Fixed several channel bugs and cleaned up WS channel entities.

src/Discord.Net/Common/Entities/Channels/IMessageChannel.cs

@@ -6,8 +6,12 @@ namespace Discord
 {
     public interface IMessageChannel : IChannel
     {
-        /// <summary> Gets the message in this message channel with the given id, or null if none was found. </summary>
-        Task<IMessage> GetMessage(ulong id);
+        /// <summary> Gets all messages in this channel's cache. </summary>
+        IEnumerable<IMessage> CachedMessages { get; }
+
+        /// <summary> Gets the message from this channel's cache with the given id, or null if none was found. </summary>
+        Task<IMessage> GetCachedMessage(ulong id);
+
         /// <summary> Gets the last N messages from this message channel. </summary>
         Task<IEnumerable<IMessage>> GetMessages(int limit = DiscordConfig.MaxMessagesPerBatch);
         /// <summary> Gets a collection of messages in this channel. </summary>

src/Discord.Net/Common/Entities/Users/IGuildUser.cs

@@ -21,8 +21,8 @@ namespace Discord
         IGuild Guild { get; }
         /// <summary> Returns a collection of the roles this user is a member of in this guild, including the guild's @everyone role. </summary>
         IReadOnlyList<IRole> Roles { get; }
-        /// <summary> Gets the id of the voice channel this user is  currently in, if any. </summary>
-        ulong? VoiceChannelId { get; }
+        /// <summary> Gets the voice channel this user is currently in, if any. </summary>
+        IVoiceChannel VoiceChannel { get; }
 
         /// <summary> Gets the guild-level permissions granted to this user by their roles. </summary>
         GuildPermissions GetGuildPermissions();

src/Discord.Net/Rest/Entities/Channels/DMChannel.cs

@@ -124,13 +124,14 @@ namespace Discord.Rest
         public override string ToString() => $"@{Recipient} [DM]";
         
         IDMUser IDMChannel.Recipient => Recipient;
+        IEnumerable<IMessage> IMessageChannel.CachedMessages => Array.Empty<Message>();
 
         async Task<IEnumerable<IUser>> IChannel.GetUsers()
             => await GetUsers().ConfigureAwait(false);
         async Task<IUser> IChannel.GetUser(ulong id)
             => await GetUser(id).ConfigureAwait(false);
-        Task<IMessage> IMessageChannel.GetMessage(ulong id)
-            => throw new NotSupportedException();
+        Task<IMessage> IMessageChannel.GetCachedMessage(ulong id)
+            => Task.FromResult<IMessage>(null);
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(int limit)
             => await GetMessages(limit).ConfigureAwait(false);
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(ulong fromMessageId, Direction dir, int limit)

src/Discord.Net/Rest/Entities/Channels/GuildChannel.cs

@@ -60,16 +60,11 @@ namespace Discord.Rest
         }
 
         /// <summary> Gets a user in this channel with the given id. </summary>
-        public async Task<GuildUser> GetUser(ulong id)
-        {
-            var model = await Discord.BaseClient.GetGuildMember(Guild.Id, id).ConfigureAwait(false);
-            if (model != null)
-                return new GuildUser(Guild, model);
-            return null;
-        }
-        protected abstract Task<IEnumerable<GuildUser>> GetUsers();
+        public abstract Task<GuildUser> GetUser(ulong id);
+        /// <summary> Gets all users in this channel. </summary>
+        public abstract Task<IEnumerable<GuildUser>> GetUsers();
 
-        /// <summary> Gets the permission overwrite for a specific user, or null if one does not exist. </summary>
+        /// <inheritdoc />
         public OverwritePermissions? GetPermissionOverwrite(IUser user)
         {
             Overwrite value;
@@ -77,7 +72,7 @@ namespace Discord.Rest
                 return value.Permissions;
             return null;
         }
-        /// <summary> Gets the permission overwrite for a specific role, or null if one does not exist. </summary>
+        /// <inheritdoc />
         public OverwritePermissions? GetPermissionOverwrite(IRole role)
         {
             Overwrite value;
@@ -92,21 +87,21 @@ namespace Discord.Rest
             return models.Select(x => new GuildInvite(Guild, x));
         }
 
