maki/Maki/DiscordMember.cs

using Maki.Rest;
using Maki.Structures.Guilds;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Maki
{
    public class DiscordMember
    {
        public readonly DiscordUser User;
        public readonly DiscordServer Server;
        private readonly Discord client;

        public IEnumerable<DiscordRole> Roles => client.RoleManager.Server(Server).Where(x => HasRole(x.Id));

        public DateTime Joined { get; internal set; }
        public string Nickname { get; internal set; }
        public bool IsDeaf { get; internal set; }
        public bool IsMute { get; internal set; }

        public string Name => string.IsNullOrEmpty(Nickname) ? User.Username : Nickname;
        public string NameWithTag => $"{Name}#{User.Tag:0000}";

        public override string ToString() => $@"<@!{User.Id}>";
        
        internal List<ulong> roles = new List<ulong>();

        internal DiscordMember(Discord discord, GuildMember member, DiscordUser user, DiscordServer server)
        {
            client = discord;
            User = user;
            Server = server;
            Nickname = member.Nickname;
            Joined = member.JoinedAt ?? DateTime.MinValue;
            IsDeaf = member.IsDeafened == true;
            IsMute = member.IsMuted == true;
            roles.AddRange(member.Roles);
        }
        
        public bool HasRole(ulong id) => roles.Contains(id);

        public void AddRoles(params DiscordRole[] roles)
        {
            foreach (DiscordRole role in roles)
            {
                using (WebRequest wr = new WebRequest(HttpMethod.PUT, RestEndpoints.GuildMemberRole(Server.Id, User.Id, role.Id)))
                    wr.Perform();

                this.roles.Add(role.Id);
            }
        }
    }
}