class Releaser

def _confirm_publish

def _confirm_publish
  input = nil
  loop do
    STDOUT.puts "Would you like to publish this GitHub release now? (y/n)"
    input = STDIN.gets.chomp.downcase
    break if %w(y n).include?(input)
  end
  exit if input == "n"
end

def _detect_gh_release(gh_client, tag_name, draft)

def _detect_gh_release(gh_client, tag_name, draft)
  gh_releases = gh_client.releases(@github_repo)
  gh_releases.detect { |r| r.tag_name == tag_name && r.draft == draft }
end

def _success_summary(gh_release, tag_name)

def _success_summary(gh_release, tag_name)
  href = gh_release.rels[:html].href
  STDOUT.puts "GitHub release #{tag_name} has been published!"
  STDOUT.puts "\nPlease enjoy and spread the word!"
  STDOUT.puts "Lack of inspiration? Here's a tweet you could improve:\n\n"
  STDOUT.puts "Just released #{@project_name} #{@version}! #{href}"
end

def _update_release(gh_client, gh_release, tag_name)

def _update_release(gh_client, gh_release, tag_name)
  result = gh_client.update_release(gh_release.rels[:self].href, draft: false)
  return true if result
  STDOUT.puts "GitHub release #{tag_name} couldn't be published!"
  false
end

def _verify_released

def _verify_released
  if @version != Gems.info(@gem_name)["version"]
    STDOUT.puts "#{@project_name} #{@version} is not yet released."
    STDOUT.puts "Please release it first with: rake release:gem"
    exit
  end
end

def _verify_tag_pushed

def _verify_tag_pushed
  tags = `git ls-remote --tags origin`.split("\n")
  return if tags.detect { |tag| tag =~ /v#{@version}$/ }
  STDOUT.puts "The tag v#{@version} has not yet been pushed."
  STDOUT.puts "Please push it first with: rake release:gem"
  exit
end

def full

def full
  rubygems
  github
end

def github

def github
  tag_name = "v#{@version}"
  require "gems"
  _verify_released
  _verify_tag_pushed
  require "octokit"
  gh_client = Octokit::Client.new(netrc: true)
  gh_release = _detect_gh_release(gh_client, tag_name, true)
  return unless gh_release
  STDOUT.puts "Draft release for #{tag_name}:\n"
  STDOUT.puts gh_release.body
  STDOUT.puts "\n-------------------------\n\n"
  _confirm_publish
  return unless _update_release(gh_client, gh_release, tag_name)
  gh_release = _detect_gh_release(gh_client, tag_name, false)
  _success_summary(gh_release, tag_name)
end

def initialize(options = {})

def initialize(options = {})
  @project_name = options.delete(:project_name) do
    fail "project_name is needed!"
  end
  @gem_name = options.delete(:gem_name) do
    fail "gem_name is needed!"
  end
  @github_repo = options.delete(:github_repo) do
    fail "github_repo is needed!"
  end
  @version = options.delete(:version) do
    fail "version is needed!"
  end
end

def rubygems

def rubygems
  input = nil
  loop do
    STDOUT.puts "Release #{@project_name} #{@version} to RubyGems? (y/n)"
    input = STDIN.gets.chomp.downcase
    break if %w(y n).include?(input)
  end
  exit if input == "n"
  Rake::Task["release"].invoke
end