using PluginLoader.Stats;
using Sandbox.Graphics.GUI;
using VRageMath;

namespace PluginLoader.GUI;

public static class PlayerConsent
{
    public static bool ConsentRequested => !string.IsNullOrEmpty(Main.Instance.Config.DataHandlingConsentDate);

    public static bool ConsentGiven => Main.Instance.Config.DataHandlingConsent;
    public static event Action OnConsentChanged;

    public static void ShowDialog(Action continuation = null)
    {
        MyGuiSandbox.AddScreen(
            ConfirmationDialog.CreateMessageBox(buttonType: MyMessageBoxButtonsType.YES_NO_CANCEL,
                                                messageText: new(
                                                    "               Would you like to rate plugins and inform developers?\r\n" +
                                                    "\r\n" +
                                                    "\r\n" +
                                                    "YES: Plugin Loader will send the list of enabled plugins to our server\r\n" +
                                                    "         each time the game starts. Your Steam ID is sent only in hashed form,\r\n" +
                                                    "         which makes it hard to identify you. Plugin usage statistics is kept\r\n" +
                                                    "         for up to 90 days. Votes on plugins are preserved indefinitely.\r\n" +
                                                    "         Server log files and database backups may be kept up to 90 days.\r\n" +
                                                    "         Location of data storage: European Union\r\n" +
                                                    "\r\n" +
                                                    "\r\n" +
                                                    "NO:   None of your data will be sent to nor stored on our statistics server.\r\n" +
                                                    "         Plugin Loader will still connect to download the statistics shown.\r\n"),
                                                size: new Vector2(0.6f, 0.6f),
                                                messageCaption: new("Consent"),
                                                callback: result => GetConfirmation(result, continuation)));
    }

    private static void GetConfirmation(MyGuiScreenMessageBox.ResultEnum result, Action continuation)
    {
        if (result == MyGuiScreenMessageBox.ResultEnum.CANCEL)
            return;

        var consent = result == MyGuiScreenMessageBox.ResultEnum.YES;

        var consentWithdrawn = ConsentRequested && ConsentGiven && !consent;
        if (consentWithdrawn)
        {
            MyGuiSandbox.AddScreen(MyGuiSandbox.CreateMessageBox(MyMessageBoxStyleEnum.Info,
                                                                 MyMessageBoxButtonsType.YES_NO_CANCEL,
                                                                 new(
                                                                     "Are you sure to withdraw your consent to data handling?\r\n\r\nDoing so would irrecoverably remove all your votes\r\nand usage data from our statistics server."),
                                                                 new("Confirm consent withdrawal"),
                                                                 callback: res =>
                                                                     StoreConsent(res, false, continuation)));
            return;
        }

        StoreConsent(MyGuiScreenMessageBox.ResultEnum.YES, consent, continuation);
    }

    private static void StoreConsent(MyGuiScreenMessageBox.ResultEnum confirmationResult, bool consent,
                                     Action continuation)
    {
        if (confirmationResult != MyGuiScreenMessageBox.ResultEnum.YES)
            return;

        if (ConsentRequested && consent == ConsentGiven)
        {
            continuation?.Invoke();
            return;
        }

        if (!StatsClient.Consent(consent))
        {
            LogFile.Log.Debug("Failed to register player consent on statistics server");
            return;
        }

        var config = Main.Instance.Config;
        config.DataHandlingConsentDate = Tools.Tools.FormatDateIso8601(DateTime.Today);
        config.DataHandlingConsent = consent;
        config.Save();

        if (consent)
            StatsClient.Track(Main.Instance.TrackablePluginIds);

        OnConsentChanged?.Invoke();

        continuation?.Invoke();
    }
}