Added roomstate message type

TwitchIrcClient/IRC/Messages/Roomstate.cs

@@ -0,0 +1,96 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Linq;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading.Tasks;
+using TwitchLogger.IRC;
+using TwitchLogger.IRC.Messages;
+
+namespace TwitchIrcClient.IRC.Messages
+{
+    public class Roomstate : ReceivedMessage
+    {
+        /// <summary>
+        /// A Boolean value that determines whether the chat room allows only messages with emotes.
+        /// </summary>
+        public bool EmoteOnly
+        { get
+            {
+                var value = TryGetTag("emote-only");
+                if (value == "1")
+                    return true;
+                if (value == "0")
+                    return false;
+                throw new InvalidDataException($"tag \"emote-only\" does not have a proper value: {value}");
+            }
+        }
+        /// <summary>
+        /// An integer value that determines whether only followers can post messages in the chat room.
+        /// The value indicates how long, in minutes, the user must have followed the broadcaster before
+        /// posting chat messages. If the value is -1, the chat room is not restricted to followers only.
+        /// </summary>
+        public int FollowersOnly
+        { get
+            {
+                var value = TryGetTag("followers-only");
+                if (!int.TryParse(value, out int result))
+                    throw new InvalidDataException();
+                return result;
+            }
+        }
+        /// <summary>
+        /// A Boolean value that determines whether a user’s messages must be unique.
+        /// Applies only to messages with more than 9 characters.
+        /// </summary>
+        public bool UniqueMode
+        { get
+            {
+                var value = TryGetTag("r9k");
+                if (value == "1")
+                    return true;
+                if (value == "0")
+                    return false;
+                throw new InvalidDataException($"tag \"r9k\" does not have a proper value: {value}");
+            }
+        }
+        /// <summary>
+        /// An ID that identifies the chat room (channel).
+        /// </summary>
+        public string RoomId => TryGetTag("room-id");
+        /// <summary>
+        /// An integer value that determines how long, in seconds, users must wait between sending messages.
+        /// </summary>
+        public int Slow
+        { get
+            {
+                string value = TryGetTag("slow");
+                if (!int.TryParse(value, out int result))
+                    throw new InvalidDataException($"tag \"slow\" does not have a proper value: {value}");
+                return result;
+            }
+        }
+        /// <summary>
+        /// A Boolean value that determines whether only subscribers and moderators can chat in the chat room.
+        /// </summary>
+        public bool SubsOnly
+        { get
+            {
+                var value = TryGetTag("subs-only");
+                if (value == "1")
+                    return true;
+                if (value == "0")
+                    return false;
+                throw new InvalidDataException($"tag \"subs-only\" does not have a proper value: {value}");
+            }
+        }
+        public Roomstate(ReceivedMessage other) : base(other)
+        {
+            Debug.Assert(MessageType == IrcMessageType.ROOMSTATE,
+                $"{nameof(Roomstate)} must have type {IrcMessageType.ROOMSTATE}" +
+                $" but has {MessageType}");
+        }
+    }
+}