From 8af973175c340678aa001f5e88ea93e0b836f7ed Mon Sep 17 00:00:00 2001
From: Sayak Mukhopadhyay <mukhopadhyaysayak@gmail.com>
Date: Wed, 12 Feb 2025 13:15:51 +0530
Subject: [PATCH] feat: rework the scripts to make it closer to docsy

feat: implement custom partial in search--input.html

chore: add some comments on how things can be refactored later

feat: bring the search.html closer to docsy by only including the search-input partial and using the other things from baseof.html

fix: first line comments need to be in the {{/* */}} block, see https://github.com/gohugoio/hugo/issues/7243

Apply suggestions from code review

fix: apply review suggestions

fix: search bar should be removed in page find results and should be present in the sidebar

Co-authored-by: Tim Bannister <tim@scalefactory.com>
---
 assets/js/custom-search.js                | 139 ++++++++++++++++++++++
 assets/js/search.js                       |  45 -------
 hugo.toml                                 |   2 +-
 layouts/_default/search.html              |  96 +++++++--------
 layouts/partials/scripts.html             |   3 +
 layouts/partials/search-input-custom.html |  20 ++++
 layouts/partials/search-input.html        |  74 ++++++------
 static/js/search.js                       | 108 -----------------
 8 files changed, 241 insertions(+), 246 deletions(-)
 create mode 100644 assets/js/custom-search.js
 delete mode 100644 assets/js/search.js
 create mode 100644 layouts/partials/search-input-custom.html
 delete mode 100644 static/js/search.js

