Clean branches by closed issue numbers

clean_branches.rb

#!/usr/bin/env ruby
unless !!`which gh | grep 'bin/gh'`
  abort('Please run brew install github/gh/gh first. exiting now.')
end
Dir.chdir(ENV['HOME'] + '/dev/clients/thoroughcare')
issue_numbers = `gh issue list -s open -L 500 | grep -o '^[[:digit:]]*'`.split("\n")
branches = `git branch --sort=committerdate`.split("\n").map(&:strip)
branch_issue_numbers = branches.select{|b| b[/\/\d+/]}.map{|i| i[/\d+/]}
delete_issue_numbers = branch_issue_numbers.reject{|n| issue_numbers.include? n}.map(&:to_s)
unless delete_issue_numbers.any?
  abort('No branches with matching open issues found')
end
regex = Regexp.new(delete_issue_numbers.join('|').insert(0, '/'))
branches_to_delete = branches.select{|b| b[regex]}
puts branches_to_delete
puts "\n"
puts 'These branches have issues which have been closed'
puts 'Are you sure you want to delete them?  Y/N'

if gets.chomp.downcase == 'y'
  branches_to_delete.each{|branch| `git branch -D #{branch}`}
  puts 'The branches have been deleted'
else
  abort('No branches have been deleted')
end

Updated to use the new https://cli.github.com/ tool in place of octokit gem which seems to have some pagination issues atm.