UserPresenceUpdatedResponder.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Discord;
using Discord.WebSocket;
using FATMAN.Managers;

namespace FATMAN.Responders
{
    public class UserPresenceUpdatedResponder
    {
        private Dictionary<ulong, string> _personalizedGifs = new Dictionary<ulong, string>()
        {
            { 90548197604212736, "http://i.imgur.com/biDFHU0.gif" }, //me
            { 226749613154107392, "http://www.reactiongifs.com/wp-content/uploads/2013/06/supa-hot-fire.gif" }, //gman
            { 229357796691410944, "http://i.imgur.com/kIS2bKX.gif" }, //corey
            { 171392216390959106, "https://media.giphy.com/media/26tjZlGxNsLeIXpfi/giphy.gif" }, //chris
            { 230715453687726081, "https://media.giphy.com/media/ReltUjiLEcpdS/giphy.gif" }, //mo
            { 228350284148113409, "https://media.giphy.com/media/12YpCtHZrngfa8/giphy.gif" }, //sean
            { 242401114295631875, "https://media0.giphy.com/media/JOttuKV7UDVHa/giphy.gif" }, //martin
        };

        public async Task RespondAsync(Optional<SocketGuild> arg1, SocketUser arg2, SocketPresence arg3, SocketPresence arg4)
        {
            if (arg3.Status == UserStatus.Offline && arg4.Status == UserStatus.Online)
            {
                var message = ":trumpet: **<@!" + arg2.Id + ">** has joined us.  Herald his arrival! :trumpet:";

                if (_personalizedGifs.ContainsKey(arg2.Id))
                    message += Environment.NewLine + _personalizedGifs[arg2.Id];

                await DiscordManager.Instance.SpeakTextChannel.SendMessageAsync(message);
            }
        }
    }
}