/// <summary>
/// Gets an identity by its unique user-chosen identifier.
/// </summary>
/// <param name="identifier">The identifier of the identity to retrieve.</param>
/// <returns>Returns the identity, if found.</returns>
/// <exception cref="EntityNotFoundException">Thrown if the identity could not be found.</exception>
public async Task <Identity> GetIdentity(string identifier)
{
Identity identity = await IdentityRepository.GetIdentity(identifier);
if (identity == null)
{
throw new EntityNotFoundException("Identity", identifier);
}
return(identity);
}
/// <summary>
/// Creates a new identity.
/// </summary>
/// <param name="identifier">The unique user-chosen identifier with this identity.</param>
/// <param name="password">The as-of-yet unhashed password of this identity.</param>
/// <returns></returns>
/// <exception cref="EntityAlreadyExsistsException">Identity</exception>
public async Task <Identity> CreateIdentity(string identifier, string password)
{
// Validate identifier format and availability
IdentifierValidationService.Validate(identifier);
if ((await IdentityRepository.GetIdentity(identifier)) != null)
{
throw new EntityAlreadyExsistsException("Identity", identifier);
}
// Validate client-provided password
PasswordValidationService.Validate(password);
// Hash password and create new identity
(string hash, byte[] salt) = PasswordHashingService.HashAndSaltPassword(password);
return(await IdentityRepository.CreateIdentity(identifier, hash, salt));
}