diff --git a/assets/js/custom-search.js b/assets/js/custom-search.js
new file mode 100644
index 0000000000..6debd96850
--- /dev/null
+++ b/assets/js/custom-search.js
@@ -0,0 +1,139 @@
+document.querySelector('html').classList.add('search');
+
+document.addEventListener('DOMContentLoaded', function() {
+  let searchTerm = new URLSearchParams(window.location.search).get('q');
+  let fetchingElem = document.getElementById('bing-results-container');
+
+  if (!searchTerm) {
+    if (fetchingElem) fetchingElem.style.display = 'none';
+  }
+});
+
+window.renderGoogleSearchResults = () => {
+  const cx = '013288817511911618469:elfqqbqldzg';
+  const gcse = document.createElement('script');
+  gcse.type = 'text/javascript';
+  gcse.async = true;
+  gcse.src = (document.location.protocol === 'https:' ? 'https:' : 'http:') + '//cse.google.com/cse.js?cx=' + cx;
+  const s = document.getElementsByTagName('script')[0];
+  s.parentNode.insertBefore(gcse, s);
+}
+
+window.renderPageFindSearchResults = () => {
+  let urlParams = new URLSearchParams(window.location.search);
+  let searchTerm = urlParams.get("q") || "";
+  let sidebarSearch = document.querySelector('#search-results-search');
+  if (sidebarSearch) {
+    sidebarSearch.remove();
+  }
+  document.getElementById('search').style.display = 'block';
+  let pagefind = new PagefindUI({ element: "#search", showImages: false });
+  if (searchTerm) {
+    pagefind.triggerSearch(searchTerm);
+  }
+
+  document.querySelector("#search input").addEventListener("input", function() {
+    const inputValue = this.value;
+    const queryStringVar = "q";
+    updateQueryString(queryStringVar, inputValue);
+  });
+}
+
+function updateQueryString(key, value) {
+  const baseUrl = window.location.href.split("?")[0];
+  const queryString = window.location.search.slice(1);
+  const urlParams = new URLSearchParams(queryString);
+
+  if (urlParams.has(key)) {
+    urlParams.set(key, value);
+  } else {
+    urlParams.append(key, value);
+  }
+
+  const newUrl = baseUrl + "?" + urlParams.toString();
+  // Update the browser history (optional)
+  history.replaceState(null, '', newUrl);
+}
+
+// China Verification.
+const path = "path=/;";
+let d = new Date()
+d.setTime(d.getTime() + (7 * 24 * 60 * 60 * 1000))
+let expires = "expires=" + d.toUTCString()
+
+function getCookie(name) {
+  const value = "; " + document.cookie;
+  const parts = value.split("; " + name + "=");
+  if (parts.length === 2) return parts.pop().split(";").shift();
+  else return "";
+}
+
+async function checkBlockedSite(url) {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => {
+    controller.abort();
+  }, 5000); // Timeout set to 5000ms (5 seconds)
+
+  try {
+    const response = await fetch(url, { method: 'HEAD', mode: 'no-cors', signal: controller.signal });
+    // If we reach this point, the site is accessible (since mode: 'no-cors' doesn't allow us to check response.ok)
+    clearTimeout(timeout);
+    return false;
+  } catch (error) {
+    // If an error occurs, it's likely the site is blocked
+    return true;
+  }
+}
+
+async function loadSearch() {
+  if (getCookie("can_google") === "") {
+    const isGoogleBlocked = await checkBlockedSite("https://www.google.com/favicon.ico");
+    if ( isGoogleBlocked ) {
+      // Google is blocked.
+      document.cookie = "can_google=false;" + path + expires
+      window.renderPageFindSearchResults()
+    } else {
+      // Google is not blocked.
+      document.cookie = "can_google=true;" + path + expires
+      window.renderGoogleSearchResults()
+    }
+  } else if (getCookie("can_google") === "false") {
+    window.renderPageFindSearchResults()
+  } else {
+    window.renderGoogleSearchResults()
+  }
+}
+
+(function ($) {
+  "use strict";
+
+  const Search = {
+    init: function () {
+      $(document).ready(function () {
+        // Fill the search input form with the current search keywords
+        const searchKeywords = new URLSearchParams(location.search).get('q');
+        if (searchKeywords !== null && searchKeywords !== '') {
+          const searchInput = document.querySelector('.td-search-input');
+          searchInput.focus();
+          searchInput.value = searchKeywords;
+        }
+
+        // Set a keydown event
+        $(document).on("keypress", ".td-search-input", function (e) {
+          if (e.keyCode !== 13) {
+            return;
+          }
+
+          const query = $(this).val();
+          document.location = $(this).data('search-page') + "?q=" + query;
+
+          return false;
+        });
+      });
+    },
+  };
+
+  Search.init();
+})(jQuery);
+
+window.onload = loadSearch;
diff --git a/assets/js/search.js b/assets/js/search.js
deleted file mode 100644
index d786cef0f0..0000000000
--- a/assets/js/search.js
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
-Copyright 2018 Google LLC
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-    https://www.apache.org/licenses/LICENSE-2.0
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-(function ($) {
-  "use strict";
-
-  var Search = {
-    init: function () {
-      $(document).ready(function () {
-        // Fill the search input form with the current search keywords
-        const searchKeywords = new URLSearchParams(location.search).get('q');
-        if (searchKeywords !== null && searchKeywords !== '') {
-          const searchInput = document.querySelector('.td-search-input');
-          searchInput.focus();
-          searchInput.value = searchKeywords;
-        }
-
-        // Set a keydown event
-        $(document).on("keypress", ".td-search-input", function (e) {
-          if (e.keyCode !== 13) {
-            return;
-          }
-
-          var query = $(this).val();
-          var searchPage = $(this).data('search-page') + "?q=" + query;
-          document.location = searchPage;
-
-          return false;
-        });
-      });
-    },
-  };
-
-  Search.init();
-})(jQuery);
diff --git a/hugo.toml b/hugo.toml
index fdf901fc97..606581d93c 100644
--- a/hugo.toml
+++ b/hugo.toml
@@ -151,7 +151,7 @@ githubWebsiteRaw = "raw.githubusercontent.com/kubernetes/website"
 github_repo = "https://github.com/kubernetes/website"
 
 # Searching
-k8s_search = true
+customSearch = true
 
 # The following search parameters are specific to Docsy's implementation. Kubernetes implementes its own search-related partials and scripts.
 
