PlaneSculptorsDiscordBot.cs

using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using Discord;

namespace PlaneSculptorsDiscordBot
{
    class Program
    {
        static void Main(string[] args)
        {
            var client = new DiscordClient();
            Server server = null;

            client.MessageReceived += async (s, e) =>
            {
                
                /*if (!e.Message.IsAuthor)
                    await e.Channel.SendMessage(e.Message.Text);*/

                if (e.Channel.Server == server/* && e.User.Name == "mzabsky"*/)
                {
                    try
                    {
                        // Parse the message
                        var regex = @"\[\[((?<set>[^:]+|[0-9]+|[0-9]+):((?<version>[a-z][a-z0-9-]+|[0-9]+|[0-9]+):)?)?(?<card>[^:]+?|[0-9]+)?\]\]";
                        var match = Regex.Match(e.Message.Text, regex);

                        if (!match.Success) return;

                        var context = e.Channel.Name;
                        var url = $@"http://www.planesculptors.net/autocard?context={context}&contextVersion=&set={match.Groups["set"]}&setVersion={match.Groups["version"]}&card={match.Groups["card"]}&bot";


                        Console.WriteLine($"#{e.Channel} {e.User}: {e.Message} -> {url}");

                        // Download card data from PlaneSculptors.net
                        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                        var response = request.GetResponse();
                        var responseStream = response.GetResponseStream();
                        var responseContentStream = new StreamReader(responseStream, Encoding.UTF8);
                        var responseContent = await responseContentStream.ReadToEndAsync();

                        // Respond to the message
                        if (responseContent.Length > 2000)
                        {
                            await e.Channel.SendMessage(match.Groups["card"].ToString() + " not found");
                        }
                        else
                        {
                            await e.Channel.SendMessage(responseContent);
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine(ex);
                    }
                }
            };

            client.ExecuteAndWait(async () => {
                await client.Connect("<discord username>", "<password>");
                server = client.Servers.Single(p => p.Name == "Custom Magic");
            });
        }
    }
}