public CrudResult InsertOrUpdateExistingBook(Book book)
{
var result = GetExistingBook(book.Id);
if (result.IsSuccess)
{
var removeResult = RemoveExistingBook(book);
if (removeResult.IsSuccess)
{
return(AddBook(book));
}
else
{
return(CrudResult.Error());
}
}
else if (result.IsNotFound)
{
return(AddBook(book));
}
else
{
return(CrudResult.Error());
}
}
private CrudResult <List <Book> > GetAllBooks()
{
var booksList = GetAllFromCache();
if (booksList == null)
{
return(CrudResult <List <Book> > .Error());
}
else
{
return(CrudResult <List <Book> > .Success(booksList));
}
}
public CrudResult RemoveExistingBook(string id)
{
var result = GetExistingBook(id);
if (result.IsSuccess)
{
return(RemoveBook(result.Value));
}
else if (result.IsNotFound)
{
return(CrudResult.NotFound());
}
else
{
return(CrudResult.Error());
}
}
public CrudResult RemoveExistingCar(string reference)
{
var dictionaryCars = GetAllExistingCar();
if (dictionaryCars.IsSuccess)
{
var succesfull = dictionaryCars.Value.Remove(reference);
if (succesfull)
{
return(UpdateCacheData(dictionaryCars.Value));
}
else
{
return(CrudResult.Error());
}
}
else
{
return(CrudResult.NotFound());
}
}
private CrudResult RemoveBook(Book book) => RemoveFromCache(book.Id, book) ? CrudResult.Success() : CrudResult.Error();
private CrudResult AddBook(Book book) => SetInCache(book.Id, book) ? CrudResult.Success() : CrudResult.Error();
private CrudResult UpdateCacheData(IDictionary <string, Car> carsDictionary) => SetOrUpdateInCache(DictionaryCarsKey, carsDictionary) ? CrudResult.Success() : CrudResult.Error();
