Program.cs

using System;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using static BTD6Helper.Credentials;

namespace BTD6Helper;

public static class Program
{
    private static readonly HttpClient HttpClient = new();
    
    private static readonly DiscordSocketConfig SocketConfig = new()
    {
        AlwaysDownloadUsers = false,
        GatewayIntents = GatewayIntents.GuildMessages | GatewayIntents.Guilds | GatewayIntents.MessageContent,
        LargeThreshold = 0,
        MessageCacheSize = 0,
        AlwaysDownloadDefaultStickers = false,
        AlwaysResolveStickers = false
    };

    private static readonly DiscordSocketClient Client = new(SocketConfig);

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    private static void Main()
    {
        Client.Log += message =>
        {
            return Task.Run(() =>
            {
                Console.WriteLine($"[General/{message.Severity}] {message.ToString()}");
            });
        };
        Client.MessageReceived += MessageReceivedAsync;
        
        MainTask().GetAwaiter().GetResult();
    }
    
    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    private static async Task MainTask()
    {
        _ = Client.LoginAsync(TokenType.Bot, Token).ContinueWith(async _ =>
        {
            await Client.StartAsync().ConfigureAwait(false);
        });
        
        await Task.Delay(Timeout.Infinite).ConfigureAwait(false);
    }

    static readonly HashSet<ulong> NonNexusRoles = new()
    {
        519890781260087298, //Owner
        504787304678948878, //Admins
        504790435043082244, //Staff Team
        504788177853087744, //Modders
    };

    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    private static Task MessageReceivedAsync(SocketMessage message)
    {
        if (message.Author.IsBot)
            return Task.CompletedTask;

        if (message.Content.Contains("nexus", StringComparison.InvariantCultureIgnoreCase) && message.Author is SocketGuildUser guildUser && !guildUser.Roles.Any(role => NonNexusRoles.Contains(role.Id)))
        {
            _ = message.Channel.SendMessageAsync(messageReference: new MessageReference(message.Id), text: "Do not use nexus, you will not receive help with it, most of the mods are outdated and broken, or stolen. Use mods from this server or the mod browser instead.");
            return Task.CompletedTask;
        }
        
        switch (message.Content)
        {
            case "!log":
                _ = message.Channel.SendMessageAsync("How to find your Log file:\n\n- go to your game's root folder. It's the folder that contains your Mods folder\n- open the MelonLoader folder\n- find the file called Latest or Latest.log\n- drag and drop that file here");
                return Task.CompletedTask;
            case "!uninstall":
                _ = message.Channel.SendMessageAsync("**How to uninstall Mods and MelonLoader:**\nRemove the MelonLoader, Mods, Plugins, UserData, UserLibs folders as well as dobby.dll, notice.txt and version.dll.");
                return Task.CompletedTask;
            case ".":
                return Task.CompletedTask;
        }
        
        if (message.Attachments.Count == 0)
            return Task.CompletedTask;
        
        HttpClient.GetByteArrayAsync(message.Attachments.First().Url).ContinueWith(task =>
        {
            var log = Encoding.UTF8.GetString(task.Result);
            if (!IsLog(log))
            {
                return Task.CompletedTask;
            }

            try
            {
                new LogScanner(log, message).PerformScan();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
            
            return Task.CompletedTask;
        }, TaskContinuationOptions.OnlyOnRanToCompletion | TaskContinuationOptions.RunContinuationsAsynchronously);
        
        return Task.CompletedTask;
    }
    
    [MethodImpl(MethodImplOptions.AggressiveInlining)]
    private static bool IsLog(string log) => log.Contains("MelonLoader v") && log.Contains("BloonsTD6");
    
    
}