from paircd.client import Client
from paircd.command_handler import CommandHandler
from paircd.message import Message
from paircd.server import Server


class NickHandler(CommandHandler):
    def __init__(self) -> None:
        super().__init__("NICK", 1)

    async def handle(self, server: Server, client: Client, msg: Message) -> None:
        nickname = msg.args[0]

        # Remove stale references if they exist
        if client.nickname:
            server.remove_client_by_name(client.nickname)
            for channel_name in client.channels:
                channel = server.get_channel_by_name(channel_name)
                channel.remove_client_by_nick(client.nickname)

        client.nickname = nickname

        # Add references for client
        server.add_client(client)
        for channel_name in client.channels:
            channel = server.get_channel_by_name(channel_name)
            channel.remove_client_by_nick(client.nickname)

        if client.username and client.realname:
            client.registered = True
            client.log("registered")