public ActionResult Update([ModelBinder(typeof(UpdateModelBinder))] WebhookUpdateDto webhookUpdateDto)
{
Logger.LogInformation("Telegram hit webhook BotInstanceId: {BotInstanceId} Secret: {Secret} UpdateType: {UpdateType} MessageType: {MessageType}.",
webhookUpdateDto.BotInstanceId, webhookUpdateDto.Secret, webhookUpdateDto.Update.Type, webhookUpdateDto.Update.Message?.Type);
var botInstanceRecord = Db.BotInstanceRecords.SingleOrDefault(x => x.Id == webhookUpdateDto.BotInstanceId && x.WebhookSecret == webhookUpdateDto.Secret);
if (botInstanceRecord == null)
{
ModelState.AddModelError("", "BotUniqueName or Secret is invalid.");
return(BadRequest(ModelState));
}
HttpContextAccessor.HttpContext.Items.Add("BotClientToken", botInstanceRecord.Token);
HttpContextAccessor.HttpContext.Items.Add("BotInstanceId", webhookUpdateDto.BotInstanceId);
using (var scope = IocConfig.Container.BeginLifetimeScope(MatchingScopeLifetimeTags.RequestLifetimeScopeTag))
{
var botInstance = GetBotInstance(botInstanceRecord, scope);
var subscriber = GetOrAddSubscriber(webhookUpdateDto, scope);
Dump(botInstance, webhookUpdateDto.Update);
botInstance.Update(webhookUpdateDto.Update, subscriber);
}
return(Ok());
}
private SubscriberRecord GetOrAddSubscriber(WebhookUpdateDto webhookUpdateDto, ILifetimeScope scope)
{
SubscriberRepo = scope.Resolve <SubscriberRepo>();
var message = webhookUpdateDto.Update.Message;
var subscriber = SubscriberRepo.GetByChatId(message.Chat.Id);
if (subscriber != null)
{
return(subscriber);
}
subscriber = new SubscriberRecord
{
ChatId = message.Chat.Id,
BotInstanceRecordId = webhookUpdateDto.BotInstanceId,
Username = message.Chat.Username,
FirstName = message.From.FirstName,
LastName = message.From.LastName
};
SubscriberRepo.Add(subscriber);
return(subscriber);
}
public Task BindModelAsync(ModelBindingContext bindingContext)
{
var request = bindingContext.HttpContext.Request;
if (!request.ContentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
//request.Body.Position = 0; // see: http://stackoverflow.com/a/3468653/331281
var stream = request.Body;
string json;
using (var readStream = new StreamReader(stream, Encoding.UTF8))
json = readStream.ReadToEnd();
var values = bindingContext.ActionContext.RouteData.Values;
var result = new WebhookUpdateDto
{
BotInstanceId = int.Parse(values[nameof(WebhookUpdateDto.BotInstanceId)].ToString()),
Secret = bindingContext.ActionContext.RouteData.Values[nameof(WebhookUpdateDto.Secret)].ToString(),
Update = JsonConvert.DeserializeObject <Update>(json)
};
bindingContext.Result = ModelBindingResult.Success(result);
return(Task.CompletedTask);
}