diff --git a/layouts/_default/search.html b/layouts/_default/search.html
index b84fd73666..0a68d142f6 100644
--- a/layouts/_default/search.html
+++ b/layouts/_default/search.html
@@ -1,54 +1,42 @@
-<!doctype html>
-<html lang="{{ .Site.Language.Lang }}" class="{{.Params.class}} no-js">
-  <head>
-    {{ partial "head.html" . }}
-  </head>
-  <body class="td-search {{- if ne (lower .Params.cid) "" -}}{{- printf " cid-%s" (lower .Params.cid) -}}{{- end -}}">
-    <header>
-      {{ partial "navbar.html" . }}
-      {{ block "announcement" . }}
-        {{ partial "announcement.html" . }}
-      {{ end }}
-      {{ block "hero" . }}
-        <section class="header-hero filler">
-        </section>
-         {{ block "hero-more" . }}{{ end }}
-      {{ end }}
-    </header>
-    <div class="td-outer">
-      <main role="main" class="td-main">
-        <section class="row td-search-result">
-          <div class="col-12 col-md-4 offset-md-2">
-            <form class="td-sidebar__search d-flex align-items-center">
-              {{ partial "search-input.html" . }}
-            </form>
-          </div>
-          <div class="col-12 col-md-8 offset-md-2">
-          {{ if .Site.Params.gcs_engine_id }}
-          <script>
-            (function() {
-            var cx = '{{ . }}';
-            var gcse = document.createElement('script');
-            gcse.type = 'text/javascript';
-            gcse.async = true;
-            gcse.src = 'https://cse.google.com/cse.js?cx=' + cx;
-            var s = document.getElementsByTagName('script')[0];
-            s.parentNode.insertBefore(gcse, s);
-            })();
-          </script>
-          <gcse:searchresults-only></gcse:searchresults-only>
-          {{ else if .Site.Params.k8s_search }}
-          <script src="{{ "js/search.js" | relURL }}"></script>
-          <script src="/pagefind/pagefind-ui.js"></script>
-          <gcse:searchresults-only linktarget="_parent">
-            <div id="search" style="display:none"></div>
-          </gcse:searchresults-only>
-          {{ end }}
-          </div>
-        </section>
-      </main>
-    </div>
-    {{ partial "footer.html" . }}
-    {{ partialCached "scripts.html" . }}
-  </body>
-</html>
+{{/*
+Copied from Docsy with the addition of the search-input and the customSearch block.
+Revisit this if / when either of https://github.com/google/docsy/issues/2194 and https://github.com/google/docsy/pull/1512 are closed
+*/}}
+{{ define "main" }}
+
+{{/*
+Do not use the `search-results-search` id elsewhere as it is used
+delete this element for pagefind/China users
+*/}}
+
+{{/* From shortcodes/site-searchbar.html which is used in the home page */}}
+<div id="search-results-search" class="col-sm-6 col-md-6 col-lg-6 mx-auto py-3">
+  {{partial "search-input" .}}
+</div>
+<section class="row td-search-result">
+  <div class="col-12 col-md-8 offset-md-2">
+    <h2 class="ml-4">{{ .Title }}</h2>
+    {{ with .Site.Params.gcs_engine_id }}
+    <script>
+      (function() {
+        var cx = '{{ . }}';
+        var gcse = document.createElement('script');
+        gcse.type = 'text/javascript';
+        gcse.async = true;
+        gcse.src = 'https://cse.google.com/cse.js?cx=' + cx;
+        var s = document.getElementsByTagName('script')[0];
+        s.parentNode.insertBefore(gcse, s);
+      })();
+    </script>
+    <gcse:searchresults-only></gcse:searchresults-only>
+    {{ end }}
+    {{ if .Site.Params.customSearch }}
+      <script src="/pagefind/pagefind-ui.js"></script>
+      <gcse:searchresults-only linktarget="_parent">
+        <div id="search" style="display:none"></div>
+      </gcse:searchresults-only>
+    {{ end }}
+  </div>
+</section>
+
+{{ end }}
\ No newline at end of file
