Fix hugo-book theme deprecation errors

errors and warnings fixed are:

```
WARN  deprecated: resources.ToCSS was deprecated in Hugo v0.128.0 and
will be removed in a future release. Use css.Sass instead.
WARN deprecated: .Sites.First was deprecated in Hugo v0.127.0 and will be
removed in a future release. Use .Sites.Default instead.
ERROR deprecated: .Site.IsMultiLingual was deprecated in Hugo v0.124.0 and
will be removed in Hugo 0.137.0. Use hugo.IsMultilingual instead.
```

Fixes issue #1775

docs/themes/hugo-book/.github/workflows/main.yml

@@ -9,7 +9,7 @@ jobs:
       matrix:
         hugo-version:
           - 'latest'
-          - '0.79.0'
+          - '0.124.0'
     steps:
       - uses: actions/checkout@v4
         with:

docs/themes/hugo-book/README.md

@@ -60,7 +60,7 @@ Start with initializing hugo modules, if not done yet:
 hugo mod init github.com/repo/path
 ```
 
-Navigate to your hugo project root and add [module] section to your `config.toml`:
+Navigate to your hugo project root and add [module] section to your `hugo.toml`:
 
 ```toml
 [module]
@@ -140,7 +140,7 @@ A blog is not the primary usecase of this theme, so it has only minimal features
 
