using System;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using System.Reflection;
using System.Runtime.InteropServices;

namespace dotnet_console
{
    class Program
    {
        public static void Main(string[] args)
        {
            string version = typeof(RuntimeEnvironment).GetTypeInfo()
                                                       .Assembly
                                                       .GetCustomAttribute<AssemblyFileVersionAttribute>()
                                                       .Version;

            Console.WriteLine("Assembly file version: " + version);
            Console.WriteLine(".NET Core version: " + GetNetCoreVersion());

            string content = Task.Run(() => FetchString("http://motherfuckingwebsite.com", "/")).Result;
            Console.WriteLine("Content:");
            Console.WriteLine(content);
        }

        public static async Task<string> FetchString(string baseUrl, string path)
        {
            HttpClient client = new HttpClient();
            client.BaseAddress = new Uri(baseUrl);

            Console.WriteLine("Starting request...");
            HttpResponseMessage response = await client.GetAsync("/");
            if (!response.IsSuccessStatusCode)
                throw new Exception("Request failed with status: " + response.StatusCode);

            Console.WriteLine("Response received.");
            string body = await response.Content.ReadAsStringAsync();
            return body;
        }

        public static string GetNetCoreVersion()
        {
          var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;
          var assemblyPath = assembly.CodeBase.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);
          int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");
          if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)
            return assemblyPath[netCoreAppIndex + 1];
          return null;
        }
    }
}