added a warning message if the message is empty

Author: PawBud

.DS_Store

@@ -20,12 +20,15 @@ func (c *client) readInput() {
 		if err != nil {
 			return
 		}
-
 		msg = strings.Trim(msg, "\r\n")
-
 		args := strings.Split(msg, " ")
 		cmd := strings.TrimSpace(args[0])
-
+		//make sure that the length of the input is at least 1
+		if len(args) == 1 && args[0] != "/help" && args[0] != "/rooms" {
+			c.err(fmt.Errorf("Cannot pass empty characters after the commands except the help command.\n" +
+				"Example of a valid Command: /msg Once upon a time in a far far away galaxy" +
+				"\n"))
+		}
 		switch cmd {
 		case "/nick":
 			c.commands <- command{

chat/chat

@@ -50,7 +50,11 @@ func (s *server) newClient(conn net.Conn) {
 }
 
 func (s *server) nick(c *client, nick string) {
-	c.nick = nick
+	if nick != "" {
+		c.nick = nick
+	} else {
+		log.Printf("Bc error hogga\n")
+	}
 	c.msg(fmt.Sprintf("all right, I will call you %s", nick))
 }