<xsl:stylesheet xmlns="http://purl.org/NET/xbiblio/citeproc" xmlns:bib="http://purl.org/NET/xbiblio/citeproc" xmlns:cs="http://purl.org/NET/xbiblio/csl" xmlns:db="http://docbook.org/ns/docbook" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:exist="http://exist.sourceforge.net/NS/exist" xmlns:xdoc="http://www.pnp-software.com/XSLTdoc" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:course="http://purl.org/NET/xbiblio/course" version="2.0" exclude-result-prefixes="db xdoc xhtml mods xs cs exist bib course">
  <xsl:include href="config/CONFIG" />
  <xsl:include href="main/format-style.xsl" />
  <xsl:include href="main/functions.xsl" />
  <xsl:include href="main/sort.xsl" />
  <xsl:include href="main/process-mods.xsl" />
  <xsl:include href="drivers/in-driver.xsl" />
  <xsl:include href="drivers/out-drivers.xsl" />
  <xsl:include href="VERSION" />
  <!-- === licensed under CC-GNU GPL; see http://creativecommons.org/licenses/GPL/2.0 === -->
  <xsl:output name="xml" encoding="UTF-8" indent="yes" />
  <xsl:strip-space elements="cs:*" />
  
  
  <xsl:param name="sort_order-bib" as="xs:string">
    <xsl:choose>
      <xsl:when test="$citeclass='citekey'">citekey</xsl:when>
      <xsl:when test="$citeclass='number'">
        <xsl:value-of select="$style-biblio/@sort-order" />
      </xsl:when>
      <xsl:otherwise>author-year</xsl:otherwise>
    </xsl:choose>
  </xsl:param>
  
  <xsl:param name="citation-style" required="yes" as="xs:string" />
  <xsl:variable name="styles" as="document-node()" select="doc(concat('../styles/',$citation-style,'.csl'))" />
  
  <xsl:param name="citeclass" select="$styles/cs:citationstyle/@class" />
  <xsl:variable name="style-citation" select="$styles/cs:citationstyle/cs:content/cs:citation" />
  <xsl:variable name="style-biblio" select="$styles/cs:citationstyle/cs:content/cs:bibliography" />
  <xsl:variable name="style-names" select="$styles/cs:citationstyle/cs:content/cs:names" />
  <xsl:variable name="style-terms" select="$styles/cs:citationstyle/cs:content/cs:terms" />
  <xsl:variable name="locators" select="$styles/cs:citationstyle/cs:content/cs:locators" />
  
  <xsl:key name="refs" match="db:biblioref" use="@linkend" />
  
  <xsl:variable name="cite-position">
    <bib:refs>
      <bib:all>
        <xsl:for-each select="$citerefs">
          <bib:ref position="{position()}" id="{generate-id()}" key="{.}" />
        </xsl:for-each>
      </bib:all>
      <bib:unique>
        <xsl:for-each-group select="$citerefs" group-by=".">
          <bib:ref position="{position()}" id="{generate-id()}" key="{.}" />
        </xsl:for-each-group>
      </bib:unique>
    </bib:refs>
  </xsl:variable>
  
  <xsl:variable name="citekeys">
    <xsl:if test="$bibdb='exist-xmldb'">(</xsl:if>
    <xsl:if test="$bibdb='sru'">%22</xsl:if>
    <xsl:for-each-group select="$citerefs" group-by=".">
      <xsl:if test="position() gt 1">
        <xsl:choose>
          <xsl:when test="$bibdb='exist-xmldb'">,%20</xsl:when>
          <xsl:otherwise>%20</xsl:otherwise>
        </xsl:choose>
      </xsl:if>
      <xsl:if test="$bibdb='exist-xmldb'">'</xsl:if>
      <xsl:value-of select="." />
      <xsl:if test="$bibdb='exist-xmldb'">'</xsl:if>
    </xsl:for-each-group>
    <xsl:if test="$bibdb='sru'">%22</xsl:if>
    <xsl:if test="$bibdb='exist-xmldb'">)</xsl:if>
  </xsl:variable>
  <xsl:variable name="authentication" select="'&amp;x-info-2-auth1.0-authenticationToken='" as="xs:string" />
  <xsl:variable name="sru-email" select="concat('email=', $email)" as="xs:string" />
  
