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<?php
/* --------------------------------------------------------------
   CustomerGroupWriter.inc.php 2018-02-09
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2017 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

/**
 * Class CustomerGroupWriter
 *
 * @category   System
 * @package    CustomerGroup
 * @subpackage Repositories
 */
class CustomerGroupWriter implements CustomerGroupWriterInterface
{
    /**
     * @var \CI_DB_query_builder
     */
    protected $queryBuilder;
    
    /**
     * @var \LanguageProvider
     */
    protected $languageProvider;
    
    
    /**
     * CustomerGroupWriter constructor.
     *
     * @param \CI_DB_query_builder $queryBuilder
     * @param \LanguageProvider    $languageProvider
     */
    public function __construct(CI_DB_query_builder $queryBuilder, LanguageProvider $languageProvider)
    {
        $this->queryBuilder     = $queryBuilder;
        $this->languageProvider = $languageProvider;
    }
    
    
    /**
     * Saves customer group entity data in database.
     *
     * @param \CustomerGroupInterface $customerGroup Customer group to be saved.
     *
     * @return $this|\CustomerGroupWriterInterface Same instance for chained method calls.
     */
    public function store(CustomerGroupInterface $customerGroup)
    {
        $lastCustomerGroupId = $this->queryBuilder->select('customers_status_id')
                                                  ->from('customers_status')
                                                  ->order_by('customers_status_id', 'DESC')
                                                  ->get()
                                                  ->row_array()['customers_status_id'];
        
        $customerGroupId = (int)$lastCustomerGroupId + 1;
        
        if(count($customerGroup->getNames()) > 0)
        {
            foreach($customerGroup->getNames() as $languageCode => $name)
            {
                $this->queryBuilder->set([
                                             'customers_status_id'                  => $customerGroupId,
                                             'language_id'                          => $this->languageProvider->getIdByCode(MainFactory::create('LanguageCode',
                                                                                                                                                new StringType($languageCode))),
                                             'customers_status_name'                => $name,
                                             'customers_status_public'              => $customerGroup->getSettings()
                                                                                                     ->isPublic(),
                                             'customers_status_min_order'           => $customerGroup->getConfigurations()
                                                                                                     ->getMinOrder(),
                                             'customers_status_max_order'           => $customerGroup->getConfigurations()
                                                                                                     ->getMaxOrder(),
                                             'customers_status_discount'            => $customerGroup->getConfigurations()
                                                                                                     ->getDiscount(),
                                             'customers_status_ot_discount_flag'    => $customerGroup->getSettings()
                                                                                                     ->isOtDiscountFlag(),
                                             'customers_status_ot_discount'         => $customerGroup->getConfigurations()
                                                                                                     ->getOtDiscount(),
                                             'customers_status_graduated_prices'    => $customerGroup->getSettings()
                                                                                                     ->isGraduatedPrices(),
                                             'customers_status_show_price'          => $customerGroup->getSettings()
                                                                                                     ->isShowPrice(),
                                             'customers_status_show_price_tax'      => $customerGroup->getSettings()
                                                                                                     ->isShowPriceTax(),
                                             'customers_status_add_tax_ot'          => $customerGroup->getSettings()
                                                                                                     ->isAddTaxOt(),
                                             'customers_status_payment_unallowed'   => implode(',',
                                                                                               $customerGroup->getConfigurations()
                                                                                                             ->getUnallowedPaymentModules()),
                                             'customers_status_shipping_unallowed'  => implode(',',
                                                                                               $customerGroup->getConfigurations()
                                                                                                             ->getUnallowedShippingModules()),
                                             'customers_status_discount_attributes' => $customerGroup->getSettings()
                                                                                                     ->isDiscountAttributes(),
                                             'customers_fsk18'                      => $customerGroup->getSettings()
                                                                                                     ->isFsk18(),
                                             'customers_fsk18_display'              => $customerGroup->getSettings()
                                                                                                     ->isFsk18Display(),
                                             'customers_status_write_reviews'       => $customerGroup->getSettings()
                                                                                                     ->isWriteReviews(),
                                             'customers_status_read_reviews'        => $customerGroup->getSettings()
                                                                                                     ->isReadReviews()
                                         ]);
                
