Added support for reaction 'me' field

src/Discord.Net.Core/Entities/Messages/IUserMessage.cs

@@ -14,7 +14,7 @@ namespace Discord
         Task UnpinAsync(RequestOptions options = null);
 
         /// <summary> Returns all reactions included in this message. </summary>
-        IReadOnlyDictionary<Emoji, int> Reactions { get; }
+        IReadOnlyDictionary<Emoji, ReactionMetadata> Reactions { get; }
 
         /// <summary> Adds a reaction to this message. </summary>
         Task AddReactionAsync(Emoji emoji, RequestOptions options = null);

src/Discord.Net.Core/Entities/Messages/ReactionMetadata.cs

@@ -0,0 +1,11 @@
+namespace Discord
+{
+    public struct ReactionMetadata
+    {
+        /// <summary> Gets the number of reactions </summary>
+        public int ReactionCount { get; internal set; }
+
+        /// <summary> Returns true if the current user has used this reaction </summary>
+        public bool IsMe { get; internal set; }
+    }
+}

src/Discord.Net.Rest/Entities/Messages/RestUserMessage.cs

@@ -29,7 +29,7 @@ namespace Discord.Rest
         public override IReadOnlyCollection<ulong> MentionedRoleIds => MessageHelper.FilterTagsByKey(TagType.RoleMention, _tags);
         public override IReadOnlyCollection<RestUser> MentionedUsers => MessageHelper.FilterTagsByValue<RestUser>(TagType.UserMention, _tags);
         public override IReadOnlyCollection<ITag> Tags => _tags;
-        public IReadOnlyDictionary<Emoji, int> Reactions => _reactions.ToDictionary(x => x.Emoji, x => x.Count);
+        public IReadOnlyDictionary<Emoji, ReactionMetadata> Reactions => _reactions.ToDictionary(x => x.Emoji, x => new ReactionMetadata { ReactionCount = x.Count, IsMe = x.Me });
 
         internal RestUserMessage(BaseDiscordClient discord, ulong id, IMessageChannel channel, IUser author)
             : base(discord, id, channel, author)

src/Discord.Net.Rpc/Entities/Messages/RpcUserMessage.cs

@@ -29,7 +29,7 @@ namespace Discord.Rpc
         public override IReadOnlyCollection<ulong> MentionedRoleIds => MessageHelper.FilterTagsByKey(TagType.RoleMention, _tags);
         public override IReadOnlyCollection<ulong> MentionedUserIds => MessageHelper.FilterTagsByKey(TagType.UserMention, _tags);
         public override IReadOnlyCollection<ITag> Tags => _tags;
-        public IReadOnlyDictionary<Emoji, int> Reactions => ImmutableDictionary.Create<Emoji, int>();
+        public IReadOnlyDictionary<Emoji, ReactionMetadata> Reactions => ImmutableDictionary.Create<Emoji, ReactionMetadata>();
 
         internal RpcUserMessage(DiscordRpcClient discord, ulong id, RestVirtualMessageChannel channel, RpcUser author)
             : base(discord, id, channel, author)

src/Discord.Net.WebSocket/Entities/Messages/SocketUserMessage.cs

@@ -30,7 +30,7 @@ namespace Discord.WebSocket
         public override IReadOnlyCollection<SocketGuildChannel> MentionedChannels => MessageHelper.FilterTagsByValue<SocketGuildChannel>(TagType.ChannelMention, _tags);
         public override IReadOnlyCollection<SocketRole> MentionedRoles => MessageHelper.FilterTagsByValue<SocketRole>(TagType.RoleMention, _tags);
         public override IReadOnlyCollection<SocketUser> MentionedUsers => MessageHelper.FilterTagsByValue<SocketUser>(TagType.UserMention, _tags);
-        public IReadOnlyDictionary<Emoji, int> Reactions => _reactions.GroupBy(r => r.Emoji).ToDictionary(x => x.Key, x => x.Count());
+        public IReadOnlyDictionary<Emoji, ReactionMetadata> Reactions => _reactions.GroupBy(r => r.Emoji).ToDictionary(x => x.Key, x => new ReactionMetadata { ReactionCount = x.Count(), IsMe = x.Any(y => y.UserId == Discord.CurrentUser.Id) });
 
         internal SocketUserMessage(DiscordSocketClient discord, ulong id, ISocketMessageChannel channel, SocketUser author)
             : base(discord, id, channel, author)