/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   nick.cpp                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: aortigos <aortigos@student.42malaga.com    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/05/10 22:06:22 by aortigos          #+#    #+#             */
/*   Updated: 2026/05/15 23:04:35 by aortigos         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../Server/Server.hpp"


static bool isValidNick(const std::string &nick)
{
	const std::string special = "[]\\`_^{|}";

	if (!isalpha(nick[0]) && special.find(nick[0]) == std::string::npos)
		return (false);
	for (size_t i = 1; i < nick.size(); i++)
	{
		if (!isalnum(nick[i]) && special.find(nick[i]) == std::string::npos && nick[i] != '-')
			return (false);
	}
	return (true);
}

void	Server::nick_cmd(User &client, std::istringstream &ss)
{
	std::string		args;

	ss >> args;
	if (!client.isAuthenticated()) return (client.send(":" SERVER_NAME " 451 * :You have not registered\r\n"));
	if (args.empty()) return (client.send(":" SERVER_NAME " 431 * :Not nickname given\r\n"));
	if (!isValidNick(args)) return (client.send(":" SERVER_NAME " 432 * " + args + " :Erroneous nickname\r\n"));
	for (std::map<int, User>::iterator it = clients_.begin(); it != clients_.end(); it++)
	{
		if (it->second.getNick() == args)
			return (client.send(":" SERVER_NAME " 433 * " + args + " :Nickname is already in use\r\n"));
	}
	
	std::string oldNick = client.getNick();
	client.setNick(args);

	if (client.isRegistered())
	{
		// Change nick to an already registered user
		// Send message to his channels
		//client.broadcast(":" + oldNick + "!~" + client.getUsername() + "@hostt NICK " + args + "\r\n");
		return ;
	}

	if (!client.getUsername().empty())
	{
		client.setRegistered(true);
		client.send(":" SERVER_NAME " 001 " + args + " :Welcome to the IRC Network " + args + "\r\n");
		client.send(":" SERVER_NAME " 002 " + args + " :Your host is " SERVER_NAME ", running version 1.0\r\n");
		client.send(":" SERVER_NAME " 003 " + args + " :This server was created May 2026\r\n");
		client.send(":" SERVER_NAME " 004 " + args + " :" SERVER_NAME " 1.0\r\n");
	}
}