cli-ninject-hosting/CustomHostingDemo/Program.cs

using CustomHostingDemo.Logging;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Ninject;
using System;
using System.CommandLine;
using System.CommandLine.Builder;
using System.CommandLine.Parsing;
using System.IO;
using System.Reflection;

namespace CustomHostingDemo
{
    class Program
    {
        static int Main(string[] args)
        {
            var kernel = new StandardKernel(
                new LoggingModule(),
                new CommandHandlerModule()
            );

            var config = new ConfigurationBuilder()
                .SetBasePath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location))
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: false)
                .AddJsonFile(Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"), "custom-demo.json"), optional: true, reloadOnChange: false)
                .Build();

            kernel.Bind<IConfiguration>().ToConstant(config).InSingletonScope();

            var logger = kernel.Get<Logger<Program>>();
            logger.LogInformation($"Informational Message - Hello {config["Hello"]}");
            logger.LogWarning("Ooopsie!");

            var rootCommand = new RootCommand()
            {
                new HelloCommand().Bind(kernel),
            };

            var parser = new CommandLineBuilder(rootCommand)
                .UseDefaults()
                .Build();

            return parser.InvokeAsync(args).Result;
        }
    }
}