public IActionResult Create()
        {
            if (User.IsInRole("user"))
            {
                var user = (from account in _context.UserAccount
                            where account.Email.Equals(User.Identity.Name)
                            select account).FirstOrDefault();

                //Delete the existing reports
                var reports = (from rep in _context.MontlyExpenseReport

                               where rep.UserAccountId == user.Id
                               select rep
                               ).ToList();

                _context.RemoveRange(reports);

                _context.SaveChanges();


                //Group by monthly


                var groupedMonthly = (from expenses in _context.ExpenseRecord
                                      where expenses.UserAccountId == user.Id
                                      group expenses by new { expenses.Date.Year, expenses.Date.Month } into monthly

                                      select new MontlyExpenseReport {
                    Year = monthly.Key.Year, Month = monthly.Key.Month, TotalExpenses = monthly.Sum(e => e.Amount), UserAccountId = user.Id
                }).ToList();

                _context.AddRange(groupedMonthly);

                _context.SaveChanges();

                return(RedirectToAction(nameof(Index)));
            }

            return(View());
        }
        public async Task <IActionResult> OnPostAsync(string returnUrl = null)
        {
            returnUrl      = returnUrl ?? Url.Content("~/");
            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
            if (ModelState.IsValid)
            {
                var user = new IdentityUser {
                    UserName = Input.Email, Email = Input.Email
                };
                var result = await _userManager.CreateAsync(user, Input.Password);

                if (result.Succeeded)
                {
                    var userAccount = new UserAccount
                    {
                        Email = user.Email,
                        Name  = Input.Name,
                    };

                    dataContext.Add(userAccount);

                    dataContext.SaveChanges();
                    var roleExistsResult = await _roleManager.RoleExistsAsync("user");

                    if (!roleExistsResult)
                    {
                        var roleReuslt = await _roleManager.CreateAsync(new IdentityRole("user"));

                        if (roleReuslt.Succeeded)
                        {
                            await _userManager.AddToRoleAsync(user, "user");
                        }
                    }
                    else
                    {
                        await _userManager.AddToRoleAsync(user, "user");
                    }



                    _logger.LogInformation("User created a new account with password.");

                    var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);

                    code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
                    var callbackUrl = Url.Page(
                        "/Account/ConfirmEmail",
                        pageHandler: null,
                        values: new { area = "Identity", userId = user.Id, code = code },
                        protocol: Request.Scheme);

                    await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
                                                      $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");

                    if (_userManager.Options.SignIn.RequireConfirmedAccount)
                    {
                        return(RedirectToPage("RegisterConfirmation", new { email = Input.Email }));
                    }
                    else
                    {
                        await _signInManager.SignInAsync(user, isPersistent : false);

                        return(LocalRedirect(returnUrl));
                    }
                }
                foreach (var error in result.Errors)
                {
                    ModelState.AddModelError(string.Empty, error.Description);
                }
            }

            // If we got this far, something failed, redisplay form
            return(Page());
        }