import Foundation
#if canImport(FoundationNetowrking)
import FoundationNetworking
#endif

struct GatewayClient {
    let gatewayURL: URL

    func openConnection() async throws {
        let ws = URLSession.shared.webSocketTask(with: gatewayURL.appending(component: "?v=10&encoding=json"))
        ws.resume()
        let message =  try await ws.receive()
        guard case .string(let str) = message else { throw GatewayError.invalidMessage }
        print(str)
        let json = JSONDecoder()
        let gwMessage = try json.decode(GatewayMessage.self, from: Data(str.utf8))
        dump(gwMessage)
        guard case .hello(let hello) = gwMessage.d else { print("whoops"); return }
        dump(hello)
    }

}

public enum GatewayError: Error {
    case invalidMessage
    case invalidOpcode
}