protected override async Task Handle(DeleteSharedListItem command)
{
var item = await WriteService.GetAsync <SharedBookListItem>(command.ItemId);
if (item == null)
{
throw new ObjectNotExistException <SharedBookListItem>(
new OnExceptionObjectDescriptor
{
["Id"] = command.ItemId.ToString()
});
}
var accessSpecification = new BookListAccessSpecification(item.BookList);
if (!accessSpecification.SatisfiedBy(command.UserId))
{
throw new AccessDeniedException <BookList>(new OnExceptionObjectDescriptor
{
["Id"] = item.BookListId.ToString()
});
}
await WriteService.DeleteAsync <SharedBookListItem>(item.Id);
}
protected override async Task <int> GetBookListId(AddSharedListItem command)
{
var list = await WriteService.GetAsync <BookList>(command.ListId);
if (list == null)
{
throw new ObjectNotExistException <BookList>(
new OnExceptionObjectDescriptor
{
["Id"] = command.ListId.ToString()
});
}
var accessSpecification = new BookListAccessSpecification(list);
if (!accessSpecification.SatisfiedBy(command.UserId))
{
throw new AccessDeniedException <BookList>(new OnExceptionObjectDescriptor
{
["Id"] = command.ListId.ToString()
});
}
return(command.ListId);
}
private static void Validate(BookList list, int userId, IEnumerable <BookListItem> items, int bookId)
{
var accessSpecification = new BookListAccessSpecification(list);
if (!accessSpecification.SatisfiedBy(userId))
{
throw new AccessDeniedException <BookList>(new OnExceptionObjectDescriptor
{
["Id"] = list.Id.ToString()
});
}
if (items.Any(i => i.BookId == bookId && i.BookListId == list.Id))
{
throw new ObjectAlreadyExistsException <BookListItem>(new OnExceptionObjectDescriptor
{
["Id"] = bookId.ToString()
});
}
}