last-green-master

#!/usr/bin/env ruby

require 'json'
require 'open-uri'

token = ENV['CIRCLE_CI_TOKEN']

repo_match = `git config --get remote.origin.url`.chomp.match(/git@github.com:(.+)\.git/)

if repo_match.nil?
  warn "Current directory is not a git repository"
  exit(1)
end

repo = repo_match[1]

builds = JSON.parse(open("https://circleci.com/api/v1/project/#{repo}/tree/master?circle-token=#{token}").read)

unless green = builds.select { |b| b['outcome'] == 'success' }.sort_by { |b| b['build_num'] }.last
  warn "Could not find green test run on master"
  exit(1)
end

puts green['vcs_revision']