<?php

/**
 * Plugin Name: AI Translate
 * Description: AI based translation plugin. Adding 35 languages in a few clicks. Fast caching, SEO-friendly, and cost-effective.
 * Author: NetCare
 * Author URI: https://netcare.nl/
 * Version: 2.4.3
 * Requires at least: 6.2
 * Tested up to: 7.1
 * Requires PHP: 8.0
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: ai-translate
 * Domain Path: /languages
 */

// Do not allow direct access.
if (!defined('ABSPATH')) {
    exit;
}

// Routing & language-detection in this file inspects $_GET / $_SERVER read-only to decide which
// translated URL to render; no plugin state is changed in those branches. State-changing AJAX
// endpoints (cache delete/warm, language settings) verify nonces explicitly. Suppressing the
// "Recommended" nonce sniff at file level avoids hundreds of false positives on these reads.
// phpcs:disable WordPress.Security.NonceVerification.Recommended

/**
 * Return the WordPress sub-directory path for subfolder installs (e.g. '/moretti').
 * Returns an empty string when WordPress is installed at the domain root.
 * Result is cached statically; safe to call many times per request.
 *
 * @return string  Sub-directory prefix without trailing slash, e.g. '/moretti' or ''.
 */
function ai_translate_site_path(): string
{
    static $p = null;
    if ($p === null) {
        // Use get_option('home') directly to bypass any home_url filters (e.g. the language-prefix
        // filter registered by this plugin), so we always get the real installation path.
        $raw = trailingslashit((string) get_option('home', get_option('siteurl', '')));
        $p   = rtrim((string) wp_parse_url($raw, PHP_URL_PATH), '/');
    }
    return $p;
}

/**
 * Strip the WordPress sub-directory prefix from a URL path derived from REQUEST_URI.
 * On root installs the path is returned unchanged (ai_translate_site_path() === '').
 *
 * @param string $path  Full request path, e.g. '/moretti/en/contact/'.
 * @return string       Site-relative path, e.g. '/en/contact/'.
 */
function ai_translate_strip_site_path(string $path): string
{
    $sub = ai_translate_site_path();
    if ($sub === '') {
        return $path;
    }
    if (str_starts_with($path, $sub . '/')) {
        return substr($path, strlen($sub)) ?: '/';
    }
    if ($path === $sub) {
        return '/';
    }
    return $path;
}

/**
 * Subfolder support: prepend the WordPress sub-directory to bare redirect paths
 * generated by AI Translate (e.g. '/' → '/moretti/', '/en/' → '/moretti/en/').
 * No-op on root installations where ai_translate_site_path() returns ''.
 */
add_filter('wp_redirect', function (string $location): string {
    $sub = ai_translate_site_path();
    if ($sub === '') {
        return $location;
    }
    // Leave absolute URLs and paths already starting with the sub-directory alone.
    if (strpos($location, '://') !== false) {
        return $location;
    }
    if (str_starts_with($location, $sub . '/') || $location === $sub) {
        return $location;
    }
    // Only intercept root or language-prefixed paths to avoid interfering with other plugins.
    if ($location === '/' || preg_match('#^/[a-z]{2}(?:/|$)#i', $location)) {
        return $sub . $location;
    }
    return $location;
}, 5);

/**
 * Load the plugin text domain with locale fallback chain.
 *
 * @param bool $force_user_locale When true, forces the logged-in user's locale instead of the site locale.
 * @return void
 */
function ai_translate_load_textdomain($force_user_locale = false)
{
    // If forced to use user locale (for admin)
    if ($force_user_locale && is_user_logged_in()) {
        $locale = get_user_locale();
    } else {
        $locale = get_locale();
    }

    $plugin_dir = plugin_dir_path(__FILE__);
    $lang_dir = $plugin_dir . 'languages/';

    // Build fallback chain: exact -> base -> language code
    $fallback_locales = array($locale);
    
