<?xml version="1.0" encoding="UTF-8"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml">

<meta name="description" content="Pizza ordering"/>
<meta name="author" content="OptimSys, s.r.o., Czech Republic (http://www.optimsys.cz)"/>
<meta name="copyright" content="free for any purpose"/>

<link event="help">
  <grammar root="main">
    <rule id="main" scope="public">
      <item repeat="0-1"> please </item>
      <item repeat="0-1"> I need </item>
      help
      <item repeat="0-1"> me </item>
      <item repeat="0-1"> please </item>
    </rule>
  </grammar>
</link>

<form id="start">
  <var name="summarization"/>

  <nomatch>
    <prompt> I didn't understand you. </prompt>
    <reprompt/>
  </nomatch>
  <nomatch count="3">
    <prompt> I didn't understand you again. This is your last chance. </prompt>
    <reprompt/>
  </nomatch>
  <nomatch count="4">
    <prompt> Sorry, I didn't understand you again. I am giving up. Bye. </prompt>
    <exit/>
  </nomatch>

  <help>
    Sorry, no help is available.
  </help>

  <grammar src="pizza.grxml"/>

  <initial name="mixed">
    Welcome to the pizza ordering service. Please specify your order.
    <nomatch>
      I didn't understand you. Please specify number, size
      and topping of your pizzas and kind of drink.
    </nomatch>
    <nomatch count="2">
      Sorry, I still don't understand you. I will ask you for the information
      one piece at a time.
      <assign name="mixed" expr="true"/>
      <reprompt/>
    </nomatch>
    <help>
      You can specify number, size and topping of your pizzas and
      kind of drink.
    </help>
  </initial>

  <filled mode="any" namelist="pizzanumber pizzasize pizzatopping">
    <assign name="summarization" expr="'I understood that you want '"/>
  </filled>

  <field name="pizzanumber" slot="pizza.number">
    How many pizzas do you want?
    <grammar src="pizza.grxml#ordernumber"/>
    <nomatch>
      I didn't understand you. Please say the number of pizzas you want.
    </nomatch>
    <help>
      Please say the number of pizzas you want.
    </help>
    <filled>
      <assign name="summarization" expr="summarization + pizzanumber + ' '"/>
    </filled>
  </field>

  <field name="pizzasize" slot="pizza.size">
    What size of pizzas do you want?
    <grammar src="pizza.grxml#ordersize"/>
    <nomatch>
      I didn't understand you. Please say what size of the pizzas you want.
    </nomatch>
    <nomatch count="2">
      I didn't understand you. Please say what size of the pizzas you want.
      You can choose from small, medium and large.
    </nomatch>
    <help>
      Please say what size of pizzas you want. You can choose from small,
      medium and large.
    </help>
    <filled>
      <assign name="summarization" expr="summarization + pizzasize + ' '"/>
    </filled>
  </field>

  <filled mode="any" namelist="pizzanumber pizzasize pizzatopping">
    <if cond="pizzanumber == 1">
      <assign name="summarization" expr="summarization + 'pizza '"/>
    <else/>
      <assign name="summarization" expr="summarization + 'pizzas '"/>
    </if>
  </filled>

  <field name="pizzatopping" slot="pizza.topping">
    What do you want on the top of the pizzas?
    <grammar src="pizza.grxml#ordertoppings"/>
    <nomatch>
      I didn't understand you. Please say what you want on the top of your pizzas.
    </nomatch>
    <nomatch count="2">
      I didn't understand you. Say something like ham and cheese.
    </nomatch>
    <help>
      Please say what you want on the top of your pizzas. Say something like
      ham and cheese.
    </help>
    <filled>
      <script> <![CDATA[
        summarization += 'with ';
        for (var i = 0; i < pizzatopping.length; i++) {
          summarization += pizzatopping[i];
          if (i != pizzatopping.length - 1) summarization += ' and ';
          else summarization += '.';
        }
      ]]> </script>
    </filled>
  </field>

  <filled mode="any" namelist="pizzanumber pizzasize pizzatopping">
    <prompt>
      <value expr="summarization"/>
    </prompt>
  </filled>

  <field name="drink">
    What do you want to drink?
    <grammar src="pizza.grxml#orderdrink"/>
    <nomatch>
      I didn't understand you. Please say what you want to drink.
    </nomatch>
    <help>
      Please say what you want to drink.
    </help>
    <filled>
      <if cond="drink == 'none'">
        <prompt> I understood that you don't want any drink. </prompt>
      <else/>
        <prompt> I understood that you will drink <value expr="drink"/>. </prompt>
      </if>
    </filled>
  </field>

