<?php
/**
 * AICP WooCommerce Integration
 *
 * Handles WooCommerce-specific functionality.
 *
 * @package AICP
 */

if (!defined('ABSPATH')) {
    exit;
}

/**
 * WooCommerce Integration Class
 */
class AICP_WooCommerce {

    /**
     * API handler
     *
     * @var AICP_API
     */
    private $api;

    /**
     * Settings handler
     *
     * @var AICP_Settings
     */
    private $settings;

    /**
     * Constructor
     *
     * @param AICP_API      $api      API handler
     * @param AICP_Settings $settings Settings handler
     */
    public function __construct(AICP_API $api, AICP_Settings $settings) {
        $this->api = $api;
        $this->settings = $settings;

        add_action('wp_ajax_aicp_test_woocommerce', array($this, 'ajax_test_woocommerce'));
        add_action('wp_ajax_aicp_send_test_product', array($this, 'ajax_send_test_product'));
    }

    /**
     * Check if WooCommerce integration is available
     *
     * @return bool
     */
    public function is_available() {
        // Check if connected and tier supports WooCommerce
        $tier = $this->settings->get_subscription_tier();
        $supported_tiers = array('Professional', 'Business', 'Enterprise');
        return $this->settings->is_connected() && in_array($tier, $supported_tiers, true);
    }

    /**
     * Get WooCommerce product categories
     *
     * @return array
     */
    public function get_product_categories() {
        if (!function_exists('get_terms')) {
            return array();
        }

        $categories = get_terms(array(
            'taxonomy'   => 'product_cat',
            'hide_empty' => false,
            'orderby'    => 'name',
            'order'      => 'ASC'
        ));

        if (is_wp_error($categories)) {
            return array();
        }

        return array_map(function ($term) {
            return array(
                'id'    => $term->term_id,
                'name'  => $term->name,
                'slug'  => $term->slug,
                'count' => $term->count
            );
        }, $categories);
    }

    /**
     * Check if WooCommerce REST API is enabled
     *
     * @return bool
     */
    public function is_rest_api_enabled() {
        // Check if REST API endpoint exists
        $rest_url = get_rest_url(null, 'wc/v3/products');
        return !empty($rest_url);
    }

    /**
     * AJAX: Test WooCommerce connection
     */
    public function ajax_test_woocommerce() {
        check_ajax_referer('aicp_woocommerce_nonce', 'nonce');

        if (!current_user_can('manage_aicp_settings')) {
            wp_send_json_error(array('message' => __('Permission denied.', 'ai-content-plan')));
        }

        // Check if WooCommerce is active
        if (!aicp_bridge()->is_woocommerce_active()) {
            wp_send_json_error(array('message' => __('WooCommerce is not active.', 'ai-content-plan')));
        }

        // Check REST API
        if (!$this->is_rest_api_enabled()) {
            wp_send_json_error(array(
                'message' => __('WooCommerce REST API is not available.', 'ai-content-plan')
            ));
        }

        wp_send_json_success(array(
            'message'    => __('WooCommerce is properly configured.', 'ai-content-plan'),
            'categories' => $this->get_product_categories()
        ));
    }

    /**
     * AJAX: Send a test product to AICP
     */
    public function ajax_send_test_product() {
        check_ajax_referer('aicp_woocommerce_nonce', 'nonce');

        if (!current_user_can('manage_aicp_settings')) {
            wp_send_json_error(array('message' => __('Permission denied.', 'ai-content-plan')));
        }

        // Get a random product
        $products = wc_get_products(array(
            'limit'   => 1,
            'orderby' => 'rand',
            'status'  => 'publish'
        ));

        if (empty($products)) {
            wp_send_json_error(array(
                'message' => __('No published products found to test with.', 'ai-content-plan')
            ));
        }

        $product = $products[0];

        // This would typically send product data to AICP
        // For now, just confirm the product was found
        wp_send_json_success(array(
            'message' => sprintf(
                /* translators: %s: product name */
                __('Test product found: %s', 'ai-content-plan'),
                $product->get_name()
            ),
            'product' => array(
                'id'    => $product->get_id(),
                'name'  => $product->get_name(),
                'price' => $product->get_price()
            )
        ));
    }
}