 ### Site Configuration
 
-There are a few configuration options that you can add to your `config.toml` file.  
+There are a few configuration options that you can add to your `hugo.toml` file.  
 You can also see the `yaml` example [here](https://github.com/alex-shpak/hugo-book/blob/master/exampleSite/config.yaml).
 
 ```toml

docs/themes/hugo-book/assets/search.js

@@ -7,11 +7,21 @@
 (function () {
   const searchDataURL = '{{ $searchData.RelPermalink }}';
   const indexConfig = Object.assign({{ $searchConfig }}, {
-    doc: {
-      id: 'id',
-      field: ['title', 'content'],
-      store: ['title', 'href', 'section']
-    }
+    includeScore: true,
+    useExtendedSearch: true,
+    fieldNormWeight: 1.5,
+    threshold: 0.2,
+    ignoreLocation: true,
+    keys: [
+      {
+        name: 'title',
+        weight: 0.7
+      },
+      {
+        name: 'content',
+        weight: 0.3
+      }
+    ]
   });
 
   const input = document.querySelector('#book-search-input');
@@ -63,8 +73,7 @@
     fetch(searchDataURL)
       .then(pages => pages.json())
       .then(pages => {
-        window.bookSearchIndex = FlexSearch.create('balance', indexConfig);
-        window.bookSearchIndex.add(pages);
+        window.bookSearchIndex = new Fuse(pages, indexConfig);
       })
       .then(() => input.required = false)
       .then(search);
@@ -79,14 +88,14 @@
       return;
     }
 
-    const searchHits = window.bookSearchIndex.search(input.value, 10);
+    const searchHits = window.bookSearchIndex.search(input.value).slice(0,10);
     searchHits.forEach(function (page) {
       const li = element('<li><a href></a><small></small></li>');
       const a = li.querySelector('a'), small = li.querySelector('small');
 
-      a.href = page.href;
-      a.textContent = page.title;
-      small.textContent = page.section;
+      a.href = page.item.href;
+      a.textContent = page.item.title;
+      small.textContent = page.item.section;
 
       results.appendChild(li);
     });

docs/themes/hugo-book/exampleSite/resources/_gen/assets/book.scss_e129fe35b8d0a70789c8a08429469073.json

@@ -0,0 +1 @@
+{"Target":"book.min.309b7ed028807cdb68d8d61e26d609f48369c098dbf5e4d8c0dcf4cdf49feafc.css","MediaType":"text/css","Data":{"Integrity":"sha256-MJt+0CiAfNto2NYeJtYJ9INpwJjb9eTYwNz0zfSf6vw="}}

docs/themes/hugo-book/layouts/partials/docs/brand.html

@@ -1,5 +1,8 @@
 <h2 class="book-brand">
-  <a class="flex align-center" href="{{ cond (not .Site.Home.File) .Sites.First.Home.RelPermalink .Site.Home.RelPermalink }}">
+  <a
+    class="flex align-center"
+    href="{{ cond (not .Site.Home.File) .Sites.Default.Home.RelPermalink .Site.Home.RelPermalink }}"
+  >
     {{- with .Site.Params.BookLogo -}}
     <img src="{{ . | relURL }}" alt="Logo" />
     {{- end -}}

docs/themes/hugo-book/layouts/partials/docs/date.html

@@ -3,4 +3,4 @@
   Usage: partial "docs/date" (dict "Date" .Date "Format" .Site.Params.BookDateFormat)
 -->
 {{- $format := default "January 2, 2006" .Format -}}
-{{- return (.Date.Format $format) -}}
+{{- return (time.Format $format .Date) -}}

docs/themes/hugo-book/layouts/partials/docs/html-head.html

@@ -23,13 +23,13 @@
 {{- end -}}
 
 <!-- Theme stylesheet, you can customize scss by creating `assets/custom.scss` in your website -->
-{{- $styles := resources.Get "book.scss" | resources.ExecuteAsTemplate "book.scss" . | resources.ToCSS | resources.Minify | resources.Fingerprint }}
+{{- $styles := resources.Get "book.scss" | resources.ExecuteAsTemplate "book.scss" . | css.Sass | resources.Minify | resources.Fingerprint }}
 <link rel="stylesheet" href="{{ $styles.RelPermalink }}" {{ template "integrity" $styles }}>
 
 {{- if default true .Site.Params.BookSearch -}}
   {{- $searchJSFile := printf "%s.search.js" .Language.Lang }}
   {{- $searchJS := resources.Get "search.js" | resources.ExecuteAsTemplate $searchJSFile . | resources.Minify | resources.Fingerprint }}
-  <script defer src="{{ "flexsearch.min.js" | relURL }}"></script>
+  <script defer src="{{ "fuse.min.js" | relURL }}"></script>