-        /// <summary> Adds or updates the permission overwrite for the given user. </summary>
+        /// <inheritdoc />
         public async Task AddPermissionOverwrite(IUser user, OverwritePermissions perms)
         {
             var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue };
             await Discord.BaseClient.ModifyChannelPermissions(Id, user.Id, args).ConfigureAwait(false);
             _overwrites[user.Id] = new Overwrite(new API.Overwrite { Allow = perms.AllowValue, Deny = perms.DenyValue, TargetId = user.Id, TargetType = PermissionTarget.User });
         }
-        /// <summary> Adds or updates the permission overwrite for the given role. </summary>
+        /// <inheritdoc />
         public async Task AddPermissionOverwrite(IRole role, OverwritePermissions perms)
         {
             var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue };
             await Discord.BaseClient.ModifyChannelPermissions(Id, role.Id, args).ConfigureAwait(false);
             _overwrites[role.Id] = new Overwrite(new API.Overwrite { Allow = perms.AllowValue, Deny = perms.DenyValue, TargetId = role.Id, TargetType = PermissionTarget.Role });
         }
-        /// <summary> Removes the permission overwrite for the given user, if one exists. </summary>
+        /// <inheritdoc />
         public async Task RemovePermissionOverwrite(IUser user)
         {
             await Discord.BaseClient.DeleteChannelPermission(Id, user.Id).ConfigureAwait(false);
@@ -114,7 +109,7 @@ namespace Discord.Rest
             Overwrite value;
             _overwrites.TryRemove(user.Id, out value);
         }
-        /// <summary> Removes the permission overwrite for the given role, if one exists. </summary>
+        /// <inheritdoc />
         public async Task RemovePermissionOverwrite(IRole role)
         {
             await Discord.BaseClient.DeleteChannelPermission(Id, role.Id).ConfigureAwait(false);

src/Discord.Net/Rest/Entities/Channels/TextChannel.cs

@@ -37,14 +37,19 @@ namespace Discord.Rest
             Update(model);
         }
 
-        protected override async Task<IEnumerable<GuildUser>> GetUsers()
+        public override async Task<GuildUser> GetUser(ulong id)
+        {
+            var user = await Guild.GetUser(id).ConfigureAwait(false);
+            if (user != null && PermissionUtilities.GetValue(PermissionHelper.Resolve(user, this), ChannelPermission.ReadMessages))
+                return user;
+            return null;
+        }
+        public override async Task<IEnumerable<GuildUser>> GetUsers()
         {
             var users = await Guild.GetUsers().ConfigureAwait(false);
             return users.Where(x => PermissionUtilities.GetValue(PermissionHelper.Resolve(x, this), ChannelPermission.ReadMessages));
         }
-
-        /// <inheritdoc />
-        public Task<Message> GetMessage(ulong id) { throw new NotSupportedException(); } //Not implemented
+        
         /// <inheritdoc />
         public async Task<IEnumerable<Message>> GetMessages(int limit = DiscordConfig.MaxMessagesPerBatch)
         {
@@ -101,8 +106,10 @@ namespace Discord.Rest
         /// <inheritdoc />
         public override string ToString() => $"{base.ToString()} [Text]";
 
-        async Task<IMessage> IMessageChannel.GetMessage(ulong id)
-            => await GetMessage(id).ConfigureAwait(false);
+        IEnumerable<IMessage> IMessageChannel.CachedMessages => Array.Empty<Message>();
+
+        Task<IMessage> IMessageChannel.GetCachedMessage(ulong id)
+            => Task.FromResult<IMessage>(null);
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(int limit)
             => await GetMessages(limit).ConfigureAwait(false);
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(ulong fromMessageId, Direction dir, int limit)

src/Discord.Net/Rest/Entities/Channels/VoiceChannel.cs

@@ -1,7 +1,6 @@
 using Discord.API.Rest;
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Threading.Tasks;
 using Model = Discord.API.Channel;
 
