Add gateway intent for reading messages

FishBot/Program.cs

@@ -11,11 +11,16 @@ class Program
 
 	public static async Task Main()
 	{
-        var _config = new DiscordSocketConfig { MessageCacheSize = 100 };
+        var _config = new DiscordSocketConfig
+		{
+			MessageCacheSize = 100,
+			GatewayIntents = GatewayIntents.AllUnprivileged | GatewayIntents.MessageContent
+		};
         _client = new DiscordSocketClient(_config);
 
 		_client.Log += Log;
         _client.MessageUpdated += MessageUpdated;
+		_client.MessageReceived += MessageReceived;
 
 		//  You can assign your bot token to a string, and pass that in to connect.
 		//  This is, however, insecure, particularly if you plan to have your code hosted in a public repository.
@@ -37,7 +42,16 @@ private static Task Log(LogMessage msg)
 		Console.WriteLine(msg.ToString());
 		return Task.CompletedTask;
 	}
-
+
+	private static async Task MessageReceived(SocketMessage message)
+    {
+        // Ensure we don't process system messages
+        if (message is not SocketUserMessage userMessage)
+            return;
+
+        Console.WriteLine($"{userMessage.Author}: {userMessage.Content}");
+    }
+
     private static async Task MessageUpdated(Cacheable<IMessage, ulong> before, SocketMessage after, ISocketMessageChannel channel)
     {
         // If the message was not in the cache, downloading it will result in getting a copy of `after`.