   <script defer src="{{ $searchJS.RelPermalink }}" {{ template "integrity" $searchJS }}></script>
 {{ end -}}
 

docs/themes/hugo-book/layouts/partials/docs/menu.html

@@ -1,7 +1,7 @@
 <nav>
 {{ partial "docs/brand" . }}
 {{ partial "docs/search" . }}
-{{ if .Site.IsMultiLingual }}
+{{ if hugo.IsMultilingual }}
   {{ partial "docs/languages" . }}
 {{ end }}
 

docs/themes/hugo-book/layouts/partials/docs/search.html

@@ -1,7 +1,8 @@
 {{ if default true .Site.Params.BookSearch }}
-<div class="book-search">
+<div class="book-search hidden">
   <input type="text" id="book-search-input" placeholder="{{ i18n "Search" }}" aria-label="{{ i18n "Search" }}" maxlength="64" data-hotkeys="s/" />
   <div class="book-search-spinner hidden"></div>
   <ul id="book-search-results"></ul>
 </div>
+<script>document.querySelector(".book-search").classList.remove("hidden")</script>
 {{ end }}

docs/themes/hugo-book/resources/_gen/assets/book.scss_e129fe35b8d0a70789c8a08429469073.content

@@ -0,0 +1 @@
+@charset "UTF-8";:root{--gray-100:#f8f9fa;--gray-200:#e9ecef;--gray-500:#adb5bd;--color-link:#0055bb;--color-visited-link:#8440f1;--body-background:white;--body-font-color:black;--icon-filter:none;--hint-color-info:#6bf;--hint-color-warning:#fd6;--hint-color-danger:#f66}/*!normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css*/html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}main{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;line-height:1.15;margin:0}button,input{overflow:visible}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner,[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner{border-style:none;padding:0}button:-moz-focusring,[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details{display:block}summary{display:list-item}template{display:none}[hidden]{display:none}.flex{display:flex}.flex-auto{flex:auto}.flex-even{flex:1 1}.flex-wrap{flex-wrap:wrap}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.align-center{align-items:center}.mx-auto{margin:0 auto}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.hidden{display:none}input.toggle{height:0;width:0;overflow:hidden;opacity:0;position:absolute}.clearfix::after{content:"";display:table;clear:both}html{font-size:16px;scroll-behavior:smooth;touch-action:manipulation}body{min-width:20rem;color:var(--body-font-color);background:var(--body-background);letter-spacing:.33px;font-weight:400;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;box-sizing:border-box}body *{box-sizing:inherit}h1,h2,h3,h4,h5{font-weight:400}a{text-decoration:none;color:var(--color-link)}img{vertical-align:baseline}:focus{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}aside nav ul{padding:0;margin:0;list-style:none}aside nav ul li{margin:1em 0;position:relative}aside nav ul a{display:block}aside nav ul a:hover{opacity:.5}aside nav ul ul{padding-inline-start:1rem}ul.pagination{display:flex;justify-content:center;list-style-type:none;padding-inline-start:0}ul.pagination .page-item a{padding:1rem}.container{max-width:80rem;margin:0 auto}.book-icon{filter:var(--icon-filter)}.book-brand{margin-top:0;margin-bottom:1rem}.book-brand img{height:1.5em;width:1.5em;margin-inline-end:.5rem}.book-menu{flex:0 0 16rem;font-size:.875rem}.book-menu .book-menu-content{width:16rem;padding:1rem;background:var(--body-background);position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-menu a,.book-menu label{color:inherit;cursor:pointer;word-wrap:break-word}.book-menu a.active{color:var(--color-link)}.book-menu input.toggle+label+ul{display:none}.book-menu input.toggle:checked+label+ul{display:block}.book-menu input.toggle+label::after{content:"▸"}.book-menu input.toggle:checked+label::after{content:"▾"}body[dir=rtl] .book-menu input.toggle+label::after{content:"◂"}body[dir=rtl] .book-menu input.toggle:checked+label::after{content:"▾"}.book-section-flat{margin:2rem 0}.book-section-flat>a,.book-section-flat>span,.book-section-flat>label{font-weight:bolder}.book-section-flat>ul{padding-inline-start:0}.book-page{min-width:20rem;flex-grow:1;padding:1rem}.book-post{margin-bottom:3rem}.book-header{display:none;margin-bottom:1rem}.book-header