private void ModifyPublisher(Book book, SimpleBook sBook, LibraryDataBase db)
{
if (sBook.Publisher == book.Publisher.PublisherName)
{
return;
}
if (book.Publisher.PublisherName != "") // si no es un libro nuevo
{
book.Publisher.QuantityBooks--; // Le resto uno a la cant de libros del autor anterior
}
bool existingPublisher = false;
foreach (Publisher p in db.Publishers)
{
if (p.PublisherName == sBook.Publisher)
{
existingPublisher = true;
book.Publisher = p;
p.QuantityBooks++;
break;
}
}
if (!existingPublisher)
{
Publisher newPublisher = new Publisher(); //Creo el publisher nuevo
newPublisher.PublisherName = sBook.Publisher; //Le cambio el valor del Name
newPublisher.QuantityBooks = 1; // Le asigno 1 a la cant de libros del publisher actual
db.Publishers.Add(newPublisher); //Lo agrego a la tabla publishers
book.Publisher = newPublisher;
}
}
// GET: Biblioteca
public ActionResult ViewAll()
{
LibraryDataBase db = new LibraryDataBase();
List <Book> books = db.Books.OrderBy(book => book.Title).ToList();
return(View(books));
}
private void ModifyAuthor(Book book, SimpleBook sBook, LibraryDataBase db)
{
if (sBook.Author == book.Author.AuthorName)
{
return;
}
if (book.Author.AuthorName != "") // Si no es un libro nuevo
{
book.Author.QuantityBooks--; // Le resto uno a la cant de libros del autor anterior
}
bool existingAuthor = false;
foreach (Author a in db.Authors)
{
if (a.AuthorName == sBook.Author)
{
existingAuthor = true;
book.Author = a;
a.QuantityBooks++;
break;
}
}
if (!existingAuthor)
{
Author newAuthor = new Author(); //Creo el autor nuevo
newAuthor.AuthorName = sBook.Author; //Le cambio el Name
newAuthor.QuantityBooks = 1; //Le asigno la cant de libros del autor actual
db.Authors.Add(newAuthor); //Lo agrego a la tabla de Authors
book.Author = newAuthor;
}
}
public ActionResult Search()
{
LibraryDataBase db = new LibraryDataBase();
SimpleBook sBook = NewEmptySimpleBook(db);
return(View(sBook));
}
public ActionResult AddNew()
{
LibraryDataBase db = new LibraryDataBase();
SimpleBook sBook = NewEmptySimpleBook(db);
ViewBag.Description = "Agregar Nuevo";
return(View("Edit", sBook));
}
private SimpleBook NewEmptySimpleBook(LibraryDataBase db)
{
SimpleBook sBook = new SimpleBook();
sBook.Title = "";
sBook.Author = "";
sBook.GenreType = db.Genres.Find(db.Genres.Max(gen => gen.ID)).GenreType;
sBook.Publisher = "";
sBook.BookRef = null;
return(sBook);
}
private void ModifyGenre(Book book, SimpleBook sBook, LibraryDataBase db)
{
foreach (Genre g in db.Genres)
{
if (g.GenreType == sBook.GenreType)
{
book.ID_GenreType = g.ID;
break;
}
}
}
public ActionResult Delete(int id)
{
LibraryDataBase db = new LibraryDataBase();
Book book = db.Books.Find(id);
book.Author.QuantityBooks--;
book.Publisher.QuantityBooks--;
db.Books.Remove(book);
db.SaveChanges();
FreeUnusedMemory(db);
return(RedirectToAction("ViewAll"));
}
public ActionResult Search(SimpleBook sBook)
{
LibraryDataBase db = new LibraryDataBase();
List <Book> bookList = db.Books.ToList();
List <Book> filteredList = FilterByTitle(sBook, bookList);
filteredList = FilterByGenre(sBook, filteredList);
filteredList = FilterByPublisher(sBook, filteredList);
filteredList = FilterByAuthor(sBook, filteredList);
return(View("ViewAll", filteredList.OrderBy(book => book.Title)));
}
public ActionResult Edit(SimpleBook sBook)
{
LibraryDataBase db = new LibraryDataBase();
Book book = db.Books.Find(sBook.BookRef);
ModifyAuthor(book, sBook, db);
ModifyGenre(book, sBook, db);
ModifyPublisher(book, sBook, db);
ModifyTitle(book, sBook);
db.Entry(book).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();
FreeUnusedMemory(db);
return(RedirectToAction("ViewAll"));
}
public ActionResult Edit(int id)
{
LibraryDataBase db = new LibraryDataBase();
Book book = db.Books.Find(id);
SimpleBook sBook = new SimpleBook
{
Title = book.Title,
Author = book.Author.AuthorName,
GenreType = book.Genre.GenreType,
Publisher = book.Publisher.PublisherName,
BookRef = book.ID
};
ViewBag.Description = "Editar";
return(View(sBook));
}
private void FreeUnusedMemory(LibraryDataBase db)
{
foreach (Author a in db.Authors)
{
if (a.QuantityBooks == 0)
{
db.Authors.Remove(a);
}
}
foreach (Publisher p in db.Publishers)
{
if (p.QuantityBooks == 0)
{
db.Publishers.Remove(p);
}
}
db.SaveChanges();
}
public ActionResult AddNew(SimpleBook sBook)
{
LibraryDataBase db = new LibraryDataBase();
Book book = new Book();
book.Author = new Author {
AuthorName = ""
};
book.Publisher = new Publisher {
PublisherName = ""
};
ModifyAuthor(book, sBook, db);
ModifyGenre(book, sBook, db);
ModifyPublisher(book, sBook, db);
ModifyTitle(book, sBook);
db.Books.Add(book);
db.SaveChanges();
FreeUnusedMemory(db);
return(RedirectToAction("ViewAll"));
}