                $this->queryBuilder->insert('customers_status');
                $this->_setDefault($customerGroup, $customerGroupId);
            }
        }
        
        $customerGroup->setId(new IntType($customerGroupId));
        $this->_createPersonalOfferTable($customerGroupId)
             ->_createGroupPermissionColumn($customerGroupId, 'categories')
             ->_createGroupPermissionColumn($customerGroupId, 'products');
        
        return $this;
    }
    
    
    /**
     * Updates customer group entity data in database.
     *
     * @param \CustomerGroupInterface $customerGroup Customer group to be  updated.
     *
     * @return $this|\CustomerGroupWriterInterface Same instance for chained method calls.
     */
    public function update(CustomerGroupInterface $customerGroup)
    {
        foreach($customerGroup->getNames() as $languageCode => $name)
        {
            $languageId = $this->languageProvider->getIdByCode(new LanguageCode(new StringType($languageCode)));
            
            $this->queryBuilder->update('customers_status', [
                'customers_status_name'                => $name,
                'customers_status_public'              => $customerGroup->getSettings()->isPublic(),
                'customers_status_min_order'           => $customerGroup->getConfigurations()->getMinOrder(),
                'customers_status_max_order'           => $customerGroup->getConfigurations()->getMaxOrder(),
                'customers_status_discount'            => $customerGroup->getConfigurations()->getDiscount(),
                'customers_status_ot_discount_flag'    => $customerGroup->getSettings()->isOtDiscountFlag(),
                'customers_status_ot_discount'         => $customerGroup->getConfigurations()->getOtDiscount(),
                'customers_status_graduated_prices'    => $customerGroup->getSettings()->isGraduatedPrices(),
                'customers_status_show_price'          => $customerGroup->getSettings()->isShowPrice(),
                'customers_status_show_price_tax'      => $customerGroup->getSettings()->isShowPriceTax(),
                'customers_status_add_tax_ot'          => $customerGroup->getSettings()->isAddTaxOt(),
                'customers_status_payment_unallowed'   => implode(',', $customerGroup->getConfigurations()
                                                                                     ->getUnallowedPaymentModules()),
                'customers_status_shipping_unallowed'  => implode(',', $customerGroup->getConfigurations()
                                                                                     ->getUnallowedShippingModules()),
                'customers_status_discount_attributes' => $customerGroup->getSettings()->isDiscountAttributes(),
                'customers_fsk18'                      => $customerGroup->getSettings()->isFsk18(),
                'customers_fsk18_display'              => $customerGroup->getSettings()->isFsk18Display(),
                'customers_status_write_reviews'       => $customerGroup->getSettings()->isWriteReviews(),
                'customers_status_read_reviews'        => $customerGroup->getSettings()->isReadReviews()
            ], ['customers_status_id' => $customerGroup->getId(), 'language_id' => $languageId]);
        }
        $this->_setDefault($customerGroup, $customerGroup->getId());
        
        return $this;
    }
    
    
    /**
     * Create base data from chosen personal offers table.
     *
     * @param \IntType $customerGroupId
     * @param \IntType $baseId
     *
     * @return \CustomerGroupWriter
     */
    public function createBase(IntType $customerGroupId, IntType $baseId)
    {
        if($customerGroupId->asInt() !== $baseId->asInt())
        {
            $this->queryBuilder->query('INSERT INTO `personal_offers_by_customers_status_' . $customerGroupId->asInt() . '` (`price_id`, `products_id`, `quantity`,`personal_offer`)
                                    SELECT `price_id`, `products_id`, `quantity`,`personal_offer` FROM `personal_offers_by_customers_status_'
                                       . $baseId->asInt() . '`');
        }
        
