<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fn="http://www.w3.org/2005/xpath-functions" >

  <xsl:template name="navigation.row">
    <xsl:param name="rootNode"/>
    <xsl:param name="CSSLayoutClass"/>
    <!-- read xml item entries and create the link bar -->
    <xsl:for-each select="$rootNode/item">
      <xsl:call-template name="addLink">
        <xsl:with-param name="CSSLayoutClass" select="$CSSLayoutClass"/>
      </xsl:call-template>
    </xsl:for-each>
  </xsl:template>

  <xsl:template name="addLink">
    <xsl:param name="createSiteMap"/>
    <xsl:param name="CSSLayoutClass"/>
    <xsl:choose>

      <!-- item @type is "intern" -> add the web application path before the link -->
      <xsl:when test="@type = 'intern'">
        <a class="{$CSSLayoutClass}">
          <!--target -->
          <xsl:attribute name="target">
            <xsl:value-of select="@target"/>
          </xsl:attribute>
          <!--add lastPage=@href to URL -->
          <xsl:variable name="href_intern_tmp">
            <xsl:call-template name="UrlSetParam">
              <xsl:with-param name="url" select="concat($WebApplicationBaseURL,substring-after(@href,'/'))"/>
              <xsl:with-param name="par" select="'XSL.lastPage.SESSION'"/>
              <xsl:with-param name="value" select="@href"/>
            </xsl:call-template>
          </xsl:variable>
          <xsl:attribute name="href">
            <xsl:call-template name="UrlAddSession">
              <xsl:with-param name="url" select="$href_intern_tmp"/>
            </xsl:call-template>
          </xsl:attribute>
          <xsl:choose>
            <xsl:when test="@style = 'bold'">
              <span style="font-weight:bold;">
                <xsl:choose>
                  <xsl:when test="./label[lang($CurrentLang)] != ''">
                    <xsl:value-of select="./label[lang($CurrentLang)]"/>
                  </xsl:when>
                  <xsl:otherwise>
                    <xsl:value-of select="./label[lang($DefaultLang)]"/>
                  </xsl:otherwise>
                </xsl:choose>
              </span>
            </xsl:when>
            <xsl:otherwise>
              <xsl:choose>
                <xsl:when test="./label[lang($CurrentLang)] != ''">
                  <xsl:value-of select="./label[lang($CurrentLang)]"/>
                </xsl:when>
                <xsl:otherwise>
                  <xsl:value-of select="./label[lang($DefaultLang)]"/>
                </xsl:otherwise>
              </xsl:choose>
            </xsl:otherwise>
          </xsl:choose>
        </a>
      </xsl:when>
      <!-- item @type is extern -->
      <xsl:otherwise>
        <a class="{$CSSLayoutClass}">
          <xsl:attribute name="target">
            <xsl:value-of select="@target"/>
          </xsl:attribute>

          <!-- set attribute @href -->
          <xsl:variable name="href_temp">
            <xsl:choose>

              <!-- build $webapplicationbaseurl before link in case @href doesn't start with 'http' & co. -->
              <xsl:when test=" starts-with(@href,'http:') or starts-with(@href,'https:') or starts-with(@href,'mailto:') or starts-with(@href,'ftp:')">
                <xsl:value-of select="@href"/>
              </xsl:when>

