Better IVR Protoype: using twilio

twilio_ivr_prototype.rb

class TwillioController < ApplicationController
  def digits
    params['Digits']
  end

  def twaction m
    "http://snapclean.me:3000/twillio/#{m.to_s}"
  end

  def send_back &block
    t = TWML.new do
      instance_eval &block
    end
    render :text => t.twml
  end

  # (415) 599-2671  PIN 3847-9755
  def start
    c = self
    send_back do
      say "Thankyou for calling the Card Issuer Prepaid activation center."
      say "Mobilized by Relay Network."
      gather(:action => c.twaction(:ismobilep), :digits => 1) do
        say "Press 1 if you are calling from your mobile phone."
        say "Otherwise press 2."
      end
    end
  end


  def ismobilep
    c = self
    send_back do
      say "Thank You."
      gather(:action => c.twaction(:provide_cardnumber), :digits => 16) do
        say "Please enter your 16 digit card number."
      end
    end
  end

  def provide_cardnumber
    c = self
    if !digits.empty? && digits.size == 16
      send_back do
        say "Thank you, your card has been activated. Good bye."
        hangup
      end
    else
      send_back do
        say "We're sorry, but that is not a valid card number."
        gather(:action => c.twaction(:provide_cardnumber), :digits => 16) do
          say "Please enter your 16 digit card number."
        end
      end
    end
  end
end


class TWML
  attr_accessor :twml

  def self.response &block
    self.new do
      instance_eval &block
    end
  end 

  def initialize &block
    @twml = "<Response>\n"
    instance_eval &block if block_given?
    @twml += "</Response>\n"
  end 

  def say phrase
    @twml += "#{@indent}<Say>#{phrase}</Say>\n"
  end 

  def gather opts={}, &block
    @twml += "<Gather action=\"#{opts[:action]}\" numDigits=\"#{opts[:digits]}\">\n"
    instance_eval &block if block_given?
    @twml += "</Gather>\n"
  end

  def hangup
    @twml += "<Hangup/>\n"
  end
end