<?php
class ConfiguratorStorage extends ObjectModel
{
    /**
     * Product with configuration
     * @param int $id_product
     * @return boolean
     */
    public static function hasConfiguratorOpt($id_product)
    {
        $result = Db::getInstance()->getValue('
    		SELECT count(*) AS nb
            FROM `'._DB_PREFIX_.'product_configurator_opt_group` pcog,
                `'._DB_PREFIX_.'configurator_opt_group` cog
    		WHERE pcog.`id_product` = '.(int)$id_product.'
                AND cog.`id_configurator_opt_group` = pcog.`id_configurator_opt_group`');
        
        return ( $result > 0 ? true : false );
    }
    
    /**
     * Retourne les groupes options
     * @param int $id_product
     * @return array
     */
    public static function getConfiguratorOptGroup($id_product)
    {
        $context = Context::getContext();
        $id_lang = $context->language->id;
        $result = Db::getInstance()->executeS('
    		SELECT pcog.*, col.`name`, col.`description`, col.`separator`, cog.`type`, cog.`reference`
            FROM `'._DB_PREFIX_.'product_configurator_opt_group` pcog,
                `'._DB_PREFIX_.'configurator_opt_group` cog,
                `'._DB_PREFIX_.'configurator_opt_group_lang` col
    		WHERE pcog.`id_product` = '.(int)$id_product.'
                AND cog.`id_configurator_opt_group` = col.`id_configurator_opt_group`
                AND pcog.`id_configurator_opt_group` = col.`id_configurator_opt_group`
                AND col.`id_lang` = '.(int)$id_lang.'
    		ORDER BY pcog.`position` ASC');
        
        return $result;
    }
    
    /**
     * Retourne les impacts
     * @param int $id_product
     * @return array
     */
    public static function getConfiguratorOptImpact($id_product)
    {
        $context = Context::getContext();
        $id_lang = $context->language->id;
        $result = Db::getInstance()->executeS('
            SELECT pcoi.`id_product_configurator_opt_impact`, pcoi.`id_product_configurator_opt_group`, pcoi.`id_configurator_opt`, col.`name`, pcoi.`price`, co.`position`
            FROM `'._DB_PREFIX_.'product_configurator_opt_impact` pcoi
            LEFT JOIN `'._DB_PREFIX_.'configurator_opt` co ON co.`id_configurator_opt` = pcoi.`id_configurator_opt`
            LEFT JOIN `'._DB_PREFIX_.'configurator_opt_lang` col
                ON (col.`id_configurator_opt` = pcoi.`id_configurator_opt` AND col.`id_lang` = '.(int)$id_lang.')
            WHERE pcoi.`id_product` = '.(int)$id_product.'
            ORDER BY pcoi.`id_product_configurator_opt_group`, co.`position` ASC');
        
        return $result;
    }
    
    /**
     * Group Label : values
     * @param int $id_configurator
     * @return array
     */
    public static function getOptProductFlatten($id_configurator)
    {
        $context = Context::getContext();
        $id_lang = $context->language->id;
        
        $optFlatten = array();
        
        $sql = 'SELECT cs.`opt_value`, cs.`id_configurator_opt_group`, cogl.`name` AS groupName, col.`name` AS optName, cog.`reference`, cog.`type`
            FROM `'._DB_PREFIX_.'configurator_storage` cs,
                `'._DB_PREFIX_.'configurator_opt_lang` col,
                `'._DB_PREFIX_.'configurator_opt_group_lang` cogl,
                `'._DB_PREFIX_.'configurator_opt_group` cog
            WHERE col.`id_configurator_opt` = cs.`id_configurator_opt` AND col.`id_lang` = '.(int)$id_lang.'
                AND cogl.`id_configurator_opt_group` = cs.`id_configurator_opt_group` AND cogl.`id_lang` = '.(int)$id_lang.'
                AND cog.`id_configurator_opt_group` = cs.`id_configurator_opt_group`
                AND cs.`id_configurator` = '.(int)$id_configurator;
        $optList = Db::getInstance()->executeS($sql);
        if (count($optList) > 0) {
            foreach ($optList as $o) {
                if (!array_key_exists($o['id_configurator_opt_group'], $optFlatten)) {
                    $optFlatten[$o['id_configurator_opt_group']] = array(
                        'name' => $o['groupName'],
                        'reference' => $o['reference'],
                        'type' => $o['type'],
                        'value' => array(),
                    );
                }
                if ($o['opt_value'] == '') {
                    $optFlatten[$o['id_configurator_opt_group']]['value'][] = $o['optName'];
                } else {
                    $optFlatten[$o['id_configurator_opt_group']]['value'][] = $o['opt_value'];
                }
            }
        }
        
        return $optFlatten;
    }
    
    /**
     * Get form values
     * @param int $id_configurator
     * @return array
     */
    public static function getOptProductSelected($id_configurator)
    {
        $context = Context::getContext();
        $id_lang = $context->language->id;
        