        return $this;
    }
    
    
    /**
     * Updates the default customer group in the configuration data table.
     *
     * @param \CustomerGroupInterface $customerGroup
     * @param                         $customerGroupId
     *
     * @return \CustomerGroupWriter
     */
    protected function _setDefault(CustomerGroupInterface $customerGroup, $customerGroupId)
    {
        if($customerGroup->isDefault())
        {
            $this->queryBuilder->update('configuration', ['configuration_value' => $customerGroupId],
                                        ['configuration_key' => 'DEFAULT_CUSTOMERS_STATUS_ID']);
        }
        
        return $this;
    }
    
    
    /**
     * Creates an personal offer table with given id as suffix.
     *
     * @param $customerGroupId
     *
     * @return $this
     */
    protected function _createPersonalOfferTable($customerGroupId)
    {
        $this->_dropPersonalOfferTableIfExists($customerGroupId)
             ->_addGroupPermissionToProducts($customerGroupId)
             ->_addGroupPermissionToCategories($customerGroupId)->queryBuilder->query('CREATE TABLE `personal_offers_by_customers_status_'
                                                                                      . $customerGroupId . '` (
                                                                                     `price_id` INT(11) NOT NULL AUTO_INCREMENT,
                                                                                     `products_id` INT(11) NOT NULL DEFAULT \'0\',
                                                                                     `quantity` DECIMAL(15,4) DEFAULT NULL,
                                                                                     `personal_offer` DECIMAL(15,4) DEFAULT NULL,
                                                                                     PRIMARY KEY (`price_id`),
                                                                                     UNIQUE KEY `unique_offer` (`products_id`,`quantity`)
                                                                                     ) ENGINE=InnoDB DEFAULT CHARSET=`utf8`');
        
        return $this;
    }
    
    
    /**
     * Drops personal offer table, if table with id exist.
     *
     * @param $customerGroupId
     *
     * @return $this
     */
    protected function _dropPersonalOfferTableIfExists($customerGroupId)
    {
        $this->queryBuilder->query('DROP TABLE IF EXISTS personal_offers_by_customers_status_' . $customerGroupId);
        
        return $this;
    }
    
    
    /**
     * Add group permission id to products table.
     *
     * @param $customerGroupId
     *
     * @return $this
     */
    protected function _addGroupPermissionToProducts($customerGroupId)
    {
        if($this->_columnNotExists('group_permission_' . $customerGroupId, 'products'))
        {
            $this->queryBuilder->query('ALTER TABLE  `products` ADD  `group_permission_' . $customerGroupId
                                       . '` TINYINT( 1 ) NOT NULL DEFAULT 0');
        }
        
        return $this;
    }
    
    
    /**
     * Add group permission id to categories table.
     *
     * @param $customerGroupId
     *
     * @return $this
     */
    protected function _addGroupPermissionToCategories($customerGroupId)
    {
        if($this->_columnNotExists('group_permission_' . $customerGroupId, 'categories'))
        {
            $this->queryBuilder->query('ALTER TABLE  `categories` ADD  `group_permission_' . $customerGroupId
                                       . '` TINYINT( 1 ) NOT NULL DEFAULT 0');
        }
        
        return $this;
    }
    
    
    /**
     * Check if given column exists in given table.
     *
     * @param $column string
     *
     * @param $table  string
     *
     * @return bool
     */
    protected function _columnNotExists($column, $table)
    {
        $tableColumns = $this->queryBuilder->query('SHOW COLUMNS IN ' . $table . ' LIKE "' . addslashes($column) . '"')
                                           ->result_array();
        
        return count($tableColumns) < 1;
    }
    
    
    /**
     * Creates an group_permission by id column in given table.
     *
     * @param $id    int
     *
     * @param $table string
     *
     * @return $this
     */
    protected function _createGroupPermissionColumn($id, $table)
    {
        if($this->_columnNotExists('group_permission_' . $id, $table))
        {
            $this->queryBuilder->query('ALTER TABLE  `' . $table . '` ADD  `group_permission_' . $id
                                       . '` TINYINT( 1 ) NOT NULL DEFAULT 0');
        }
        
        return $this;
    }
}