public async Task <Order> AddAsync(Order order)
{
if (order.BorrowDate.Date < DateTime.Today)
{
throw new ApiException(MessagesResource.INVALID_INPUT);
}
order.IsBorrowed = false;
IEnumerable <Order> ordersInDb = await _orderRepo.GetAllSimilarOrdersAsync(order);
if (ordersInDb.Any(o => o.IsBorrowed || o.BorrowDate.Date >= DateTime.Today))
{
throw new ApiException(MessagesResource.BOOK_ALREADY_ORDERED);
}
List <Order> ordersToDelete = ordersInDb
.Where(o => !o.IsBorrowed && o.BorrowDate.Date < DateTime.Today && o.ReturnDate == null)
.ToList();
if (ordersToDelete.Any())
{
await _orderRepo.DeleteManyAsync(ordersToDelete);
await _bookService.ToggleAvailability(ordersToDelete.FirstOrDefault().BookId);
}
return(await _orderRepo.AddAsync(order));
}