add basic app

Chatter/Service/MessageService.cs

@@ -0,0 +1,49 @@
+using Chatter.Models;
+using Chatter.Repository;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Chatter.Service
+{
+    public interface IMessageService
+    {
+        IEnumerable<MessageModel> GetMessages();
+
+        void AddMessage(PostModel msg);
+    }
+
+
+    internal class MessageService : IMessageService
+    {
+        public readonly IMessageRepository _repository;
+
+        public MessageService()
+        {
+            _repository = new MessageRepository();
+        }
+
+        public IEnumerable<MessageModel> GetMessages()
+        {
+            var messages = _repository.GetMessages();
+            return messages.Select(x => new MessageModel()
+            {
+                CreateDate = x.CreateDate,
+                Text = x.Text,
+                User = x.User
+            });
+        }
+
+        public void AddMessage(PostModel msg)
+        {
+            _repository.AddMessage(new Dto.MessageDto()
+            {
+                Text = msg.Text,
+                User = null,
+                CreateDate = DateTime.Now
+            });
+        }
+    }
+}