public async Task<Book> CreateBook(Book book)
{
if (book == null) throw new PiggyBankDataException("Book object is missing");
PiggyBankUtility.CheckMandatory(book);
_dbContext.Books.Add(book);
await _dbContext.SaveChangesAsync();
return book;
}
public async Task<Account> CreateAccount(Book book, Account account)
{
if (book == null) throw new PiggyBankDataException("Book object is missing");
if (account == null) throw new PiggyBankDataException("Account object is missing");
account.Book = book;
PiggyBankUtility.CheckMandatory(account);
_dbContext.Accounts.Add(account);
await _dbContext.SaveChangesAsync();
return account;
}
public async Task<Book> UpdateBook(Book book)
{
if (book == null) throw new PiggyBankDataException("Book object is missing");
Book bookToUpdate = await FindBook(book.Id);
if (!bookToUpdate.IsValid) throw new PiggyBankDataNotFoundException("Book [" + book.Id + "] cannot be found");
PiggyBankUtility.CheckMandatory(book);
PiggyBankUtility.UpdateModel(bookToUpdate, book);
await _dbContext.SaveChangesAsync();
return bookToUpdate;
}
public async Task<Tag> CreateTag(Book book, Tag tag)
{
if (book == null) throw new PiggyBankDataException("Book object is missing");
if (tag == null) throw new PiggyBankDataException("Tag object is missing");
tag.Book = book;
PiggyBankUtility.CheckMandatory(tag);
_dbContext.Tags.Add(tag);
await _dbContext.SaveChangesAsync();
return tag;
}
public async Task<Transaction> CreateTransaction(Book book, Transaction transaction)
{
DateTime timeStamp = DateTime.Now;
if (book == null) throw new PiggyBankDataException("Book object is missing");
if (transaction == null) throw new PiggyBankDataException("Transaction object is missing");
transaction.Book = book;
AccountManager acc = new AccountManager(_dbContext);
transaction.DebitAccount = await acc.FindAccount(transaction.DebitAccount.Id);
transaction.CreditAccount = await acc.FindAccount(transaction.CreditAccount.Id);
ValidateTransaction(transaction);
transaction.TimeStamp = timeStamp;
PiggyBankUtility.CheckMandatory(transaction);
_dbContext.Transactions.Add(transaction);
await _dbContext.SaveChangesAsync();
return transaction;
}
public async Task<IEnumerable<Account>> ListAccounts(Book book)
{
return await ListAccounts(b => b.Book.Id == book.Id);
}