public async Task<JsonNetResult> RegisterUser(RegisterUserViewModel model)
{
if (ModelState.IsValid == false)
return JsonFailure();
// Generate a user Id and try to register the user account (map from view model first)
Guid userId = Guid.NewGuid();
var createUser = new CreateUser
{
EmailAddress = model.EmailAddress,
FirstName = model.FirstName,
LastName = model.LastName,
Password = model.Password,
UserId = userId
};
// TODO: Validation to try and minimize chance of duplicate users
// if (await _userWriteModel.CreateUser(createUser) == false)
// {
// ModelState.AddModelError(string.Empty, "A user with that email address already exists.");
// return JsonFailure();
//}
await _userManagement.CreateUser(createUser);
// Assume creation successful so sign the user in
SignTheUserIn(userId);
// Return success
return JsonSuccess(new UserRegisteredViewModel {UserId = userId});
}
/// <summary>
/// Creates a new user account.
/// </summary>
public async Task CreateUser(CreateUser user)
{
// Hash the user's password
string hashedPassword = PasswordHash.CreateHash(user.Password);
// TODO: Use LINQ to create users
DateTimeOffset timestamp = DateTimeOffset.UtcNow;
PreparedStatement preparedCredentials = await _statementCache.NoContext.GetOrAddAsync(
"INSERT INTO user_credentials (email, password, userid) VALUES (?, ?, ?) IF NOT EXISTS");
// Insert the credentials info (this will return false if a user with that email address already exists)
IStatement insertCredentialsStatement = preparedCredentials.Bind(user.EmailAddress, hashedPassword, user.UserId);
RowSet credentialsResult = await _session.ExecuteAsync(insertCredentialsStatement).ConfigureAwait(false);
// The first column in the row returned will be a boolean indicating whether the change was applied (TODO: Compensating action for user creation failure?)
var applied = credentialsResult.Single().GetValue<bool>("[applied]");
if (applied == false)
return;
PreparedStatement preparedUser = await _statementCache.NoContext.GetOrAddAsync(
"INSERT INTO users (userid, firstname, lastname, email, created_date) VALUES (?, ?, ?, ?, ?) USING TIMESTAMP ?");
// Insert the "profile" information using a parameterized CQL statement
IStatement insertUserStatement =
preparedUser.Bind(user.UserId, user.FirstName, user.LastName, user.EmailAddress, timestamp, timestamp.ToMicrosecondsSinceEpoch());
await _session.ExecuteAsync(insertUserStatement).ConfigureAwait(false);
// Tell the world about the new user
await _bus.Publish(new UserCreated
{
UserId = user.UserId,
FirstName = user.FirstName,
LastName = user.LastName,
EmailAddress = user.EmailAddress,
Timestamp = timestamp
}).ConfigureAwait(false);
}
