require 'open-uri'

require 'nokogiri'

base_url = 'https://oss.sonatype.org/content/repositories/snapshots/org/jruby/jruby-dist'

index_url = "#{base_url}/maven-metadata.xml"

STDERR.puts index_url

xml = URI.open(index_url, &:read)

STDERR.puts xml

versions = Nokogiri::XML(xml).css('version').map(&:text)

most_recent = (versions - %w[9000.dev-SNAPSHOT]).last

builds_url = "#{base_url}/#{most_recent}/maven-metadata.xml"

STDERR.puts builds_url

xml = URI.open(builds_url, &:read)

STDERR.puts xml

last_build = Nokogiri::XML(xml).css('snapshotVersion').select { |node|

classifier = node.at('classifier')

classifier and classifier.text == 'bin' and node.at('extension').text == 'tar.gz'

}.map { |node| node.at('value').text }.last

final_url = "#{base_url}/#{most_recent}/jruby-dist-#{last_build}-bin.tar.gz"

puts final_url