docusaurus/packages/docusaurus-theme-search-alg.../src/theme/SearchPage/index.tsx
Dylan Tientcheu 9c689880ed
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feat(search): add runtime support for DocSearch v4 (#11327)
Co-authored-by: sebastien <lorber.sebastien@gmail.com>
2025-09-19 14:15:57 +02:00

597 lines
21 KiB
TypeScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/* eslint-disable jsx-a11y/no-autofocus */
import React, {
type ReactNode,
useEffect,
useReducer,
useRef,
useState,
} from 'react';
import clsx from 'clsx';
import algoliaSearchHelper from 'algoliasearch-helper';
import {liteClient} from 'algoliasearch/lite';
import ExecutionEnvironment from '@docusaurus/ExecutionEnvironment';
import Head from '@docusaurus/Head';
import Link from '@docusaurus/Link';
import {useAllDocsData} from '@docusaurus/plugin-content-docs/client';
import {
HtmlClassNameProvider,
PageMetadata,
useEvent,
usePluralForm,
useSearchQueryString,
} from '@docusaurus/theme-common';
import Translate, {translate} from '@docusaurus/Translate';
import useDocusaurusContext from '@docusaurus/useDocusaurusContext';
import {
useAlgoliaThemeConfig,
useSearchResultUrlProcessor,
} from '@docusaurus/theme-search-algolia/client';
import Layout from '@theme/Layout';
import Heading from '@theme/Heading';
import styles from './styles.module.css';
// Very simple pluralization: probably good enough for now
function useDocumentsFoundPlural() {
const {selectMessage} = usePluralForm();
return (count: number) =>
selectMessage(
count,
translate(
{
id: 'theme.SearchPage.documentsFound.plurals',
description:
'Pluralized label for "{count} documents found". Use as much plural forms (separated by "|") as your language support (see https://www.unicode.org/cldr/cldr-aux/charts/34/supplemental/language_plural_rules.html)',
message: 'One document found|{count} documents found',
},
{count},
),
);
}
function useDocsSearchVersionsHelpers() {
const allDocsData = useAllDocsData();
// State of the version select menus / algolia facet filters
// docsPluginId -> versionName map
const [searchVersions, setSearchVersions] = useState<{
[pluginId: string]: string;
}>(() =>
Object.entries(allDocsData).reduce(
(acc, [pluginId, pluginData]) => ({
...acc,
[pluginId]: pluginData.versions[0]!.name,
}),
{},
),
);
// Set the value of a single select menu
const setSearchVersion = (pluginId: string, searchVersion: string) =>
setSearchVersions((s) => ({...s, [pluginId]: searchVersion}));
const versioningEnabled = Object.values(allDocsData).some(
(docsData) => docsData.versions.length > 1,
);
return {
allDocsData,
versioningEnabled,
searchVersions,
setSearchVersion,
};
}
// We want to display one select per versioned docs plugin instance
function SearchVersionSelectList({
docsSearchVersionsHelpers,
}: {
docsSearchVersionsHelpers: ReturnType<typeof useDocsSearchVersionsHelpers>;
}) {
const versionedPluginEntries = Object.entries(
docsSearchVersionsHelpers.allDocsData,
)
// Do not show a version select for unversioned docs plugin instances
.filter(([, docsData]) => docsData.versions.length > 1);
return (
<div
className={clsx(
'col',
'col--3',
'padding-left--none',
styles.searchVersionColumn,
)}>
{versionedPluginEntries.map(([pluginId, docsData]) => {
const labelPrefix =
versionedPluginEntries.length > 1 ? `${pluginId}: ` : '';
return (
<select
key={pluginId}
onChange={(e) =>
docsSearchVersionsHelpers.setSearchVersion(
pluginId,
e.target.value,
)
}
defaultValue={docsSearchVersionsHelpers.searchVersions[pluginId]}
className={styles.searchVersionInput}>
{docsData.versions.map((version, i) => (
<option
key={i}
label={`${labelPrefix}${version.label}`}
value={version.name}
/>
))}
</select>
);
})}
</div>
);
}
function AlgoliaLogo(): ReactNode {
return (
<svg
width="80"
height="24"
aria-label="Algolia"
role="img"
