clean_branches.rb

require 'pry'
require 'octokit'

REPO_PATH = 'CouponTrade/giftcards'
WHITE_LIST = %w[
  drachma
]

def in_giftcards_dir
  Dir.chdir(File.expand_path('~/projects/giftcards')) do
    yield
  end
end

Octokit.auto_paginate = true
client = Octokit::Client.new(access_token: '__')
prs = client.pull_requests(REPO_PATH, state: 'closed', per_page: 100)
merged_prs = prs.map { |pr| pr.head.ref if pr.merged_at }.compact


in_giftcards_dir do
  remote_branches = `git branch -r`.split("\n").map { |b| b.gsub('origin/', '').strip  }
  merged_prs.each do |ref|
    if remote_branches.include?(ref) && !WHITE_LIST.include?(ref)
      puts "Deleting branch of merged PR: #{ref}"
      system("git push origin :#{ref}")
    end
  end
end