class OAuth::CLI
  class AuthorizeCommand < BaseCommand
    def required_options
      [:uri]
    end

    def _run
      request_token = get_request_token

      if request_token.callback_confirmed?
        puts "Server appears to support OAuth 1.0a; enabling support."
        options[:version] = "1.0a"
      end

      puts "Please visit this url to authorize:"
      puts request_token.authorize_url

      # parameters for OAuth 1.0a
      oauth_verifier = ask_user_for_verifier

      verbosely_get_access_token(request_token, oauth_verifier)
    end

    def get_request_token
      consumer = get_consumer
      scope_options = options[:scope] ? { "scope" => options[:scope] } : {}
      consumer.get_request_token({ oauth_callback: options[:oauth_callback] }, scope_options)
    rescue OAuth::Unauthorized => e
      alert "A problem occurred while attempting to authorize:"
      alert e
      alert e.request.body
    end

    def get_consumer
      OAuth::Consumer.new \
        options[:oauth_consumer_key],
        options[:oauth_consumer_secret],
        access_token_url: options[:access_token_url],
        authorize_url: options[:authorize_url],
        request_token_url: options[:request_token_url],
        scheme: options[:scheme],
        http_method: options[:method].to_s.downcase.to_sym
    end

    def ask_user_for_verifier
      if options[:version] == "1.0a"
        puts "Please enter the verification code provided by the SP (oauth_verifier):"
        @stdin.gets.chomp
      else
        puts "Press return to continue..."
        @stdin.gets
        nil
      end
    end

    def verbosely_get_access_token(request_token, oauth_verifier)
      access_token = request_token.get_access_token(oauth_verifier: oauth_verifier)

      puts "Response:"
      access_token.params.each do |k, v|
        puts "  #{k}: #{v}" unless k.is_a?(Symbol)
      end
    rescue OAuth::Unauthorized => e
      alert "A problem occurred while attempting to obtain an access token:"
      alert e
      alert e.request.body
    end
  end
end