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 2196.2 500"
style={{maxWidth: '150px'}}>
<defs>
{/* eslint-disable-next-line @docusaurus/no-untranslated-text */}
<style>{`.cls-1,.cls-2{fill:#003dff}.cls-2{fill-rule:evenodd}`}</style>
</defs>
<path
className="cls-2"
d="M1070.38,275.3V5.91c0-3.63-3.24-6.39-6.82-5.83l-50.46,7.94c-2.87,.45-4.99,2.93-4.99,5.84l.17,273.22c0,12.92,0,92.7,95.97,95.49,3.33,.1,6.09-2.58,6.09-5.91v-40.78c0-2.96-2.19-5.51-5.12-5.84-34.85-4.01-34.85-47.57-34.85-54.72Z"
/>
<rect
className="cls-1"
x="1845.88"
y="104.73"
width="62.58"
height="277.9"
rx="5.9"
ry="5.9"
/>
<path
className="cls-2"
d="M1851.78,71.38h50.77c3.26,0,5.9-2.64,5.9-5.9V5.9c0-3.62-3.24-6.39-6.82-5.83l-50.77,7.95c-2.87,.45-4.99,2.92-4.99,5.83v51.62c0,3.26,2.64,5.9,5.9,5.9Z"
/>
<path
className="cls-2"
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/>
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className="cls-2"
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/>
<path
className="cls-2"
d="M894.42,104.73h-49.33c-48.36,0-90.91,25.48-115.75,64.1-14.52,22.58-22.99,49.63-22.99,78.73,0,44.89,20.13,84.92,51.59,111.1,2.93,2.6,6.05,4.98,9.31,7.14,12.86,8.49,28.11,13.47,44.52,13.47,1.23,0,2.46-.03,3.68-.09,.36-.02,.71-.05,1.07-.07,.87-.05,1.75-.11,2.62-.2,.34-.03,.68-.08,1.02-.12,.91-.1,1.82-.21,2.73-.34,.21-.03,.42-.07,.63-.1,32.89-5.07,61.56-30.82,70.9-62.81v57.83c0,3.26,2.64,5.9,5.9,5.9h50.42c3.26,0,5.9-2.64,5.9-5.9V110.63c0-3.26-2.64-5.9-5.9-5.9h-56.32Zm0,206.92c-12.2,10.16-27.97,13.98-44.84,15.12-.16,.01-.33,.03-.49,.04-1.12,.07-2.24,.1-3.36,.1-42.24,0-77.12-35.89-77.12-79.37,0-10.25,1.96-20.01,5.42-28.98,11.22-29.12,38.77-49.74,71.06-49.74h49.33v142.83Z"
/>
<path
className="cls-2"
d="M2133.97,104.73h-49.33c-48.36,0-90.91,25.48-115.75,64.1-14.52,22.58-22.99,49.63-22.99,78.73,0,44.89,20.13,84.92,51.59,111.1,2.93,2.6,6.05,4.98,9.31,7.14,12.86,8.49,28.11,13.47,44.52,13.47,1.23,0,2.46-.03,3.68-.09,.36-.02,.71-.05,1.07-.07,.87-.05,1.75-.11,2.62-.2,.34-.03,.68-.08,1.02-.12,.91-.1,1.82-.21,2.73-.34,.21-.03,.42-.07,.63-.1,32.89-5.07,61.56-30.82,70.9-62.81v57.83c0,3.26,2.64,5.9,5.9,5.9h50.42c3.26,0,5.9-2.64,5.9-5.9V110.63c0-3.26-2.64-5.9-5.9-5.9h-56.32Zm0,206.92c-12.2,10.16-27.97,13.98-44.84,15.12-.16,.01-.33,.03-.49,.04-1.12,.07-2.24,.1-3.36,.1-42.24,0-77.12-35.89-77.12-79.37,0-10.25,1.96-20.01,5.42-28.98,11.22-29.12,38.77-49.74,71.06-49.74h49.33v142.83Z"
/>
<path
className="cls-2"
d="M1314.05,104.73h-49.33c-48.36,0-90.91,25.48-115.75,64.1-11.79,18.34-19.6,39.64-22.11,62.59-.58,5.3-.88,10.68-.88,16.14s.31,11.15,.93,16.59c4.28,38.09,23.14,71.61,50.66,94.52,2.93,2.6,6.05,4.98,9.31,7.14,12.86,8.49,28.11,13.47,44.52,13.47h0c17.99,0,34.61-5.93,48.16-15.97,16.29-11.58,28.88-28.54,34.48-47.75v50.26h-.11v11.08c0,21.84-5.71,38.27-17.34,49.36-11.61,11.08-31.04,16.63-58.25,16.63-11.12,0-28.79-.59-46.6-2.41-2.83-.29-5.46,1.5-6.27,4.22l-12.78,43.11c-1.02,3.46,1.27,7.02,4.83,7.53,21.52,3.08,42.52,4.68,54.65,4.68,48.91,0,85.16-10.75,108.89-32.21,21.48-19.41,33.15-48.89,35.2-88.52V110.63c0-3.26-2.64-5.9-5.9-5.9h-56.32Zm0,64.1s.65,139.13,0,143.36c-12.08,9.77-27.11,13.59-43.49,14.7-.16,.01-.33,.03-.49,.04-1.12,.07-2.24,.1-3.36,.1-1.32,0-2.63-.03-3.94-.1-40.41-2.11-74.52-37.26-74.52-79.38,0-10.25,1.96-20.01,5.42-28.98,11.22-29.12,38.77-49.74,71.06-49.74h49.33Z"
/>
<path
className="cls-1"
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/>
</svg>
);
}
type ResultDispatcherState = {
items: {
title: string;
url: string;
summary: string;
breadcrumbs: string[];
}[];
query: string | null;
totalResults: number | null;
totalPages: number | null;
lastPage: number | null;
hasMore: boolean | null;
loading: boolean | null;
};
type ResultDispatcher =
| {type: 'reset'; value?: undefined}
| {type: 'loading'; value?: undefined}
| {type: 'update'; value: ResultDispatcherState}
| {type: 'advance'; value?: undefined};
