Clean Content Expanded (#212)

* Implement CleanContent In IMessage & RestMessage

* Update Spelling and Documentation

* Add SanatizeMessage to MessageHelper and Refactor Rest and Socket Message

src/Discord.Net.Core/Discord.Net.Core.xml

@@ -508,6 +508,11 @@
                 The user has set a custom status.
             </summary>
         </member>
+        <member name="F:Discord.ActivityType.Competing">
+            <summary>
+                The user is competing in a game.
+            </summary>
+        </member>
         <member name="T:Discord.CustomStatusGame">
             <summary>
                 A user's activity for their custom status.
@@ -7594,6 +7599,14 @@
                 A string that contains the body of the message; note that this field may be empty if there is an embed.
             </returns>
         </member>
+        <member name="P:Discord.IMessage.CleanContent">
+            <summary>
+                Gets the clean content for this message.
+            </summary>
+            <returns>
+                A string that contains the body of the message stripped of mentions, markdown, emojiis and pings; note that this field may be empty if there is an embed.
+            </returns>
+        </member>
         <member name="P:Discord.IMessage.Timestamp">
             <summary>
                 Gets the time this message was sent.
@@ -12920,10 +12933,20 @@
         <member name="M:Discord.Utils.UrlValidation.Validate(System.String)">
             <summary>
             Not full URL validation right now. Just ensures protocol is present and that it's either http or https
+            <see cref="M:Discord.Utils.UrlValidation.ValidateButton(System.String)"/> should be used for url buttons
             </summary>
             <param name="url">url to validate before sending to Discord.</param>
             <exception cref="T:System.InvalidOperationException">A URL must include a protocol (http or https).</exception>
             <returns>true if url is valid by our standard, false if null, throws an error upon invalid </returns>
         </member>
+        <member name="M:Discord.Utils.UrlValidation.ValidateButton(System.String)">
+            <summary>
+            Not full URL validation right now. Just Ensures the protocol is either http, https, or discord
+            <see cref="M:Discord.Utils.UrlValidation.Validate(System.String)"/> should be used everything other than url buttons
+            </summary>
+            <param name="url">the url to validate before sending to discord</param>
+            <exception cref="T:System.InvalidOperationException">A URL must include a protocol (either http, https, or discord).</exception>
+            <returns>true if the url is valid by our standard, false if null, throws an error upon invalid</returns>
+        </member>
     </members>
 </doc>

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

@@ -53,6 +53,13 @@ namespace Discord
         /// </returns>
         string Content { get; }
         /// <summary>
+        ///     Gets the clean content for this message.
+        /// </summary>
+        /// <returns>
+        ///     A string that contains the body of the message stripped of mentions, markdown, emojiis and pings; note that this field may be empty if there is an embed.
+        /// </returns>
+        string CleanContent { get; }
+        /// <summary>
         ///     Gets the time this message was sent.
         /// </summary>
         /// <returns>

src/Discord.Net.Rest/Discord.Net.Rest.xml

@@ -4299,6 +4299,9 @@
         <member name="P:Discord.Rest.RestMessage.Content">
             <inheritdoc />
         </member>
+        <member name="P:Discord.Rest.RestMessage.CleanContent">
+            <inheritdoc />
+        </member>
         <member name="P:Discord.Rest.RestMessage.CreatedAt">
             <inheritdoc />
         </member>

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

@@ -246,6 +246,12 @@ namespace Discord.Rest
             return System.Web.HttpUtility.UrlEncode(text);
 #endif
         }
+        public static string SanitizeMessage(IMessage message)
+        {
+            var newContent = MentionUtils.Resolve(message, 0, TagHandling.Sanitize, TagHandling.Sanitize, TagHandling.Sanitize, TagHandling.Sanitize, TagHandling.Sanitize);
+            newContent = Format.StripMarkDown(newContent);
+            return newContent;
+        }
 
         public static async Task PinAsync(IMessage msg, BaseDiscordClient client,
             RequestOptions options)

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

@@ -28,6 +28,9 @@ namespace Discord.Rest
         /// <inheritdoc />
         public string Content { get; private set; }
 
+        /// <inheritdoc />
+        public string CleanContent => MessageHelper.SanitizeMessage(this);
+
         /// <inheritdoc />
         public DateTimeOffset CreatedAt => SnowflakeUtils.FromSnowflake(Id);
         /// <inheritdoc />
@@ -208,7 +211,6 @@ namespace Discord.Rest
             else
                 _reactions = ImmutableArray.Create<RestReaction>();
         }
-
         /// <inheritdoc />
         public async Task UpdateAsync(RequestOptions options = null)
         {

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

@@ -39,7 +39,7 @@ namespace Discord.WebSocket
         public string Content { get; private set; }
 
         /// <inheritdoc />
-        public string CleanContent => SanitizeMessage();
+        public string CleanContent => MessageHelper.SanitizeMessage(this);
 
         /// <inheritdoc />
         public DateTimeOffset CreatedAt => SnowflakeUtils.FromSnowflake(Id);
@@ -144,8 +144,6 @@ namespace Discord.WebSocket
             if (model.Content.IsSpecified)
             {
                 Content = model.Content.Value;
-                //Update CleanContent Property
-                SanitizeMessage();
             }
 
             if (model.Application.IsSpecified)
@@ -272,12 +270,6 @@ namespace Discord.WebSocket
         /// <inheritdoc />
         IReadOnlyCollection<IStickerItem> IMessage.Stickers => Stickers;
 
-        internal string  SanitizeMessage()
-        {
-            var newContent = MentionUtils.Resolve(this, 0, TagHandling.Sanitize, TagHandling.Sanitize, TagHandling.Sanitize, TagHandling.Sanitize, TagHandling.Sanitize);
-            newContent = Format.StripMarkDown(newContent);
-            return newContent;
-        }
 
         internal void AddReaction(SocketReaction reaction)
         {