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git.js
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git.js
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// Native
const path = require('path')
const url = require('url')
const childProcess = require('child_process')
// Packages
const fs = require('fs-extra')
const download = require('download')
const tmp = require('tmp-promise')
const isURL = require('is-url')
const cloneRepo = (parts, tmpDir) =>
new Promise((resolve, reject) => {
let host
switch (parts.type) {
case 'GitLab':
host = `gitlab.com`
break
case 'Bitbucket':
host = `bitbucket.org`
break
default:
host = `github.com`
}
const url = `https://${host}/${parts.main}`
const ref = parts.ref || (parts.type === 'Bitbucket' ? 'default' : 'master')
const cmd = `git clone ${url} --single-branch ${ref}`
childProcess.exec(cmd, { cwd: tmpDir.path }, (err, stdout) => {
if (err) {
reject(err)
}
resolve(stdout)
})
})
const renameRepoDir = async (pathParts, tmpDir) => {
const tmpContents = await fs.readdir(tmpDir.path)
const oldTemp = path.join(tmpDir.path, tmpContents[0])
const newTemp = path.join(tmpDir.path, pathParts.main.replace('/', '-'))
await fs.rename(oldTemp, newTemp)
tmpDir.path = newTemp
return tmpDir
}
const capitalizePlatform = name => {
const names = {
github: 'GitHub',
gitlab: 'GitLab',
bitbucket: 'Bitbucket'
}
return names[name]
}
const splittedURL = fullURL => {
const parsedURL = url.parse(fullURL)
const pathParts = parsedURL.path.split('/')
pathParts.shift()
// Set path to repo...
const main = pathParts[0] + '/' + pathParts[1]
// ...and then remove it from the parts
pathParts.splice(0, 2)
// Assign Git reference
let ref = pathParts.length >= 2 ? pathParts[1] : ''
// Firstly be sure that we haven know the ref type
if (pathParts[0]) {
// Then shorten the SHA of the commit
if (pathParts[0] === 'commit' || pathParts[0] === 'commits') {
ref = ref.substring(0, 7)
}
}
// We're deploying master by default,
// so there's no need to indicate it explicitly
if (ref === 'master') {
ref = ''
}
return {
main,
ref,
type: capitalizePlatform(parsedURL.host.split('.')[0])
}
}
const gitPathParts = main => {
let ref = ''
if (isURL(main)) {
return splittedURL(main)
}
if (main.split('/')[1].includes('#')) {
const parts = main.split('#')
ref = parts[1]
main = parts[0]
}
return {
main,
ref,
type: capitalizePlatform('github')
}
}
const downloadRepo = async repoPath => {
const pathParts = gitPathParts(repoPath)
const tmpDir = await tmp.dir({
// We'll remove it manually once deployment is done
keep: true,
// Recursively remove directory when calling respective method
unsafeCleanup: true
})
let gitInstalled = true
try {
await cloneRepo(pathParts, tmpDir)
} catch (err) {
gitInstalled = false
}
if (gitInstalled) {
const renaming = await renameRepoDir(pathParts, tmpDir)
return renaming
}
let url
switch (pathParts.type) {
case 'GitLab': {
const ref = pathParts.ref ? `?ref=${pathParts.ref}` : ''
url = `https://gitlab.com/${pathParts.main}/repository/archive.tar` + ref
break
}
case 'Bitbucket':
url = `https://bitbucket.org/${pathParts.main}/get/${pathParts.ref || 'default'}.zip`
break
default:
url = `https://api.github.com/repos/${pathParts.main}/tarball/${pathParts.ref}`
}
try {
await download(url, tmpDir.path, {
extract: true
})
} catch (err) {
tmpDir.cleanup()
return false
}
const renaming = await renameRepoDir(pathParts, tmpDir)
return renaming
}
const isRepoPath = path => {
if (!path) {
return false
}
const allowedHosts = ['github.com', 'gitlab.com', 'bitbucket.org']
if (isURL(path)) {
const urlParts = url.parse(path)
const slashSplitted = urlParts.path.split('/').filter(n => n)
const notBare = slashSplitted.length >= 2
if (allowedHosts.includes(urlParts.host) && notBare) {
return true
}
const err = new Error(`Host "${urlParts.host}" is unsupported.`)
err.code = 'INVALID_URL'
err.userError = true
throw err
}
return /[^\s\\]\/[^\s\\]/g.test(path)
}
const fromGit = async (path, debug) => {
let tmpDir = false
try {
tmpDir = await downloadRepo(path)
} catch (err) {
if (debug) {
console.log(`Could not download "${path}" repo from GitHub`)
}
}
return tmpDir
}
module.exports = {
gitPathParts,
isRepoPath,
fromGit
}