public IActionResult Details(LeaveRequestViewModel model)
        {
            var request = _mapper.Map <LeaveRequest>(model);

            request.RequestingEmployee = _employeeRepository.FindById(Guid.Parse(model.RequestingEmployeeId));
            request.ApprovedBy         = _employeeRepository.FindById(Guid.Parse(_userManager.GetUserAsync(User).Result.Id));
            request.LeaveType          = _leaveTypeRepository.FindById(model.LeaveTypeId);
            if (request.Approved == true)
            {
                var allocation = _leaveAllocationRepository.GetLeaveAllocationByEmployeeAndLeaveType(request.RequestingEmployee.Id, request.LeaveType.Id);
                allocation.NumberOfDays -= (int)(request.EndDate - request.StartDate).TotalDays;

                _leaveAllocationRepository.Update(allocation);
            }

            _leaveRequestRepository.Update(request);


            return(RedirectToAction("Index"));
        }