    // If locale has underscores, extract base locale (e.g., nl_NL_formal -> nl_NL)
    if (strpos($locale, '_') !== false) {
        $parts = explode('_', $locale);
        if (count($parts) >= 2) {
            $base_locale = $parts[0] . '_' . $parts[1];
            if (!in_array($base_locale, $fallback_locales, true)) {
                $fallback_locales[] = $base_locale;
            }
        }
        // Also try language code only (e.g., nl_NL -> nl)
        if (count($parts) >= 1) {
            $lang_only = $parts[0];
            if (!in_array($lang_only, $fallback_locales, true)) {
                $fallback_locales[] = $lang_only;
            }
        }
    }
    
    // Try each locale in fallback chain
    foreach ($fallback_locales as $try_locale) {
        $mofile = $lang_dir . 'ai-translate-' . $try_locale . '.mo';
        if (file_exists($mofile)) {
            // Unload existing textdomain first if reloading
            if ($force_user_locale && is_textdomain_loaded('ai-translate')) {
                unload_textdomain('ai-translate');
            }
            load_textdomain('ai-translate', $mofile);
            if (is_textdomain_loaded('ai-translate')) {
                return;
            }
        }
    }
    
    // Final fallback to standard load_plugin_textdomain. Plugin ships its own .mo files in
    // /languages/, so we cannot rely solely on WordPress 4.6+ automatic translation loading
    // (which only picks up /wp-content/languages/plugins/ai-translate-*.mo files).
    // phpcs:ignore PluginCheck.CodeAnalysis.DiscouragedFunctions.load_plugin_textdomainFound -- needed for bundled translations
    load_plugin_textdomain(
        'ai-translate',
        false,
        dirname(plugin_basename(__FILE__)) . '/languages/'
    );
}

// Load textdomain for frontend with site locale
add_action('plugins_loaded', function() {
    ai_translate_load_textdomain(); // Load with site locale for frontend
}, 1);

// For admin pages, load textdomain with user locale (this overrides the frontend load)
add_action('admin_init', function() {
    if (is_user_logged_in()) {
        $user_locale = get_user_locale();
        $site_locale = get_locale();

        // Always load user locale for admin, even if same as site locale
        ai_translate_load_textdomain(true); // Force load with user locale
    }
}, 1); // High priority to override any other loads


// Include core/admin and runtime classes.
define('AI_TRANSLATE_PLUGIN_FILE', __FILE__);

require_once __DIR__ . '/includes/class-ai-translate-core.php';
require_once __DIR__ . '/includes/helpers.php';
require_once __DIR__ . '/includes/request-path.php';
require_once __DIR__ . '/includes/routing-query.php';
require_once __DIR__ . '/includes/reasoning-helpers.php';
require_once __DIR__ . '/includes/api-keys.php';
require_once __DIR__ . '/includes/language-redirect.php';
require_once __DIR__ . '/includes/admin-page.php';
require_once __DIR__ . '/includes/class-ai-lang.php';
require_once __DIR__ . '/includes/class-ai-cache.php';
require_once __DIR__ . '/includes/class-ai-cache-meta.php';
require_once __DIR__ . '/includes/class-ai-dom.php';
require_once __DIR__ . '/includes/class-ai-segment-store.php';
require_once __DIR__ . '/includes/class-ai-batch.php';
require_once __DIR__ . '/includes/class-ai-seo.php';
require_once __DIR__ . '/includes/class-ai-url.php';
require_once __DIR__ . '/includes/class-ai-ob.php';
require_once __DIR__ . '/includes/class-ai-slugs.php';
require_once __DIR__ . '/includes/class-ai-prewarm.php';
require_once __DIR__ . '/includes/class-ai-rest-strings.php';
require_once __DIR__ . '/includes/class-ai-settings-sanitizer.php';
\AITranslate\AI_Prewarm::init();
require_once __DIR__ . '/includes/class-ai-404-recovery.php';
require_once __DIR__ . '/includes/class-ai-sitemap.php';

// Initialize sitemap integration
\AITranslate\AI_Sitemap::init();


require_once __DIR__ . '/includes/attr-transients.php';

require_once __DIR__ . '/includes/rewrite-rules.php';