diff --git a/layouts/partials/scripts.html b/layouts/partials/scripts.html
index e2bb5a90c1..2b9158caab 100644
--- a/layouts/partials/scripts.html
+++ b/layouts/partials/scripts.html
@@ -33,6 +33,9 @@
 {{ $jsSearch := resources.Get "js/search.js" | resources.ExecuteAsTemplate "js/search.js" .Site.Home }}
 {{ if .Site.Params.offlineSearch }}
 {{ $jsSearch = resources.Get "js/offline-search.js" }}
+{{/* Revisit this if / when either of https://github.com/google/docsy/issues/2194 and https://github.com/google/docsy/pull/1512 are closed */}}
+{{ else if .Site.Params.customSearch }}
+{{ $jsSearch = resources.Get "js/custom-search.js" }}
 {{ end }}
 {{ $js := (slice $jsBs $jsBase $jsAnchor $jsSearch) | resources.Concat "js/main.js" -}}
 {{ if hugo.IsProduction -}}
diff --git a/layouts/partials/search-input-custom.html b/layouts/partials/search-input-custom.html
new file mode 100644
index 0000000000..9e4b69204d
--- /dev/null
+++ b/layouts/partials/search-input-custom.html
@@ -0,0 +1,20 @@
+{{/* Revisit this if / when either of https://github.com/google/docsy/issues/2194 and https://github.com/google/docsy/pull/1512 are closed */}}
+{{ $lang := .Site.Language.Lang }}
+{{ $searchFile := printf "content/%s/search.md" $lang }}
+
+<div class="search-bar">
+  <i class="search-icon fa-solid fa-search"></i>
+  <input
+    type="search"
+    name="q"
+    {{ if fileExists $searchFile }}
+    data-search-page="{{ "search/" | relLangURL  }}"
+    {{ else }}
+    data-search-page="{{ "search/" | relURL }}"
+    {{ end }}
+    class="search-input td-search-input"
+    placeholder="{{ T "ui_search_placeholder" }}"
+    aria-label="{{ T "ui_search_placeholder" }}"
+    autocomplete="off"
+  >
+</div>
\ No newline at end of file
diff --git a/layouts/partials/search-input.html b/layouts/partials/search-input.html
index 9c11fff2ce..1c0530a4ea 100644
--- a/layouts/partials/search-input.html
+++ b/layouts/partials/search-input.html
@@ -1,45 +1,43 @@
-{{ if or .Site.Params.gcs_engine_id .Site.Params.algolia_docsearch }}
-<div class="search-bar">
-  <i class="search-icon fa-solid fa-search"></i>
-  <input
-    type="search"
-    class="search-input td-search-input"
-    placeholder="{{ T "ui_search_placeholder" }}"
-    aria-label="{{ T "ui_search_placeholder" }}"
-    autocomplete="off"
-  >
+{{/*
+Copied from Docsy with the addition of the customSearch block.
+This can be deleted once https://github.com/google/docsy/issues/2194 and https://github.com/google/docsy/pull/1512 are closed
+and the site has been updated to incorporate the upstream change.
+*/}}
+{{ if .Site.Params.gcs_engine_id -}}
+<div class="td-search">
+  <div class="td-search__icon"></div>
+  <input type="search" class="td-search__input form-control td-search-input" placeholder="{{ T "ui_search" }}" aria-label="{{ T "ui_search" }}" autocomplete="off">
 </div>
-{{ else if .Site.Params.offlineSearch }}
-<div class="search-bar" id="search-nav-container">
-  <i class="search-icon fa-solid fa-search"></i>
-  <input
-    type="search"
-    class="search-input td-search-input"
-    id="search-input"
-    placeholder="{{ T "ui_search_placeholder" }}"
-    aria-label="{{ T "ui_search_placeholder" }}"
-    autocomplete="off"
-  >
-</div>
-{{ else if .Site.Params.k8s_search }}
+{{ else if .Site.Params.algolia_docsearch -}}
+<div id="docsearch"></div>
+{{ else if .Site.Params.offlineSearch -}}
+{{ $offlineSearchIndex := resources.Get "json/offline-search-index.json" | resources.ExecuteAsTemplate "offline-search-index.json" . -}}
+{{ if hugo.IsProduction -}}
+{{/* Use `md5` as finger print hash function to shorten file name to avoid `file name too long` error. */ -}}
+{{ $offlineSearchIndex = $offlineSearchIndex | fingerprint "md5" -}}
+{{ end -}}
+{{ $offlineSearchLink := $offlineSearchIndex.RelPermalink -}}
 
