private async Task ValidateUniqueness(string title, int?bookId)
{
var duplicate = await _repository.GetByTitleAsync(title);
if (duplicate != null && duplicate.Id != bookId)
{
ThrowHttp.Conflict(ErrorMessage.BOOK_EXISTS);
}
}
private async Task ValidateUniqueness(string firstName, string lastName, int?authorId)
{
var duplicate = await _repository.GetByNameAsync(firstName, lastName);
if (duplicate != null && duplicate.Id != authorId)
{
ThrowHttp.Conflict(ErrorMessage.AUTHOR_EXISTS);
}
}
public async Task DeleteAuthorAsync(int id)
{
var author = await GetByIdAsync(id);
var hasBooks = await _repository.AuthorHasBooksAsync(id);
if (hasBooks)
{
ThrowHttp.Conflict(ErrorMessage.AUTHOR_HAS_BOOKS);
}
await _repository.RemoveAsync(author);
}
public async Task CreateUserAsync(UserProxy user)
{
ValidateUser(user);
var existing = await _repository.GetByEmailAsync(user.Email);
if (existing != null)
{
ThrowHttp.Conflict(ErrorMessage.EMAIL_EXISTS);
}
var entity = MapToEntity(user);
await _repository.AddAsync(entity);
}