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using System;
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using System.Net;
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using FluentValidation.Results;
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using NLog;
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using NzbDrone.Common.Extensions;
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using NzbDrone.Common.Serializer;
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using RestSharp;
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using NzbDrone.Core.Rest;
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namespace NzbDrone.Core.Notifications.Telegram
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{
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public interface ITelegramProxy
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{
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void SendNotification(string title, string message, TelegramSettings settings);
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ValidationFailure Test(TelegramSettings settings);
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}
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public class TelegramProxy : ITelegramProxy
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{
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private readonly Logger _logger;
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private const string URL = "https://api.telegram.org";
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public TelegramProxy(Logger logger)
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{
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_logger = logger;
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}
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public void SendNotification(string title, string message, TelegramSettings settings)
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{
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//Format text to add the title before and bold using markdown
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var text = $"*{title}*\n{message}";
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var client = RestClientFactory.BuildClient(URL);
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var request = new RestRequest("bot{token}/sendmessage", Method.POST);
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request.AddUrlSegment("token", settings.BotToken);
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request.AddParameter("chat_id", settings.ChatId);
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request.AddParameter("parse_mode", "Markdown");
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request.AddParameter("text", text);
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client.ExecuteAndValidate(request);
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}
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public ValidationFailure Test(TelegramSettings settings)
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{
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try
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{
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const string title = "Test Notification";
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const string body = "This is a test message from Sonarr";
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SendNotification(title, body, settings);
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}
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catch (Exception ex)
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{
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_logger.Error(ex, "Unable to send test message: " + ex.Message);
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var restException = ex as RestException;
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if (restException != null && restException.Response.StatusCode == HttpStatusCode.BadRequest)
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{
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var error = Json.Deserialize<TelegramError>(restException.Response.Content);
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var property = error.Description.ContainsIgnoreCase("chat not found") ? "ChatId" : "BotToken";
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return new ValidationFailure(property, error.Description);
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}
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return new ValidationFailure("BotToken", "Unable to send test message");
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}
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return null;
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}
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}
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}
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