using DSharpPlus;

using System.Threading.Tasks;

using System;

using System.Collections.Generic;

​

public class User

{

    public User()

    {

        name = "Unknown";

        timeSinceActive = 0;

        throw new System.FormatException("ID was not included");

    }

    public User(string ID)

    {

        name = "Unknown";

        timeSinceActive = 0;

        id = ID;

    }

​

    public User(string Name, string ID)

    {

        if (Name.Length >= 1)

        {

            name = Name;

        }

        else

        {

            name = "Unknown";

        }

        timeSinceActive = 0;

        id = ID;

    }

​

    public string name { get; set; }

    public string id { get; set; }

    public int timeSinceActive { get; set; }

​

    public override string ToString()

    {

        return name;

    }

}

​

public class Program

    {

        static DiscordClient discord;

​

        static async Task MainAsync()

        {

            discord = new DiscordClient(new DiscordConfiguration

            {

                Token = "NzA1Nzg5NDEwMzg1NDYxMjk4.XqwznA.8f8oiSbPjlU34htvjd2cWMMLyOA",

                TokenType = TokenType.Bot

            });

            var userList = new List<User>();

            var userIDList = new List<string>();

​

            discord.MessageCreated += async e =>

            {

                //if (!userIDList.Contains(e.Author.Id.ToString()))

                {

                    userList.Add(new User{ name = e.Author.Username, timeSinceActive = 0, id = e.Author.Id.ToString()});

                    userIDList.Add(e.Author.Id.ToString());

                }

                await e.Message.RespondAsync(userList.Count.ToString());

                await e.Message.RespondAsync("Name: \"" + userList[0].name + "\", Time since active: " + userList[0].timeSinceActive.ToString() + ", ID: " + userList[0].id);

                await e.Message.RespondAsync(userIDList[0]);

                await e.Message.RespondAsync(userIDList.Find(stringToCheck => stringToCheck.Contains(e.Author.Id.ToString()))); 

            };

            await discord.ConnectAsync();

            await Task.Delay(-1);

        }

        public static void Main()

        {

            MainAsync().ConfigureAwait(false).GetAwaiter().GetResult();

        }

    }