<?php
/**
 * Versioned settings migrations.
 *
 * @package ActionPanelAI
 */

namespace ActionPanelAI\Services;

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

/**
 * Applies idempotent option migrations for plugin settings.
 */
class SettingsMigrator {
	public const TARGET_VERSION = 1;

	private const OBSOLETE_LOG_READ_OPTION_KEYS = array(
		'actionpanel_ai_log_reads_active',
		'actionpanel_ai_log_reads_backend',
		'actionpanel_ai_log_reads_path',
		'actionpanel_ai_log_reads_expires_at',
		'actionpanel_ai_log_reads_health',
	);

	private const OBSOLETE_LOG_READ_CRON_HOOK = 'actionpanel_ai_disable_log_reads';

	public function __construct( private SettingsRepository $settings ) {
	}

	/**
	 * Apply all pending settings migrations.
	 */
	public function migrate(): void {
		if ( $this->settings->get_settings_version() >= self::TARGET_VERSION ) {
			return;
		}

		$this->migrate_request_gate_option();
		$this->delete_obsolete_log_read_options();
		wp_clear_scheduled_hook( self::OBSOLETE_LOG_READ_CRON_HOOK );

		$this->settings->set_settings_version( self::TARGET_VERSION );
	}

	/**
	 * Move the old assistant gate option into the request-gate option.
	 */
	private function migrate_request_gate_option(): void {
		$current_value = get_option( SettingsRepository::OPTION_ALLOW_REQUESTS, null );
		$legacy_value  = get_option( SettingsRepository::OPTION_ENABLE_ASSISTANT, null );
		if ( null === $legacy_value ) {
			return;
		}

		if ( null === $current_value ) {
			update_option( SettingsRepository::OPTION_ALLOW_REQUESTS, (bool) $legacy_value ? 1 : 0 );
		}
		delete_option( SettingsRepository::OPTION_ENABLE_ASSISTANT );
	}

	/**
	 * Remove option state from the retired temporary log-read window model.
	 */
	private function delete_obsolete_log_read_options(): void {
		foreach ( self::OBSOLETE_LOG_READ_OPTION_KEYS as $option_key ) {
			delete_option( $option_key );
		}
	}
}