/**
 * Add a 5-star rating link to the plugin row on the Plugins screen.
 *
 * This renders a golden 5-star link that points to the plugin's WordPress.org page,
 * similar to popular plugins. Only affects the AI Translate row.
 *
 * @param string[] $links Existing meta links for the row.
 * @param string   $file  Plugin basename for the current row.
 * @return string[]
 */
add_filter('plugin_row_meta', function (array $links, $file) {
    if ($file !== plugin_basename(__FILE__)) {
        return $links;
    }

    $url = 'https://wordpress.org/plugins/ai-translate/';
    $label = __('Rate on WordPress.org', 'ai-translate');
    $stars = '★★★★★';

    $links[] = sprintf(
        '<a href="%1$s" target="_blank" rel="noopener noreferrer" aria-label="%2$s" style="color:#ffb900;text-decoration:none;">%3$s</a>',
        esc_url($url),
        esc_attr($label),
        esc_html($stars)
    );

    return $links;
}, 10, 2);

/**
 * Plugin activation: flush rewrite rules and create database tables.
 */
register_activation_hook(__FILE__, function () {
    // Ensure rules are registered before flushing
    ai_translate_register_rewrite_rules();

    // Automatically set permalinks to 'post-name' if they're currently 'plain'
    // since the plugin requires rewrite rules to function
    $permalink_structure = get_option('permalink_structure');
    if ($permalink_structure === '' || $permalink_structure === null) {
        // Set to 'post-name' structure which is /%postname%/
        update_option('permalink_structure', '/%postname%/');
    }

    flush_rewrite_rules();

    // Create cache metadata table
    \AITranslate\AI_Cache_Meta::create_table();
    // Create the segment store and schedule its daily cleanup
    \AITranslate\AI_Segment_Store::create_table();
    \AITranslate\AI_Segment_Store::schedule_purge();
});

register_deactivation_hook(__FILE__, function () {
    \AITranslate\AI_Segment_Store::unschedule_purge();
});

// Daily removal of segments older than the cache duration; also schedules itself for existing installs.
add_action(\AITranslate\AI_Segment_Store::purge_hook(), ['\\AITranslate\\AI_Segment_Store', 'run_purge']);
add_action('init', ['\\AITranslate\\AI_Segment_Store', 'schedule_purge']);

// Background measurement of thinking models (queued after a successful API validation).
add_action(\AITranslate\AI_Translate_Core::PROBE_HOOK, ['\\AITranslate\\AI_Translate_Core', 'run_scheduled_probe'], 10, 2);

require_once __DIR__ . '/includes/request-filters.php';

require_once __DIR__ . '/includes/frontend-output.php';

require_once __DIR__ . '/includes/catalog-strings.php';

/**
 * REST endpoint for dynamic UI attribute translation.
 */
add_action('rest_api_init', ['\\AITranslate\\AI_REST_Strings', 'register']);

require_once __DIR__ . '/includes/request-routing.php';

require_once __DIR__ . '/includes/permalinks.php';

require_once __DIR__ . '/includes/cache-invalidation.php';

/**
 * One-time warmup: generate translated slugs for existing top-level pages so
 * language-prefixed URLs immediately resolve (prevents blank pages before first visit).
 * Mirrors robustness in the original implementation by pre-seeding the slug map.
 */
// Runs in WP-Cron, a batch at a time (see AI_Slugs::run_warmup); init only queues it.
add_action(\AITranslate\AI_Slugs::WARMUP_HOOK, ['\\AITranslate\\AI_Slugs', 'run_warmup'], 10, 1);
add_action('init', ['\\AITranslate\\AI_Slugs', 'schedule_warmup'], 99);

require_once __DIR__ . '/includes/fallback-routing.php';

/**
 * Add Settings quick link on the Plugins page.
 */
add_filter('plugin_action_links_' . plugin_basename(__FILE__), function ($links) {
    $url = admin_url('admin.php?page=ai-translate');
    $settings_link = '<a href="' . esc_url($url) . '">' . esc_html__('Instellingen', 'ai-translate') . '</a>';
    array_unshift($links, $settings_link);
    return $links;
});


require_once __DIR__ . '/includes/query-filters.php';

require_once __DIR__ . '/includes/language-switcher.php';

require_once __DIR__ . '/includes/nav-menus.php';