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index.js
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index.js
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'use strict'
const fs = require('fs')
const path = require('path')
const child_process = require('child_process')
const stringifyHtmlFiles = require('./lib/stringifyHtmlFiles')
const createFilesObj = require('./lib/createFilesObj')
const hashFilesObj = require('./lib/hashFilesObj')
const writeJsUL = require('./lib/writeJsUL')
const replaceHtml = require('./lib/replaceHtml')
const addStatusBar = require('./lib/addStatusBar')
const writeNewHtml = require('./lib/writeNewHtml')
const botGenerator = require(('./src/botGenerator'))
/**
* @param {Object} options
* siteUrl: String (required)
* assetsPath: String|Array (required)
* assetsRoute: String|Array (required)
* routes: Object (required)
* userCount: Number (optional - defaults to 10)
* wfPath: String (optional - defaults to '/wfPath')
* wfRoute: String (optional - defaults to '/wfRoute')
* seedScript: String (optional - defaults to 'wf-seed.js')
* statusBar: Boolean (optional - defaults to true)
*
* @param {string} serverRoot - path to root folder
*/
function WebFlight (options, serverRoot) {
Object.keys(options).forEach((key) => {
this[key] = options[key]
})
let fileNamesArr = Object.keys(this.routes).map((file) => {
return path.basename(this.routes[file])
})
this.count = 0 // non-configurable
this.active = false // non-configurable
this.fileNames = fileNamesArr // non-configurable
this.wfPath = options.wfPath || path.join(serverRoot, '/wfPath') // default
// TODO: existsSync is deprecated, need alternative
if (!fs.existsSync(this.wfPath)) {
fs.mkdirSync(this.wfPath)
fs.mkdirSync(path.join(this.wfPath, 'js'))
}
this.wfRoute = options.wfRoute || ('/wfRoute') // default
this.seedScript = options.seedScript || path.join(this.wfPath, 'js/wf-seed.js') // default
this.jsOutputDL = fileNamesArr.map((file) => { // non-configurable
file = path.basename(file, '.html')
return `${this.wfPath}/js/${file}-download.js`
})
this.htmlOutput = fileNamesArr.map((file) => { // non-configurable
return `${this.wfPath}/wf-${file}`
})
this.userCount = options.userCount || 5 // default (redirect)
this.prepCount = Math.floor(this.userCount * 0.75) // non-configurable (start bots)
this.stopCount = Math.floor(this.userCount * 0.50) // non-configurable (kill bots, redirect back)
this.statusBar = options.statusBar || true // default
console.log('wfobj', this)
if (!this.siteUrl) console.error('Error: WebFlight options object requires "siteUrl" property')
if (!this.assetsPath) console.error('Error: WebFlight options object requires "assetsPath" property')
if (!this.assetsRoute) console.error('Error: WebFlight options object requires "assetsRoute" property')
if (!this.routes) console.error('Error: WebFlight options object requires "routes" property')
}
WebFlight.prototype.init = function () {
const htmlFiles = Object.keys(this.routes).map((route) => {
return this.routes[route]
})
const htmlStrings = stringifyHtmlFiles(htmlFiles)
const filesObj = createFilesObj(this.assetsPath, this.assetsRoute)
if (this.statusBar) {
hashFilesObj(filesObj)
.then(writeJsUL.bind(null, this.seedScript, this.siteUrl, this.stopCount))
.then(replaceHtml.bind(null, htmlStrings, htmlFiles))
.then(addStatusBar.bind(null))
.then(writeNewHtml.bind(null, this.htmlOutput))
} else {
hashFilesObj(filesObj)
.then(writeJsUL.bind(null, this.seedScript, this.siteUrl, this.stopCount))
.then(replaceHtml.bind(null, htmlStrings, htmlFiles))
.then(writeNewHtml.bind(null, this.htmlOutput))
}
}
WebFlight.prototype.redirect = function (req, res, next) {
const destination = req.originalUrl
if (this.routes[destination]) {
res.sendFile(`/${this.wfPath}/wf-${path.basename(this.routes[destination])}`)
} else {
next()
}
}
WebFlight.prototype.start = function () {
child_process.exec('export DISPLAY=\'0:99\'')
child_process.exec('Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &')
botGenerator(this.seedScript)
this.active = true
}
WebFlight.prototype.watch = function (req, res, next) {
const destination = req.originalUrl
if (path.extname(destination) === '.html' || path.extname(destination) === '') {
++this.count
setTimeout(function () { --this.count }.bind(this), 20000)
}
if (destination === '/count.check.4wf') return res.send({count: this.count})
if (destination === '/bots.no.longer.seeding.4wf') {
this.active = false
console.log('bots ending redirect')
}
if (!this.active && this.count > this.prepCount) this.start()
if (this.count > this.userCount) return this.redirect(req, res, next)
next()
}
module.exports = WebFlight