public void EnqueueMessage(TelegramOutboundMessage message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
_pendingMessages.Add(message);
}
private StringContent ConvertOutboundMessageToJsonMessage(TelegramOutboundMessage message)
{
var json = new JsonObject();
json.SetNamedNumber("chat_id", message.ChatId);
json.SetNamedString("parse_mode", "HTML");
json.SetNamedString("text", message.Text);
return(new StringContent(json.Stringify(), Encoding.UTF8, "application/json"));
}
public void EnqueueMessage(TelegramOutboundMessage message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (!Settings.IsEnabled)
{
return;
}
_pendingMessages.Add(message);
}
private async Task ProcessPendingMessagesAsync()
{
while (true)
{
try
{
TelegramOutboundMessage message = _pendingMessages.Take();
await SendMessageAsync(message);
}
catch (Exception exception)
{
Log.Error(exception, "Error while processing pending Telegram messages.");
}
}
}
private StringContent ConvertOutboundMessageToJsonMessage(TelegramOutboundMessage message)
{
if (message.Text.Length > 4096)
{
throw new InvalidOperationException("The Telegram outbound message is too long.");
}
var json = new JsonObject();
json.SetNamedNumber("chat_id", message.ChatId);
json.SetNamedString("text", message.Text);
if (message.Format == TelegramMessageFormat.HTML)
{
json.SetNamedString("parse_mode", "HTML");
}
return(new StringContent(json.Stringify(), Encoding.UTF8, "application/json"));
}
public async Task <bool> TrySendMessageAsync(TelegramOutboundMessage message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
try
{
await SendMessageAsync(message);
return(true);
}
catch (Exception exception)
{
Log.Warning(exception, "Error while sending Telegram message.");
return(false);
}
}
private StringContent ConvertOutboundMessageToJsonMessage(TelegramOutboundMessage message)
{
if (message.Text.Length > 4096)
{
throw new InvalidOperationException("The Telegram outbound message is too long.");
}
var json = new JObject
{
["chat_id"] = message.ChatId,
["text"] = message.Text
};
if (message.Format == TelegramMessageFormat.HTML)
{
json["parse_mode"] = "HTML";
}
return(new StringContent(json.ToString(), Encoding.UTF8, "application/json"));
}
public async Task SendMessageAsync(TelegramOutboundMessage message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
using (var httpClient = new HttpClient())
{
string uri = $"{BaseUri}{AuthenticationToken}/sendMessage";
StringContent body = ConvertOutboundMessageToJsonMessage(message);
HttpResponseMessage response = await httpClient.PostAsync(uri, body);
if (!response.IsSuccessStatusCode)
{
throw new InvalidOperationException($"Sending Telegram message failed (StatusCode={response.StatusCode}).");
}
Log.Info($"Sent Telegram message '{message.Text}' to chat {message.ChatId}.");
}
}
private async Task SendMessageAsync(TelegramOutboundMessage message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
using (var httpClient = new HttpClient())
{
var uri = $"{BaseUri}{Settings.AuthenticationToken}/sendMessage";
var body = ConvertOutboundMessageToJsonMessage(message);
var response = await httpClient.PostAsync(uri, body);
if (!response.IsSuccessStatusCode)
{
_log.Warning($"Sending Telegram message failed (Message='${message.Text}' StatusCode={response.StatusCode}).");
}
else
{
_log.Info($"Sent Telegram message '{message.Text}' to chat {message.ChatId}.");
}
}
}