<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:dd="http://www.HopAndVineHull.co.uk/PastBeers"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                exclude-result-prefixes="dd"
                version="1.0" >

  <xsl:output method="html" indent="yes"/>
  
  <xsl:param name="Product" select="'beers'"/>
  <xsl:param name="Maker" select="'breweries'"/>
  <xsl:param name="ProductType" select="'Beer'"/>

  <xsl:variable name="alphabet"  select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>
  <xsl:variable name="firstHalf" select="'ABCDEFGHIJKL--------------'"/>

  <xsl:key name="ProductsByMakerInitial" 
           match="/dd:PastBeers/dd:Maker" 
           use="concat(dd:Product/@ProductType, '|' ,substring(@Maker, 1, 1))" />
  <xsl:key name="ProductsByMaker" 
           match="/dd:PastBeers/dd:Maker" 
           use="@Maker" />
  <xsl:key name="ProductsByMakerAndProduct" 
           match="/dd:PastBeers/dd:Maker/dd:Product" 
           use="concat(../@Maker, '|' , @Product, '|', @ABV)"/>

  <xsl:template match="dd:PastBeers">
    <div class="sinceOpening">
      <xsl:text>Since opening on 6 November 2006, </xsl:text>
      <br/>
      <xsl:text>we've sold </xsl:text>
      <xsl:value-of select="count(/dd:PastBeers/dd:Maker/dd:Product[@ProductType = $ProductType])"/>
      <xsl:text> different </xsl:text>
      <xsl:value-of select="$Product"/>
      <br/>
      <xsl:text> from </xsl:text>
      <xsl:value-of select="count(/dd:PastBeers/dd:Maker[dd:Product/@ProductType = $ProductType])"/>
      <xsl:text> </xsl:text>
      <xsl:value-of select="$Maker"/>
      <xsl:text>.</xsl:text>
    </div>

    <hr style="color: #800000; height: 1px;"/>

    <a name="top" style="text-decoration: none;"/>
    <xsl:for-each select="/dd:PastBeers/dd:Maker[generate-id(.) = generate-id(key('ProductsByMakerInitial', concat($ProductType, '|', substring(@Maker, 1, 1))))]">
      <xsl:if test="not(contains($alphabet, substring(@Maker, 1, 1)))">
        <a class="initialletter" href="#{substring(@Maker, 1, 1)}">
          <xsl:value-of select="substring(@Maker, 1, 1)"/>
        </a>
      </xsl:if>
    </xsl:for-each>

    <xsl:call-template name="alphabetical"/>
    
    <!-- Outer loop: maker's first letter -->
    <table class="productByMaker" cellpadding="0" cellspacing="0">
      <tr>
        <td class="productByMaker">
          <xsl:for-each select="/dd:PastBeers/dd:Maker[generate-id(.) = generate-id(key('ProductsByMakerInitial', concat($ProductType, '|', substring(@Maker, 1, 1))))]">
            <xsl:sort select="@Maker" />
            <xsl:if test="translate(substring(@Maker, 1, 1), $alphabet, $firstHalf) != '-'">
              <xsl:variable name="FirstLetter" select="substring(@Maker, 1, 1)"/>
              <div class="indexsection">
                <a name="{$FirstLetter}" class="indexsection">
                  <xsl:value-of select="$FirstLetter"/>
                </a>
                <a href="#top"><img class="top" src="../Images/History/top.gif"/></a>
              </div>

              <!-- Next loop: maker's name -->
              <xsl:for-each select="/dd:PastBeers/dd:Maker[dd:Product/@ProductType = $ProductType][starts-with(@Maker, $FirstLetter)][generate-id(.) = generate-id(key('ProductsByMaker', @Maker))]">
                <xsl:sort select="@Maker" />
                <xsl:call-template name="DisplayMaker"/>
              </xsl:for-each>
              
            </xsl:if>
          </xsl:for-each>
        </td>
        <td>&#160;&#160;&#160;</td>
        <td class="productByMaker">
          <xsl:for-each select="/dd:PastBeers/dd:Maker[generate-id(.) = generate-id(key('ProductsByMakerInitial', concat($ProductType, '|', substring(@Maker, 1, 1))))]">
            <xsl:sort select="@Maker" />
            <xsl:if test="translate(substring(@Maker, 1, 1), $alphabet, $firstHalf) = '-'">
              <xsl:variable name="FirstLetter" select="substring(@Maker, 1, 1)"/>

