public Task <string> RequiredCode(string channel, string type)
{
var provider = GetSecurityCodeProvider(type);
var record = GetCurrentCode(channel, type);
if (record == null)
{
//不存在，生成
record = new SecurityCodeRecord();
record.Channel = channel;
record.Code = GenerateCodeHelper.GetRandomDigital(provider.GetLenth());
record.CodeType = type;
record.CreateOn = DateTime.Now;
record.ExpireTime = provider.GetExpireTime();
record.ServiceProvider = _smsChannel.GetSMSProvider();
record.IsValid = false;
_repository.CreateRecord(record);
_repository.Flush();
}
else
{
//存在，更新过期时间
record.ExpireTime = provider.GetExpireTime();
_repository.UpdateRecord(record);
_repository.Flush();
}
return(Task.FromResult(record.Code));
}
