Script to setup custom domains for review apps in Get on Board.

review_app_setup.rb

task :review_app_setup do
  GOB_DEV_DOMAIN = #<our-custom-domain-for-dev>
  require "dnsimple"
  require "platform-api"

  heroku_app_name = ENV["HEROKU_APP_NAME"]
  dnsimple_account_id = ENV["DNSIMPLE_DEV_ACCOUNT_ID"]

  type = { type: 'CNAME' }

  dnsimple_client = Dnsimple::Client.new(access_token: ENV["DNSIMPLE_ACCESS_TOKEN"])
  heroku_client = PlatformAPI.connect_oauth(ENV["HEROKU_API_TOKEN"])

  # set DEFAULT_HOST env var
  heroku_client.config_var.update(
    heroku_app_name,
    { DEFAULT_HOST: "#{heroku_app_name}.#{GOB_DEV_DOMAIN}"}
  )
  # enable ACM (https)
  heroku_client.app.enable_acm(heroku_app_name)
  # Configure the custom domains in Heroku making sure the list
  # correspond with the tenants at `test/fixtures/tenants.yml`
  %w(home cl pe mx ar co re).each do |tenant|
    subdomain = if tenant === "home"
      "#{heroku_app_name}"
    else
      "#{heroku_app_name}-#{tenant}"
    end
    hostname = [subdomain, GOB_DEV_DOMAIN].join('.')

    # create the custom domain in Heroku
    heroku_client.domain.create(heroku_app_name, hostname: hostname)
    heroku_domain = heroku_client.domain.info(heroku_app_name, hostname)["cname"]

    # Create the CNAME record in DNSimple
    opts = type.merge({ name: subdomain, content: heroku_domain })
    # Query DNSimple to check whether the record already exist.
    resp = dnsimple_client.zones.zone_records(
      dnsimple_account_id,
      GOB_DEV_DOMAIN,
      { filter: { name_like: subdomain } }
    )

    # only create it if not found
    dnsimple_client.zones.create_zone_record(
      dnsimple_account_id,
      GOB_DEV_DOMAIN,
      opts
    ) if resp.data.empty?
  end
end