asdf_latest

asdf_latest.rb

#!/usr/bin/env ruby
require 'optparse'
require 'pry'


class Latest
  def initialize(lang, distros)
    @lang, @distros = lang, distros
    @distros = [@lang] unless distros

    @versions = versions
  end

  def versions
    all_versions = `asdf list-all #{@lang} 2> /dev/null`.split("\n")

    versions = []
    if @distros.delete(@lang)
      max = all_versions.reject { |v| v =~ /[a-zA-Z]/}.max_by { |v| Gem::Version.new(v) }
      versions.unshift(max)
    end

    @distros.each do |distro|
      max = all_versions.select { |v| v =~ /^#{distro}-/}.max_by { |v| Gem::Version.new(v.delete_prefix("#{distro}-")) }
      versions.append(max)
    end

    versions
  end

  def install
    @versions.each do |version|
      `asdf install #{@lang} #{version}`
    end
  end

  def install_only
    installed_versions = `asdf list #{@lang} 2> /dev/null`.split("\n").map(&:strip)
    old_versions = installed_versions - @versions

    old_versions.each do |version|
      `asdf uninstall #{@lang} #{version}`
    end
    
    install
  end

  def print
    puts @versions
  end
end

options = {}
OptionParser.new do |opts|
  opts.banner = "Usage:    [options]"
  opts.on("-d", "--dist ruby, rbx, jruby", Array, "List of version distros") do |d|
    options[:distros] = d
  end
  opts.on("-i", "--install", "Install the latest versions") do |i|
    options[:install] = i
  end
  opts.on("--only", "Keep latest versions only") do |o|
    options[:only] = o
  end
  opts.on("-h", "--help", "Prints this help") do
    puts opts
    exit
  end
end.parse!

latest = Latest.new(ARGV[0], options[:distros])

if options.key?(:install)
  latest.install
elsif options.key?(:only)
  latest.install_only
else
  latest.print
end