<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ Copyright (C) 2001-2016 Food and Agriculture Organization of the
  ~ United Nations (FAO-UN), United Nations World Food Programme (WFP)
  ~ and United Nations Environment Programme (UNEP)
  ~
  ~ This program is free software; you can redistribute it and/or modify
  ~ it under the terms of the GNU General Public License as published by
  ~ the Free Software Foundation; either version 2 of the License, or (at
  ~ your option) any later version.
  ~
  ~ This program is distributed in the hope that it will be useful, but
  ~ WITHOUT ANY WARRANTY; without even the implied warranty of
  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  ~ General Public License for more details.
  ~
  ~ You should have received a copy of the GNU General Public License
  ~ along with this program; if not, write to the Free Software
  ~ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  ~
  ~ Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
  ~ Rome - Italy. email: geonetwork@osgeo.org
  -->

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:geonet="http://www.fao.org/geonetwork"
                xmlns:saxon="http://saxon.sf.net/"
                xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
                xmlns:dcat="http://www.w3.org/ns/dcat#"
                xmlns:dc="http://purl.org/dc/elements/1.1/"
                xmlns:dct="http://purl.org/dc/terms/"
                xmlns:gco="http://www.isotc211.org/2005/gco"
                xmlns:gfc="http://www.isotc211.org/2005/gfc"
                version="2.0"
                extension-element-prefixes="saxon" exclude-result-prefixes="#all">


  <!-- TODO : add Multilingual metadata support -->

  <!--
    Create reference block to metadata record and dataset to be added in dcat:Catalog usually.
  -->
  <!-- FIME : $url comes from a global variable. -->
  <xsl:template match="gfc:FC_FeatureCatalogue|gfc:FC_FeatureType" mode="record-reference">
    <dcat:dataset rdf:resource="{$resourcePrefix}/datasets/{@uuid}"/>
    <dcat:record rdf:resource="{$resourcePrefix}/records/{@uuid}"/>
  </xsl:template>


  <!--
    Convert ISO record to DCAT
    -->
  <xsl:template match="gfc:FC_FeatureCatalogue|gfc:FC_FeatureType" mode="to-dcat">
    <!-- Catalogue records
      "A record in a data catalog, describing a single dataset."
    -->
    <rdf:Description rdf:about="{$resourcePrefix}/records/{@uuid}">
      <dc:title>
        <xsl:value-of select="gfc:name/gco:CharacterString"/>
      </dc:title>

      <!-- Metadata change date.
      "The date is encoded as a literal in "YYYY-MM-DD" form (ISO 8601 Date and Time Formats)." -->
      <xsl:variable name="date" select="substring-before(gfc:versionDate/gco:DateTime, 'T')"/>
      <dct:issued>
        <xsl:value-of select="$date"/>
      </dct:issued>
      <dct:modified>
        <xsl:value-of select="$date"/>
      </dct:modified>

      <!-- Source relation -->
      <xsl:for-each select="/root/gui/relation/*/response/metadata">
        <dc:relation rdf:resource="{$resourcePrefix}/records/{geonet:info/uuid}"/>
      </xsl:for-each>

    </rdf:Description>
  </xsl:template>

  <xsl:template mode="references" match="gfc:FC_FeatureCatalogue|gfc:FC_FeatureType"/>

</xsl:stylesheet>