LoginHandler

using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.SceneManagement;

public class LoginHandler 
{
    private NetworkDataHandler plugin;

    public LoginHandler(NetworkDataHandler plugin)
    {
        this.plugin = plugin;
        plugin.LoginRequestReplyReceived += OnLoginRequestReply;
    }

    ~LoginHandler()
    {
        plugin.LoginRequestReplyReceived -= OnLoginRequestReply;
    }
    
    public static void Login(string username, string password)
    {
        if (!Utility.isUsername(username))
        {
            Lobby.ChangeAuthenticationText("Invalid username entered!", Color.red);
            return;
        }

        if (password == null || password == "")
        {
            Lobby.ChangeAuthenticationText("Please enter your password.", Color.red);
            return;
        }

        Lobby.DisableInput();
        Client.GetInstance().SendToServer(QosType.Reliable, new Net_LoginRequest(username, Utility.Sha256FromString(password)));
    }
    
    private void OnLoginRequestReply(object sender, LoginRequestReplyArgs args)
    {
        switch (args.flag)
        {
            case ByteFlag.UnexpectedFlag:
                break;
            case ByteFlag.Succes:
                SceneManager.LoadScene("Scene2");
                return;
            case ByteFlag.InvalidDataReceived:
                Lobby.ChangeAuthenticationText("Invalid data received by the server", Color.red);
                break;
            case ByteFlag.InvalidUsernameOrPassword:
                Lobby.ChangeAuthenticationText("Invalid username or password", Color.red);
                break;
            case ByteFlag.InvalidUsername:
                Lobby.ChangeAuthenticationText("Invalid username", Color.red);
                break;
            case ByteFlag.InvalidPassword:
                Lobby.ChangeAuthenticationText("Invalid password", Color.red);
                break;
            case ByteFlag.BlackListedIpAdress:
                Lobby.ChangeAuthenticationText("Your connection has been blacklisted. If this is a mistake, please file a support ticket.", Color.red);
                Lobby.OpenConnectToServerPanel();
                return;
            case ByteFlag.BannedAccount:
                Lobby.ChangeAuthenticationText("Your account has been banned. If this is a mistake, please file a support ticket.", Color.red);
                Lobby.OpenConnectToServerPanel();
                return;
            default:
                break;
        }
        Lobby.GetInstance().SelectFirstInputField();
        Lobby.EnableInput();
    }
}