Defined session manager to send/receive messages

BlazorWebassemblyI18n/IMessage.cs

@@ -0,0 +1,9 @@
+using System.Threading.Tasks;
+
+namespace BlazorWebassemblyI18n
+{
+    public interface IMessage
+    {
+        public Task ReceiveMessage(string message);
+    }
+}

BlazorWebassemblyI18n/SessionManager.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace BlazorWebassemblyI18n
+{
+    public sealed class SessionManager : IMessage
+    {
+        private readonly List<IMessage> receivers = new();
+
+        internal SessionManager()
+        {
+            this.Register(this);
+        }
+        
+        public void Register(IMessage receiver) => this.receivers.Add(receiver);
+
+        public async Task SendMessage(string content)
+        {
+            foreach (var receiver in this.receivers)
+                await receiver.ReceiveMessage(content);
+        }
+
+        public Task ReceiveMessage(string message)
+        {
+            Console.WriteLine($"sending message: '{message}'");
+            return Task.CompletedTask;
+        }
+    }
+}