1 files changed, 22 insertions, 0 deletions
diff --git a/cmd_nick.go b/cmd_nick.go
new file mode 100644
index 0000000..ad68cc6
--- /dev/null
+++ b/cmd_nick.go
@@ -0,0 +1,22 @@
+package main
+
+func init() {
+	commandHandlers["NICK"] = handleClientNick
+}
+
+func handleClientNick(msg RMsg, client *Client) bool {
+	if len(msg.Params) < 1 {
+		client.Send(MakeMsg(self, ERR_NEEDMOREPARAMS, "NICK", "Not enough parameters"))
+		return true
+	}
+	_, exists := nickToClient.LoadOrStore(msg.Params[0], client)
+	if exists {
+		client.Send(MakeMsg(self, ERR_NICKNAMEINUSE, client.Nick, msg.Params[0], "Nickname is already in use"))
+	} else {
+		client.Nick = msg.Params[0]
+		if client.State == ClientStateRegistered {
+			client.Send(MakeMsg(client, "NICK", msg.Params[0]))
+		}
+	}
+	return true
+}