<?php

/**
 * Description of A2WL_Aliexpress
 *
 * @author Andrey
 */
if (!class_exists('A2WL_Aliexpress')) {

    class A2WL_Aliexpress {

        private $product_import_model;
        private $account;

        function __construct() {
            $this->product_import_model = new A2WL_ProductImport();
            $this->account = A2WL_Account::getInstance();
        }

        public function load_products($filter, $page = 1, $per_page = 20, $params = array()) {
            /** @var wpdb $wpdb */
            global $wpdb;

            $products_in_import = $this->product_import_model->get_product_id_list();

            $request_url = A2WL_RequestHelper::build_request('get_products', array_merge(array('page' => $page, 'per_page' => $per_page), $filter));
            $request = a2wl_remote_get($request_url);

            if (is_wp_error($request)) {
                $result = A2WL_ResultBuilder::buildError($request->get_error_message());
            } else if (intval($request['response']['code']) != 200) {
                $result = A2WL_ResultBuilder::buildError($request['response']['code'] . " " . $request['response']['message']);
            } else {
                $result = json_decode($request['body'], true);

                if (isset($result['state']) && $result['state'] !== 'error') {
                    $default_type = a2wl_get_setting('default_product_type');
                    $default_status = a2wl_get_setting('default_product_status');

                    $tmp_urls = array();

                    foreach ($result['products'] as &$product) {
                        $product['post_id'] = $wpdb->get_var($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key='_a2wl_external_id' AND meta_value='%s' LIMIT 1", $product['id']));
                        $product['import_id'] = in_array($product['id'], $products_in_import) ? $product['id'] : 0;
                        $product['product_type'] = $default_type;
                        $product['product_status'] = $default_status;
                        $product['is_affiliate'] = true;

                        if (isset($filter['country']) && $filter['country']) {
                            $product['shipping_to_country'] = $filter['country'];
                        }

                        $tmp_urls[] = $product['url'];
                    }
                }
            }
            return $result;
        }

        public function load_product($product_id, $params = array()) {
            /** @var wpdb $wpdb */
            global $wpdb;
            $products_in_import = $this->product_import_model->get_product_id_list();

            $request_url = A2WL_RequestHelper::build_request('get_product', array('product_id' => $product_id));

            $request = a2wl_remote_get($request_url);

            if (is_wp_error($request)) {
                $result = A2WL_ResultBuilder::buildError($request->get_error_message());
            } else {
                $result = json_decode($request['body'], true);

                if ($result['state'] !== 'error') {

                    $result['product']['post_id'] = $wpdb->get_var($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key='_a2wl_external_id' AND meta_value='%s' LIMIT 1", $result['product']['id']));
                    $result['product']['import_id'] = in_array($result['product']['id'], $products_in_import) ? $result['product']['id'] : 0;

                    if (a2wl_get_setting('use_random_stock')) {
                        $result['product']['disable_var_quantity_change'] = true;
                        foreach ($result['product']['sku_products']['variations'] as &$variation) {
                            $variation['original_quantity'] = intval($variation['quantity']);
                            $tmp_quantity = rand(intval(a2wl_get_setting('use_random_stock_min')), intval(a2wl_get_setting('use_random_stock_max')));
                            $tmp_quantity = ($tmp_quantity > $variation['original_quantity']) ? $variation['original_quantity'] : $tmp_quantity;
                            $variation['quantity'] = $tmp_quantity;
                        }
                    }

                    $request_url = 'https://m.aliexpress.com/ajaxapi/productItemDescripitonAjax.do?productId=' . $result['product']['id'] . '&lang=' . A2WL_AliexpressLocalizator::getInstance()->language;
                    $response = a2wl_remote_get($request_url, array('cookies' => A2WL_AliexpressLocalizator::getInstance()->getLocaleCookies()));
                    if (!is_wp_error($response)) {
                        try {
                            $item = json_decode($response['body'], true);
                            if (!empty($item['descResult']['props'])) {
                                $split_attribute_values = a2wl_get_setting('split_attribute_values');
                                $attribute_values_separator = a2wl_get_setting('attribute_values_separator');

                                $result['product']['attribute'] = array();
                                foreach ($item['descResult']['props'] as $prop) {
                                    if ($split_attribute_values) {
                                        $result['product']['attribute'][] = array('name' => $prop['attrName'], 'value' => array_map('a2wl_phrase_apply_filter_to_text', array_map('trim', explode($attribute_values_separator, $prop['attrValue']))));
                                    } else {
                                        $result['product']['attribute'][] = array('name' => $prop['attrName'], 'value' => a2wl_phrase_apply_filter_to_text($prop['attrValue']));
                                    }
                                }
                            }
                        } catch (Exception $e) {
                            error_log($e->getMessage());
                        }
                    } else {
                        error_log("Load product attribute error: " . $response->get_error_message($response->get_error_code()));
                    }