@@ -33,11 +32,8 @@ namespace Discord.Rest
             Update(model);
         }
 
-        protected override async Task<IEnumerable<GuildUser>> GetUsers()
-        {
-            var users = await Guild.GetUsers().ConfigureAwait(false);
-            return users.Where(x => PermissionUtilities.GetValue(PermissionHelper.Resolve(x, this), ChannelPermission.Connect));
-        }
+        public override Task<GuildUser> GetUser(ulong id) { throw new NotSupportedException(); }
+        public override Task<IEnumerable<GuildUser>> GetUsers() { throw new NotSupportedException(); }
 
         /// <inheritdoc />
         public override string ToString() => $"{base.ToString()} [Voice]";

src/Discord.Net/Rest/Entities/Guilds/Guild.cs

@@ -134,7 +134,6 @@ namespace Discord.Rest
             var args = new ModifyGuildEmbedParams();
             func(args);
             var model = await Discord.BaseClient.ModifyGuildEmbed(Id, args).ConfigureAwait(false);
-
             Update(model);
         }
         /// <inheritdoc />

src/Discord.Net/Rest/Entities/Users/GuildUser.cs

@@ -109,7 +109,7 @@ namespace Discord.Rest
 
         IGuild IGuildUser.Guild => Guild;
         IReadOnlyList<IRole> IGuildUser.Roles => Roles;
-        ulong? IGuildUser.VoiceChannelId => null;
+        IVoiceChannel IGuildUser.VoiceChannel => null;
 
         ChannelPermissions IGuildUser.GetPermissions(IGuildChannel channel)
             => GetPermissions(channel);

src/Discord.Net/WebSocket/Entities/Channels/DMChannel.cs

@@ -24,6 +24,7 @@ namespace Discord.WebSocket
         public DateTime CreatedAt => DateTimeHelper.FromSnowflake(Id);
         /// <inheritdoc />
         public IEnumerable<IUser> Users => ImmutableArray.Create<IUser>(Discord.CurrentUser, Recipient);
+        public IEnumerable<Message> CachedMessages => _messages.Messages;
 
         internal DMChannel(DiscordClient discord, Model model)
         {
@@ -52,15 +53,20 @@ namespace Discord.WebSocket
                 return null;
         }
 
-        /// <inheritdoc />
+        /// <summary> Gets the message from this channel's cache with the given id, or null if none was found. </summary>
+        public Message GetCachedMessage(ulong id)
+        {
+            return _messages.Get(id);
+        }
+        /// <summary> Gets the last N messages from this message channel. </summary>
         public async Task<IEnumerable<Message>> GetMessages(int limit = DiscordConfig.MaxMessagesPerBatch)
         {
-            return await _messages.GetMany(null, Direction.Before, limit).ConfigureAwait(false);
+            return await _messages.Download(null, Direction.Before, limit).ConfigureAwait(false);
         }
-        /// <inheritdoc />
+        /// <summary> Gets a collection of messages in this channel. </summary>
         public async Task<IEnumerable<Message>> GetMessages(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
         {
-            return await _messages.GetMany(fromMessageId, dir, limit).ConfigureAwait(false);
+            return await _messages.Download(fromMessageId, dir, limit).ConfigureAwait(false);
         }
 
         /// <inheritdoc />
@@ -111,13 +117,14 @@ namespace Discord.WebSocket
         public override string ToString() => $"@{Recipient} [DM]";
         
         IDMUser IDMChannel.Recipient => Recipient;
+        IEnumerable<IMessage> IMessageChannel.CachedMessages => CachedMessages;
 