        $optFlatten = array();
        
        $sql = 'SELECT cs.`opt_value`, cs.`id_configurator_opt`, cs.`id_configurator_opt_group`, cogl.`name` AS groupName, col.`name` AS optName, cog.`reference`
            FROM `'._DB_PREFIX_.'configurator_storage` cs,
                `'._DB_PREFIX_.'configurator_opt_lang` col,
                `'._DB_PREFIX_.'configurator_opt_group_lang` cogl,
                `'._DB_PREFIX_.'configurator_opt_group` cog
            WHERE col.`id_configurator_opt` = cs.`id_configurator_opt` AND col.`id_lang` = '.(int)$id_lang.'
                AND cogl.`id_configurator_opt_group` = cs.`id_configurator_opt_group` AND cogl.`id_lang` = '.(int)$id_lang.'
                AND cog.`id_configurator_opt_group` = cs.`id_configurator_opt_group`
                AND cs.`id_configurator` = '.(int)$id_configurator;
        $optList = Db::getInstance()->executeS($sql);
        if (count($optList) > 0) {
            foreach ($optList as $o) {
                if (!array_key_exists($o['id_configurator_opt_group'], $optFlatten)) {
                    $optFlatten[$o['id_configurator_opt_group']] = array();
                }
                if ($o['opt_value'] == '') {
                    $optFlatten[$o['id_configurator_opt_group']][] = $o['id_configurator_opt'];
                } else {
                    $optFlatten[$o['id_configurator_opt_group']][] = $o['opt_value'];
                }
            }
        }
        
        return $optFlatten;
    }

    /**
     * Parse option send when adding to cart
     * @param int $id_configurator
     * @param int $id_product
     * @param int $id_address_delivery
     * @param int $id_product_attribute
     * @param int $qty
     * @return int
     */
    public static function parseConfigurator($id_configurator, $id_product, $id_address_delivery, $id_product_attribute, $qty)
    {
        $detectOptGroup = 'optgroup-';
        $postValues = Tools::getAllValues();
        
        if (count($postValues) > 0) {
            $sqlValues = array();
            foreach($postValues as $p => $v) {
                if (!empty($v)) {
                    if (substr($p, 0, strlen($detectOptGroup)) === $detectOptGroup) {
                        $ids = explode('-', substr($p, strlen($detectOptGroup)));
                        $id_configurator_opt_group = $ids[0];
                        $id_configurator_opt = $v;
                        
                        $optValue = '';
                        if (isset($ids[1])) {
                            $id_configurator_opt = $ids[1];
                            $optValue = $v;
                        }
                        
                        if (is_array($id_configurator_opt) && count($id_configurator_opt) > 0) {
                            foreach ($id_configurator_opt as $item) {
                                $price = Db::getInstance()->getValue('SELECT pcoi.`price` FROM `'._DB_PREFIX_.'configurator_opt` co,
                                 `'._DB_PREFIX_.'product_configurator_opt_impact` pcoi
                                WHERE co.`id_configurator_opt` = pcoi.`id_configurator_opt` AND co.`id_configurator_opt` = '.(int)$item);
                                $sqlValues[] = '(@id_configurator, '.$id_product.', '.(int)$id_configurator_opt_group.', '.pSQL($item).', \''.pSQL($optValue).'\', '.$price.')';
                            }
                        } else {
                            if (is_array($optValue)) {
                                foreach($optValue as $v) {
                                    $price = Db::getInstance()->getValue('SELECT pcoi.`price` FROM `'._DB_PREFIX_.'configurator_opt` co,
                                         `'._DB_PREFIX_.'product_configurator_opt_impact` pcoi
                                        WHERE co.`id_configurator_opt` = pcoi.`id_configurator_opt` AND co.`id_configurator_opt` = '.(int)$id_configurator_opt);
                                    $sqlValues[] = '(@id_configurator, '.$id_product.', '.(int)$id_configurator_opt_group.', '.(int)$id_configurator_opt.', \''.pSQL($v).'\', '.$price.')';
                                }
                            } else {
                                $price = Db::getInstance()->getValue('SELECT pcoi.`price` FROM `'._DB_PREFIX_.'configurator_opt` co,
                                         `'._DB_PREFIX_.'product_configurator_opt_impact` pcoi
                                        WHERE co.`id_configurator_opt` = pcoi.`id_configurator_opt` AND co.`id_configurator_opt` = '.(int)$id_configurator_opt);
                                $sqlValues[] = '(@id_configurator, '.$id_product.', '.(int)$id_configurator_opt_group.', '.(int)$id_configurator_opt.', \''.pSQL($optValue).'\', '.$price.')';
                            }
                        }
                    }
                }
            }
            
