<?php

/**
 * Product Link Checker Product Data Generate Controller
 *
 * This controller generates a JSON feed of all products and their attribute combinations
 * with detailed information for external services.
 */

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

        // Security check: Validate the token, same as the other controller
        $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_product_data = [];

        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 or unloaded products
                    if (!Validate::isLoadedObject($product)) {
                        continue;
                    }


                    // 2. Add data for all attribute combinations
                    if ($product->hasAttributes()) {
                        // getAttributeCombinations provides detailed data for each combination
                        $combinations = $product->getAttributeCombinations($id_lang);
                        if ($combinations) {
                            foreach ($combinations as $combination) {
                                if (!isset($all_product_data[$product->id . '_' . $combination['id_product_attribute']])) {
                                    $all_product_data[$product->id . '_' . $combination['id_product_attribute']] = [
                                        'id_product' => (int)$product->id,
                                        'id_product_attribute' => (int)$combination['id_product_attribute'],
                                        'meta_title' => $product->meta_title, // Meta is usually product-level
                                        'meta_description' => $product->meta_description,
                                        // Title and descriptions are also from the main product
                                        'title' => $product->name,
                                        'description' => Tools::getValue('plc_no_description') ? null : $product->description,
                                        'description_short' => Tools::getValue('plc_no_description_short') ? null : $product->description_short,
                                        // These fields are specific to the combination
                                        'mpn' => $combination['mpn'] ?? null,
                                        'reference' => $combination['reference'] ?? null,
                                        'ean13' => $combination['ean13'] ?? null,
                                        'upc' => $combination['upc'] ?? null,
                                        'id_language' => (int)$id_lang,
                                        'id_shop' => (int)$id_shop,
                                        'link' => $this->context->link->getProductLink($product, null, null, null, (int)$id_lang, (int)$id_shop, (int)$combination['id_product_attribute']),
                                        'link_rewrite' => $product->link_rewrite,
                                    ];
                                }
                                $all_product_data[$product->id . '_' . $combination['id_product_attribute']]['attributes'][] = [
                                    'group_name' => $combination['group_name'] ?? null,
                                    'attribute_name' => $combination['attribute_name'] ?? null,
                                ];
                            }
                        }
                    } else {          // 1. Add the main product data (as a product without a specific combination)
                        $all_product_data[] = [
                            'id_product' => (int)$product->id,
                            'id_product_attribute' => 0, // 0 for the main product
                            'meta_title' => $product->meta_title,
                            // Grouping meta fields for clarity
                            'meta_description' => $product->meta_description,
                            'title' => $product->name,
                            'description' => Tools::getValue('plc_no_description') ? null : $product->description,
                            'description_short' => Tools::getValue('plc_no_description_short') ? null : $product->description_short,
                            'mpn' => $product->mpn ?? null,
                            'reference' => $product->reference ?? null,
                            'ean13' => $product->ean13 ?? null,
                            'upc' => $product->upc ?? null,
                            'id_language' => (int)$id_lang,
                            'id_shop' => (int)$id_shop,
                            'link' => $this->context->link->getProductLink($product),
                            'link_rewrite' => $product->link_rewrite,
                        ];
                    }
                }
            }
        }

        // Output the final array as a JSON object
        echo json_encode($all_product_data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
        exit;
    }
}