public async Task<Tag> UpdateTag(Tag tag)
{
if (tag == null) throw new PiggyBankDataException("Tag object is missing");
Tag tagToUpdate = await FindTag(tag.Id);
PiggyBankUtility.CheckMandatory(tag);
PiggyBankUtility.UpdateModel(tagToUpdate, tag);
await _dbContext.SaveChangesAsync();
return tagToUpdate;
}
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 AddTag(int transactionId, Tag tag)
{
Transaction transaction = await FindTransaction(transactionId);
if (tag == null) throw new PiggyBankDataException("Tag object is missing");
TagManager tagManager = new TagManager(_dbContext);
Tag tagToAdd = await tagManager.FindTag(tag.Id);
transaction.Tags.Add(tagToAdd);
await _dbContext.SaveChangesAsync();
}