            if (count($sqlValues) > 0) {
                if ($id_configurator === null) {
                    $id_configurator = 0;
                }
                
                if ($id_configurator == 0) {
                    // Get id_configurator max
                    $cmaxSql = 'SELECT IF(MAX(cp.id_configurator) IS NULL, 0, MAX(cp.id_configurator)) AS maxCp,
                            IF(MAX(cs.id_configurator) IS NULL, 0, MAX(cs.id_configurator)) AS maxCs
                        FROM `'._DB_PREFIX_.'configurator_storage` cs, `'._DB_PREFIX_.'cart_product` cp';
                    $max = Db::getInstance()->getRow($cmaxSql);
                    $id_configurator = ($max['maxCp'] > $max['maxCs'] ? $max['maxCp'] : $max['maxCs']) + 1;
                    
                    $context = Context::getContext();
                    
                    // Assign id on cart_product
                    Db::getInstance()->update('cart_product', array(
                        'id_configurator' => (int)$id_configurator),
                        'id_cart='.(int)$context->cart->id.
                        ' AND id_product='.(int)$id_product.
                        ' AND id_address_delivery='.(int)$id_address_delivery.
                        ' AND id_shop='.(int)$context->cart->id_shop.
                        ' AND id_product_attribute='.(int)$id_product_attribute.
                        ' AND quantity='.(int)$qty
                        .' AND id_configurator = 0');
                }
                // Delete
                else {
                    Db::getInstance()->delete('configurator_storage', 'id_configurator = '.(int)$id_configurator);
                }
                
                // Insert configuration
                $insertSql = 'SET @id_configurator = '.$id_configurator.';
                    INSERT INTO `'._DB_PREFIX_.'configurator_storage`
                    (`id_configurator`, `id_product`, `id_configurator_opt_group`, `id_configurator_opt`, `opt_value`, `price`)
                    VALUES '.implode(',', $sqlValues);
                if (!Db::getInstance()->execute($insertSql)){
                    $id_configurator = 0;
                }
                
                return $id_configurator;
            }
        }
        
        return 0;
    }
    
    /**
     * Check if fields are required
     * @param int $id_product
     * @return boolean|array
     */
    public static function checkRequirement($id_product)
    {
        $context = Context::getContext();
        $id_lang = $context->language->id;
        $errors = array();
        $optIds = array();
        $detectOptGroup = 'optgroup-';
        $postValues = Tools::getAllValues();
        if (count($postValues) > 0) {
            foreach($postValues as $p => $v) {
                if (substr($p, 0, strlen($detectOptGroup)) === $detectOptGroup) {
                    $ids = explode('-', substr($p, strlen($detectOptGroup)));
                    $optIds[$ids[0]] = $v;
                }
            }
            
            $result = Db::getInstance()->executeS('
        		SELECT pcog.*, cog.`type`, col.`name`
                FROM `'._DB_PREFIX_.'product_configurator_opt_group` pcog,
                    `'._DB_PREFIX_.'configurator_opt_group` cog,
                    `'._DB_PREFIX_.'configurator_opt_group_lang` col
        		WHERE pcog.`id_product` = '.(int)$id_product.'
                    AND cog.`id_configurator_opt_group` = col.`id_configurator_opt_group`
                    AND pcog.`id_configurator_opt_group` = col.`id_configurator_opt_group`
                    AND col.`id_lang` = '.(int)$id_lang.'
        		ORDER BY pcog.`position` ASC');
            if (count($result) > 0) {
                foreach($result as $item) {
                    if ($item['required'] == 1) {
                        if (!array_key_exists($item['id_configurator_opt_group'], $optIds)) {
                            $errors[] = Tools::displayError('Error : field '.$item['name'].' has no value');
                        }
                        else {
                            $value = $optIds[$item['id_configurator_opt_group']];
                            if (empty($value)) {
                                $errors[] = Tools::displayError('Error : field '.$item['name'].' has no value');
                            }
                        }
                    }
                    
                    // Check quantities field value
                    if ($item['type'] == 'quantities') {
                        $product = new Product($id_product);
                        $id_product_attribute = $product->getDefaultIdProductAttribute();
                        if ($id_product_attribute > 0) {
                            $attributes = $product->getAttributeCombinations($context->language->id);
                            foreach ($attributes as $a) {
                                if ($a['id_product_attribute'] == $id_product_attribute) {
                                    $qty = $a['minimal_quantity'];
                                    break;
                                }
                            }
                        }
                        $values = $optIds[$item['id_configurator_opt_group']];
                        foreach($values as $v) {
                            if ($v <= $qty) {
                                $errors[] = Tools::displayError('You have set a quantity under minimal quantity');
                                break;
                            }
                        }
                    }
                }
            }
        }
        
        if (count($errors) > 0) {
            return $errors;
        }
        
        return true;
    }
}