<?php
/**
 * MetaForge Engine — Uninstall Handler
 *
 * Runs automatically when the plugin is permanently deleted from the WordPress admin.
 * Removes the MU-plugin stub drop-in, capabilities, and cached transients.
 */

if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

// 1. Remove MU-plugin fallback stub file
if ( defined( 'WPMU_PLUGIN_DIR' ) ) {
	$metaforge_stub_file = WPMU_PLUGIN_DIR . '/metaforge-stub.php';
	if ( file_exists( $metaforge_stub_file ) && wp_is_writable( $metaforge_stub_file ) ) {
		wp_delete_file( $metaforge_stub_file );
	}
}

// 2. Remove capability from administrator role
$metaforge_role = get_role( 'administrator' );
if ( $metaforge_role && $metaforge_role->has_cap( 'manage_metaforge' ) ) {
	$metaforge_role->remove_cap( 'manage_metaforge' );
}

// 3. Drop custom database tables
global $wpdb;
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.DirectDatabaseQuery.SchemaChange, WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- Hardcoded table name with $wpdb->prefix cannot be prepared in WP < 6.2; dropping custom table upon uninstall is expected behavior.
$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->prefix}metaforge_ai_memory" );

// 4. Clear transient caches & leftover options
delete_transient( 'metaforge_all_field_groups_cache' );
delete_transient( 'metaforge_field_flat_map' );
delete_transient( 'metaforge_github_updater' );
delete_option( 'metaforge_role_restrictions' );
delete_option( 'metaforge_ai_settings' );
delete_option( 'metaforge_db_version' );
delete_option( 'metaforge_post_order_settings' );
delete_option( 'metaforge_taxonomy_order_settings' );