setLastVisitedCategory()
	{
		$cache_id = 'blockcategories::setLastVisitedCategory';
		if (!Cache::isStored($cache_id))
		{
			if (method_exists($this->context->controller, 'getCategory') && ($category = $this->context->controller->getCategory()))
				$this->context->cookie->last_visited_category = $category->id;
			elseif (method_exists($this->context->controller, 'getProduct') && ($product = $this->context->controller->getProduct()))
				if (!isset($this->context->cookie->last_visited_category)
					|| !Product::idIsOnCategoryId($product->id, array(array('id_category' => $this->context->cookie->last_visited_category)))
					|| !Category::inShopStatic($this->context->cookie->last_visited_category, $this->context->shop))
						$this->context->cookie->last_visited_category = (int)$product->id_category_default;
			Cache::store($cache_id, $this->context->cookie->last_visited_category);
		}
		return Cache::retrieve($cache_id);
	}

	public function hookFooter($params)
	{
		$this->setLastVisitedCategory();
		if (!$this->isCached('blockcategories_footer.tpl', $this->getCacheId()))
		{
			$maxdepth = Configuration::get('BLOCK_CATEG_MAX_DEPTH');
			// Get all groups for this customer and concatenate them as a string: "1,2,3..."
			$groups = implode(', ', Customer::getGroupsStatic((int)$this->context->customer->id));
			if (!$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
				SELECT DISTINCT c.id_parent, c.id_category, cl.name, cl.description, cl.link_rewrite
				FROM `'._DB_PREFIX_.'category` c
				'.Shop::addSqlAssociation('category', 'c').'
				LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category` AND cl.`id_lang` = '.(int)$this->context->language->id.Shop::addSqlRestrictionOnLang('cl').')
				LEFT JOIN `'._DB_PREFIX_.'category_group` cg ON (cg.`id_category` = c.`id_category`)
				WHERE (c.`active` = 1 OR c.`id_category` = 1)
				'.((int)($maxdepth) != 0 ? ' AND `level_depth` <= '.(int)($maxdepth) : '').'
				AND cg.`id_group` IN ('.pSQL($groups).')
				ORDER BY `level_depth` ASC, '.(Configuration::get('BLOCK_CATEG_SORT') ? 'cl.`name`' : 'category_shop.`position`').' '.(Configuration::get('BLOCK_CATEG_SORT_WAY') ? 'DESC' : 'ASC')))
				return;
			$resultParents = array();
			$resultIds = array();

			foreach ($result as &$row)
			{
				$resultParents[$row['id_parent']][] = &$row;
				$resultIds[$row['id_category']] = &$row;
			}
			//$nbrColumns = Configuration::get('BLOCK_CATEG_NBR_COLUMNS_FOOTER');
			$nbrColumns = (int)Configuration::get('BLOCK_CATEG_NBR_COLUMN_FOOTER');
			if (!$nbrColumns or empty($nbrColumns))
				$nbrColumns = 3;
			$numberColumn = abs(count($result) / $nbrColumns);
			$widthColumn = floor(100 / $nbrColumns);
			$this->smarty->assign('numberColumn', $numberColumn);
			$this->smarty->assign('widthColumn', $widthColumn);

			$blockCategTree = $this->getTree($resultParents, $resultIds, Configuration::get('BLOCK_CATEG_MAX_DEPTH'));
			unset($resultParents, $resultIds);

			$isDhtml = (Configuration::get('BLOCK_CATEG_DHTML') == 1 ? true : false);

			$id_category = (int)Tools::getValue('id_category');
			$id_product = (int)Tools::getValue('id_product');

			$this->smarty->assign('blockCategTree', $blockCategTree);

			if (file_exists(_PS_THEME_DIR_.'modules/blockcategories/blockcategories_footer.tpl'))
				$this->smarty->assign('branche_tpl_path', _PS_THEME_DIR_.'modules/blockcategories/category-tree-branch.tpl');
			else
				$this->smarty->assign('branche_tpl_path', _PS_MODULE_DIR_.'blockcategories/category-tree-branch.tpl');
			$this->smarty->assign('isDhtml', $isDhtml);
		}
		$display = $this->display(__FILE__, 'blockcategories_footer.tpl', $this->getCacheId());

		return $display;
	}

	public function hookRightColumn($params)
	{
		return $this->hookLeftColumn($params);
	}

	public function hookHeader()
	{
		$this->context->controller->addJS(_THEME_JS_DIR_.'tools/treeManagement.js');
		$this->context->controller->addCSS(($this->_path).'blockcategories.css', 'all');
	}

	private function _clearBlockcategoriesCache()
	{
		$this->_clearCache('blockcategories.tpl');
		$this->_clearCache('blockcategories_footer.tpl');
	}

	public function hookCategoryAddition($params)
	{
		$this->_clearBlockcategoriesCache();
	}

	public function hookCategoryUpdate($params)
	{
		$this->_clearBlockcategoriesCache();
	}

