WIP: implemented registration and EULA accept, WIP on auth issue

JOBot.TClient/Statements/PrepareUserState.cs

@@ -0,0 +1,44 @@
+using JOBot.TClient.Services;
+using Telegram.Bot.Types;
+using User = JOBot.Proto.User;
+
+namespace JOBot.TClient.Statements;
+
+public class PrepareUserState(PrepareUserService prepareUserService, MenuService menuService)
+{
+    /// <summary>
+    /// Try to prepare user if is not registered
+    /// </summary>
+    /// <param name="update">Update telegram object</param>
+    /// <param name="ct">Cancellation token</param>
+    public async Task TryToPrepareUser(Update update, CancellationToken ct = default)
+    {
+        var user = await prepareUserService.GetUser(update, ct);
+        if (user == null)
+            user = await prepareUserService.RegisterUser(update, ct);
+        
+        if (!user.Eula)
+        {
+            await prepareUserService.AskForEulaAgreement(update, ct);
+            return; //interrupt while eula isn't accepted
+        }
+        
+        await OnUserEulaValidStage(update, ct);
+    }
+
+    /// <summary>
+    /// Signal for accepted eula
+    /// </summary>
+    /// <param name="update"></param>
+    /// <param name="ct"></param>
+    public async Task UserAcceptedEula(Update update, CancellationToken ct = default)
+    {
+        await prepareUserService.AcceptEula(update, ct: ct);
+        await OnUserEulaValidStage(update, ct);
+    }
+    
+    private async Task OnUserEulaValidStage(Update update, CancellationToken ct = default)
+    {
+        await menuService.RenderMenu(update, ct); //boilerplate
+    }
+}