public async Task HandleAsync(RegisterFcmDeviceCommand message, CancellationToken cancellationToken)
{
if (!userContext.IsAuthenticated)
{
throw new InvalidOperationException("Cannot register FCM device for an unauthenticated user");
}
string normalizedDeviceToken = message.RegistrationId;
FcmUserDeviceToken token = await repository.FirstOrDefaultAsync <FcmUserDeviceToken>(
x => x.RegistrationId == normalizedDeviceToken &&
x.AppId == message.AppId);
if (token != null)
{
if (token.UserId == userContext.UserId)
{
return;
}
repository.Remove(token);
}
// TODO restrict AppIds (a configurable list?)
token = new FcmUserDeviceToken(Guid.NewGuid(), await userContext.GetUserAsync(),
normalizedDeviceToken, message.AppId);
repository.Add(token);
Logger.Debug($"Added external FCM user device registaration for user ID {userContext.UserId}");
}
public async Task HandleAsync(DeregisterFcmDeviceCommand message, CancellationToken cancellationToken)
{
string normalizedDeviceToken = message.RegistrationId;
FcmUserDeviceToken token = await repository.FirstOrDefaultAsync <FcmUserDeviceToken>(
x => x.RegistrationId == normalizedDeviceToken &&
x.AppId == message.AppId);
if (token != null)
{
repository.Remove(token);
}
}
