import Foundation

/// Hysteria2 in-process runner.
/// Uses NavisCore when linked; otherwise returns a clear error (cannot mix a second Go runtime with LibXray).
enum Hy2CoreRunner {
    private static var running = false

    static func start(configPath: String, workDir: String) throws {
        #if canImport(NavisCore)
        NavisCoreSetWorkDir(workDir)
        if let yaml = try? String(contentsOfFile: configPath, encoding: .utf8) {
            var error: NSError?
            // Generated gomobile name may vary; keep a stable Swift wrapper once NavisCore is produced.
            _ = yaml
            _ = error
        }
        throw TunnelError.message("Hysteria2: NavisCore.StartHy2YAML ещё не подключён в этой сборке")
        #else
        // LibXray already occupies the Go runtime in this appex.
        // Unified NavisCore (Xray+Hy2) is the path forward; until then ask users for Xray links.
        _ = configPath
        _ = workDir
        running = false
        throw TunnelError.message(
            "Hysteria2: в этой iOS-сборке активен LibXray (VLESS/VMess/Trojan). Hy2 требует единый NavisCore — пока используйте Xray-ссылку."
        )
        #endif
    }

    static func stop() {
        #if canImport(NavisCore)
        _ = NavisCoreStop()
        #endif
        running = false
        LibXrayCore.stop() // no-op if not xray
    }
}