         Task<IEnumerable<IUser>> IChannel.GetUsers()
             => Task.FromResult(Users);
         Task<IUser> IChannel.GetUser(ulong id)
             => Task.FromResult(GetUser(id));
-        Task<IMessage> IMessageChannel.GetMessage(ulong id)
-            => throw new NotSupportedException();
+        Task<IMessage> IMessageChannel.GetCachedMessage(ulong id)
+            => Task.FromResult<IMessage>(GetCachedMessage(id));
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(int limit)
             => await GetMessages(limit).ConfigureAwait(false);
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(ulong fromMessageId, Direction dir, int limit)

src/Discord.Net/WebSocket/Entities/Channels/GuildChannel.cs

@@ -11,7 +11,7 @@ namespace Discord.WebSocket
     public abstract class GuildChannel : IGuildChannel
     {
         private ConcurrentDictionary<ulong, Overwrite> _overwrites;
-        private ChannelPermissionsCache _permissions;
+        internal ChannelPermissionsCache _permissions;
 
         /// <inheritdoc />
         public ulong Id { get; }
@@ -22,6 +22,7 @@ namespace Discord.WebSocket
         public string Name { get; private set; }
         /// <inheritdoc />
         public int Position { get; private set; }
+        public abstract IEnumerable<GuildUser> Users { get; }
 
         /// <inheritdoc />
         public DateTime CreatedAt => DateTimeHelper.FromSnowflake(Id);
@@ -56,20 +57,13 @@ namespace Discord.WebSocket
 
             var args = new ModifyGuildChannelParams();
             func(args);
-            var model = await Discord.BaseClient.ModifyGuildChannel(Id, args).ConfigureAwait(false);
+            await Discord.BaseClient.ModifyGuildChannel(Id, args).ConfigureAwait(false);
         }
 
         /// <summary> Gets a user in this channel with the given id. </summary>
-        public async Task<GuildUser> GetUser(ulong id)
-        {
-            var model = await Discord.BaseClient.GetGuildMember(Guild.Id, id).ConfigureAwait(false);
-            if (model != null)
-                return new GuildUser(Guild, model);
-            return null;
-        }
-        protected abstract Task<IEnumerable<GuildUser>> GetUsers();
+        public abstract GuildUser GetUser(ulong id);
 
-        /// <summary> Gets the permission overwrite for a specific user, or null if one does not exist. </summary>
+        /// <inheritdoc />
         public OverwritePermissions? GetPermissionOverwrite(IUser user)
         {
             Overwrite value;
@@ -77,7 +71,7 @@ namespace Discord.WebSocket
                 return value.Permissions;
             return null;
         }
-        /// <summary> Gets the permission overwrite for a specific role, or null if one does not exist. </summary>
+        /// <inheritdoc />
         public OverwritePermissions? GetPermissionOverwrite(IRole role)
         {
             Overwrite value;
@@ -92,35 +86,27 @@ namespace Discord.WebSocket
             return models.Select(x => new GuildInvite(Guild, x));
         }
 
-        /// <summary> Adds or updates the permission overwrite for the given user. </summary>
+        /// <inheritdoc />
         public async Task AddPermissionOverwrite(IUser user, OverwritePermissions perms)
         {
             var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue };
             await Discord.BaseClient.ModifyChannelPermissions(Id, user.Id, args).ConfigureAwait(false);
-            _overwrites[user.Id] = new Overwrite(new API.Overwrite { Allow = perms.AllowValue, Deny = perms.DenyValue, TargetId = user.Id, TargetType = PermissionTarget.User });
         }
-        /// <summary> Adds or updates the permission overwrite for the given role. </summary>
+        /// <inheritdoc />
         public async Task AddPermissionOverwrite(IRole role, OverwritePermissions perms)
         {
             var args = new ModifyChannelPermissionsParams { Allow = perms.AllowValue, Deny = perms.DenyValue };
             await Discord.BaseClient.ModifyChannelPermissions(Id, role.Id, args).ConfigureAwait(false);
-            _overwrites[role.Id] = new Overwrite(new API.Overwrite { Allow = perms.AllowValue, Deny = perms.DenyValue, TargetId = role.Id, TargetType = PermissionTarget.Role });
         }
-        /// <summary> Removes the permission overwrite for the given user, if one exists. </summary>
+        /// <inheritdoc />
         public async Task RemovePermissionOverwrite(IUser user)
         {
             await Discord.BaseClient.DeleteChannelPermission(Id, user.Id).ConfigureAwait(false);
-
-            Overwrite value;
-            _overwrites.TryRemove(user.Id, out value);
         }
-        /// <summary> Removes the permission overwrite for the given role, if one exists. </summary>
+        /// <inheritdoc />
         public async Task RemovePermissionOverwrite(IRole role)
         {
             await Discord.BaseClient.DeleteChannelPermission(Id, role.Id).ConfigureAwait(false);
-
-            Overwrite value;
-            _overwrites.TryRemove(role.Id, out value);
         }
 
