<?php
/**
 * Plugin Name:       AdvocateLoop for WooCommerce
 * Plugin URI:        https://advocateloop.com/integrations/woocommerce
 * Description:       Adds WooCommerce store tracking to AdvocateLoop: referral discounts at checkout, conversion tracking on payment, and refund handling. Requires the AdvocateLoop plugin and WooCommerce.
 * Version:           1.0.0
 * Requires at least: 5.8
 * Requires PHP:      7.4
 * Requires Plugins:  advocateloop, woocommerce
 * Author:            AdvocateLoop
 * Author URI:        https://advocateloop.com
 * License:           GPLv2 or later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       advocateloop-for-woocommerce
 *
 * AdvocateLoop for WooCommerce is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or (at your
 * option) any later version.
 */

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

define('ADVOCATE_LOOP_WOO_VERSION', '1.0.0');
define('ADVOCATE_LOOP_WOO_DIR', plugin_dir_path(__FILE__));
define('ADVOCATE_LOOP_WOO_URL', plugin_dir_url(__FILE__));
define('ADVOCATE_LOOP_WOO_FILE', __FILE__);

/**
 * Declare compatibility with WooCommerce High-Performance Order Storage (HPOS).
 */
add_action('before_woocommerce_init', function () {
    if (class_exists(\Automattic\WooCommerce\Utilities\FeaturesUtil::class)) {
        \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility(
            'custom_order_tables',
            __FILE__,
            true
        );
    }
});

// WooCommerce-specific documentation, and this add-on's marketing page.
define('ADVOCATE_LOOP_WOO_DOCS_URL', 'https://docs.advocateloop.com/quickstart-woocommerce/');
define('ADVOCATE_LOOP_WOO_SITE_URL', 'https://advocateloop.com/integrations/woocommerce');

function advocate_loop_woo_utm($url, $campaign) {
    if (function_exists('advocate_loop_utm')) {
        return advocate_loop_utm($url, $campaign);
    }
    return add_query_arg([
        'utm_source'   => 'wordpress-plugin',
        'utm_medium'   => 'plugin',
        'utm_campaign' => $campaign,
    ], $url);
}


define('ADVOCATE_LOOP_WOO_MIN_EXT_API', 1);

/**
 * Autoloader scoped to this add-on's namespace subtree. Stacks with core's
 * autoloader; declines anything outside AdvocateLoop\WooCommerce\.
 */
spl_autoload_register(function ($class) {
    $prefix = 'AdvocateLoop\\WooCommerce\\';
    $len = strlen($prefix);
    if (strncmp($prefix, $class, $len) !== 0) {
        return;
    }
    $relative = substr($class, $len);
    $file = ADVOCATE_LOOP_WOO_DIR . 'includes/WooCommerce/' . str_replace('\\', '/', $relative) . '.php';
    if (file_exists($file)) {
        require $file;
    }
});

/**
 * Safe accessor for this add-on's settings section in the AdvocateLoop core.
 */
function advocate_loop_woo_settings(): array {
    if (!function_exists('advocate_loop_get_settings')) {
        return [];
    }
    try {
        $settings = advocate_loop_get_settings('woocommerce');
        return is_array($settings) ? $settings : [];
    } catch (\Throwable $e) {
        // Defensive breadcrumb only — never breaks the site, just records why
        // defaults were used. Gated on WP_DEBUG so nothing is written in normal
        // production environments.
        if (defined('WP_DEBUG') && WP_DEBUG) {
            // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log -- debug-only diagnostic, guarded by WP_DEBUG.
            error_log('AdvocateLoop for WooCommerce: settings read failed (' . $e->getMessage() . '); using defaults.');
        }
        return [];
    }
}


function advocate_loop_woo_core_compatible(): bool {
    return function_exists('advocate_loop_get_settings')
        && defined('ADVOCATE_LOOP_EXT_API')
        && ADVOCATE_LOOP_EXT_API >= ADVOCATE_LOOP_WOO_MIN_EXT_API;
}

