public async Task<Book> AddAsync(Book item)
{
Author existingAuthor = await _dbContext.Authors.FirstOrDefaultAsync(r =>
r.FirstName.ToUpper() == item.Author.FirstName.ToUpper() &&
r.LastName.ToUpper() == item.Author.LastName.ToUpper());
Category category = await _dbContext.Categories.FirstOrDefaultAsync(r =>
r.CategoryName.ToUpper() == item.Category.CategoryName.ToUpper());
if (existingAuthor != null && category != null)
{
item.Author = existingAuthor;
item.Category = category;
_dbContext.Books.Add(item);
_dbContext.SaveChanges();
return item;
}
Author newAuthor = new Author()
{
FirstName = item.Author.FirstName,
LastName = item.Author.LastName
};
Category newCategory = new Category()
{
CategoryName = item.Category.CategoryName,
CategoryDescription = item.Category.CategoryDescription,
};
item.Author = newAuthor;
item.Category = newCategory;
_dbContext.Books.Add(item);
await _dbContext.SaveChangesAsync();
return item;
}
public async Task<Author> UpdateAsync(Author item)
{
var updateAuthor = await _dbContext.Authors.SingleOrDefaultAsync(r => r.AuthorId == item.AuthorId);
if (updateAuthor != null)
{
updateAuthor.FirstName = item.FirstName;
updateAuthor.LastName = item.LastName;
await _dbContext.SaveChangesAsync();
return updateAuthor;
}
return null;
}
public async Task<Author> AddAsync(Author item)
{
Author existingAuthor = await _dbContext.Authors.SingleOrDefaultAsync(r =>
r.FirstName.ToUpper() == item.FirstName.ToUpper() &&
r.LastName.ToUpper() == item.LastName.ToUpper());
if (existingAuthor != null)
{
return null;
}
Author newAuthor = new Author()
{
FirstName = item.FirstName,
LastName = item.LastName
};
_dbContext.Authors.Add(newAuthor);
await _dbContext.SaveChangesAsync();
return item;
}
