<?php
/**
 * Uninstall handler — clean up all generated files and options.
 *
 * @package AI_Ready_WP
 */

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

// Initialize WP_Filesystem first (needed for file cleanup). It can come back
// unavailable on a site where WordPress cannot connect to the filesystem —
// calling methods on the null global was a fatal error during uninstall.
global $wp_filesystem;
if ( ! function_exists( 'WP_Filesystem' ) ) {
    require_once ABSPATH . 'wp-admin/includes/file.php';
}
if ( empty( $wp_filesystem ) ) {
    WP_Filesystem();
}
$airewp_fs = empty( $wp_filesystem ) ? null : $wp_filesystem;

// Read settings BEFORE deleting them (IndexNow key needed for file cleanup)
$airewp_settings = get_option( 'airewp_settings', [] );

// Delete where the plugin actually writes: AIREWP_ROOT_PATH is defined at
// plugin-load time, where get_home_path() is never available — so runtime
// writes always land in ABSPATH. Using get_home_path() here would clean the
// wrong directory on subdirectory installs.
$airewp_root = ABSPATH;

// Remove generated files
$airewp_files_to_remove = [
    $airewp_root . '.well-known/agents.json',
    $airewp_root . '.well-known/agent-card.json',
    $airewp_root . '.well-known/agent.json',
    $airewp_root . '.well-known/mcp.json',
    $airewp_root . 'llms.txt',
    $airewp_root . 'llms-full.txt',
];

if ( null !== $airewp_fs ) {
    foreach ( $airewp_files_to_remove as $airewp_file ) {
        if ( $airewp_fs->exists( $airewp_file ) ) {
            $airewp_fs->delete( $airewp_file );
        }
    }

    // Remove IndexNow key file (dynamic name)
    if ( ! empty( $airewp_settings['indexnow_key'] ) ) {
        $airewp_key_file = $airewp_root . $airewp_settings['indexnow_key'] . '.txt';
        if ( $airewp_fs->exists( $airewp_key_file ) ) {
            $airewp_fs->delete( $airewp_key_file );
        }
    }

    // Remove .well-known dir if empty
    $airewp_well_known = $airewp_root . '.well-known/';
    if ( $airewp_fs->is_dir( $airewp_well_known ) && count( (array) $airewp_fs->dirlist( $airewp_well_known ) ) === 0 ) {
        $airewp_fs->rmdir( $airewp_well_known );
    }
}

// Clear scheduled crons
wp_clear_scheduled_hook( 'airewp_cron_regenerate' );

// Clean up SEO post meta via core API (no direct SQL)
$airewp_seo_meta_keys = [
    '_airewp_seo_title',
    '_airewp_seo_desc',
    '_airewp_seo_keyword',
    '_airewp_seo_noindex',
    '_airewp_seo_nofollow',
    '_airewp_seo_canonical',
];

foreach ( $airewp_seo_meta_keys as $airewp_meta_key ) {
    delete_post_meta_by_key( $airewp_meta_key );
}

// Remove options (AFTER file cleanup, since we needed indexnow_key above)
delete_option( 'airewp_settings' );
delete_option( 'airewp_crawler_stats' );
delete_option( 'airewp_crawler_log' );
delete_option( 'airewp_sitemap_last_generated' );
delete_option( 'airewp_generated_version' );
delete_option( 'airewp_write_status' );
delete_option( 'airewp_robots_migrated' );
delete_option( 'airewp_robots_notice' );
delete_option( 'airewp_seo_yielding' );
delete_transient( 'airewp_upgrade_rebuild' );
delete_transient( 'airewp_ondemand_rebuild' );

// Clean up transients. Plugin transients use dynamic suffixes (caches,
// rate-limit buckets), so a LIKE query on the options table is the only
// way to remove them all — core has no wildcard transient API. One-time
// cleanup at uninstall, caching is irrelevant here.
global $wpdb;
$wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
    $wpdb->prepare(
        "DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
        '_transient_airewp_%',
        '_transient_timeout_airewp_%'
    )
);