/**
 * Register the WooCommerce tab and platform provider into the core registry.
 */
add_action('advocate_loop_register_extensions', function () {
    if (!advocate_loop_woo_core_compatible()) {
        return;
    }

    \AdvocateLoop\Admin\Extensions::register_tab([
        'id'       => 'woocommerce',
        'label'    => __('WooCommerce', 'advocateloop-for-woocommerce'),
        'priority' => 20,
        'icon'     => '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="9" cy="21" r="1"/><circle cx="20" cy="21" r="1"/><path d="M1 1h4l2.68 13.39a2 2 0 0 0 2 1.61h9.72a2 2 0 0 0 2-1.61L23 6H6"/></svg>',
        'render'   => function () {
            include ADVOCATE_LOOP_WOO_DIR . 'includes/views/tab-woocommerce.php';
        },
    ]);

    // Upgrade tracking to the 'woocommerce' platform when WooCommerce is
    // active and the integration has not been disabled in settings.
    \AdvocateLoop\Admin\Extensions::register_platform('woocommerce', function () {
        if (!class_exists('WooCommerce')) {
            return false;
        }
        $woo = advocate_loop_woo_settings();
        return !(isset($woo['enabled']) && !$woo['enabled']);
    }, 20);
});

/**
 * Boot the integration. Runs after core's default-priority plugins_loaded
 * handler (advocate_loop_init at priority 10) so the core helpers, registry,
 * and ADVOCATE_LOOP_EXT_API constant are all defined.
 */
add_action('plugins_loaded', function () {
    if (!advocate_loop_woo_core_compatible()) {
        add_action('admin_notices', function () {
            if (!current_user_can('activate_plugins')) {
                return;
            }
            echo '<div class="notice notice-error"><p>';
            echo esc_html__('AdvocateLoop for WooCommerce needs the AdvocateLoop plugin (a compatible version) to be installed and active. Please install or update AdvocateLoop.', 'advocateloop-for-woocommerce');
            echo '</p></div>';
        });
        return;
    }

    if (!class_exists('WooCommerce')) {
        return;
    }

    if (function_exists('advocate_loop_is_connected') && advocate_loop_is_connected()) {
        (new \AdvocateLoop\WooCommerce\Integration())->init();
    }
}, 11);

/**
 * Enqueue the WooCommerce tab's settings script on the AdvocateLoop admin page.
 */
add_action('admin_enqueue_scripts', function ($hook) {
    if (strpos((string) $hook, 'advocate-loop') === false) {
        return;
    }
    wp_enqueue_script(
        'advocate-loop-woo-settings',
        ADVOCATE_LOOP_WOO_URL . 'assets/js/woo-settings.js',
        ['jquery', 'advocate-loop-settings-js'],
        ADVOCATE_LOOP_WOO_VERSION,
        true
    );
    wp_localize_script('advocate-loop-woo-settings', 'advocateLoopWooSettings', [
        'ajaxUrl' => admin_url('admin-ajax.php'),
        'nonce'   => wp_create_nonce('advocate_loop_admin_nonce'),
    ]);
}, 110);


add_filter('plugin_row_meta', function ($links, $file) {
    if ($file !== plugin_basename(ADVOCATE_LOOP_WOO_FILE)) {
        return $links;
    }

    $site_plain = esc_url(ADVOCATE_LOOP_WOO_SITE_URL);
    $site_utm   = esc_url(advocate_loop_woo_utm(ADVOCATE_LOOP_WOO_SITE_URL, 'plugins-screen-site'));
    foreach ($links as $i => $link) {
        if (strpos($link, $site_plain) !== false) {
            $links[$i] = str_replace($site_plain, $site_utm, $link);
            break;
        }
    }

    $links[] = '<a href="' . esc_url(advocate_loop_woo_utm(ADVOCATE_LOOP_WOO_DOCS_URL, 'plugins-screen-docs')) . '" target="_blank" rel="noopener noreferrer">' . esc_html__('Documentation', 'advocateloop-for-woocommerce') . '</a>';

    return $links;
}, 10, 2);