<?php
/**
 * Uninstall handler for AI Blackout.
 *
 * @package AIBlackout
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

/**
 * Removes every trace of the plugin.
 *
 * @return void
 */
function aiblackout_uninstall() {
	$path = plugin_dir_path( __FILE__ );

	if ( ! file_exists( $path . 'vendor/autoload.php' ) ) {
		return;
	}

	require_once $path . 'vendor/autoload.php';

	if ( ! defined( 'AIBLACKOUT_PATH' ) ) {
		define( 'AIBLACKOUT_PATH', $path );
	}

	$settings = get_option( 'aiblackout_settings', array() );
	$preserve = is_array( $settings ) && ! empty( $settings['preserve_settings'] );

	aiblackout_uninstall_files();

	wp_clear_scheduled_hook( 'aiblackout_prune_logs' );

	\AIBlackout\Log\BlockedCalls::uninstall();

	// Per-user self-test results.
	aiblackout_uninstall_transients();

	foreach ( \AIBlackout\Core\Settings::BACKUP_OPTIONS as $option ) {
		delete_option( $option );
	}

	delete_option( \AIBlackout\Enforcement\Suspension::LEGACY_OPTION );

	delete_option( \AIBlackout\Audit\ProtectionRecord::STATE_OPTION );
	delete_option( \AIBlackout\Audit\ProtectionRecord::TOTAL_OPTION );

	delete_option( \AIBlackout\Core\Upgrade::VERSION_OPTION );
	delete_option( \AIBlackout\Core\Upgrade::PREVIOUS_OPTION );
	aiblackout_uninstall_user_meta( \AIBlackout\Admin\WhatsNewScreen::META_SEEN );
	aiblackout_uninstall_user_meta( \AIBlackout\Admin\ReviewRequest::META_STATE );

	if ( $preserve ) {
		return;
	}

	delete_option( 'aiblackout_settings' );
	delete_option( 'aiblackout_declaration_history' );
}

/**
 * Reverts the marker-fenced blocks written to .htaccess and robots.txt.
 *
 * @return void
 */
function aiblackout_uninstall_files() {
	try {
		$plugin = \AIBlackout\Core\Plugin::instance();

		$plugin->htaccess()->revert();
		$plugin->robots()->revert_physical_file();
	} catch ( \Throwable $e ) {
		return;
	}
}

/**
 * Deletes one of this plugin's user meta keys, for every user.
 *
 * @param string $key Meta key.
 * @return void
 */
function aiblackout_uninstall_user_meta( $key ) {
	delete_metadata( 'user', 0, $key, '', true );
}

/**
 * Deletes every transient this plugin created, self-test results included.
 *
 * @return void
 */
function aiblackout_uninstall_transients() {
	global $wpdb;

	// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- One-off cleanup at uninstall; there is no API for deleting transients by prefix.
	$names = $wpdb->get_col(
		$wpdb->prepare(
			"SELECT option_name FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
			$wpdb->esc_like( '_transient_aiblackout_' ) . '%',
			$wpdb->esc_like( '_transient_timeout_aiblackout_' ) . '%'
		)
	);

	foreach ( (array) $names as $name ) {
		delete_option( $name );
	}
}

aiblackout_uninstall();