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index.js
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index.js
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'use strict'
const GitHubApi = require('github')
const Promise = require('bluebird')
const bodyParser = require('body-parser')
const crypto = require('crypto')
const express = require('express')
const fs = Promise.promisifyAll(require('fs'))
const npm = require('npm')
const path = require('path')
const app = express()
const github = new GitHubApi({
version: '3.0.0',
headers: {
'User-Agent': 'electron-prebuilt-updater'
}
})
const apiKey = process.env.API_KEY
const email = process.env.EMAIL
const owner = process.env.OWNER
const repo = process.env.REPO
const secret = process.env.SECRET
const token = process.env.TOKEN
Promise.longStackTraces()
app.use(bodyParser.json())
app.set('port', (process.env.PORT || 5000))
app.post('/', function (req, res) {
let hubSignature = req.headers['x-hub-signature'].replace('sha1=', '')
let signature = crypto.createHmac('sha1', secret)
.update(JSON.stringify(req.body))
.digest('hex')
if (req.body.release && signature === hubSignature) {
let createReleaseAsync = Promise.promisify(github.releases.createRelease)
let getContentAsync = Promise.promisify(github.repos.getContent)
let updateFileAsync = Promise.promisify(github.repos.updateFile)
let newVersion = req.body.release.tag_name.replace('v', '')
let npmrc = path.resolve(process.env.HOME, '.npmrc')
github.authenticate({ type: 'oauth', token: token })
getContentAsync({
user: owner,
repo: repo,
path: 'package.json'
})
.catch(function (err) {
console.error('Failed to get remote file: package.json')
throw err
})
.then(function (file) {
let content = JSON.parse(new Buffer(file.content, 'base64').toString())
content.version = newVersion
return updateFileAsync({
user: owner,
repo: repo,
path: 'package.json',
message: `Update to Electron v${newVersion}`,
content: new Buffer(JSON.stringify(content, null, ' '))
.toString('base64'),
sha: file.sha
})
.catch(function (err) {
console.error('Failed to update remote file: package.json')
throw err
})
})
.then(function () {
return fs.statAsync(npmrc)
})
.catch(function (err) {
if (err.code === 'ENOENT') return null
else {
console.error(`Failed to stat file: ${npmrc}`)
throw err
}
})
.then(function (stat) {
if (!stat) {
let content = `_auth=${apiKey}\nemail=${email}`
return fs.writeFileAsync(npmrc, content)
.catch(function (err) {
console.error(`Failed to write file: ${npmrc}`)
throw err
})
}
})
.then(function () {
return createReleaseAsync({
owner: owner,
repo: repo,
tag_name: `v${newVersion}`,
name: `v${newVersion}`,
body: newVersion
})
.catch(function (err) {
console.error('Failed to create release')
throw err
})
})
.then(function (release) {
npm.load({}, function (err) {
if (err) {
console.error('Failed to load npm')
throw err
}
npm.commands.publish([release.tarball_url], function (err) {
if (err) {
console.error('Failed to publish package')
throw err
}
})
})
})
.then(function () {
return res.send(`Update to Electron v${newVersion}`)
})
} else {
return res.status(403).send('This service only responds to release events')
}
})
app.listen(app.get('port'), function () {
console.log('application running on port', app.get('port'))
})