public async Task <bool> DeleteBook(int id)
{
var book = await _context.Books.FindAsync(id);
_context.Books.Remove(book);
return(await _context.SaveChangesAsync() > 0);
}
public async Task <BookCategoryModel> Add(BookCategoryModel category)
{
category.Name = category.Name.ToUpper();
BookCategoryModel categorySameName = await GetByName(category.Name);
if (categorySameName != null)
{
return(categorySameName);
}
_context.Add(category);
await _context.SaveChangesAsync();
return(category);
}
public async Task <AuthorModel> Add(AuthorModel author)
{
AuthorModel authorSameName = await GetByName(author.Name);
if (authorSameName != null)
{
return(authorSameName);
}
author.Name = author.Name.ToUpper();
_context.Add(author);
await _context.SaveChangesAsync();
return(author);
}
public async Task <PublisherModel> Add(PublisherModel publisher)
{
PublisherModel publisherSameName = await GetByName(publisher.Name);
if (publisherSameName != null)
{
return(publisherSameName);
}
publisher.Name = publisher.Name.ToUpper();
_context.Add(publisher);
await _context.SaveChangesAsync();
return(publisher);
}
public async Task <BookModel> Add(BookModel book)
{
if (book == null)
{
return(null);
}
if (book.Id > 0)
{
return(book);
}
try
{
if (book.Categories != null)
{
foreach (BookCategoryModel category in book.Categories)
{
await _category.Add(category);
}
}
if (book.Authors != null)
{
foreach (AuthorModel author in book.Authors)
{
await _author.Add(author);
}
}
if (book.Publisher != null)
{
await _publisher.Add(book.Publisher);
}
_context.Add(book);
await _context.SaveChangesAsync();
return(book);
}
catch (Exception ex)
{
string message = ex.Message;
return(null);
}
}
public async Task <BookListModel> Add(BookListModel bookList)
{
if (bookList.User == null)
{
bookList.User = AppEnvironment.CurrentUser;
}
bookList.Order = (await GetAllRaw()).Count;
_context.Add(bookList);
await _context.SaveChangesAsync();
return(bookList);
}