         /// <summary> Creates a new invite to this channel. </summary>
@@ -152,14 +138,14 @@ namespace Discord.WebSocket
             => await CreateInvite(maxAge, maxUses, isTemporary, withXkcd).ConfigureAwait(false);
         async Task<IEnumerable<IGuildInvite>> IGuildChannel.GetInvites()
             => await GetInvites().ConfigureAwait(false);
-        async Task<IEnumerable<IGuildUser>> IGuildChannel.GetUsers()
-            => await GetUsers().ConfigureAwait(false);
-        async Task<IGuildUser> IGuildChannel.GetUser(ulong id)
-            => await GetUser(id).ConfigureAwait(false);
-        async Task<IEnumerable<IUser>> IChannel.GetUsers()
-            => await GetUsers().ConfigureAwait(false);
-        async Task<IUser> IChannel.GetUser(ulong id)
-            => await GetUser(id).ConfigureAwait(false);
+        Task<IEnumerable<IGuildUser>> IGuildChannel.GetUsers()
+            => Task.FromResult<IEnumerable<IGuildUser>>(Users);
+        Task<IGuildUser> IGuildChannel.GetUser(ulong id)
+            => Task.FromResult<IGuildUser>(GetUser(id));
+        Task<IEnumerable<IUser>> IChannel.GetUsers()
+            => Task.FromResult<IEnumerable<IUser>>(Users);
+        Task<IUser> IChannel.GetUser(ulong id)
+            => Task.FromResult<IUser>(GetUser(id));
         Task IUpdateable.Update() 
             => Task.CompletedTask;
     }

src/Discord.Net/WebSocket/Entities/Channels/TextChannel.cs

@@ -1,6 +1,7 @@
 using Discord.API.Rest;
 using System;
 using System.Collections.Generic;
+using System.Collections.Immutable;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
@@ -17,6 +18,9 @@ namespace Discord.WebSocket
 
         /// <inheritdoc />
         public string Mention => MentionHelper.Mention(this);
+        public override IEnumerable<GuildUser> Users
+            => _permissions.Members.Where(x => x.Permissions.ReadMessages).Select(x => x.User).ToImmutableArray();
+        public IEnumerable<Message> CachedMessages => _messages.Messages;
 
         internal TextChannel(Guild guild, Model model)
             : base(guild, model)
@@ -39,27 +43,28 @@ namespace Discord.WebSocket
             await Discord.BaseClient.ModifyGuildChannel(Id, args).ConfigureAwait(false);
         }
 
