<?php
/**
* 2022 ECSoft
*
* 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 dev.ecsoft@gmail.com so we can send you a copy immediately.
*
*  @author ECSoft <dev.ecsoft@gmail.com>
*  @copyright  2022 ECSoft
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of ECSoft
*/

/**
 * @property EcsGtmPro $module
 */
class EcsGtmProProduct
{
    private static $instance = null;
    protected $module;

    private function __construct()
    {
        $this->module = Module::getInstanceByName('ecsgtmpro');
    }

    public static function getInstance()
    {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }


    public function getProductId($product, $combination)
    {
        return $this->getProductIdentifier($product, $combination, $this->module->gtmConfig->dataConfig->product_id);
    }

    public function remarketingGetProductIdentifier($product)
    {
        $id_product_attribute = EcsGtmProTools::getProductAttributeId($product, $this->module->gtmConfig->dataConfig->display_variant_id);
        $combination = null;
        if ($id_product_attribute) {
            $combination = new Combination($id_product_attribute);
        }

        return $this->getProductIdentifier($product, $combination, $this->module->gtmConfig->remarketingConfig->product_id, $this->module->gtmConfig->remarketingConfig->product_prefix);
    }

    public function getProductIdentifier($product, $combination = null, $id_type = null, $product_id_prefix = null)
    {
        $product = is_object($product) ? $product : (object)$product;
        $product_identifier = null;

        if (empty($id_type) || !in_array($id_type, array('id', 'reference', 'ean13', 'upc'))) {
            $id_type = 'id';
        }

        if (!is_null($combination) && Validate::isLoadedObject($combination)) {
            $id_product_attribute = $combination->id;
        } else {
            $combination = null;
            $id_product_attribute = null;
        }

        if (empty($product->id) && !empty($product->id_product)) {
            $product->id = $product->id_product;
        }

        switch ($id_type) {
            case 'id':
                $product_id = !empty($product->id) ? $product->id : 0;
                $product_identifier = null;

                if ($this->module->gtmConfig->dataConfig->display_variant_id != 'never') {
                    if (!$id_product_attribute && !empty($product->id_product_attribute)) {
                        $id_product_attribute = $product->id_product_attribute;
                    }

                    if ($id_product_attribute) {
                        $product_identifier = $product_id.'-'.$id_product_attribute;
                    } elseif ($this->module->gtmConfig->dataConfig->display_variant_id == 'always') {
                        $product_identifier = $product_id.'-'.Product::getDefaultAttribute($product_id);
                    }
                }

                $product_identifier = $product_identifier ? $product_identifier : ''.$product_id;
                break;

            case 'reference':
            case 'ean13':
            case 'upc':
                if ($combination && !empty($combination->$id_type)) {
                    $product_identifier = $combination->$id_type;
                } elseif (!empty($product->$id_type)) {
                    $product_identifier = $product->$id_type;
                }

                break;

            default:
                $product_identifier = 'ERROR';
                break;
        }

        if (!empty($product_id_prefix)) {
            $product_id_prefix = (string) $product_id_prefix;
            $product_id_prefix = str_replace('{lang}', Context::getContext()->language->iso_code, $product_id_prefix);
            $product_id_prefix = str_replace('{LANG}', Tools::strtoupper(Context::getContext()->language->iso_code), $product_id_prefix);

            $product_identifier = $product_id_prefix.$product_identifier;
        }


        return $product_identifier;
    }


    public function getProductName($product, $product_name_field = null)
    {
        $base_product = new Product($product->id);
        $product_name_field = empty($product_name_field) ? $this->module->gtmConfig->dataConfig->product_name : $product_name_field;
        $id_lang = $this->module->dlManager->getDataLanguage();

        switch ($product_name_field) {
            case 'link_rewrite':
                if (!empty($base_product->link_rewrite)) {
                    if (is_array($base_product->link_rewrite)) {
                        $product_name = !empty($base_product->link_rewrite[$id_lang]) ? $base_product->link_rewrite[$id_lang] : $base_product->link_rewrite[0];
                    } else {
                        $product_name = $base_product->link_rewrite;
                    }
                }
                break;

            case 'id':
                $product_name = $base_product->id;
                break;

            default:
                $product_name = EcsGtmProTools::cleanString(Product::getProductName($base_product->id, 0, $id_lang));
                break;
        }

        $product_name = trim($product_name);

        if (empty($product_name)) {
            $product_name = 'Unknown product name';
        }
        return $product_name;
    }
}