function getSearchPageTitle(searchQuery: string | undefined): string {
return searchQuery
? translate(
{
id: 'theme.SearchPage.existingResultsTitle',
message: 'Search results for "{query}"',
description: 'The search page title for non-empty query',
},
{
query: searchQuery,
},
)
: translate({
id: 'theme.SearchPage.emptyResultsTitle',
message: 'Search the documentation',
description: 'The search page title for empty query',
});
}
function SearchPageContent(): ReactNode {
const {
i18n: {currentLocale},
} = useDocusaurusContext();
const {
algolia: {appId, apiKey, indexName, contextualSearch},
} = useAlgoliaThemeConfig();
const processSearchResultUrl = useSearchResultUrlProcessor();
const documentsFoundPlural = useDocumentsFoundPlural();
const docsSearchVersionsHelpers = useDocsSearchVersionsHelpers();
const [searchQuery, setSearchQuery] = useSearchQueryString();
const pageTitle = getSearchPageTitle(searchQuery);
const initialSearchResultState: ResultDispatcherState = {
items: [],
query: null,
totalResults: null,
totalPages: null,
lastPage: null,
hasMore: null,
loading: null,
};
const [searchResultState, searchResultStateDispatcher] = useReducer(
(prevState: ResultDispatcherState, data: ResultDispatcher) => {
switch (data.type) {
case 'reset': {
return initialSearchResultState;
}
case 'loading': {
return {...prevState, loading: true};
}
case 'update': {
if (searchQuery !== data.value.query) {
return prevState;
}
return {
...data.value,
items:
data.value.lastPage === 0
? data.value.items
: prevState.items.concat(data.value.items),
};
}
case 'advance': {
const hasMore = prevState.totalPages! > prevState.lastPage! + 1;
return {
...prevState,
lastPage: hasMore ? prevState.lastPage! + 1 : prevState.lastPage,
hasMore,
};
}
default:
return prevState;
}
},
initialSearchResultState,
);
// respect settings from the theme config for facets
const disjunctiveFacets = contextualSearch
? ['language', 'docusaurus_tag']
: [];
const algoliaClient = liteClient(appId, apiKey);
const algoliaHelper = algoliaSearchHelper(algoliaClient, indexName, {
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore: why errors happens after upgrading to TS 5.5 ?
hitsPerPage: 15,
advancedSyntax: true,
disjunctiveFacets,
});
algoliaHelper.on(
'result',
({results: {query, hits, page, nbHits, nbPages}}) => {
if (query === '' || !Array.isArray(hits)) {
searchResultStateDispatcher({type: 'reset'});
return;
}
const sanitizeValue = (value: string) =>
value.replace(
/algolia-docsearch-suggestion--highlight/g,
'search-result-match',
);
const items = hits.map(
({
url,
_highlightResult: {hierarchy},
_snippetResult: snippet = {},
}: {
url: string;
_highlightResult: {hierarchy: {[key: string]: {value: string}}};
_snippetResult: {content?: {value: string}};
}) => {
const titles = Object.keys(hierarchy).map((key) =>
sanitizeValue(hierarchy[key]!.value),
);
return {
title: titles.pop()!,
url: processSearchResultUrl(url),
summary: snippet.content
? `${sanitizeValue(snippet.content.value)}...`
: '',
breadcrumbs: titles,
};
},
);
searchResultStateDispatcher({
type: 'update',
value: {
items,
query,
totalResults: nbHits,
totalPages: nbPages,
lastPage: page,
hasMore: nbPages > page + 1,
loading: false,
},
});
},
);
const [loaderRef, setLoaderRef] = useState<HTMLDivElement | null>(null);
const prevY = useRef(0);
const observer = useRef(
ExecutionEnvironment.canUseIntersectionObserver &&
new IntersectionObserver(
// TODO need to fix this React Compiler lint error
// eslint-disable-next-line react-compiler/react-compiler
(entries) => {
const {
isIntersecting,
boundingClientRect: {y: currentY},
} = entries[0]!;
if (isIntersecting && prevY.current > currentY) {
searchResultStateDispatcher({type: 'advance'});
}
prevY.current = currentY;
},
{threshold: 1},
),
);
const makeSearch = useEvent((page: number = 0) => {