label{line-height:0}.book-header img.book-icon{height:1.5em;width:1.5em}.book-search{position:relative;margin:1rem 0;border-bottom:1px solid transparent}.book-search input{width:100%;padding:.5rem;border:0;border-radius:.25rem;background:var(--gray-100);color:var(--body-font-color)}.book-search input:required+.book-search-spinner{display:block}.book-search .book-search-spinner{position:absolute;top:0;margin:.5rem;margin-inline-start:calc(100% - 1.5rem);width:1rem;height:1rem;border:1px solid transparent;border-top-color:var(--body-font-color);border-radius:50%;animation:spin 1s ease infinite}@keyframes spin{100%{transform:rotate(360deg)}}.book-search small{opacity:.5}.book-toc{flex:0 0 16rem;font-size:.75rem}.book-toc .book-toc-content{width:16rem;padding:1rem;position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-toc img{height:1em;width:1em}.book-toc nav>ul>li:first-child{margin-top:0}.book-footer{padding-top:1rem;font-size:.875rem}.book-footer img{height:1em;width:1em;margin-inline-end:.5rem}.book-comments{margin-top:1rem}.book-languages{margin-block-end:2rem}.book-languages .book-icon{height:1em;width:1em;margin-inline-end:.5em}.book-languages ul{padding-inline-start:1.5em}.book-menu-content,.book-toc-content,.book-page,.book-header aside,.markdown{transition:.2s ease-in-out;transition-property:transform,margin,opacity,visibility;will-change:transform,margin,opacity}@media screen and (max-width:56rem){#menu-control,#toc-control{display:inline}.book-menu{visibility:hidden;margin-inline-start:-16rem;font-size:16px;z-index:1}.book-toc{display:none}.book-header{display:block}#menu-control:focus~main label[for=menu-control]{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}#menu-control:checked~main .book-menu{visibility:initial}#menu-control:checked~main .book-menu .book-menu-content{transform:translateX(16rem);box-shadow:0 0 .5rem rgba(0,0,0,.1)}#menu-control:checked~main .book-page{opacity:.25}#menu-control:checked~main .book-menu-overlay{display:block;position:absolute;top:0;bottom:0;left:0;right:0}#toc-control:focus~main label[for=toc-control]{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}#toc-control:checked~main .book-header aside{display:block}body[dir=rtl] #menu-control:checked~main .book-menu .book-menu-content{transform:translateX(-16rem)}}@media screen and (min-width:80rem){.book-page,.book-menu .book-menu-content,.book-toc .book-toc-content{padding:2rem 1rem}}@font-face{font-family:roboto;font-style:normal;font-weight:400;font-display:swap;src:local(""),url(fonts/roboto-v27-latin-regular.woff2)format("woff2"),url(fonts/roboto-v27-latin-regular.woff)format("woff")}@font-face{font-family:roboto;font-style:normal;font-weight:700;font-display:swap;src:local(""),url(fonts/roboto-v27-latin-700.woff2)format("woff2"),url(fonts/roboto-v27-latin-700.woff)format("woff")}@font-face{font-family:roboto mono;font-style:normal;font-weight:400;font-display:swap;src:local(""),url(fonts/roboto-mono-v13-latin-regular.woff2)format("woff2"),url(fonts/roboto-mono-v13-latin-regular.woff)format("woff")}body{font-family:roboto,sans-serif}code{font-family:roboto mono,monospace}@media print{.book-menu,.book-footer,.book-toc{display:none}.book-header,.book-header aside{display:block}main{display:block!important}}.markdown{line-height:1.6}.markdown>:first-child{margin-top:0}.markdown h1,.markdown h2,.markdown h3,.markdown h4,.markdown h5,.markdown h6{font-weight:400;line-height:1;margin-top:1.5em;margin-bottom:1rem}.markdown h1 a.anchor,.markdown h2 a.anchor,.markdown h3 a.anchor,.markdown h4 a.anchor,.markdown h5 a.anchor,.markdown h6 a.anchor{opacity:0;font-size:.75em;vertical-align:middle;text-decoration:none}.markdown h1:hover a.anchor,.markdown h1 a.anchor:focus,.markdown h2:hover a.anchor,.markdown h2 a.anchor:focus,.markdown h3:hover a.anchor,.markdown h3 a.anchor:focus,.markdown h4:hover a.anchor,.markdown h4 a.anchor:focus,.markdown h5:hover a.anchor,.markdown h5 a.anchor:focus,.markdown h6:hover