MessageBoard: Add persistence to chat messages.

Scrummer/Code/BusinessLogic/MessageBoard.cs

@@ -6,8 +6,26 @@ namespace Scrummer.Code.BusinessLogic
 {
     public class MessageBoard
     {
+        #region Declarations
+
         private List<Message> _messages = new List<Message>();
-        private int lastIDMessage = 0;
+        private int _lastIDMessage = 0;
+
+        private int _idBoard = 0;
+
+        #endregion
+
+        #region Life cycle
+
+        public MessageBoard(int idBoard)
+        {
+            _idBoard = idBoard;
+            LoadData();
+        }
+
+        #endregion 
+
+        #region Public methods
 
         public List<Message> Messages_GetList(int idMessage)
         {
@@ -19,24 +37,53 @@ namespace Scrummer.Code.BusinessLogic
                 {
                     listMessages.Insert(0, msg);
                 }
-                else
-                {
-                    break;
-                }
+                else { break; }
             }
             return listMessages;
         }
 
         public void Message_Add(string userName, string text)
         {
-            lastIDMessage++;
-            Message msg = new Message();
-            msg.IDMessage = lastIDMessage;
-            msg.UserName = userName;
-            msg.Text = text;
-            msg.Date = DateTime.UtcNow;
-            _messages.Insert(0, msg);
+            lock (_messages)
+            {
+                _lastIDMessage++;
+                Message msg = new Message();
+                msg.IDMessage = _lastIDMessage;
+                msg.UserName = userName;
+                msg.Text = text;
+                msg.Date = DateTime.UtcNow;
+                _messages.Insert(0, msg);
+                SaveData();
+            }
         }
+
+        #endregion
+
+        #region Private methods
+
+        #region Persistence
+
+        private const string PersistenceFile = "priv/messageBoard.{0}.json";
+
+        private void LoadData()
+        {
+            _messages = Persistence.LoadList<Message>(String.Format(PersistenceFile, _idBoard));
+            _lastIDMessage = 0;
+            if (_messages.Count > 0)
+            {
+                _lastIDMessage = _messages[0].IDMessage;
+            }
+        }
+
+        private void SaveData()
+        {
+            Persistence.SaveList(String.Format(PersistenceFile, _idBoard), _messages);
+        }
+
+        #endregion
+
+        #endregion
+
     }
 
 }

Scrummer/Code/Controls/ChatHandler.cs

@@ -51,6 +51,18 @@ namespace Scrummer.Code
             bool mustWait = (timePoolData > 0);
             do
             {
+                if (_chatBoards.ContainsKey(idBoard) == false)
+                {
+                    lock (_chatBoards)
+                    {
+                        if (_chatBoards.ContainsKey(idBoard) == false)
+                        {
+                            messageBoard = new MessageBoard(idBoard);
+                            _chatBoards[idBoard] = messageBoard;
+                        }
+                    }
+                }
+
                 if (_chatBoards.ContainsKey(idBoard))
                 {
                     messageBoard = _chatBoards[idBoard];
@@ -86,7 +98,7 @@ namespace Scrummer.Code
                 }
                 else
                 {
-                    messageBoard = new MessageBoard();
+                    messageBoard = new MessageBoard(idBoard);
                     _chatBoards[idBoard] = messageBoard;
                 }
                 messageBoard.Message_Add(userName, text);