<?php
/**
 * Uninstall script for AdsDestroyer plugin.
 *
 * Runs when the plugin is deleted from the WordPress admin and removes every
 * option, user meta entry, transient and log file the plugin ever created.
 * 
 * @since 1.0.0
 */

// If uninstall not called from WordPress, exit.
if (!defined('WP_UNINSTALL_PLUGIN')) {
    exit;
}

/**
 * Delete the plugin data of a single site.
 *
 * @since 1.0.29
 */
function adsd_uninstall_current_site(): void {
    global $wpdb;

    delete_option('adsd_new_options');
    delete_option('adsd_logging_enabled');
    delete_option('adsd_log_levels');
    delete_option('adsd_log_level');
    delete_option('adsd_activation_time');
    delete_option('adsd_transient_registry');

    wp_clear_scheduled_hook('adsd_new_cleanup_expired_rules');

    $like = $wpdb->esc_like('adsd_') . '%';

    // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- Uninstall script requires direct queries
    $wpdb->query(
        $wpdb->prepare(
            "DELETE FROM {$wpdb->usermeta} WHERE meta_key LIKE %s",
            $like
        )
    );

    // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- Uninstall script requires direct queries
    $wpdb->query(
        $wpdb->prepare(
            "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s",
            $like
        )
    );

    // Transients live under a prefixed option name, so they need their own masks.
    // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- Uninstall script requires direct queries
    $wpdb->query(
        $wpdb->prepare(
            "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
            '_transient_' . $wpdb->esc_like('adsd_') . '%',
            '_transient_timeout_' . $wpdb->esc_like('adsd_') . '%'
        )
    );
}

/**
 * Delete every log directory the plugin could have created.
 *
 * The directory name contains a salt-derived suffix, so the whole uploads root
 * is scanned by prefix instead of guessing the current name.
 *
 * @since 1.0.29
 */
function adsd_uninstall_log_directories(): void {
    $uploads = wp_get_upload_dir();
    $basedir = $uploads['basedir'] ?? '';

    if ($basedir === '' || !is_dir($basedir)) {
        return;
    }

    $directories = glob($basedir . '/ads-destroyer-logs*', GLOB_ONLYDIR);

    if (!is_array($directories)) {
        return;
    }

    foreach ($directories as $directory) {
        // scandir() is used instead of glob() so the .htaccess guard is included.
        $entries = scandir($directory);

        if (is_array($entries)) {
            foreach ($entries as $entry) {
                if ($entry === '.' || $entry === '..') {
                    continue;
                }

                if (is_file($directory . '/' . $entry)) {
                    wp_delete_file($directory . '/' . $entry);
                }
            }
        }

        // phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- WP_Filesystem is not available during uninstall
        @rmdir($directory);
    }
}

if (is_multisite()) {
    delete_site_option('adsd_new_network_options');

    foreach (get_sites(['fields' => 'ids']) as $adsd_site_id) {
        switch_to_blog((int) $adsd_site_id);
        adsd_uninstall_current_site();
        adsd_uninstall_log_directories();
        restore_current_blog();
    }
} else {
    adsd_uninstall_current_site();
    adsd_uninstall_log_directories();
}