node phantomjs seo running via node write the file - node.js

Question

I'm wondering if this is the write way:
node.js
var fs = require('fs');
var path = require('path');
var childProcess = require('child_process');
var phantomjs = require('phantomjs');
var binPath = phantomjs.path;
var childArgs = [
path.join(__dirname, 'phantomjs-runner.js'),
'http://localhost:3000'
]
childProcess.execFile(binPath, childArgs, function(err, stdout, stderr) {
if(err){
}
if(stderr){
}
fs.writeFile(__dirname+'/public/snapshots/index.html', stdout, function(err) {
if(err) {
console.log(err);
}
else {
console.log("The file was saved!");
}
});
});
phantomjs-runner.js
var system = require('system');
var url = system.args[1] || '';
if(url.length > 0) {
var page = require('webpage').create();
page.open(url, function (status) {
if (status == 'success') {
var delay, checker = (function() {
var html = page.evaluate(function () {
var body = document.getElementsByTagName('body')[0];
if(body.getAttribute('data-status') == 'ready') {
return document.getElementsByTagName('html')[0].outerHTML;
}
});
if(html) {
clearTimeout(delay);
console.log(html);
phantom.exit();
}
});
delay = setInterval(checker, 100);
}
});
}
may be could be a better way like
clearTimeout(delay);
fs.writeFile
phantom.exit();
How can I manage ie
different urls and different files
I mean
http://localhost:3000 index.html
http://localhost:3000/blog blog.html
http://localhost:3000/blog/postid postid.html
ENDED UP
'use strict';
var fs = require('fs'),
path = require('path'),
childProcess = require('child_process'),
phantomjs = require('phantomjs'),
binPath = phantomjs.path,
config = require('../config/config');
var env = (process.env.NODE_ENV === 'production') ? 'production' : null,
currentPath = (env) ? config.proot + '/build/default/snapshots' : config.proot + '/default/snapshots';
function normalizeUrl(url){
if( (typeof url === 'undefined') || !url){
return '';
}
if ( url.charAt( 0 ) === '/' ){
url = url.substring(1);
}
return '/'+url.replace(/\/$/, "");
}
function normalizePage(route){
if(!route){
return 'index';
}
var chunks = route.substring(1).split('/');
var len = chunks.length;
if(len===1){
return chunks[0];
}
chunks.shift();
//I get the id
return chunks[0];
}
module.exports = function (url) {
var route = normalizeUrl(url);
var page = normalizePage(route);
var childArgs = [
path.join(__dirname, './phantomjs-runner.js'),
config.url+route
];
childProcess.execFile(binPath, childArgs, function(err, stdout, stderr) {
if(err){
}
if(stderr){
}
fs.writeFile(currentPath + '/' + page + '.html', stdout, function(err) {
if(err) {
console.log(err);
}
else {
console.log("The file was saved!");
}
});
});
};
So I worked out for the parameters I'm still
waiting for way to get the output ^^