              <div class="indexsection">
                <a name="{$FirstLetter}" class="indexsection">
                  <xsl:value-of select="$FirstLetter"/>
                </a>
                <a href="#top"><img class="top" src="../Images/History/top.gif"/></a>
              </div>
              
              <xsl:for-each select="/dd:PastBeers/dd:Maker[dd:Product/@ProductType = $ProductType][starts-with(@Maker, $FirstLetter)][generate-id(.) = generate-id(key('ProductsByMaker', @Maker))]">
                <xsl:sort select="@Maker" />
                <xsl:call-template name="DisplayMaker"/>
              </xsl:for-each>
            </xsl:if>
          </xsl:for-each>
        </td>
      </tr>
    </table>
        
  </xsl:template>


  <xsl:template name="DisplayMaker">

    <div class="productByMakerMaker">
      <b>
        <xsl:choose>
          <xsl:when test="@URL != 'null'">
            <a href="{@URL}" class="maker">
              <xsl:value-of select="translate(@Maker, 
                                      'abcdefghijklmnopqrstuvwxyz', 
                                      'ABCDEFGHILKLMNOPQRSTUVWXYZ')" />
            </a>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="translate(@Maker, 
                                      'abcdefghijklmnopqrstuvwxyz', 
                                      'ABCDEFGHILKLMNOPQRSTUVWXYZ')" />
          </xsl:otherwise>
        </xsl:choose>
      </b>
      <i>
        <xsl:text> </xsl:text>
        <xsl:value-of select="@Location" />
      </i>
    </div>

    <!-- Inner loop, products by the current maker -->
    <xsl:variable name="Maker" select="@Maker"/>
    <xsl:for-each select="/dd:PastBeers/dd:Maker/dd:Product
                            [@ProductType = $ProductType]
                            [../@Maker = $Maker]
                            [count(. | key('ProductsByMakerAndProduct', concat($Maker, '|', @Product, '|', @ABV))[1]) = 1]">
      <xsl:sort select="@ABV"/>
      <xsl:sort select="@Product"/>

      <xsl:variable name="Product" select="@Product"/>
      <xsl:variable name="ABV" select="@ABV"/>

      <xsl:choose>
        <xsl:when test="@ProductType = 'Beer'">
          <img class="beerMugIndent" src="../Images/History/beermug.gif" alt="Beer Mug" />
        </xsl:when>
        <xsl:otherwise>
          <img class="beerMugIndent" src="../Images/History/cidermug.gif" alt="Cider Mug" />
        </xsl:otherwise>
      </xsl:choose>

      <xsl:text>&#160;</xsl:text>
        <xsl:value-of select="@Product" />
        <xsl:if test="@ABV != ''">
          <xsl:text> </xsl:text>
          <i>
            <xsl:value-of select="@ABV" />
            <xsl:text>% </xsl:text>
          </i>
        </xsl:if>
      <xsl:variable name="count"
                    select="count(/dd:PastBeers/dd:Maker[@Maker = $Maker]
                                  /dd:Product[@ProductType = $ProductType and @Product = $Product and @ABV = $ABV]
                                  /dd:Appearance)"/>
        <xsl:choose>
          <xsl:when test="$count = 2">
            <xsl:text> (twice)</xsl:text>
          </xsl:when>
          <xsl:when test="$count > 2">
            <xsl:text> (</xsl:text>
            <xsl:value-of select="$count"/>
            <xsl:text> times)</xsl:text>
          </xsl:when>
        </xsl:choose>
        <br/>
    </xsl:for-each>
    <br/>

  </xsl:template>


  <xsl:template name="alphabetical">
    <xsl:param name="the_alphabet" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>

    <xsl:if test="$the_alphabet != ''">
      
      <xsl:variable name="letter" select="substring($the_alphabet, 1, 1)" />

      <xsl:choose>
        <xsl:when test="/dd:PastBeers/dd:Maker[starts-with(@Maker, $letter)][dd:Product/@ProductType = $ProductType]">
          <a class="initialletter" href="#{$letter}">
            <xsl:value-of select="$letter"/>
          </a>
        </xsl:when>
        <xsl:otherwise>
          <span class="initialletter">
            <xsl:value-of select="$letter"/>
          </span>
        </xsl:otherwise>
      </xsl:choose>


      <xsl:call-template name="alphabetical">
        <xsl:with-param name="the_alphabet" select="substring($the_alphabet, 2)" />
      </xsl:call-template>
      
    </xsl:if>
  </xsl:template>


</xsl:stylesheet>