                    $result['product']['description'] = '';
                    if (a2wl_check_defined('A2WL_SAVE_ATTRIBUTE_AS_DESCRIPTION')) {
                        if ($result['product']['attribute'] && count($result['product']['attribute']) > 0) {
                            $result['product']['description'] .= '<table class="shop_attributes"><tbody>';
                            foreach ($result['product']['attribute'] as $attribute) {
                                $result['product']['description'] .= '<tr><th>' . $attribute['name'] . '</th><td><p>' . (is_array($attribute['value']) ? implode(", ", $attribute['value']) : $attribute['value']) . "</p></td></tr>";
                            }
                            $result['product']['description'] .= '</tbody></table>';
                        }
                        // Uncoment if need empty attribute list
                        //$result['product']['attribute'] = array();
                    }

                    if (!a2wl_get_setting('not_import_description')) {
                        // alternativ method
                        //https://m.ru.aliexpress.com/item-desc/32797801052.html

                        $request_url = "https://" . (A2WL_AliexpressLocalizator::getInstance()->language === 'en' ? "www" : A2WL_AliexpressLocalizator::getInstance()->language) . ".aliexpress.com/getDescModuleAjax.htm?productId=" . $result['product']['id'] . "&t=" . (round(microtime(true), 3) * 1000);
                        $response = a2wl_remote_get($request_url, array('cookies' => A2WL_AliexpressLocalizator::getInstance()->getLocaleCookies()));
                        if (!is_wp_error($response)) {
                            $body = $response['body'];
                            $desc_content = str_replace(array("window.productDescription='", "';"), '', $body);
                            $result['product']['description'] .= $this->clean_description($desc_content);
                        } else {
                            error_log("Load product description error: " . $response->get_error_message($response->get_error_code()));
                        }
                    }

                    $result['product']['description'] = A2WL_PhraseFilter::apply_filter_to_text($result['product']['description']);


                    $tmp_all_images = A2WL_Utils::get_all_images_from_product($result['product']);

                    $not_import_gallery_images = false;
                    $not_import_variant_images = false;
                    $not_import_description_images = a2wl_get_setting('not_import_description_images');

                    $result['product']['skip_images'] = array();
                    foreach ($tmp_all_images as $img_id => $img) {
                        if (!in_array($img_id, $result['product']['skip_images']) && (($not_import_gallery_images && $img['type'] === 'gallery') || ($not_import_variant_images && $img['type'] === 'variant') || ($not_import_description_images && $img['type'] === 'description'))) {
                            $result['product']['skip_images'][] = $img_id;
                        }
                    }
                }
            }

            return $result;
        }

        public function sync_products($product_ids, $params = array()) {
            $request_params = array('product_id' => implode(',', is_array($product_ids) ? $product_ids : array($product_ids)));
            if (!empty($params['manual_update'])) {
                $request_params['manual_update'] = 1;
            }
            if (!empty($params['pc'])) {
                $request_params['pc'] = $params['pc'];
            }
            $request_url = A2WL_RequestHelper::build_request('sync_products', $request_params);
            $request = a2wl_remote_get($request_url);
            if (is_wp_error($request)) {
                $result = A2WL_ResultBuilder::buildError($request->get_error_message());
            } else {
                $result = json_decode($request['body'], true);

                $use_random_stock = a2wl_get_setting('use_random_stock');
                if ($use_random_stock) {
                    $random_stock_min = intval(a2wl_get_setting('use_random_stock_min'));
                    $random_stock_max = intval(a2wl_get_setting('use_random_stock_max'));

                    foreach ($result['products'] as &$product) {
                        foreach ($product['sku_products']['variations'] as &$variation) {
                            $variation['original_quantity'] = intval($variation['quantity']);
                            $tmp_quantity = rand($random_stock_min, $random_stock_max);
                            $tmp_quantity = ($tmp_quantity > $variation['original_quantity']) ? $variation['original_quantity'] : $tmp_quantity;
                            $variation['quantity'] = $tmp_quantity;
                        }
                    }
                }

                if (isset($params['manual_update']) && $params['manual_update'] && a2wl_check_defined('A2WL_FIX_RELOAD_DESCRIPTION') && !a2wl_get_setting('not_import_description')) {

