<!--
  Copyright (C) Igor Sysoev
  Copyright (C) Nginx, Inc.
  -->

X:stylesheet {

X:template = "menu/item" {

    <!--
      --  variables are not allowed in a template match predicate,
      --  therefore, we have to use ugly "if"s instead of elegant
      --     "menu/item[@href = $LINK]", etc.
      -->

    X:if "@href = $LINK" {
        X:if "$YEAR and @href='/'" {
            <a href="./"> news </a> <br/>
        } else {
            !{ normalize-space(text()) }<br/>
        }

    } else {

        <!--
          -- If a menu item has the switchlang attribute, then it will point
          -- to the same document in the specified language.
          -->
        X:if "$TRANS and @switchlang" {

            <!--
              -- Check if list of available translations ($TRANS) contains
              -- the language we are going to generate link to.
              -- If yes - generate link, otherwise just name the language.
              -->
            X:if "contains($TRANS, @switchlang)" {
                <a>
                X:attribute "href" {
                    !{ concat($ROOT, '/', @switchlang, '/',
                        substring-after($LINK, concat('/', $LANG, '/'))) }
                }
                !{ normalize-space(text()) }
                </a>

            } else {
                <a class="notrans"> !{ normalize-space(text()) } </a>
            }
        } else {

            <a>
            X:attribute "href" {

                X:if "starts-with(@href, $DIRNAME)" {
                    X:if "substring-after(@href, $DIRNAME) = ''" {
                        ./
                    } else {
                        !{ substring-after(@href, $DIRNAME) }
                    }

                } else {
                    !{ concat($ROOT, @href) }
                }
            }
            !{ normalize-space(text()) }
            </a>

            X:if "@lang" { X:text { [} !{@lang} X:text {]}}
        }

        <br/>
    }
}


X:template = "menu/item[@year]" {
    X:if "$YEAR or $LINK='/'" {
        X:if "$YEAR=@year" {
            !{@year} <br/>
        } else {
            X:if "@href" { <a href="{@href}"> !{@year} </a> }
            <br/>
        }
    }
}


X:template = "menu/item[starts-with(@href, 'http://') or starts-with(@href, 'https://')]" {
    <a href="{@href}"> !{ normalize-space(text()) } </a>
    X:if "@lang" { X:text { [} !{@lang} X:text {]}}
    <br/>
}


X:template = "menu/item[not(@href) and not(@year)]" {
    !{ normalize-space(text()) } <br/>
}

}