Lunaris2.0/Bot/Registration/DiscordBotRegistration.cs

using System.Reflection;
using Discord;
using Discord.Interactions;
using Discord.WebSocket;
using Lunaris2.Notification;
using Lunaris2.Service;
using Lunaris2.SlashCommand;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Lunaris2.Registration
{
    public static class DiscordBotRegistration
    {
        public static IServiceCollection AddDiscordBot(this IServiceCollection services, IConfiguration configuration)
        {
            var config = new DiscordSocketConfig
            {
                GatewayIntents = GatewayIntents.All
            };

            var client = new DiscordSocketClient(config);

            services
                .AddMediatR(mediatRServiceConfiguration =>
                    mediatRServiceConfiguration.RegisterServicesFromAssembly(Assembly.GetExecutingAssembly()))
                .AddMusicPlayer(configuration)
                .AddSingleton(client)
                .AddSingleton<DiscordEventListener>()
                .AddSingleton(service => new InteractionService(service.GetRequiredService<DiscordSocketClient>()))
                .AddChat(configuration);

            client.Ready += () => Client_Ready(client);
            client.Log += Log;

            client
                .LoginAsync(TokenType.Bot, configuration["Token"])
                .GetAwaiter()
                .GetResult();

            client
                .StartAsync()
                .GetAwaiter()
                .GetResult();

            var listener = services
                .BuildServiceProvider()
                .GetRequiredService<DiscordEventListener>();

            listener
                .StartAsync()
                .GetAwaiter()
                .GetResult();

            return services;
        }

        private static Task Client_Ready(DiscordSocketClient client)
        {
            client.RegisterCommands();

            new VoiceChannelMonitorService(client).StartMonitoring();
            return Task.CompletedTask;
        }

        private static Task Log(LogMessage arg)
        {
            Console.WriteLine(arg);
            return Task.CompletedTask;
        }
    }
}