                    foreach ($result["products"] as &$product) {
                        $request_url = "https://" . (A2WL_AliexpressLocalizator::getInstance()->language === 'en' ? "www" : A2WL_AliexpressLocalizator::getInstance()->language) . ".aliexpress.com/getDescModuleAjax.htm?productId=" . $product['id'] . "&t=" . (round(microtime(true), 3) * 1000);
                        $response = a2wl_remote_get($request_url, array('cookies' => A2WL_AliexpressLocalizator::getInstance()->getLocaleCookies()));
                        if (!is_wp_error($response)) {
                            $body = $response['body'];
                            $desc_content = str_replace(array("window.productDescription='", "';"), '', $body);
                            $product['description'] .= $this->clean_description($desc_content);
                        } else {
                            error_log("Load product description error: " . $response->get_error_message($response->get_error_code()));
                        }

                        $product['description'] = A2WL_PhraseFilter::apply_filter_to_text($product['description']);
                    }
                }
            }

            return $result;
        }

        public static function clean_description($description) {
            $html = $description;

            if (function_exists('mb_convert_encoding')) {
                $html = trim(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
            } else {
                $html = htmlspecialchars_decode(utf8_decode(htmlentities($html, ENT_COMPAT, 'UTF-8', false)));
            }

            if (function_exists('libxml_use_internal_errors')) {
                libxml_use_internal_errors(true);
            }
            $dom = new DOMDocument();
            @$dom->loadHTML($html);
            $dom->formatOutput = true;

            $tags = apply_filters('a2wl_clean_description_tags', array('script', 'head', 'meta', 'style', 'map', 'noscript', 'object', 'iframe'));

            foreach ($tags as $tag) {
                $elements = $dom->getElementsByTagName($tag);
                for ($i = $elements->length; --$i >= 0;) {
                    $e = $elements->item($i);
                    if ($tag == 'a') {
                        while ($e->hasChildNodes()) {
                            $child = $e->removeChild($e->firstChild);
                            $e->parentNode->insertBefore($child, $e);
                        }
                        $e->parentNode->removeChild($e);
                    } else {
                        $e->parentNode->removeChild($e);
                    }
                }
            }

            if (!in_array('img', $tags)) {
                $elements = $dom->getElementsByTagName('img');
                for ($i = $elements->length; --$i >= 0;) {
                    $e = $elements->item($i);
                    $e->setAttribute('src', add_query_arg('descimg', '1', A2WL_Utils::clear_image_url($e->getAttribute('src'))));
                }
            }



            $html = preg_replace('~<(?:!DOCTYPE|/?(?:html|body))[^>]*>\s*~i', '', $dom->saveHTML());

            $html = preg_replace('/(<[^>]+) style=".*?"/i', '$1', $html);
            $html = preg_replace('/(<[^>]+) class=".*?"/i', '$1', $html);
            $html = preg_replace('/(<[^>]+) width=".*?"/i', '$1', $html);
            $html = preg_replace('/(<[^>]+) height=".*?"/i', '$1', $html);
            $html = preg_replace('/(<[^>]+) alt=".*?"/i', '$1', $html);
            $html = preg_replace('/^<!DOCTYPE.+?>/', '$1', str_replace(array('<html>', '</html>', '<body>', '</body>'), '', $html));
            $html = preg_replace("/<\/?div[^>]*\>/i", "", $html);

            $html = preg_replace('/<a[^>]*>(.*)<\/a>/iU', '', $html);
            $html = preg_replace('/<a[^>]*><\/a>/iU', '', $html); //delete empty A tags
            $html = preg_replace("/<\/?h1[^>]*\>/i", "", $html);
            $html = preg_replace("/<\/?strong[^>]*\>/i", "", $html);
            $html = preg_replace("/<\/?span[^>]*\>/i", "", $html);

            //$html = str_replace(' &nbsp; ', '', $html);
            $html = str_replace('&nbsp;', ' ', $html);
            $html = str_replace('\t', ' ', $html);
            $html = str_replace('  ', ' ', $html);


            $html = preg_replace("/http:\/\/g(\d+)\.a\./i", "https://ae$1.", $html);

            $html = preg_replace("/<[^\/>]*[^td]>([\s]?|&nbsp;)*<\/[^>]*[^td]>/", '', $html); //delete ALL empty tags
            $html = preg_replace('/<td[^>]*><\/td>/iU', '', $html); //delete empty TD tags

            $html = str_replace(array('<img', '<table'), array('<img class="img-responsive"', '<table class="table table-bordered'), $html);
            $html = force_balance_tags($html);
            
            return html_entity_decode($html, ENT_COMPAT, 'UTF-8');
        }
    }

}