<?php
/**
 * WooCommerce Integration
 *
 * Fetches WooCommerce products, categories, and attributes
 * Follows WORDPRESS-PLUGIN-INTEGRATION.md guidelines
 *
 * @package Igny8Bridge
 */

// Prevent direct access
if (!defined('ABSPATH')) {
    exit;
}

/**
 * Check if WooCommerce is active
 *
 * @return bool True if WooCommerce is active
 */
function igny8_is_woocommerce_active() {
    return class_exists('WooCommerce');
}

/**
 * Fetch all WooCommerce products
 *
 * @param int $per_page Products per page
 * @return array|false Formatted products array or false on failure
 */
function igny8_fetch_woocommerce_products($per_page = 100) {
    // Check if WooCommerce is active
    if (!igny8_is_woocommerce_active()) {
        return false;
    }
    
    // Get WooCommerce API credentials
    $consumer_key = get_option('woocommerce_api_consumer_key', '');
    $consumer_secret = get_option('woocommerce_api_consumer_secret', '');
    
    if (empty($consumer_key) || empty($consumer_secret)) {
        // Try to use basic auth if API keys not set
        $auth = '';
    } else {
        $auth = 'Basic ' . base64_encode($consumer_key . ':' . $consumer_secret);
    }
    
    $headers = array();
    if ($auth) {
        $headers['Authorization'] = $auth;
    }
    
    $wp_response = wp_remote_get(sprintf(
        '%s/wp-json/wc/v3/products?per_page=%d&status=publish',
        get_site_url(),
        $per_page
    ), array(
        'headers' => $headers
    ));
    
    if (is_wp_error($wp_response)) {
        return false;
    }
    
    $products = json_decode(wp_remote_retrieve_body($wp_response), true);
    
    if (!is_array($products)) {
        return false;
    }
    
    $formatted_products = array();
    foreach ($products as $product) {
        $formatted_products[] = array(
            'id' => $product['id'],
            'name' => $product['name'],
            'slug' => $product['slug'],
            'sku' => $product['sku'],
            'type' => $product['type'],
            'status' => $product['status'],
            'description' => $product['description'],
            'short_description' => $product['short_description'],
            'price' => $product['price'],
            'regular_price' => $product['regular_price'],
            'sale_price' => $product['sale_price'],
            'on_sale' => $product['on_sale'],
            'stock_status' => $product['stock_status'],
            'stock_quantity' => $product['stock_quantity'],
            'categories' => $product['categories'] ?? array(),
            'tags' => $product['tags'] ?? array(),
            'images' => $product['images'] ?? array(),
            'attributes' => $product['attributes'] ?? array(),
            'variations' => $product['variations'] ?? array(),
            'url' => $product['permalink']
        );
    }
    
    return $formatted_products;
}

/**
 * Fetch WooCommerce product categories
 *
 * @param int $per_page Categories per page
 * @return array|false Formatted categories array or false on failure
 */
function igny8_fetch_product_categories($per_page = 100) {
    if (!igny8_is_woocommerce_active()) {
        return false;
    }
    
    $consumer_key = get_option('woocommerce_api_consumer_key', '');
    $consumer_secret = get_option('woocommerce_api_consumer_secret', '');
    
    $headers = array();
    if ($consumer_key && $consumer_secret) {
        $headers['Authorization'] = 'Basic ' . base64_encode($consumer_key . ':' . $consumer_secret);
    }
    
    $wp_response = wp_remote_get(sprintf(
        '%s/wp-json/wc/v3/products/categories?per_page=%d',
        get_site_url(),
        $per_page
    ), array(
        'headers' => $headers
    ));
    
    if (is_wp_error($wp_response)) {
        return false;
    }
    
    $categories = json_decode(wp_remote_retrieve_body($wp_response), true);
    
    if (!is_array($categories)) {
        return false;
    }
    
    $formatted_categories = array();
    foreach ($categories as $category) {
        $formatted_categories[] = array(
            'id' => $category['id'],
            'name' => $category['name'],
            'slug' => $category['slug'],
            'description' => $category['description'] ?? '',
            'count' => $category['count'],
            'parent' => $category['parent'] ?? 0,
            'image' => $category['image']['src'] ?? null
        );
    }
    
    return $formatted_categories;
}

/**
 * Fetch WooCommerce product attributes
 *
 * @return array|false Formatted attributes array or false on failure
 */
function igny8_fetch_product_attributes() {
    if (!igny8_is_woocommerce_active()) {
        return false;
    }
    
    $consumer_key = get_option('woocommerce_api_consumer_key', '');
    $consumer_secret = get_option('woocommerce_api_consumer_secret', '');
    
    $headers = array();
    if ($consumer_key && $consumer_secret) {
        $headers['Authorization'] = 'Basic ' . base64_encode($consumer_key . ':' . $consumer_secret);
    }
    
    $wp_response = wp_remote_get(
        get_site_url() . '/wp-json/wc/v3/products/attributes',
        array(
            'headers' => $headers
        )
    );
    
    if (is_wp_error($wp_response)) {
        return false;
    }
    
    $attributes = json_decode(wp_remote_retrieve_body($wp_response), true);
    
    if (!is_array($attributes)) {
        return false;
    }
    
    $formatted_attributes = array();
    foreach ($attributes as $attribute) {
        // Get attribute terms
        $terms_response = wp_remote_get(sprintf(
            '%s/wp-json/wc/v3/products/attributes/%d/terms',
            get_site_url(),
            $attribute['id']
        ), array(
            'headers' => $headers
        ));
        
        $terms = array();
        if (!is_wp_error($terms_response)) {
            $terms_data = json_decode(wp_remote_retrieve_body($terms_response), true);
            if (is_array($terms_data)) {
                foreach ($terms_data as $term) {
                    $terms[] = array(
                        'id' => $term['id'],
                        'name' => $term['name'],
                        'slug' => $term['slug']
                    );
                }
            }
        }
        
        $formatted_attributes[] = array(
            'id' => $attribute['id'],
            'name' => $attribute['name'],
            'slug' => $attribute['slug'],
            'type' => $attribute['type'],
            'order_by' => $attribute['order_by'],
            'has_archives' => $attribute['has_archives'],
            'terms' => $terms
        );
    }
    
    return $formatted_attributes;
}