namespace DiscordBOTRP
{
    class Program
    {
    public static Int32 limit;

        static void Main(string[] args) => new Program().RunBotAsync().GetAwaiter().GetResult();
        private DiscordSocketClient _client;
        private CommandService _commands;
        private IServiceProvider _services;

        public async Task RunBotAsync()
        {
            _client = new DiscordSocketClient();
            _commands = new CommandService();

            _services = new ServiceCollection()
                .AddSingleton(_client)
                .AddSingleton(_commands)
                .BuildServiceProvider();

            string botToken = "NDgxNDQ3MDY5Mjc0NDcyNDYw.DmSvgg.DAkGPuMDY7VNpWRY18SSDOfccNU";

            _client.Log += Log;

            await RegisterCommandsAsync();

            await _client.LoginAsync(TokenType.Bot, botToken);

            await _client.StartAsync();

            await Task.Delay(-1);
        }

        private Task Log(LogMessage arg)
        {
            Console.WriteLine(arg);

            return Task.CompletedTask;
        }

        public async Task RegisterCommandsAsync()
        {
            _client.MessageReceived += HandleCommandAsync;

            await _commands.AddModulesAsync(Assembly.GetEntryAssembly());

        }

        public static string getBetween(string strSource, string strStart, string strEnd)
        {
            int Start, End;
            if (strSource.Contains(strStart) && strSource.Contains(strEnd))
            {
                Start = strSource.IndexOf(strStart, 0) + strStart.Length;
                End = strSource.IndexOf(strEnd, Start);
                return strSource.Substring(Start, End - Start);
            }
            else
            {
                return "";
            }
        }

        private async Task HandleCommandAsync(SocketMessage arg)
        {
            var message = arg as SocketUserMessage;

            if (message is null || message.Author.IsBot) return;

            int argPos = 0;

            if(message.HasStringPrefix(":", ref argPos) || message.HasMentionPrefix(_client.CurrentUser, ref argPos))
            {
                var context = new SocketCommandContext(_client, message);

                var result = await _commands.ExecuteAsync(context, argPos, _services);

                if (!result.IsSuccess)
                    Console.WriteLine(result.ErrorReason);
            }
        }
    }
}