hugo-theme-wondermod/layouts/partials/header.html

{{- if (eq .Site.Params.defaultTheme "light") }}
<script>
    if (localStorage.getItem("pref-theme") === "dark") {
        document.body.classList.add('dark');
    } else if (localStorage.getItem("pref-theme") === "light") {
        document.body.classList.remove('dark')
    } else {
        document.body.classList.remove('dark')
    }

</script>
{{- else if (eq .Site.Params.defaultTheme "dark") }}
<script>
    if (localStorage.getItem("pref-theme") === "dark") {
        document.body.classList.add('dark');
    } else if (localStorage.getItem("pref-theme") === "light") {
        document.body.classList.remove('dark')
    } else {
        document.body.classList.add('dark');
    }

</script>
{{- else if (or (eq .Site.Params.defaultTheme "auto") (not .Site.Params.disableThemeToggle) ) }}
<script>
    if (localStorage.getItem("pref-theme") === "dark") {
        document.body.classList.add('dark');
    } else if (localStorage.getItem("pref-theme") === "light") {
        document.body.classList.remove('dark')
    } else if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
        document.body.classList.add('dark');
    }

</script>
{{- end }}
<noscript>
    <style type="text/css">
        .theme-toggle,
        .top-link {
            display: none;
        }

    </style>
</noscript>
<header class="header">
    <nav class="nav">
        <div class="logo">
            <a href="{{ "" | absLangURL }}" accesskey="h">
                {{- if .Site.Params.label.icon }}
                <img src="{{- .Site.Params.label.icon -}}" alt="logo" aria-label="logo"
                    height="{{- .Site.Params.label.iconHeight | default "30px" -}}">
                {{- end -}}
                {{- .Site.Params.label.text | default .Site.Title -}}
            </a>
            <span class="logo-switches">
                {{- if (not .Site.Params.disableThemeToggle) }}
                <span class="theme-toggle">
                    <a id="theme-toggle" accesskey="t">
                        <svg id="moon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"
                            fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
                            stroke-linejoin="round">
                            <path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path>
                        </svg>
                        <svg id="sun" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"
                            fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
                            stroke-linejoin="round">
                            <circle cx="12" cy="12" r="5"></circle>
                            <line x1="12" y1="1" x2="12" y2="3"></line>
                            <line x1="12" y1="21" x2="12" y2="23"></line>
                            <line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line>
                            <line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line>
                            <line x1="1" y1="12" x2="3" y2="12"></line>
                            <line x1="21" y1="12" x2="23" y2="12"></line>
                            <line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line>
                            <line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line>
                        </svg>
                    </a>
                </span>
                {{- end}}
                {{ $lang := .Lang}}
                {{- with $.Site.Home.AllTranslations }}
                <span class="lang-switch">
                    <span>|</span>
                    <ul>
                        {{- range . -}}
                        {{- if ne $lang .Lang }}
                        <li>
                            <a href="{{- .Permalink -}}" title="{{ .Language.LanguageName | default .Lang | humanize }}"
                                aria-label="{{ .Language.LanguageName | default .Lang | humanize }}">
                                {{- if (and $.Site.Params.displayFullLangName (.Language.LanguageName)) }}
                                {{- .Language.LanguageName | emojify | humanize -}}
                                {{- else }}
                                {{- .Lang | humanize -}}
                                {{- end -}}
                            </a>
                        </li>
                        {{- end -}}
                        {{- end}}
                    </ul>
                </span>
                {{- end }}
            </span>
        </div>
        {{- $currentPage := . }}
        <ul class="menu" id="menu" onscroll="menu_on_scroll()">
            {{- range .Site.Menus.main }}
            {{- $menu_item_url := .URL | relLangURL }}
            {{- $page_url:= $currentPage.RelPermalink | relLangURL }}
            <li>
                <a href="{{ .URL | absLangURL }}">
                    <span {{- if eq $menu_item_url $page_url }}
                        {{- /* the menu item links to the current page (with relLangURL) */}} class="active" {{- end }}>
                        {{ .Name }}
                    </span>
                </a>
            </li>
            {{- end -}}
        </ul>
    </nav>
</header>