const $ = require('shelljs')

require('../logging')

$.config.fatal = true

function validate_args(...args) {

if (!args.every(x => x && x.length)) {

throw `All the required parameters should have value.`

}

}

function push_image_to_heroku(app, source, dyno, user, token) {

console.info('pushing docker image to heroku')

console.debug('connecting to heroku docker registry')

$.exec(`docker login --username ${user} --password ${token} registry.heroku.com`)

console.debug('tagging the image')

$.exec(`docker tag ${source} registry.heroku.com/${app}/${dyno}`)

console.debug('pushing the image')

$.exec(`docker push registry.heroku.com/${app}/${dyno}`)

}

function release_heroku_app(app, source, dyno, token) {

console.info('deploying the image to heroku dyno')

console.debug(`getting docker image ID`)

const image_id = $.exec(`docker inspect ${source} --format={{.Id}}`).stdout.trim()

console.debug(`upgrading to new release`)

const post_data = JSON.stringify({

updates: [{

type: dyno,

docker_image: image_id

}]

})

$.exec(

`curl -X PATCH https://api.heroku.com/apps/${app}/formation ` +

`-H 'Authorization: Bearer ${token}' ` +

`-H "Content-Type: application/json" ` +

`-H "Accept: application/vnd.heroku+json; version=3.docker-releases" ` +

`-d ${JSON.stringify(post_data)}`

)

}

exports.deploy = function (app, source, dyno, user, token) {

validate_args(app, source, dyno, user, token)

push_image_to_heroku(app, source, dyno, user, token)

release_heroku_app(app, source, dyno, token)

}