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index.js
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index.js
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const http = require('http')
const path = require('path')
const EventEmitter = require('events').EventEmitter
const url = require('url')
const util = require('util')
const templateCompiler = require('./libs/templateCompiler.js')
const fs = require('then-fs')
const htmlMinifier = require('html-minifier').minify
const WebSocketServer = require('uws').Server
const SocketWithOn = require('uws-with-on.js')
const Socket = require('socket.io-with-get')
const Big = require('big.js')
require('array-async-methods')
const contentTypes = {
'.js': 'text/javascript',
'.css': 'text/css',
'.json': 'application/json',
'.png': 'image/png',
'.jpg': 'image/jpg',
'.wav': 'audio/wav'
}
const basePageDir = 'front/page.html'
class App {
constructor() {
this.templates = {}
this.events = []
this.sockets = {}
this.saveSession = async (token, user) => {
throw 'no saveSession'
}
this.loadSession = async token => {}
this.isSession = async token => {}
this.baseCss = []
this.baseJs = []
this.rootPage = 'index'
this.staticFiles = [
'front/lib.js',
'front/route.js',
'front/socket-with-on-get.js',
'front/socket-with-on-get.min.js',
'front/array-async-method.js',
basePageDir
]
.map(filePath => {
return [
'/' + filePath,
[
contentTypes[path.extname(filePath)] || 'text/html',
fs.readFileSync(path.resolve(__dirname, filePath), 'binary')
]
]
})
.reduce((sum, [route, content]) => {
sum[route] = content
return sum
}, {})
this.errors = {
404: res => {
res.writeHead(404)
res.end(
'<!doctype html><html><head><meta charset="utf-8"></head><body>file not found<html><body>',
'utf-8'
)
},
500: res => {
res.writeHead(500)
res.end(
'<!doctype html><html><head><meta charset="utf-8"></head><body>Sorry, check with the site admin for error: ' +
error.code +
' ..\n<html><body>',
'utf-8'
)
}
}
this.server = http
.createServer((req, res) => {
const reqInfos = url.parse(req.url, true)
if (reqInfos.pathname in this.staticFiles) {
const [contentType, fileContent] = this.staticFiles[reqInfos.pathname]
res.setHeader('Content-Type', contentType)
res.setHeader('Cache-Control', 'only-if-cached, public, max-age=31536000')
res.statusCode = 200
res.end(fileContent, 'binary')
} else if (reqInfos.pathname in this.templates) {
const fileContent = this.templates[reqInfos.pathname]
res.setHeader('Content-Type', 'text/html')
res.setHeader('Cache-Control', 'only-if-cached, public, max-age=31536000')
res.statusCode = 200
res.write(fileContent, 'utf-8')
res.end()
} else {
const [contentType, fileContent] = this.staticFiles['/' + basePageDir]
res.setHeader('Content-Type', contentType)
res.setHeader('Cache-Control', 'only-if-cached, public, max-age=31536000')
res.statusCode = 200
res.write(fileContent, 'utf-8')
res.end()
}
})
.on('clientError', (err, socket) => {
socket.end('HTTP/1.1 400 Bad Request\r\n\r\n')
})
}
_addAllEventsToASocket(socket) {
this.events.forEach(([e, cb]) => socket.on(e, cb))
}
listen(port) {
this.server.listen(port)
const newId = async function(length, isUsed) {
const id = Big('9'.repeat(length))
.times(Math.random())
.times(Math.random())
.toFixed(0)
.toString()
try {
const isNotAlreadyUsed = await isUsed(id)
return (isNotAlreadyUsed && newId(length, isUsed)) || id.toString()
} catch (e) {
throw e
}
}
const wss = new WebSocketServer({server: this.server})
