module Stastic::Command
  class Base
  
    def initialize(args); end

    private

      def request_credentials
        print "Enter your Stastic login credentials.\n\n"
        attempts = 0

        begin
          attempts += 1
          print "  Email: "
          email = ask
          print "  Password: "
          password = ask_for_password
          token = Stastic::Client.authenticate(email, password)
        rescue Stastic::InvalidCredentials
          if attempts < 3
            print "\nInvalid credentials - try again.\n\n"
            retry
          else
            print "\nInvalid credentials -- too many tries!\n"
            exit
          end
        end

        Stastic::Config.update({:user => email, :token => token}, :global)
        print "\nYour credentials have been saved.\n"
      end

      def echo_off
        system "stty -echo"
      end

      def echo_on
        system "stty echo"
      end

      def ask
        gets.strip
      end

      def ask_for_password
        echo_off
        password = ask
        puts
        echo_on
        return password
      end

      def with_valid_user
        request_credentials unless Stastic::Config.credentials?
        begin
          yield
        rescue RestClient::Forbidden
          request_credentials
          retry 
        rescue RestClient::UnprocessableEntity => e
          puts "There was an error with the request:"
          puts 
          JSON.parse(e.response)['errors'].each do |msg|
            printf("   * %s\n", msg)
          end
          puts
          exit -1
        end
      end

      def with_valid_site
        request_credentials unless Stastic::Config.credentials?
        missing_site_id unless Stastic::Config.site_defined?
        begin
          yield
        rescue RestClient::Forbidden
          request_credentials
          retry 
        rescue RestClient::UnprocessableEntity => e
          puts "Error:"
          puts e.response.to_s
          puts
          exit
        end
      end

      def missing_site_id
        puts "No Stastic Site found.  To create a site, run:"
        puts 
        puts "  stastic create"
        puts
        exit
      end 
  end
end