-{{ $lang := .Site.Language.Lang }}
-{{ $searchFile := printf "content/%s/search.md" $lang }}
-
-<div class="search-bar">
-  <i class="search-icon fa-solid fa-search"></i>
+<div class="td-search td-search--offline">
+  <div class="td-search__icon"></div>
   <input
     type="search"
-    name="q"
-    {{ if fileExists $searchFile }}
-      data-search-page="{{ "search/" | relLangURL  }}"
-    {{ else }}
-      data-search-page="{{ "search/" | relURL }}"
-    {{ end }}
-    class="search-input td-search-input"
-    placeholder="{{ T "ui_search_placeholder" }}"
-    aria-label="{{ T "ui_search_placeholder" }}"
+    class="td-search__input form-control"
+    placeholder="{{ T "ui_search" }}"
+    aria-label="{{ T "ui_search" }}"
     autocomplete="off"
+    {{/*
+      The data attribute name of the json file URL must end with `src` since
+      Hugo's absurlreplacer requires `src`, `href`, `action` or `srcset` suffix for the attribute name.
+      If the absurlreplacer is not applied, the URL will start with `/`.
+      It causes the json file loading error when when relativeURLs is enabled.
+      https://github.com/google/docsy/issues/181
+    */}}
+    data-offline-search-index-json-src="{{ $offlineSearchLink }}"
+    data-offline-search-base-href="/"
+    data-offline-search-max-results="{{ .Site.Params.offlineSearchMaxResults | default 10 }}"
   >
 </div>
-{{ end }}
+{{ else if .Site.Params.customSearch -}}
+  {{ partialCached "search-input-custom" . }}
+{{ end -}}
diff --git a/static/js/search.js b/static/js/search.js
deleted file mode 100644
index e378099173..0000000000
--- a/static/js/search.js
+++ /dev/null
@@ -1,108 +0,0 @@
-    document.querySelector('html').classList.add('search');
-
-    document.addEventListener('DOMContentLoaded', function() {
-      let searchTerm = new URLSearchParams(window.location.search).get('q');
-      let fetchingElem = document.getElementById('bing-results-container');
-
-      if (!searchTerm) {
-        if (fetchingElem) fetchingElem.style.display = 'none';
-      }
-    });
-
-    window.renderGoogleSearchResults = () => {
-        var cx = '013288817511911618469:elfqqbqldzg';
-        var gcse = document.createElement('script');
-        gcse.type = 'text/javascript';
-        gcse.async = true;
-        gcse.src = (document.location.protocol == 'https:' ? 'https:' : 'http:') + '//cse.google.com/cse.js?cx=' + cx;
-        var s = document.getElementsByTagName('script')[0];
-        s.parentNode.insertBefore(gcse, s);
-    }
-
-    window.renderPageFindSearchResults = () => {
-        let urlParams = new URLSearchParams(window.location.search);
-        let searchTerm = urlParams.get("q") || "";
-        let sidebarSearch = document.querySelector('.td-sidebar__search');
-        if (sidebarSearch) {
-            sidebarSearch.remove();
-        }
-        document.getElementById('search').style.display = 'block';
-        pagefind = new PagefindUI({ element: "#search", showImages: false });
-        if (searchTerm) {
-            pagefind.triggerSearch(searchTerm);
-        }
-
-        document.querySelector("#search input").addEventListener("input", function() {
-            var inputValue = this.value;
-            var queryStringVar = "q";
-            updateQueryString(queryStringVar, inputValue);
-        });
-    }
-
-	function updateQueryString(key, value) {
-		var baseUrl = window.location.href.split("?")[0];
-		var queryString = window.location.search.slice(1);
-		var urlParams = new URLSearchParams(queryString);
-
-		if (urlParams.has(key)) {
-			urlParams.set(key, value);
-		} else {
-			urlParams.append(key, value);
-		}
-
-		var newUrl = baseUrl + "?" + urlParams.toString();
-		// Update the browser history (optional)
-        history.replaceState(null, '', newUrl);
-	}
-
-    // China Verification.
-    var path = "path=/;"
-    d = new Date()
-    d.setTime(d.getTime() + (7 * 24 * 60 * 60 * 1000))
-    expires = "expires=" + d.toUTCString()
-
-    function getCookie(name) {
-        var value = "; " + document.cookie;
-        var parts = value.split("; " + name + "=");
-        if (parts.length == 2) return parts.pop().split(";").shift();
-        else return "";
-    }
-
-    async function checkBlockedSite(url) {
-        const controller = new AbortController();
-        const timeout = setTimeout(() => {
-          controller.abort();
-        }, 5000); // Timeout set to 5000ms (5 seconds)
-      
-        try {
-            const response = await fetch(url, { method: 'HEAD', mode: 'no-cors', signal: controller.signal });
-            // If we reach this point, the site is accessible (since mode: 'no-cors' doesn't allow us to check response.ok)
-            clearTimeout(timeout);
-            return false;
-        } catch (error) {
-            // If an error occurs, it's likely the site is blocked
-            return true;
-        }
-    }
-
-    async function loadSearch() {
-        if (getCookie("can_google") === "") {
-            const isGoogleBlocked = await checkBlockedSite("https://www.google.com/favicon.ico");
-            if ( isGoogleBlocked ) {
-                // Google is blocked.
-                document.cookie = "can_google=false;" + path + expires
-                window.renderPageFindSearchResults()
-            } else {
-                // Google is not blocked.
-                document.cookie = "can_google=true;" + path + expires
-                window.renderGoogleSearchResults()
-            }
-        } else if (getCookie("can_google") == "false") {
-            window.renderPageFindSearchResults()
-        } else {
-            window.renderGoogleSearchResults()
-        }
-    }
-
-    window.onload = loadSearch;
-