const path = require('path')

const request = require('request-promise-native')

const repositoryRootPath = path.resolve(__dirname, '..', '..')

const appMetadata = require(path.join(repositoryRootPath, 'package.json'))

const baseVersion = appMetadata.version.split('-')[0]

async function generateNightlyVersion () {

const releases = await request({

url: 'https://api.github.com/repos/atom/atom-nightly-releases/releases',

headers: {'Accept': 'application/vnd.github.v3+json', 'User-Agent': 'Atom Release Build'},

json: true

})

let releaseNumber = 0

if (releases && releases.length > 0) {

const latestRelease = releases.find(r => !r.draft)

const versionMatch = latestRelease.tag_name.match(/^v?(\d+\.\d+\.\d+)-nightly(\d+)$/)

if (versionMatch && versionMatch[1] === baseVersion) {

releaseNumber = parseInt(versionMatch[2]) + 1

}

}

// Set our ReleaseVersion build variable and update VSTS' build number to

// include the version. Writing these strings to stdout causes VSTS to set

// the associated variables.

const generatedVersion = `${baseVersion}-nightly${releaseNumber}`

console.log(`##vso[task.setvariable variable=ReleaseVersion;isOutput=true]${generatedVersion}`)

console.log(`##vso[build.updatebuildnumber]${generatedVersion}+${process.env.BUILD_BUILDNUMBER}`)

}

generateNightlyVersion()