#include "Part.hpp"
#include "../IRC.hpp"
#include <string>
#include <sstream>

Part::Part() {}

Part::~Part() {}

bool	Part::validate(const User &user, const std::string &msg)
{
	size_t				pos;
	size_t				leng;
	std::istringstream	iss(msg);
	std::string			iter;
	
	iss >> iter; //iter will be PART, which we already know
	iss >> iter; //iter will be The channel that the user is leaving
	if (iter[0] == '#') // If the string starts with a # it is a channel
	{
		this->targetChannel = IRCManager::getChannelByName(iter); // identify channel
		if (!this->targetChannel)
		{
			std::cout << "Channel " + iter + " Does not exist, maybe we should send something back?"; // Not sure what is the proper response here, for now we print
			return false; // return false to Dmitry
		}
		else // The channel exists
		{
			if (!IRCManager::checkChannelMember(user, iter)) // check if the user is part of the channel
			{
				std::cout << user.getUserName() + " is not a member of " + iter + " So we would be leaving nothing";
				return false;
			}
		}
	}
	else
	{
		std::cout << "You can't part with a user, you can only part with channels" << std::endl;
		return (false);
	}
	
	leng = msg.length(); // get the length of the message
	pos = msg.find(":") + 1; // get position of the reason
	this->reason = msg.substr(pos, leng - pos); // store the reason
	return true;
}

int Part::run(User &user, IRC::t_send_f &send)
{
	std::istringstream	iss(targetChannel->getUserList());
	std::string			target;

	iss >> target;
	while (target[0])
	{
		send(IRCManager::getUserFromName(target), user.getNickName() + user.getHostName() + " PART " + this->targetChannel->getChannelName() + " " + this->reason);
		iss >> target;
	}
	this->targetChannel->removeUser(user);
	return (0);
}