Initialize service

Directory.Packages.props

@@ -1,6 +1,8 @@
 <Project>
     <PropertyGroup>
         <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
         <MicrosoftVersion>8.0.0</MicrosoftVersion>
         <InsightTelegramBotVersion>0.16.0</InsightTelegramBotVersion>
     </PropertyGroup>
@@ -15,5 +17,6 @@
         <PackageVersion Include="Serilog.Settings.Configuration" Version="8.0.0"/>
     </ItemGroup>
     <ItemGroup Label="Microsoft">
+        <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="$(MicrosoftVersion)"/>
     </ItemGroup>
 </Project>

Nocr.TelegramClient.sln

@@ -8,9 +8,29 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		README.md = README.md
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nocr.TelegramClient.Core", "src\Nocr.TelegramClient.Core\Nocr.TelegramClient.Core.csproj", "{3E87693C-78DF-469B-BAA3-CB103F8EA80B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nocr.TelegramClient.AppServices", "src\Nocr.TelegramClient.AppServices\Nocr.TelegramClient.AppServices.csproj", "{5CCB085C-860A-4C4C-907C-10183ABCEA9B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nocr.TelegramClient.Host", "src\Nocr.TelegramClient.Host\Nocr.TelegramClient.Host.csproj", "{58D5C9FD-75A9-4FFB-9FBD-BE8E9FCE3016}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{3E87693C-78DF-469B-BAA3-CB103F8EA80B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3E87693C-78DF-469B-BAA3-CB103F8EA80B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3E87693C-78DF-469B-BAA3-CB103F8EA80B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3E87693C-78DF-469B-BAA3-CB103F8EA80B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5CCB085C-860A-4C4C-907C-10183ABCEA9B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5CCB085C-860A-4C4C-907C-10183ABCEA9B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5CCB085C-860A-4C4C-907C-10183ABCEA9B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5CCB085C-860A-4C4C-907C-10183ABCEA9B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{58D5C9FD-75A9-4FFB-9FBD-BE8E9FCE3016}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{58D5C9FD-75A9-4FFB-9FBD-BE8E9FCE3016}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{58D5C9FD-75A9-4FFB-9FBD-BE8E9FCE3016}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{58D5C9FD-75A9-4FFB-9FBD-BE8E9FCE3016}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
 EndGlobal

src/Nocr.TelegramClient.AppServices/BotClient.cs

@@ -0,0 +1,31 @@
+using Insight.TelegramBot;
+using Insight.TelegramBot.Models;
+using Microsoft.Extensions.Logging;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+
+namespace Nocr.TelegramClient.AppServices;
+
+public sealed class BotClient : Bot
+{
+    private readonly ILogger<BotClient> _logger;
+
+    public BotClient(ILogger<BotClient> logger, ITelegramBotClient client) : base(client)
+    {
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+    public override Task<Message> SendMessageAsync(TextMessage message,
+        CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            return base.SendMessageAsync(message, cancellationToken);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Bot can't initiate conversation with a user: {message}", message);
+            throw;
+        }
+    }
+}

src/Nocr.TelegramClient.AppServices/Handlers/Messages/StartMessageHandler.cs

@@ -0,0 +1,28 @@
+using Insight.TelegramBot;
+using Insight.TelegramBot.Handling.Handlers;
+using Insight.TelegramBot.Models;
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+
+namespace Nocr.TelegramClient.AppServices.Handlers.Messages;
+
+public class StartMessageHandler : IMatchingUpdateHandler<StartMessageMatcher>
+{
+    private readonly IBot _bot;
+
+    public StartMessageHandler(IBot bot)
+    {
+        _bot = bot ?? throw new ArgumentNullException(nameof(bot));
+    }
+    
+    public Task Handle(Update update, CancellationToken cancellationToken = default)
+    {
+        var message = new TextMessage(update.Message.Chat)
+        {
+            Text = "Привет! Я _bot_name_",
+            ParseMode = ParseMode.Html
+        };
+
+        return _bot.SendMessageAsync(message, cancellationToken);
+    }
+}

src/Nocr.TelegramClient.AppServices/Handlers/Messages/StartMessageMatcher.cs

@@ -0,0 +1,11 @@
+using Insight.TelegramBot.Handling.Matchers.TextMatchers;
+
+namespace Nocr.TelegramClient.AppServices.Handlers.Messages;
+
+public sealed class StartMessageMatcher : TextStartWithUpdateMatcher
+{
+    public StartMessageMatcher()
+    {
+        Template = "/start";
+    }
+}

src/Nocr.TelegramClient.AppServices/Nocr.TelegramClient.AppServices.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <ItemGroup>
+        <PackageReference Include="Insight.TelegramBot" />
+        <PackageReference Include="Insight.TelegramBot.Handling" />
+        <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" />
+    </ItemGroup>
+
+</Project>

src/Nocr.TelegramClient.Core/Dates/DefaultCurrentDateProvider.cs

@@ -0,0 +1,6 @@
+namespace Nocr.TelegramClient.Core.Dates;
+
+public sealed class DefaultCurrentDateProvider : ICurrentDateProvider
+{
+    public DateTimeOffset UtcNow => DateTimeOffset.UtcNow;
+}

src/Nocr.TelegramClient.Core/Dates/ICurrentDateProvider.cs

@@ -0,0 +1,6 @@
+namespace Nocr.TelegramClient.Core.Dates;
+
+public interface ICurrentDateProvider
+{
+    public DateTimeOffset UtcNow { get; }
+}