              <!-- link is relative and not starting with http ... -->
              <xsl:otherwise>
                <xsl:call-template name="UrlSetParam">
                  <xsl:with-param name="url" select="concat($WebApplicationBaseURL,substring-after(@href,'/'))"/>
                  <xsl:with-param name="par" select="'XSL.lastPage.SESSION'"/>
                  <xsl:with-param name="value" select="fn:encode-for-uri(@href)"/>
                </xsl:call-template>
              </xsl:otherwise>
            </xsl:choose>
          </xsl:variable>
          <!--add session -->
          <xsl:variable name="href_temp2">
            <xsl:call-template name="UrlAddSession">
              <xsl:with-param name="url" select="$href_temp"/>
            </xsl:call-template>
          </xsl:variable>
          <xsl:attribute name="href">
            <xsl:choose>
              <!-- in case of $href_temp contains 'servlet' append 'lang=$currentlang' -->
              <xsl:when test=" contains($href_temp,'/servlets/') ">
                <xsl:call-template name="UrlSetParam">
                  <xsl:with-param name="url" select="$href_temp2"/>
                  <xsl:with-param name="par" select="'lang'"/>
                  <xsl:with-param name="value" select="$CurrentLang"/>
                </xsl:call-template>
              </xsl:when>
              <xsl:otherwise>
                <xsl:value-of select="$href_temp2"/>
              </xsl:otherwise>
            </xsl:choose>
          </xsl:attribute>
          <!-- end: set attribute @href -->
          <xsl:choose>
            <xsl:when test="@style = 'bold'">
              <span style="font-weight:bold;">
                <xsl:choose>
                  <xsl:when test="./label[lang($CurrentLang)] != ''">
                    <xsl:value-of select="./label[lang($CurrentLang)]"/>
                  </xsl:when>
                  <xsl:otherwise>
                    <xsl:value-of select="./label[lang($DefaultLang)]"/>
                  </xsl:otherwise>
                </xsl:choose>
              </span>
            </xsl:when>
            <xsl:otherwise>
              <xsl:choose>
                <xsl:when test="./label[lang($CurrentLang)] != ''">
                  <xsl:value-of select="./label[lang($CurrentLang)]"/>
                </xsl:when>
                <xsl:otherwise>
                  <xsl:value-of select="./label[lang($DefaultLang)]"/>
                </xsl:otherwise>
              </xsl:choose>
            </xsl:otherwise>
          </xsl:choose>
        </a>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <xsl:template name="navbar">
    <xsl:param name="rootNode"/>
    <ul class="navbar-nav">
      <xsl:for-each select="$rootNode/item">
        <li class="nav-item">
          <xsl:if test="@userNot = $CurrentUser">
            <xsl:attribute name="hidden"/>
            <xsl:attribute name="class">hidden</xsl:attribute>
          </xsl:if>
          <xsl:variable name="top_link">
            <xsl:value-of select="@href"/>
          </xsl:variable>
          <a class="nav-link" href="{$top_link}">
            <xsl:if test="./label[lang($CurrentLang)] != ''">
              <xsl:value-of select="./label[lang($CurrentLang)]"/>
            </xsl:if>
          </a>
        </li>
      </xsl:for-each>
    </ul>
  </xsl:template>

<!--
  <xsl:template name="langalt">
    <xsl:if test="$CurrentLang != 'de'">
      <link>
        <xsl:call-template name="langref">
          <xsl:with-param name="lang" select="'de'"/>
          <xsl:with-param name="url" select="$RequestURL"/>
          <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=de')"/>
        </xsl:call-template>
      </link>
    </xsl:if>
    <xsl:if test="$CurrentLang != 'en'">
      <link>
        <xsl:call-template name="langref">
          <xsl:with-param name="lang" select="'en'"/>
          <xsl:with-param name="url" select="$RequestURL"/>
          <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=en')"/>
        </xsl:call-template>
      </link>
    </xsl:if>
    <xsl:if test="$CurrentLang != 'es'">
      <link>
        <xsl:call-template name="langref">
          <xsl:with-param name="lang" select="'es'"/>
          <xsl:with-param name="url" select="$RequestURL"/>
          <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=es')"/>
        </xsl:call-template>
      </link>
    </xsl:if>
    <xsl:if test="$CurrentLang != 'fr'">
      <link>
        <xsl:call-template name="langref">
          <xsl:with-param name="lang" select="'fr'"/>
          <xsl:with-param name="url" select="$RequestURL"/>
          <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=fr')"/>
        </xsl:call-template>
      </link>
    </xsl:if>
    <xsl:if test="$CurrentLang != 'it'">
      <link>
        <xsl:call-template name="langref">
          <xsl:with-param name="lang" select="'it'"/>
          <xsl:with-param name="url" select="$RequestURL"/>
          <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=it')"/>
        </xsl:call-template>
      </link>
    </xsl:if>
    <xsl:if test="$CurrentLang != 'ja'">
      <link>
        <xsl:call-template name="langref">
          <xsl:with-param name="lang" select="'ja'"/>
          <xsl:with-param name="url" select="$RequestURL"/>
          <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=ja')"/>
        </xsl:call-template>
      </link>
    </xsl:if>
  </xsl:template>
  -->