a.anchor,.markdown h6 a.anchor:focus{opacity:initial}.markdown h4,.markdown h5,.markdown h6{font-weight:bolder}.markdown h5{font-size:.875em}.markdown h6{font-size:.75em}.markdown b,.markdown optgroup,.markdown strong{font-weight:bolder}.markdown a{text-decoration:none}.markdown a:hover{text-decoration:underline}.markdown a:visited{color:var(--color-visited-link)}.markdown img{max-width:100%;height:auto}.markdown code{direction:ltr;unicode-bidi:embed;padding:0 .25rem;background:var(--gray-200);border-radius:.25rem;font-size:.875em}.markdown pre{direction:ltr;unicode-bidi:embed;padding:1rem;background:var(--gray-100);border-radius:.25rem;overflow-x:auto}.markdown pre code{padding:0;background:0 0}.markdown p{word-wrap:break-word}.markdown blockquote{margin:1rem 0;padding:.5rem 1rem .5rem .75rem;border-inline-start:.25rem solid var(--gray-200);border-radius:.25rem}.markdown blockquote :first-child{margin-top:0}.markdown blockquote :last-child{margin-bottom:0}.markdown table{overflow:auto;display:block;border-spacing:0;border-collapse:collapse;margin-top:1rem;margin-bottom:1rem}.markdown table tr th,.markdown table tr td{padding:.5rem 1rem;border:1px solid var(--gray-200)}.markdown table tr:nth-child(2n){background:var(--gray-100)}.markdown hr{height:1px;border:none;background:var(--gray-200)}.markdown ul,.markdown ol{padding-inline-start:2rem;word-wrap:break-word}.markdown dl dt{font-weight:bolder;margin-top:1rem}.markdown dl dd{margin-inline-start:0;margin-bottom:1rem}.markdown .highlight{direction:ltr;unicode-bidi:embed}.markdown .highlight table tr td:nth-child(1) pre{margin:0;padding-inline-end:0}.markdown .highlight table tr td:nth-child(2) pre{margin:0;padding-inline-start:0}.markdown details{padding:1rem;border:1px solid var(--gray-200);border-radius:.25rem}.markdown details summary{line-height:1;padding:1rem;margin:-1rem;cursor:pointer}.markdown details[open] summary{margin-bottom:0}.markdown figure{margin:1rem 0}.markdown figure figcaption p{margin-top:0}.markdown-inner>:first-child{margin-top:0}.markdown-inner>:last-child{margin-bottom:0}.markdown .book-expand{margin-top:1rem;margin-bottom:1rem;border:1px solid var(--gray-200);border-radius:.25rem;overflow:hidden}.markdown .book-expand .book-expand-head{background:var(--gray-100);padding:.5rem 1rem;cursor:pointer}.markdown .book-expand .book-expand-content{display:none;padding:1rem}.markdown .book-expand input[type=checkbox]:checked+.book-expand-content{display:block}.markdown .book-tabs{margin-top:1rem;margin-bottom:1rem;border:1px solid var(--gray-200);border-radius:.25rem;overflow:hidden;display:flex;flex-wrap:wrap}.markdown .book-tabs label{display:inline-block;padding:.5rem 1rem;border-bottom:1px transparent;cursor:pointer}.markdown .book-tabs .book-tabs-content{order:999;width:100%;border-top:1px solid var(--gray-100);padding:1rem;display:none}.markdown .book-tabs input[type=radio]:checked+label{border-bottom:1px solid var(--color-link)}.markdown .book-tabs input[type=radio]:checked+label+.book-tabs-content{display:block}.markdown .book-tabs input[type=radio]:focus+label{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}.markdown .book-columns{margin-left:-1rem;margin-right:-1rem}.markdown .book-columns>div{margin:1rem 0;min-width:10rem;padding:0 1rem}.markdown a.book-btn{display:inline-block;font-size:.875rem;color:var(--color-link);line-height:2rem;padding:0 1rem;border:1px solid var(--color-link);border-radius:.25rem;cursor:pointer}.markdown a.book-btn:hover{text-decoration:none}.markdown .book-hint.info{border-color:#6bf;background-color:rgba(102,187,255,.1)}.markdown .book-hint.warning{border-color:#fd6;background-color:rgba(255,221,102,.1)}.markdown .book-hint.danger{border-color:#f66;background-color:rgba(255,102,102,.1)}

docs/themes/hugo-book/resources/_gen/assets/book.scss_e129fe35b8d0a70789c8a08429469073.json

@@ -0,0 +1 @@
+{"Target":"book.min.309b7ed028807cdb68d8d61e26d609f48369c098dbf5e4d8c0dcf4cdf49feafc.css","MediaType":"text/css","Data":{"Integrity":"sha256-MJt+0CiAfNto2NYeJtYJ9INpwJjb9eTYwNz0zfSf6vw="}}