src/Nocr.TelegramClient.Core/Nocr.TelegramClient.Core.csproj

@@ -0,0 +1 @@
+<Project Sdk="Microsoft.NET.Sdk" />

src/Nocr.TelegramClient.Host/Infrastructure/HostBuilderFactory.cs

@@ -0,0 +1,24 @@
+using Serilog;
+
+namespace Nocr.TelegramClient.Host.Infrastructure;
+
+public class HostBuilderFactory<TStartup> where TStartup : class
+{
+    public IHostBuilder CreateHostBuilder(string[] args, string? baseDirectory = null)
+    {
+        var builder = Microsoft.Extensions.Hosting.Host.CreateDefaultBuilder(args)
+            .ConfigureAppConfiguration((_, configurationBuilder) =>
+            {
+                if (!string.IsNullOrWhiteSpace(baseDirectory))
+                    configurationBuilder.SetBasePath(baseDirectory);
+            })
+            .ConfigureWebHostDefaults(host => { host.UseStartup<TStartup>(); })
+            .UseSerilog((ctx, logBuilder) =>
+            {
+                logBuilder.ReadFrom.Configuration(ctx.Configuration)
+                    .Enrich.FromLogContext();
+            });
+
+        return builder;
+    }
+}

src/Nocr.TelegramClient.Host/Infrastructure/Startup.cs

@@ -0,0 +1,37 @@
+using System.Data;
+using Insight.TelegramBot.Handling.Infrastructure;
+using Insight.TelegramBot.Hosting.DependencyInjection.Infrastructure;
+using Insight.TelegramBot.Hosting.Polling.ExceptionHandlers;
+using Microsoft.Extensions.Options;
+using Nocr.TelegramClient.AppServices;
+using Nocr.TelegramClient.Core.Dates;
+
+namespace Nocr.TelegramClient.Host.Infrastructure;
+
+public class Startup
+{
+    public IConfiguration Configuration { get; }
+
+    public Startup(IConfiguration configuration)
+    {
+        Configuration = configuration;
+    }
+
+    public void ConfigureServices(IServiceCollection services)
+    {
+        services.AddSingleton<ICurrentDateProvider, DefaultCurrentDateProvider>();
+
+        services.AddTelegramBot(bot =>
+            bot.WithBot<BotClient>(ServiceLifetime.Transient)
+                .WithTelegramBotClient(client => client
+                    .WithLifetime(ServiceLifetime.Singleton)
+                    .WithMicrosoftHttpClientFactory())
+                .WithOptions(opt => opt.FromConfiguration(Configuration))
+                .WithPolling(polling => polling.WithExceptionHandler<LoggingPollingExceptionHandler>()));
+        services.AddTelegramBotHandling(typeof(BotClient).Assembly);
+    }
+
+    public void Configure(IApplicationBuilder app)
+    {
+    }
+}

src/Nocr.TelegramClient.Host/Nocr.TelegramClient.Host.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+    <PropertyGroup>
+        <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Insight.TelegramBot.Hosting.DependencyInjection" />
+        <PackageReference Include="Serilog.AspNetCore" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Nocr.TelegramClient.AppServices\Nocr.TelegramClient.AppServices.csproj" />
+      <ProjectReference Include="..\Nocr.TelegramClient.Core\Nocr.TelegramClient.Core.csproj" />
+    </ItemGroup>
+    
+</Project>

src/Nocr.TelegramClient.Host/Program.cs

@@ -0,0 +1,7 @@
+using Nocr.TelegramClient.Host.Infrastructure;
+
+var host = new HostBuilderFactory<Startup>()
+    .CreateHostBuilder(args)
+    .Build();
+
+await host.RunAsync();

src/Nocr.TelegramClient.Host/appsettings.Development.json

@@ -0,0 +1,20 @@
+{
+  "Serilog": {
+    "WriteTo": [
+      {
+        "Name": "Console",
+        "Args": {
+          "outputTemplate": "[{Level:u3}] {Timestamp:MM-dd HH:mm:ss} {TraceId} {SourceContext:l} {Message:lj}{NewLine}{Exception}"
+        }
+      }
+    ]
+  },
+  "TelegramBotOptions": {
+    "WebHook": {
+      "UseWebHook": false,
+      "WebHookBaseUrl": "http://localhost",
+      "WebHookPath": "update/TokenPartAfterDoubleDot"
+    },
+    "Token": ""
+  }
+}

src/Nocr.TelegramClient.Host/appsettings.Production.json

@@ -0,0 +1,25 @@
+{
+  "Serilog": {
+    "MinimumLevel": {
+      "Default": "Information"
+    },
+    "WriteTo": [
+      {
+        "Name": "Console",
+        "Args": {
+          "outputTemplate": "[{Level:u3}] {Timestamp:MM-dd HH:mm:ss} {TraceId} {SourceContext:l} {Message:lj}{NewLine}{Exception}"
+        }
+      },
+      {
+        "Name": "File",
+        "Args": {
+          "path": "/var/log/nocr/telegram-client/nocr-telegram-client-.log",
+          "outputTemplate": "[{Level:u3}] {Timestamp:dd-MM-yyyy HH:mm:ss} {TraceId} {SourceContext:l} {Message:lj}{NewLine}{Exception}",
+          "fileSizeLimitBytes": 104857600,
+          "rollingInterval": "Day",
+          "rollOnFileSizeLimit": true
+        }
+      }
+    ]
+  }
+}

src/Nocr.TelegramClient.Host/appsettings.json

@@ -0,0 +1,12 @@
+{
+  "Serilog": {
+    "MinimumLevel": {
+      "Default": "Debug",
+      "Override": {
+        "Microsoft": "Information",
+        "Microsoft.AspNetCore": "Error",
+        "System.Net.Http.HttpClient": "Warning"
+      }
+    }
+  }
+}