<?php

/**
 * Product Link Checker Generate Controller
 */

class ProductLinkCheckerGenerateModuleFrontController extends ModuleFrontController
{
    public function init()
    {
        parent::init();

        // Security check: Validate the token
        $token = Tools::getValue('token');
        $storedToken = Configuration::get('PLC_SECURITY_TOKEN');

        if (!$token || $token !== $storedToken) {
            header('HTTP/1.1 403 Forbidden');
            exit('Invalid security token.');
        }
    }

    public function initContent()
    {
        parent::initContent();

        header('Content-Type: application/json');

        $id_shop_filter = (int)Tools::getValue('plc_id_shop');
        $id_lang_filter = (int)Tools::getValue('plc_id_lang');

        // Determine which shops to scan
        if ($id_shop_filter) {
            $shop_ids = [$id_shop_filter];
        } else {
            $shop_ids = Shop::getShops(true, null, true);
        }

        // Determine which languages to scan
        if ($id_lang_filter) {
            $lang_ids = [$id_lang_filter];
        } else {
            $lang_ids = Language::getLanguages(true, false, true);
        }

        $all_links = [];

        foreach ($shop_ids as $id_shop) {
            foreach ($lang_ids as $id_lang) {
                // Get all active products for the current shop and language
                $products = Product::getProducts($id_lang, 0, 0, 'id_product', 'ASC', false, true);

                foreach ($products as $product_data) {
                    $product = new Product($product_data['id_product'], false, $id_lang, $id_shop);

                    // Skip invalid products
                    if (!Validate::isLoadedObject($product)) {
                        continue;
                    }

                    // Get base product link
                    $base_link = $this->context->link->getProductLink($product, null, null, null, $id_lang, $id_shop);
                    $all_links[] = $base_link;

                    // Get links for combinations if they exist
                    if ($product->hasAttributes()) {
                        $combinations = $product->getAttributesResume($id_lang);
                        if ($combinations) {
                            foreach ($combinations as $combination) {
                                $combo_link = $this->context->link->getProductLink(
                                    $product,
                                    null,
                                    null,
                                    null,
                                    $id_lang,
                                    $id_shop,
                                    $combination['id_product_attribute'],
                                    false,
                                    false,
                                    true // Add attribute anchor
                                );
                                $all_links[] = $combo_link;
                            }
                        }
                    }
                }
            }
        }

        // Remove duplicates that might occur in complex shop setups and output JSON
        echo json_encode(array_values(array_unique($all_links)), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
        exit;
    }
}