  <xsl:template name="langchooser">
    <xsl:param name="lang"/>
    <xsl:param name="url"/>
    <xsl:param name="alternative"/>
    <xsl:call-template name="langref">
      <xsl:with-param name="lang" select="$lang"/>
      <xsl:with-param name="url" select="$url"/>
      <xsl:with-param name="alternative" select="concat($url, '?lang=', $lang)"/>
    </xsl:call-template>
    <xsl:attribute name="title">
        <xsl:value-of select="document(concat('i18n:module.dptbase.common.navi.lang.',$lang))/i18n/text()"/>
    </xsl:attribute>
    <xsl:value-of select="document(concat('i18n:module.dptbase.common.navi.lang.',$lang))/i18n/text()"/>
  </xsl:template>

  <xsl:template name="langref">
    <xsl:param name="lang"/>
    <xsl:param name="url"/>
    <xsl:param name="alternative"/>
    <xsl:variable name="newurl">
      <xsl:call-template name="UrlSetParam">
        <xsl:with-param name="url" select="$url"/>
        <xsl:with-param name="par" select="'lang'"/>
        <xsl:with-param name="value" select="$lang"/>
      </xsl:call-template>
    </xsl:variable>
    <xsl:attribute name="href">
    <xsl:choose>
      <xsl:when test="contains($newurl,'MCR:ERROR')">
        <xsl:call-template name="UrlAddSession">
          <xsl:with-param name="url" select="$alternative"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:call-template name="UrlAddSession">
          <xsl:with-param name="url" select="$newurl"/>
        </xsl:call-template>
      </xsl:otherwise>
    </xsl:choose>
    </xsl:attribute>
    <xsl:attribute name="hreflang">
      <xsl:value-of select="$lang"/>
    </xsl:attribute>
    <xsl:attribute name="rel">
      <xsl:value-of select="'alternate'"/>
    </xsl:attribute>
  </xsl:template>

  <xsl:template name="langmenu">
    <xsl:param name="rootNode"/>
    <ul class="navbar-nav">
      <li class="nav-item dropdown languages">
        <a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">
          <span class="fas fa-globe" aria-hidden="true"/>
          <span>
            <xsl:value-of select="document(concat('i18n:module.dptbase.common.navi.lang.',$CurrentLang))/i18n/text()"/>
          </span>
          <b class="caret"/>
        </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a class="dropdown-item">
            <xsl:call-template name="langchooser">
              <xsl:with-param name="lang" select="'de'"/>
              <xsl:with-param name="url" select="$RequestURL"/>
              <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=de')"/>
            </xsl:call-template>
          </a>
          <a class="dropdown-item">
            <xsl:call-template name="langchooser">
              <xsl:with-param name="lang" select="'en'"/>
              <xsl:with-param name="url" select="$RequestURL"/>
              <xsl:with-param name="alternative" select="concat($RequestURL, '?lang=de')"/>
            </xsl:call-template>
          </a>
        </div>
      </li>
    </ul>
  </xsl:template>

  <xsl:template match="TOC | toc">
    <xsl:for-each select="$loaded_navigation_xml//item[@href=$browserAddress]">
      <ul>
        <xsl:for-each select="child::item">
          <li>
            <xsl:call-template name="addLink"/>
          </li>
        </xsl:for-each>
      </ul>
    </xsl:for-each>
  </xsl:template>

</xsl:stylesheet>