upstream_version_check

#!/usr/bin/env ruby

require 'open3'

packages = {
  haml_lint: 'https://github.com/brigade/haml-lint/tags',
  brakeman: 'https://github.com/presidentbeef/brakeman/tags',
  rubocop: 'https://github.com/bbatsov/rubocop/tags',
  rails_best_practices: 'https://github.com/railsbp/rails_best_practices/tags'
}

Dir.chdir __dir__

packages.each do |package, url|
  line = File.readlines('Gemfile').grep(/#{package}/)[0]
  version = line.match(/((\d+\.?)+)/).to_s

  cmd = %W(
    uscan
    --upstream-version #{version}
    --package #{package}
    --no-download
    --watchfile -
  ).join ' '

  Open3.popen3(cmd) do |stdin, stdout, _stderr, _thread|
    stdin.puts(
      'version=3',
      'opts=filenamemangle=' \
         's/.+\\/v?(\\d\S*)\\.tar\\.gz/rubocop-$1\\.tar\\.gz/ \\',
      "#{url} \\",
      '.*/v?(\d\S*)\.tar\.gz'
    )
    stdin.close
    ret = stdout.read.chomp
    puts ret unless ret.empty?
  end
end