module Brakecheck

# File lib/brakecheck.rb, line 18
def self.compare(gem_name)
  return [false, "#{gem_name} not found in #{LOCK.basename}"] unless local = local(gem_name)
  return [false, "#{gem_name} not found on #{RUBYGEMS_HOST}"] unless latest = latest(gem_name)

  if latest == local
    [true, "Latest #{gem_name} #{latest} installed"]
  else
    [false, "Local version #{local} of #{gem_name} is not the latest version #{latest}"]
  end
end

# File lib/brakecheck.rb, line 8
def self.latest(gem_name)
  Gem.latest_version_for(gem_name)
end

# File lib/brakecheck.rb, line 12
def self.local(gem_name)
  lock = Bundler::LockfileParser.new(Bundler.read_file(LOCK))
  return unless spec = lock.specs.detect { |s| s.name == gem_name }
  spec.version
end