  <xsl:variable name="bibrecord">
    <xsl:message>
      <xsl:text>
CiteProc XSL Stylesheets v</xsl:text>
      <xsl:value-of select="$CP-VERSION" />
      <xsl:text>
</xsl:text>
    </xsl:message>
    <xsl:message>
      <xsl:text>citation style: </xsl:text>
      <xsl:value-of select="$styles/cs:citationstyle/cs:info/cs:title" />
    </xsl:message>
    <xsl:message>
      <xsl:text>citation class: </xsl:text>
      <xsl:value-of select="$citeclass" />
      <xsl:text>
</xsl:text>
    </xsl:message>
    <xsl:choose>
      <xsl:when test="$bibdb='exist-xmldb'">
        <xsl:copy-of select="doc(concat(&quot;http://localhost:8080/exist/servlet/db/mods?&quot;, &quot;_query=declare%20namespace%20mods=%22http://www.loc.gov/mods/v3%22;&quot;, &quot;%20for%20$citekey%20in%20&quot;, $citekeys, &quot;%20return%20//mods:mods[@ID=$citekey]&amp;_howmany=-1&quot;))" />
      </xsl:when>
      <xsl:when test="$bibdb='sru'">
        <xsl:copy-of select="doc(concat($server_url, 'version=1.1&amp;query=bib.citekey%20any%20', $citekeys, '&amp;operation=searchRetrieve&amp;recordSchema=mods&amp;recordPacking=xml&amp;startRecord=1&amp;maximumRecords=9999', $authentication, $sru-email))" />
      </xsl:when>
      <xsl:when test="$bibdb='flatfile'">
        <mods:modsCollection>
          <xsl:for-each select="distinct-values($citerefs)">
            <xsl:copy-of select="document($bibinfile)/mods:modsCollection/mods:mods[@ID=current()]" />
          </xsl:for-each>
        </mods:modsCollection>
      </xsl:when>
    </xsl:choose>
  </xsl:variable>
  
  <xsl:variable name="raw-biblist">
    <modsCollection xmlns="http://www.loc.gov/mods/v3">
      <xsl:copy-of select="$bibrecord//mods:mods" />
    </modsCollection>
  </xsl:variable>
  
  <xsl:variable name="enhanced-biblist">
    <mods:modsCollection>
      <xsl:choose>
        <xsl:when test="$sort_order-bib='citekey'">
          <xsl:apply-templates select="$raw-biblist/mods:modsCollection" mode="sort_citekey" />
        </xsl:when>
        <xsl:when test="$sort_order-bib='cited'">
          <xsl:apply-templates select="$raw-biblist/mods:modsCollection" mode="sort_cited" />
        </xsl:when>
        <xsl:when test="$sort_order-bib='author-year'">
          <xsl:apply-templates select="$raw-biblist/mods:modsCollection" mode="sort_author-year" />
        </xsl:when>
      </xsl:choose>
    </mods:modsCollection>
  </xsl:variable>
  
  
  <xsl:template name="bib:format-bibliography">
    <xsl:param name="output-format" as="xs:string" />
    <xsl:choose>
      <xsl:when test="$output-format='latex'">
        <xsl:apply-templates select="$bib:formatted-biblist" mode="output-latex" />
      </xsl:when>
      <xsl:when test="$output-format='xhtml'">
        <xsl:apply-templates select="$bib:formatted-biblist" mode="output-xhtml" />
      </xsl:when>
      <xsl:when test="$output-format='fo'">
        <xsl:apply-templates select="$bib:formatted-biblist" mode="output-fo" />
      </xsl:when>
    </xsl:choose>
    <xsl:if test="$biboutfile">
      <xsl:result-document href="{$biboutfile}" format="xml">
        <xsl:copy-of select="$raw-biblist" />
      </xsl:result-document>
    </xsl:if>
  </xsl:template>
  
