files tree made better.

src/cli/Commands/SendMailCommand.cs

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+
+using Microsoft.AspNet.Hosting;
+using Microsoft.Extensions.CommandLineUtils;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using cli.Services;
+using cli.Model;
+
+namespace cli {
+    
+public class SendMailCommandProvider : ICommander {
+        public CommandLineApplication Integrate(CommandLineApplication rootApp)
+        {
+         CommandArgument sendMailCommandArg = null;
+         CommandOption sendHelpOption = null;
+         CommandLineApplication sendMailCommandApp 
+            = rootApp.Command("send",
+                (target) =>
+                {
+                    target.FullName = "Send email";
+                    target.Description = "Sends emails using given template";
+                    sendHelpOption = target.HelpOption("-? | -h | --help");
+                    sendMailCommandArg = target.Argument(
+                    "class",
+                    "class name of mailling to execute (actually, only 'monthly') .",
+                    multipleValues: true);
+                }, false);
+
+            sendMailCommandApp.OnExecute(() =>
+            {
+                if (sendMailCommandArg.Value == "monthly")
+                {
+                    var host = new WebHostBuilder();
+                    var hostengnine = host.UseEnvironment("Development")
+                        .UseServer("cli")
+                        .UseStartup<Startup>()
+                        .Build();
+                    var app = hostengnine.Start();
+                    var mailer = app.Services.GetService<EMailer>();
+                    var loggerFactory = app.Services.GetService<ILoggerFactory>();
+                    var logger = loggerFactory.CreateLogger<cli.Program>();
+                    logger.LogInformation("Starting emailling");
+                    mailer.SendMonthlyEmail(1, "UserOrientedTemplate");
+                    logger.LogInformation("Finished emailling");
+                }
+                else
+                {
+                    sendMailCommandApp.ShowHelp();
+                }
+                return 0;
+            });
+            return sendMailCommandApp;
+        }
+    }
+}