Script for integrating Pronto with Circle CI

automated_code_review

#!/usr/bin/env ruby
require 'net/http'
require 'json'

github_access_token = ENV['PRONTO_GITHUB_ACCESS_TOKEN'] || '' # Env set manualy on Circle CI to access token with proper rights
pull_request_url = ENV['CI_PULL_REQUEST'] || '' # Env set automaticaly by Circle CI
pull_request_id = pull_request_url.split('/').last # Example: 'https://github.com/rails/rails/pull/20554'

repo_owner = 'repo_owner'
repo_name = 'repo_name'

puts 'Set PRONTO_GITHUB_ACCESS_TOKEN var' if github_access_token.empty?
puts 'No Pull Request recognized' if pull_request_id.nil?

if !github_access_token.empty? && !pull_request_id.nil?
  uri = URI("https://api.github.com/repos/#{repo_owner}/#{repo_name}/pulls/#{pull_request_id}")

  Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
    # Get Pull request base commit (to compage agains
    # this commit instead of master)
    request = Net::HTTP::Get.new uri
    request['Authorization'] = "token #{github_access_token}"
    response = http.request request # Net::HTTPResponse object
    base_commit_sha = JSON.parse(response.body)['base']['sha']

    # Post PR review
    system "((PULL_REQUEST_ID=#{pull_request_id} bundle exec pronto run -f \
              github_status github_pr -c #{base_commit_sha})) || true"
  end
end