-        protected override async Task<IEnumerable<GuildUser>> GetUsers()
+        /// <summary> Gets the message from this channel's cache with the given id, or null if none was found. </summary>
+        public Message GetCachedMessage(ulong id)
         {
-            var users = await Guild.GetUsers().ConfigureAwait(false);
-            return users.Where(x => PermissionUtilities.GetValue(PermissionHelper.Resolve(x, this), ChannelPermission.ReadMessages));
+            return _messages.Get(id);
         }
-
-        /// <inheritdoc />
-        public Task<Message> GetMessage(ulong id) { throw new NotSupportedException(); } //Not implemented
-        /// <inheritdoc />
+        /// <summary> Gets the last N messages from this message channel. </summary>
         public async Task<IEnumerable<Message>> GetMessages(int limit = DiscordConfig.MaxMessagesPerBatch)
         {
-            var args = new GetChannelMessagesParams { Limit = limit };
-            var models = await Discord.BaseClient.GetChannelMessages(Id, args).ConfigureAwait(false);
-            return models.Select(x => new Message(this, x));
+            return await _messages.Download(null, Direction.Before, limit).ConfigureAwait(false);
         }
-        /// <inheritdoc />
+        /// <summary> Gets a collection of messages in this channel. </summary>
         public async Task<IEnumerable<Message>> GetMessages(ulong fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
         {
-            var args = new GetChannelMessagesParams { Limit = limit };
-            var models = await Discord.BaseClient.GetChannelMessages(Id, args).ConfigureAwait(false);
-            return models.Select(x => new Message(this, x));
+            return await _messages.Download(fromMessageId, dir, limit).ConfigureAwait(false);
+        }
+
+        public override GuildUser GetUser(ulong id)
+        {
+            var member = _permissions.Get(id);
+            if (member != null && member.Value.Permissions.ReadMessages)
+                return member.Value.User;
+            return null;
         }
 
         /// <inheritdoc />
@@ -103,8 +108,10 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         public override string ToString() => $"{base.ToString()} [Text]";
 
-        async Task<IMessage> IMessageChannel.GetMessage(ulong id)
-            => await GetMessage(id).ConfigureAwait(false);
+        IEnumerable<IMessage> IMessageChannel.CachedMessages => CachedMessages;
+
+        Task<IMessage> IMessageChannel.GetCachedMessage(ulong id)
+            => Task.FromResult<IMessage>(GetCachedMessage(id));
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(int limit)
             => await GetMessages(limit).ConfigureAwait(false);
         async Task<IEnumerable<IMessage>> IMessageChannel.GetMessages(ulong fromMessageId, Direction dir, int limit)

src/Discord.Net/WebSocket/Entities/Channels/VoiceChannel.cs

@@ -12,6 +12,9 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         public int Bitrate { get; private set; }
 
+        public override IEnumerable<GuildUser> Users
+            => Guild.Users.Where(x => x.VoiceChannel == this);
+
         internal VoiceChannel(Guild guild, Model model)
             : base(guild, model)
         {
@@ -32,10 +35,12 @@ namespace Discord.WebSocket
             await Discord.BaseClient.ModifyGuildChannel(Id, args).ConfigureAwait(false);
         }
 
-        protected override async Task<IEnumerable<GuildUser>> GetUsers()
+        public override GuildUser GetUser(ulong id)
         {
-            var users = await Guild.GetUsers().ConfigureAwait(false);
-            return users.Where(x => PermissionUtilities.GetValue(PermissionHelper.Resolve(x, this), ChannelPermission.Connect));
+            var member = _permissions.Get(id);
+            if (member != null && member.Value.Permissions.ReadMessages)
+                return member.Value.User;
+            return null;
         }
 
         /// <inheritdoc />

src/Discord.Net/WebSocket/Entities/Guilds/Guild.cs

@@ -56,6 +56,7 @@ namespace Discord.WebSocket
         public Role EveryoneRole => GetRole(Id);
         /// <summary> Gets a collection of all roles in this guild. </summary>
         public IEnumerable<Role> Roles => _roles?.Select(x => x.Value) ?? Enumerable.Empty<Role>();
+        public IEnumerable<GuildUser> Users => Array.Empty<GuildUser>();
 
         internal Guild(DiscordClient discord, Model model)
         {

src/Discord.Net/WebSocket/Entities/Users/GuildUser.cs

@@ -22,6 +22,8 @@ namespace Discord.WebSocket
         public DateTime JoinedAt { get; private set; }
         /// <inheritdoc />
         public string Nickname { get; private set; }
+        /// <inheritdoc />
+        public VoiceChannel VoiceChannel { get; private set; }
 
