CircleCIでプルリクエストがWIPかチェックするやつ

check_wip.rb

def pr_url
  uri_path = URI.parse(ENV['CI_PULL_REQUEST']).path.split('/')
  "https://api.github.com/repos/#{uri_path[1]}/#{uri_path[2]}/pulls/#{uri_path[4]}"
end

def pr_title
  require 'net/http'
  require 'uri'
  require 'json'

  uri = URI.parse(pr_url)
  request = Net::HTTP::Get.new(uri)
  request['Authorization'] = "token #{ENV['GITHUB_API_TOKEN']}"

  req_options = {
    use_ssl: uri.scheme == 'https',
  }

  response = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
    http.request(request)
  end
  JSON.parse(response.body)['title']
end

def wip?(title)
  title.start_with?('[WIP]')
end

exit !wip?(pr_title)