  <block>
    <script> <![CDATA[
      summarization = pizzanumber;
      summarization += ' ';
      summarization += pizzasize;
      if (pizzanumber == 1) summarization += ' pizza ';
      else summarization += ' pizzas ';
      summarization += 'with ';
      for (var i = 0; i < pizzatopping.length; i++) {
        summarization += pizzatopping[i];
        summarization += ' and ';
      }
      if (drink == 'none') summarization += 'nothing';
      else summarization += drink;
      summarization += ' to drink.';
    ]]> </script>
    <prompt>
      Thank you for your order. You ordered <value expr="summarization"/>
    </prompt>
  </block>
</form>

</vxml>

<?xml version="1.0" encoding="UTF-8"?>
<grammar version="1.0" root="order" xml:lang="en">

<meta name="description" content="grammar for ordering a pizza and a drink"/>
<meta name="author" content="OptimSys, s.r.o., Czech Republic (http://www.optimsys.cz)"/>
<meta name="copyright" content="free for any purpose"/>

<rule id="politness1">
  <item repeat="0-1"> please </item>
  <item repeat="0-1">
    I
    <one-of>
      <item> want </item>
      <item> would like </item>
    </one-of>
  </item>
</rule>

<rule id="politness2">
  <item repeat="0-1">
    <one-of>
      <item> please </item>
      <item> thank you </item>
    </one-of>
  </item>
</rule>

<rule id="order" scope="public">
  <tag>out.pizza = new Object;</tag>

  <ruleref uri="#politness1"/>
  <item repeat="1-">
    <one-of>
      <item>
        <ruleref uri="#drink"/>
        <tag>out.drink = rules.drink</tag>
      </item>
      <item>
        <ruleref uri="#number"/>
        <tag>out.pizza.number = rules.number</tag>
      </item>
      <item>
        <ruleref uri="#size"/>
        <tag>out.pizza.size = rules.size</tag>
      </item>
      <item>
        <item repeat="0-1"> with </item>
        <ruleref uri="#topping"/>
        <item repeat="0-1"> and </item>
        <tag>
          if (typeof out.pizza.topping != "object") out.pizza.topping = new Array;
          out.pizza.topping.push (rules.topping);
        </tag>
      </item>
    </one-of>
  </item>
  <ruleref uri="#politness2"/>
</rule>

<rule id="orderdrink" scope="public">
  <ruleref uri="#politness1"/>
  <ruleref uri="#drink"/>
  <tag> out = rules.drink</tag>
  <ruleref uri="#politness2"/>
</rule>

<rule id="drink">
  <one-of>
    <item>coca cola <tag>out = "coke"</tag></item>
    <item>coke</item>
    <item>sprite</item>
    <item>fanta</item>
    <item>none</item>
    <item>nothing <tag>out = "none"</tag></item>
  </one-of>
</rule>

<rule id="ordernumber" scope="public">
  <ruleref uri="#politness1"/>
  <ruleref uri="#number"/>
  <tag> out = rules.number</tag>
  <ruleref uri="#politness2"/>
</rule>

<rule id="number">
  <one-of>
    <item> a <tag>out=1</tag></item>
    <item> one <tag>out=1</tag></item>
    <item> 1 </item>
    <item> two <tag>out=2</tag></item>
    <item> 2 </item>
    <item> three <tag>out=3</tag></item>
    <item> 3 </item>
    <item> four <tag>out=4</tag></item>
    <item> 4 </item>
    <item> five <tag>out=5</tag></item>
    <item> 5 </item>
  </one-of>
</rule>

<rule id="ordersize" scope="public">
  <ruleref uri="#politness1"/>
  <ruleref uri="#size"/>
  <tag> out = rules.size</tag>
  <ruleref uri="#politness2"/>
</rule>

<rule id="size">
  <one-of>
    <item><ruleref uri="#size_small"/><tag>out="small"</tag></item>
    <item><ruleref uri="#size_medium"/><tag>out="medium"</tag></item>
    <item><ruleref uri="#size_big"/><tag>out="big"</tag></item>
  </one-of>
  <item repeat="0-1"> size </item>
</rule>

<rule id="size_small">
  small
</rule>

<rule id="size_medium">
  <one-of>
    <item> average </item>
    <item> medium </item>
    <item> normal </item>
    <item> regular </item>
  </one-of>
</rule>

<rule id="size_big">
  <one-of>
    <item> big </item>
    <item> large </item>
  </one-of>
</rule>

<rule id="ordertoppings" scope="public">
  <tag> out = new Array; </tag>
  <ruleref uri="#politness1"/>
  <item repeat="1-">
    <item repeat="0-1"> with </item>
    <ruleref uri="#topping"/>
    <item repeat="0-1"> and </item>
    <tag> out.push(rules.topping); </tag>
  </item>
  <ruleref uri="#politness2"/>
</rule>

<rule id="topping">
  <one-of>
    <item> cheese </item>
    <item> ham </item>
    <item> pepperoni </item>
    <item> eggs </item>
    <item> anchovies </item>
    <item> mushrooms </item>
  </one-of>
</rule>

</grammar>