var flag = "REDACTED";

var fs = require('fs');
var express = require('express');
var app = express();

app.listen(8080);

app.get('/', function(req, res){
	reply(res, "");
});

function reply(res, text){
	fs.readFile('lol.js', function(err, data){
		if(text) text = text + "\n\n---\n\n";
		res.header("Content-Type", "text/plain");
		res.send(text + (data + '').replace(flag, "REDACTED"));
	});
}

/*
 * Usage: https://loljs.hamclock.net/x/y/z
 */
function getFlag(x, y, z){
	var lolarray = [-Infinity, -1, 0, 1, Infinity];
	x = lolarray[x];
	if(Math.max(-1, x) != Math.max(-1, x) && x == x    && !isFinite(x)
	&& y == true                          && y == 1    && y !== 1
	&& 'hello'.charAt(z) != 'hello'[z]    && z != true && Math.max(z, null) === 0
	)
		return "FLAG = " + flag;
	else
		return "Try again.";
}

app.get('/:x/:y/:z', function(req, res){
	try{
		var x = JSON.parse(req.params.x);
		var y = JSON.parse(req.params.y);
		var z = JSON.parse(req.params.z);
		reply(res, getFlag(x, y, z));
	}catch(e){
		reply(res, "JSON parse error");
	}
});