module Octokit::Client::Contents

def archive_link(repo, options = {})
  repo_ref = ERB::Util.url_encode(options.delete(:ref))
  format = (options.delete :format) || 'tarball'
  url = "#{Repository.path repo}/#{format}/#{repo_ref}"
  response = client_without_redirects.head(url, options)
  response.headers['Location']
end

def contents(repo, options = {})
  options = options.dup
  repo_path = options.delete :path
  url = "#{Repository.path repo}/contents/#{repo_path}"
  get url, options
end

def create_contents(*args)
  args    = args.map { |item| item&.dup }
  options = args.last.is_a?(Hash) ? args.pop : {}
  repo    = args.shift
  path    = args.shift
  message = args.shift
  content = args.shift
  if content.nil? && file = options.delete(:file)
    case file
    when String
      if File.exist?(file)
        file = File.open(file, 'r')
        content = file.read
        file.close
      end
    when File, Tempfile
      content = file.read
      file.close
    end
  end
  raise ArgumentError, 'content or :file option required' if content.nil?
  options[:content] = [content].pack('m0') # Base64.strict_encode64
  options[:message] = message
  url = "#{Repository.path repo}/contents/#{path}"
  put url, options
end

def delete_contents(repo, path, message, sha, options = {})
  options[:message] = message
  options[:sha] = sha
  url = "#{Repository.path repo}/contents/#{path}"
  delete url, options
end

def readme(repo, options = {})
  get "#{Repository.path repo}/readme", options
end

def update_contents(*args)
  options = args.last.is_a?(Hash) ? args.pop : {}
  repo    = args.shift
  path    = args.shift
  message = args.shift
  sha     = args.shift
  content = args.shift
  options.merge!(sha: sha)
  create_contents(repo, path, message, content, options)
end