	public function hookCategoryDeletion($params)
	{
		$this->_clearBlockcategoriesCache();
	}

	public function hookActionAdminMetaControllerUpdate_optionsBefore($params)
	{
		$this->_clearBlockcategoriesCache();
	}
	
	public function renderForm()
	{
		$fields_form = array(
			'form' => array(
				'legend' => array(
					'title' => $this->l('Settings'),
					'icon' => 'icon-cogs'
				),
				'input' => array(
					array(
						'type' => 'radio',
						'label' => $this->l('Category root'),
						'name' => 'BLOCK_CATEG_ROOT_CATEGORY',
						'values' => array(
							array(
								'id' => 'home',
								'value' => 0,
								'label' => $this->l('Home')
							),
							array(
								'id' => 'current',
								'value' => 1,
								'label' => $this->l('Current')
							),
						)
					),
					array(
						'type' => 'text',
						'label' => $this->l('Maximum depth'),
						'name' => 'BLOCK_CATEG_MAX_DEPTH',
						'desc' => $this->l('Set the maximum depth of sublevels displayed in this block (0 = infinite).'),
					),
					array(
						'type' => 'switch',
						'label' => $this->l('Dynamic'),
						'name' => 'BLOCK_CATEG_DHTML',
						'desc' => $this->l('Activate dynamic (animated) mode for sublevels.'),
						'values' => array(
									array(
										'id' => 'active_on',
										'value' => 1,
										'label' => $this->l('Enabled')
									),
									array(
										'id' => 'active_off',
										'value' => 0,
										'label' => $this->l('Disabled')
									)
								),
					),
					array(
						'type' => 'radio',
						'label' => $this->l('Sort'),
						'name' => 'BLOCK_CATEG_SORT',
						'values' => array(
							array(
								'id' => 'name',
								'value' => 1,
								'label' => $this->l('By name')
							),
							array(
								'id' => 'position',
								'value' => 0,
								'label' => $this->l('By position')
							),
						)
					),
					array(
						'type' => 'radio',
						'label' => $this->l('Sort order'),
						'name' => 'BLOCK_CATEG_SORT_WAY',
						'values' => array(
							array(
								'id' => 'name',
								'value' => 1,
								'label' => $this->l('Descending')
							),
							array(
								'id' => 'position',
								'value' => 0,
								'label' => $this->l('Ascending')
							),
						)
					),
					array(
						'type' => 'text',
						'label' => $this->l('How many footer columns would you like?'),
						'name' => 'BLOCK_CATEG_NBR_COLUMN_FOOTER',
					),
				),
				'submit' => array(
					'title' => $this->l('Save'),
				)
			),
		);
		
		$helper = new HelperForm();
		$helper->show_toolbar = false;
		$helper->table =  $this->table;
		$lang = new Language((int)Configuration::get('PS_LANG_DEFAULT'));
		$helper->default_form_language = $lang->id;
		$helper->allow_employee_form_lang = Configuration::get('PS_BO_ALLOW_EMPLOYEE_FORM_LANG') ? Configuration::get('PS_BO_ALLOW_EMPLOYEE_FORM_LANG') : 0;
		$helper->identifier = $this->identifier;
		$helper->submit_action = 'submitBlockCategories';
		$helper->currentIndex = $this->context->link->getAdminLink('AdminModules', false).'&configure='.$this->name.'&tab_module='.$this->tab.'&module_name='.$this->name;
		$helper->token = Tools::getAdminTokenLite('AdminModules');
		$helper->tpl_vars = array(
			'fields_value' => $this->getConfigFieldsValues(),
			'languages' => $this->context->controller->getLanguages(),
			'id_language' => $this->context->language->id
		);

		return $helper->generateForm(array($fields_form));
	}
	
	public function getConfigFieldsValues()
	{
		return array(
			'BLOCK_CATEG_MAX_DEPTH' => Tools::getValue('BLOCK_CATEG_MAX_DEPTH', Configuration::get('BLOCK_CATEG_MAX_DEPTH')),
			'BLOCK_CATEG_DHTML' => Tools::getValue('BLOCK_CATEG_DHTML', Configuration::get('BLOCK_CATEG_DHTML')),
			'BLOCK_CATEG_NBR_COLUMN_FOOTER' => Tools::getValue('BLOCK_CATEG_NBR_COLUMN_FOOTER', Configuration::get('BLOCK_CATEG_NBR_COLUMN_FOOTER')),
			'BLOCK_CATEG_SORT_WAY' => Tools::getValue('BLOCK_CATEG_SORT_WAY', Configuration::get('BLOCK_CATEG_SORT_WAY')),
			'BLOCK_CATEG_SORT' => Tools::getValue('BLOCK_CATEG_SORT', Configuration::get('BLOCK_CATEG_SORT')),
			'BLOCK_CATEG_ROOT_CATEGORY' => Tools::getValue('BLOCK_CATEG_ROOT_CATEGORY', Configuration::get('BLOCK_CATEG_ROOT_CATEGORY'))
		);
	}
}