  
  <xsl:variable name="bib:formatted-biblist">
    <xsl:apply-templates select="$enhanced-biblist/mods:modsCollection/mods:mods" mode="temp-placeholder" />
  </xsl:variable>
  
  
  <xsl:template match="mods:mods" mode="temp-placeholder">
    <xsl:variable name="shorten-author" select="@bib:shorten-author" />
    <xsl:variable name="use_reftype" select="@bib:use-reftype" />
    <xsl:variable name="id" select="@ID" />
    <xsl:variable name="number">
      <xsl:choose>
        <xsl:when test="$sort_order-bib='author-year'">
          <xsl:value-of select="position()" />
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$cite-position/bib:refs/bib:unique/bib:ref[@key=$id]/@position" />
        </xsl:otherwise>
      </xsl:choose> 
    </xsl:variable>
    <xsl:apply-templates select="$style-biblio">
      <xsl:with-param name="bib:source" select="." as="element()" tunnel="yes" />
      <xsl:with-param name="use_reftype" select="@bib:use-reftype" as="xs:string" tunnel="yes" />
      <xsl:with-param name="bib:number" select="$number" as="xs:string" tunnel="yes" />
    </xsl:apply-templates>
  </xsl:template>
  
  
  <xsl:template name="bib:format-citation">
    <xsl:param name="output-format" as="xs:string" />
    <!-- create a temporary tree to hold the processing citations -->
    <xsl:variable name="intermediate-citation">
      <bib:span class="citation">
        <xsl:value-of select="$style-citation/cs:prefix" />
        <xsl:choose>
          <xsl:when test="$sort_order-bib='author-year' or $citeclass='note-nobib'">
            <xsl:choose>
              <!-- FIX: add additional conditional for @ibid, configure formatting in CSL -->
              <xsl:when test="bib:ibid(.) and count(db:biblioref)=1">
                <bib:a class="citation" href="#{db:biblioref/@linkend}">
                  <xsl:text>ibid.</xsl:text>
                </bib:a>
              </xsl:when>
              <xsl:when test="$citeclass='author-year' or $citeclass='note-nobib'">
                <xsl:apply-templates select="." mode="sort_citation_author-year" />
                </xsl:when>
              <xsl:otherwise>
                <xsl:apply-templates select="db:biblioref" mode="otherwise" />
              </xsl:otherwise>
            </xsl:choose>
          </xsl:when>
          <xsl:otherwise>
            <xsl:apply-templates select="db:biblioref" mode="otherwise" />
          </xsl:otherwise>
        </xsl:choose>
        <xsl:value-of select="$style-citation/cs:suffix" />
      </bib:span>
    </xsl:variable>
    <!-- 
    create formatted output by running appropriate output mode on the temporary
    tree in the intermediate-citation variable 
    -->
    <xsl:choose>
      <xsl:when test="$output-format='latex'">
        <xsl:apply-templates select="$intermediate-citation" mode="output-latex" />
      </xsl:when>
      <xsl:when test="$output-format='xhtml'">
        <xsl:apply-templates select="$intermediate-citation" mode="output-xhtml" />
      </xsl:when>
    </xsl:choose>
  </xsl:template>
  <xsl:template match="db:biblioref" mode="otherwise">
    <xsl:apply-templates select="$style-citation">
      <xsl:with-param name="cite-ref" select="." as="node()" tunnel="yes" />
    </xsl:apply-templates>
    <xsl:if test="position() != last()">
      <xsl:value-of select="$style-citation/@delimiter" />
    </xsl:if>
  </xsl:template>
</xsl:stylesheet>