<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns="http://icedtea.classpath.org/thermostat/plugins/v1.0"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           targetNamespace="http://icedtea.classpath.org/thermostat/plugins/v1.0"
           elementFormDefault="qualified">


<!-- definition of simple elements -->
<xs:element name="name" type="xs:string"/>
<xs:element name="symbolic-name" type="xs:string"/>
<xs:element name="version" type="xs:string"/>
<xs:element name="usage" type="xs:string"/>
<xs:element name="description" type="xs:string"/>
<xs:element name="short" type="xs:string"/>
<xs:element name="long" type="xs:string"/>
<xs:element name="argument" type="xs:string"/>
<xs:element name="required" type="xs:boolean"/>


<!-- definition of complex elements -->
<xs:element name="plugin">
  <xs:complexType>
    <xs:choice>
      <xs:sequence>
        <xs:element ref="commands"/>
        <xs:element ref="extensions" minOccurs="0" maxOccurs="1"/>
      </xs:sequence>
      <xs:element ref="extensions"/>
    </xs:choice>
  </xs:complexType>
</xs:element>


<xs:element name="commands">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="command" minOccurs="1" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="extensions">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="extension" minOccurs="1" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>


<xs:element name="extension">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="name"/>
      <xs:element ref="bundles"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>


<xs:element name="command">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="name"/>
      <xs:element ref="usage" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="description"/>
      <xs:element ref="arguments" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="options" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="environments"/>
      <xs:element ref="bundles"/>
    </xs:sequence>
  </xs:complexType>
</xs:element> 


<xs:element name="arguments">
  <xs:complexType>
    <xs:annotation>
      <xs:documentation>
        "Arguments" tag has been set as optional for commands that don't need any specified argument 
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref="argument" minOccurs="0" maxOccurs="1"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="options">
  <xs:complexType>
    <xs:annotation>
      <xs:documentation>
        "Options" tag has been set as optional for commands that don't need any specified option 
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref="group" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="option" minOccurs="1" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>


<xs:element name="group">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="required" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="option" minOccurs="2" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>


<xs:element name="option">
  <xs:complexType>
    <xs:sequence>
      <xs:choice>
        <xs:sequence>
          <xs:element ref="long"/>
          <xs:element ref="short" minOccurs="0" maxOccurs="1"/>
        </xs:sequence>
        <xs:element ref="short"/>
      </xs:choice>
      <xs:element ref="argument" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="required" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="description" minOccurs="0" maxOccurs="1"/>
    </xs:sequence>
    <xs:attribute name="common" type="xs:boolean" use="optional"/>
  </xs:complexType>
</xs:element>

<xs:element name="environments">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="environment" minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="environment">
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="shell">
        <xs:annotation>
          <xs:documentation>Indicates that the command is available to be invoked from within the thermostat shell.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="cli">
        <xs:annotation>
          <xs:documentation>Indicates that the command is available to be invoked as an argument to the main thermostat program.</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
</xs:element>

<xs:element name="bundles">
  <xs:annotation>
    <xs:documentation>
      Specifies OSGi bundles
    </xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="bundle" minOccurs="1" maxOccurs="unbounded"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>

<xs:element name="bundle">
  <xs:annotation>
    <xs:documentation>
      Specifies an OSGi bundle
    </xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="symbolic-name">
        <xs:annotation>
          <xs:documentation>
            The 'Bundle-SymbolicName' of the OSGi bundle
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element ref="version">
        <xs:annotation>
          <xs:documentation>
            The 'Bundle-Version' of the OSGi bundle
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:element>

</xs:schema>