Init

src/RgDevBot.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30320.27
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RgDevBot", "RgDevBot\RgDevBot.csproj", "{2BAF765F-8E7E-4544-87D5-483EA9FECCA7}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2BAF765F-8E7E-4544-87D5-483EA9FECCA7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2BAF765F-8E7E-4544-87D5-483EA9FECCA7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2BAF765F-8E7E-4544-87D5-483EA9FECCA7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2BAF765F-8E7E-4544-87D5-483EA9FECCA7}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9ACBCBC1-5D08-41F1-868C-F21CBF396874}
+	EndGlobalSection
+EndGlobal

src/RgDevBot/NewsParser.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Text.Json.Serialization;
+using Newtonsoft.Json;
+using RgDevBot.ObjectModel;
+
+namespace RgDevBot
+{
+    public class NewsParser
+    {
+        private readonly TelegramBot _bot;
+        private int _lastSentId = -1;
+
+        public NewsParser(TelegramBot bot)
+        {
+            _bot = bot;
+        }
+
+        public void Parse()
+        {
+            var url = "https://rg-dev.ru/api/news/?type=news";
+            var content = Get(url);
+
+            var news = JsonConvert.DeserializeObject<NewsListResponse>(content);
+            var latestNews = news.results.OrderByDescending(f => f.id).FirstOrDefault();
+
+            if (latestNews != null && latestNews.id != _lastSentId)
+            {
+                var text = $"{latestNews.title}:\r\nhttps://rg-dev.ru/press/news/all/{latestNews.id}/";
+                Console.WriteLine(text);
+                _bot.SendMessage(text);
+
+                _lastSentId = latestNews.id;
+            }
+        }
+
+
+
+        public string Get(string url, string contentType = "application/json")
+        {
+            var httpRequest = (HttpWebRequest)WebRequest.Create(url);
+            httpRequest.ContentType = contentType;
+            httpRequest.Method = "GET";
+
+            var httpResponse = (HttpWebResponse)httpRequest.GetResponse();
+            using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
+            {
+                var result = streamReader.ReadToEnd();
+                return result;
+            }
+        }
+    }
+}

src/RgDevBot/ObjectModel/News.cs

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+using System;
+
+namespace RgDevBot.ObjectModel
+{
+    public class News
+    {
+        public int id { get; set; }
+        public string title { get; set; }
+        public string slug { get; set; }
+        public string type { get; set; }
+        public string intro { get; set; }
+        public object image_display { get; set; }
+        public object mobile_image_display { get; set; }
+        public object image_preview { get; set; }
+        public object mobile_image_preview { get; set; }
+        public DateTime date { get; set; }
+    }
+}

src/RgDevBot/ObjectModel/NewsListResponse.cs

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+using System.Collections.Generic;
+using System.Text;
+
+namespace RgDevBot.ObjectModel
+{
+    // Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse); 
+
+    public class NewsListResponse
+    {
+        public int count { get; set; }
+        public string next { get; set; }
+        public object previous { get; set; }
+        public List<News> results { get; set; }
+    }
+
+}

src/RgDevBot/Program.cs

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+using System;
+using System.Threading;
+
+namespace RgDevBot
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            var bot = new TelegramBot();
+            var parser = new NewsParser(bot);
+            while (true)
+            {
+                parser.Parse();
+                Thread.Sleep(TimeSpan.FromSeconds(1));
+            }
+        }
+    }
+}

src/RgDevBot/RgDevBot.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Telegram.Bot" Version="10.4.0" />
+  </ItemGroup>
+
+</Project>

src/RgDevBot/TelegramBot.cs

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+using System;
+using Telegram.Bot;
+
+namespace RgDevBot
+{
+    public class TelegramBot
+    {
+        private readonly TelegramBotClient _telegram;
+        public string Token => "1479535614:AAFqHdsUFikzOti0zknK_pN2sEONNAXecPY";
+        public long MainChatId;
+
+        public TelegramBot(long chatId = -415825856)
+        {
+            MainChatId = chatId;
+            _telegram = new TelegramBotClient(Token);
+            _telegram.OnMessage += Bot_OnMessage;
+            _telegram.StartReceiving();
+        }
+
+        public void Bot_OnMessage(object sender, Telegram.Bot.Args.MessageEventArgs e)
+        {
+            Console.WriteLine($"[{e.Message.Chat.Id}, user: {e.Message.From.Id}] @{e.Message.From?.Username}: {e.Message.Text}");
+        }
+
+        public void SendMessage(string message, long? chatId = null)
+        {
+            _telegram.SendTextMessageAsync(chatId ?? MainChatId, message).GetAwaiter().GetResult();
+        }
+    }
+}