🚧 RSS as a module

2026-07-31 00:29:24 +03:00 · 2020-03-02 00:00:52 +04:00
parent e86049f4fd
commit eac0da5016
16 changed files with 1185 additions and 0 deletions
@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Concurrent;
+using System.Text;
+using System.Threading.Tasks;
+using BotFramework;
+using Kruzya.TelegramBot.Core.Service;
+using Microsoft.Extensions.Logging;
+using Telegram.Bot.Exceptions;
+using Telegram.Bot.Types;
+
+namespace Kruzya.TelegramBot.RichSiteSummary.Service
+{
+    public class MessageSender : AbstractTimedHostedService
+    {
+        protected override TimeSpan TimerPeriod => TimeSpan.FromSeconds(1);
+        
+        protected readonly ConcurrentQueue<UserMessage> _queue;
+        protected readonly ConcurrentQueue<UserUnsubscribe> _unsubscribeQueue;
+        
+        public MessageSender(ILogger<MessageSender> logger, ITelegramBot bot, ConcurrentQueue<UserMessage> userMessageQueue, ConcurrentQueue<UserUnsubscribe> userUnsubscribeQueue) : base(logger, bot)
+        {
+            _unsubscribeQueue = userUnsubscribeQueue;
+            _queue = userMessageQueue;
+        }
+
+        protected override async Task OnRun()
+        {
+            if (_queue.Count == 0)
+            {
+                return;
+            }
+
+            UserMessage message;
+            if (!_queue.TryDequeue(out message))
+            {
+                return;
+            }
+
+            try
+            {
+                await _bot.BotClient.SendTextMessageAsync(message.ChatId, message.Text, message.ParseMode,
+                    message.DisableWebPagePreview);
+            }
+            catch (ApiRequestException e)
+            {
+                if (!e.Message.Contains("bot was blocked by user"))
+                {
+                    ReEnqueue(message, e, message.ChatId); // looks like a network issue
+                    return;
+                }
+
+                // User added bot to blacklist.
+                // Unsubscribe him.
+                _unsubscribeQueue.Enqueue(new UserUnsubscribe()
+                {
+                    ChatId = message.ChatId
+                });
+            }
+            catch (Exception e)
+            {
+                ReEnqueue(message, e);
+            }
+        }
+        
+        private void ReEnqueue(UserMessage message, Exception e = null, ChatId chatId = null)
+        {
+            if (e != null)
+            {
+                var eMessage = new StringBuilder();
+                eMessage.Append(e.Message);
+                if (chatId != null)
+                {
+                    eMessage.Append($" ({chatId.Identifier})");
+                }
+
+                _logger.LogError(eMessage.ToString());
+            }
+
+            _queue.Enqueue(message);
+        }
+    }
+}