wss.on('connection', async originalSocket => {
const sock = new SocketWithOn(originalSocket)
const socket = new Socket(sock)
let clientId
sock.on('loadId', async receveidId => {
try {
if (
receveidId === null ||
!await this.isSession(Array.isArray(receveidId) ? receveidId[0] : receveidId)
) {
clientId = await newId(25, this.isSession)
this.sockets[clientId] = [socket]
await this.saveSession(clientId, null)
} else {
this.sockets[receveidId] = this.sockets[receveidId] || []
this.sockets[receveidId].push(socket)
clientId = receveidId
}
socket.clientId = clientId
sock.write('loadId', clientId)
originalSocket.on('close', () => {
if (clientId !== undefined) {
this.sockets[clientId].splice(this.sockets[clientId].indexOf(socket), 1)
}
})
this._addAllEventsToASocket(socket)
} catch (e) {
throw e
}
})
})
}
setTemplatesFolder(folder) {
this.templatesFolder = path.resolve(folder) + '/'
}
compileBasePage() {
this.staticFiles['/' + basePageDir] = [
contentTypes[path.extname(basePageDir)] || 'text/html',
new Function(
'baseCSS',
'baseJS',
'return `' + fs.readFileSync(path.resolve(__dirname, basePageDir), 'utf8') + '`'
)(this.baseCss, this.baseJs)
]
}
setBaseCss(routes) {
if (routes.length > 0) {
this.baseCss = routes
this.compileBasePage()
}
}
setBaseJs(route) {
if (route.length > 0) {
this.baseJs = route
this.compileBasePage()
}
}
addStaticFolder(folder) {
const getAllFilesFromFolder = function(dir) {
var results = []
fs.readdirSync(dir).forEach(function(file) {
file = dir + '/' + file
const stat = fs.statSync(file)
if (stat && stat.isDirectory()) {
results = results.concat(getAllFilesFromFolder(file))
} else results.push(file)
})
return results
}
folder = path.resolve(folder + '/')
getAllFilesFromFolder(folder)
.map(e => [e.substr(folder.length), e])
.map(([r, filePath]) => {
return [
r,
[
contentTypes[path.extname(filePath)] || 'text/html',
fs.readFileSync(path.resolve(__dirname, filePath), 'binary')
]
]
})
.forEach(([route, content]) => {
this.staticFiles[route] = content
})
}
on(fileName, cb, realFileName) {
if (fileName === this.rootPage) this.on('', cb, this.rootPage)
realFileName = typeof realFileName === 'undefined' ? fileName : realFileName
this.templates['/' + fileName + '.tpl'] = htmlMinifier(
fs
.readFileSync(this.templatesFolder + realFileName + '.html', 'utf8')
.replace(
/action="([^"]+)/g,
(m, uri) => `onsubmit="return handleFormSend(this, \\'${uri}\\')`
)
.replace(
/href="([^"]+)/g,
(m, uri) => `href="${uri}" onclick="loadPage(\\'${uri}\\'); return false;`
)
.replace(
/<title>([^\<]+)<\/title>/g,
(m, title) => `<script>setTitle(${JSON.stringify(title)})</script>`
),
{collapseWhitespace: true}
)
let self = this
const exec = async function(fn, args, next) {
const user = await self.loadSession(this.clientId)
let includes = []
const include = uri => {
includes.push(uri)
return {}
}
let dt = (await fn({form: args, include, user})) || {}
await self.saveSession(this.clientId, user)
if ('redirect' in dt) {
next({redirect: dt.redirect})
} else {
await includes.forEachA(async uri => {
await self.events
.filter(([fileName, cb]) => fileName === uri)[0][1]
.call(this, args, data => {
if (data !== undefined && data !== null) {
Object.assign(dt, data)
}
})
})
next(dt)
}
}
const intercept = async function(args, resolve, reject) {
return await exec.call(this, cb, args, resolve)
}
Object.values(this.sockets).forEach(socket => socket.on(fileName, intercept))
this.events.push([fileName, intercept])
}
}
module.exports = new App()