private void GetAuthorRecommendations()
{
List <Guid> authorIds = new List <Guid>();
var allBookAuthors = _bookAuthorService.AsQueryable().ToList();
List <Author> authors = new List <Author>();
List <GroupingByAuthor> groupingByAuthors = new List <GroupingByAuthor>();
foreach (var bookId in _bookIds)
{
var bookAuthorId = allBookAuthors.Where(x => x.BookId == bookId).First().AuthorId;
var author = _authorService.AsQueryable().Where(x => x.Id == bookAuthorId).FirstOrDefault();
if (!authors.Contains(author))
{
authors.Add(author);
groupingByAuthors.Add(
new GroupingByAuthor
{
Id = author.Id,
AuthorName = author.FirstName + " " + author.LastName,
NumOfBooks = 1
});
}
else
{
groupingByAuthors.Where(x => x.Id == author.Id).FirstOrDefault().NumOfBooks++;
}
}
var mostReadOrViewedAuthorId = groupingByAuthors.OrderByDescending(x => x.NumOfBooks).First().Id;
var booksFromFavAuthor = _bookAuthorService
.AsQueryable()
.Include(x => x.Book)
.Where(x => x.AuthorId == mostReadOrViewedAuthorId)
.ToList();
foreach (var book in booksFromFavAuthor)
{
_booksFromFavAuthorUserHasNotYetRead.Add(book.Book);
}
foreach (var bookUserRead in _booksUserRead)
{
if (_booksFromFavAuthorUserHasNotYetRead.Contains(bookUserRead.Book))
{
_booksFromFavAuthorUserHasNotYetRead.Remove(bookUserRead.Book);
}
}
}
public ActionResult RandomlyGenerateBookAuthors()
{
var authors = _authorService.AsQueryable().ToList();
var books = _bookService.AsQueryable().ToList();
Random rnd = new Random();
for (int i = 0; i < books.Count; i++)
{
BookAuthor bookAuthor = new BookAuthor
{
AuthorId = authors[rnd.Next(0, authors.Count - 1)].Id,
BookId = books[i].Id
};
_bookAuthorService.AddBookAuthor(bookAuthor);
}
return(Ok());
}
public ActionResult <Author> Get(Guid id)
{
var item = _authorService.AsQueryable()
.Where(x => x.Id == id)
.FirstOrDefault();
if (item is null)
{
return(NoContent());
}
return(Ok(item));
}
private BookDto MapToBookDto(Book book)
{
var x = book.Id.ToString().ToUpper();
Guid id = new Guid(book.Id.ToString().ToUpper());
var bookAuthors = _bookAuthorService
.AsQueryable()
.Where(x => x.BookId == id)
.ToList();
List <AuthorDto> authors = new List <AuthorDto>();
foreach (var item in bookAuthors)
{
var author = _authorService
.AsQueryable()
.Where(x => x.Id == item.AuthorId)
.FirstOrDefault();
authors.Add(MapToAuthorDto(author));
}
var bookDto = new BookDto
{
Id = book.Id,
ISBN = book.ISBN,
Cover = book.Cover,
Genre = book.Genre.Name,
NumberOfPages = book.NumberOfPages,
PublishDate = book.PublishDate,
Publisher = book.Publisher.Name,
Title = book.Title,
Authors = authors
};
return(bookDto);
}