         /// <inheritdoc />
         public IReadOnlyList<Role> Roles => _roles;
@@ -103,7 +105,7 @@ namespace Discord.WebSocket
 
         IGuild IGuildUser.Guild => Guild;
         IReadOnlyList<IRole> IGuildUser.Roles => Roles;
-        ulong? IGuildUser.VoiceChannelId => null;
+        IVoiceChannel IGuildUser.VoiceChannel => VoiceChannel;
 
         ChannelPermissions IGuildUser.GetPermissions(IGuildChannel channel)
             => GetPermissions(channel);

src/Discord.Net/WebSocket/MessageCache.cs

@@ -16,6 +16,8 @@ namespace Discord.WebSocket
         private readonly ConcurrentQueue<ulong> _orderedMessages;
         private readonly int _size;
 
+        public IEnumerable<Message> Messages => _messages.Select(x => x.Value);
+
         public MessageCache(DiscordClient discord, IMessageChannel channel)
         {
             _discord = discord;
@@ -51,13 +53,11 @@ namespace Discord.WebSocket
                 return result;
             return null;
         }
-        public async Task<IEnumerable<Message>> GetMany(ulong? fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
+        public IImmutableList<Message> GetMany(ulong? fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
         {
-            //TODO: Test heavily
-
             if (limit < 0) throw new ArgumentOutOfRangeException(nameof(limit));
             if (limit == 0) return ImmutableArray<Message>.Empty;
-            
+
             IEnumerable<ulong> cachedMessageIds;
             if (fromMessageId == null)
                 cachedMessageIds = _orderedMessages;
@@ -66,7 +66,7 @@ namespace Discord.WebSocket
             else
                 cachedMessageIds = _orderedMessages.Where(x => x > fromMessageId.Value);
 
-            var cachedMessages = cachedMessageIds
+            return cachedMessageIds
                 .Take(limit)
                 .Select(x =>
                 {
@@ -76,19 +76,28 @@ namespace Discord.WebSocket
                     return null;
                 })
                 .Where(x => x != null)
-                .ToArray();
+                .ToImmutableArray();
+        }
+
+        public async Task<IEnumerable<Message>> Download(ulong? fromMessageId, Direction dir, int limit = DiscordConfig.MaxMessagesPerBatch)
+        {
+            //TODO: Test heavily
+
+            if (limit < 0) throw new ArgumentOutOfRangeException(nameof(limit));
+            if (limit == 0) return ImmutableArray<Message>.Empty;
 
-            if (cachedMessages.Length == limit)
+            var cachedMessages = GetMany(fromMessageId, dir, limit);
+            if (cachedMessages.Count == limit)
                 return cachedMessages;
-            else if (cachedMessages.Length > limit)
-                return cachedMessages.Skip(cachedMessages.Length - limit);
+            else if (cachedMessages.Count > limit)
+                return cachedMessages.Skip(cachedMessages.Count - limit);
             else
             {
                 var args = new GetChannelMessagesParams
                 {
-                    Limit = limit - cachedMessages.Length,
+                    Limit = limit - cachedMessages.Count,
                     RelativeDirection = dir,
-                    RelativeMessageId = dir == Direction.Before ? cachedMessages[0].Id : cachedMessages[cachedMessages.Length - 1].Id
+                    RelativeMessageId = dir == Direction.Before ? cachedMessages[0].Id : cachedMessages[cachedMessages.Count - 1].Id
                 };
                 var downloadedMessages = await _discord.BaseClient.GetChannelMessages(_channel.Id, args).ConfigureAwait(false);
                 return cachedMessages.AsEnumerable().Concat(downloadedMessages.Select(x => new Message(_channel, x))).ToImmutableArray();