/// <summary>
/// Inserts a new user record in the database.
/// </summary>
/// <param name="registrationReference">The Azure Mobile Service user id.</param>
/// <returns>Updated user object.</returns>
public async Task<UserContract> CreateUser(string registrationReference)
{
//Create the new user document with default values and starting gold balance.
var userDocument = new UserDocument
{
GoldBalance = 0,
RegistrationReference = registrationReference,
CreatedAt = new DateDocument
{
Date = DateTime.UtcNow
},
ModifiedAt = new DateDocument
{
Date = DateTime.UtcNow
},
GoldGiven = 0
};
var createdUserId =
(await _documentClient.CreateDocumentAsync(DocumentCollectionUri, userDocument)).Resource.Id;
// Handle gold balance changes and create transaction record
await ExecuteGoldTransactionSproc(createdUserId, SystemUserId, _newUserGoldBalance,
GoldTransactionType.WelcomeGoldTransaction);
userDocument.Id = createdUserId;
userDocument.GoldBalance = _newUserGoldBalance;
return userDocument.ToContract();
}
private async Task<UserDocument> ReplaceUserDocument(UserDocument userDocument)
{
var existingUser = GetUserDocumentByRegistrationReference(userDocument.RegistrationReference);
// First time profile pic update awards user some gold (value found in environment definitions)
var firstTimeProfileGoldAward = (existingUser.ProfilePhotoId == null && userDocument.ProfilePhotoId != null);
// Persist the user's GoldGiven value since it is not currently present in userContracts
if (userDocument.GoldGiven == 0 && existingUser.GoldGiven != 0)
{
userDocument.GoldGiven = existingUser.GoldGiven;
}
try
{
userDocument.ModifiedAt = new DateDocument
{
Date = DateTime.UtcNow
};
var response = await _documentClient.ReplaceDocumentAsync(
UriFactory.CreateDocumentUri(
_documentDataBaseId,
_documentCollectionId,
userDocument.Id),
userDocument);
if (response.StatusCode != HttpStatusCode.OK)
{
throw new DataLayerException(DataLayerError.Unknown, response.StatusCode.ToString());
}
}
catch (DocumentClientException ex)
{
throw new DataLayerException(DataLayerError.NotFound, ex.Message, ex);
}
if (firstTimeProfileGoldAward)
{
// Handle gold balance changes and create transaction record
await ExecuteGoldTransactionSproc(userDocument.Id, SystemUserId, _firstProfilePhotoUpdateGoldIncrement,
GoldTransactionType.FirstProfilePicUpdateTransaction);
}
return userDocument;
}