if (contextualSearch) {
algoliaHelper.addDisjunctiveFacetRefinement('docusaurus_tag', 'default');
algoliaHelper.addDisjunctiveFacetRefinement('language', currentLocale);
Object.entries(docsSearchVersionsHelpers.searchVersions).forEach(
([pluginId, searchVersion]) => {
algoliaHelper.addDisjunctiveFacetRefinement(
'docusaurus_tag',
`docs-${pluginId}-${searchVersion}`,
);
},
);
}
algoliaHelper.setQuery(searchQuery).setPage(page).search();
});
useEffect(() => {
if (!loaderRef) {
return undefined;
}
const currentObserver = observer.current;
if (currentObserver) {
currentObserver.observe(loaderRef);
return () => currentObserver.unobserve(loaderRef);
}
return () => true;
}, [loaderRef]);
useEffect(() => {
searchResultStateDispatcher({type: 'reset'});
if (searchQuery) {
searchResultStateDispatcher({type: 'loading'});
setTimeout(() => {
makeSearch();
}, 300);
}
}, [searchQuery, docsSearchVersionsHelpers.searchVersions, makeSearch]);
useEffect(() => {
if (!searchResultState.lastPage || searchResultState.lastPage === 0) {
return;
}
makeSearch(searchResultState.lastPage);
}, [makeSearch, searchResultState.lastPage]);
return (
<Layout>
<PageMetadata title={pageTitle} />
<Head>
{/*
We should not index search pages
See https://github.com/facebook/docusaurus/pull/3233
*/}
<meta property="robots" content="noindex, follow" />
</Head>
<div className="container margin-vert--lg">
<Heading as="h1">{pageTitle}</Heading>
<form className="row" onSubmit={(e) => e.preventDefault()}>
<div
className={clsx('col', styles.searchQueryColumn, {
'col--9': docsSearchVersionsHelpers.versioningEnabled,
'col--12': !docsSearchVersionsHelpers.versioningEnabled,
})}>
<input
type="search"
name="q"
className={styles.searchQueryInput}
placeholder={translate({
id: 'theme.SearchPage.inputPlaceholder',
message: 'Type your search here',
description: 'The placeholder for search page input',
})}
aria-label={translate({
id: 'theme.SearchPage.inputLabel',
message: 'Search',
description: 'The ARIA label for search page input',
})}
onChange={(e) => setSearchQuery(e.target.value)}
value={searchQuery}
autoComplete="off"
autoFocus
/>
</div>
{contextualSearch && docsSearchVersionsHelpers.versioningEnabled && (
<SearchVersionSelectList
docsSearchVersionsHelpers={docsSearchVersionsHelpers}
/>
)}
</form>
<div className="row">
<div className={clsx('col', 'col--8', styles.searchResultsColumn)}>
{!!searchResultState.totalResults &&
documentsFoundPlural(searchResultState.totalResults)}
</div>
<div className={clsx('col', 'col--4', styles.searchLogoColumn)}>
<span>
{translate({
id: 'theme.SearchPage.algoliaLabel',
message: 'Powered by',
description:
'The text explain that the search powered by Algolia',
})}
</span>
<Link
to="https://www.algolia.com/"
aria-label={translate({
id: 'theme.SearchPage.algoliaLabel',
message: 'Powered by Algolia',
description: 'The description label for Algolia mention',
})}>
<AlgoliaLogo />
</Link>
</div>
</div>
{searchResultState.items.length > 0 ? (
<main>
{searchResultState.items.map(
({title, url, summary, breadcrumbs}, i) => (
<article key={i} className={styles.searchResultItem}>
<Heading as="h2" className={styles.searchResultItemHeading}>
<Link to={url} dangerouslySetInnerHTML={{__html: title}} />
</Heading>
{breadcrumbs.length > 0 && (
<nav aria-label="breadcrumbs">
<ul
className={clsx(
'breadcrumbs',
styles.searchResultItemPath,
)}>
{breadcrumbs.map((html, index) => (
<li
key={index}
className="breadcrumbs__item"
// Developer provided the HTML, so assume it's safe.
// eslint-disable-next-line react/no-danger
dangerouslySetInnerHTML={{__html: html}}
/>
))}
</ul>
</nav>
)}
{summary && (
<p
className={styles.searchResultItemSummary}
// Developer provided the HTML, so assume it's safe.
// eslint-disable-next-line react/no-danger
dangerouslySetInnerHTML={{__html: summary}}
/>
)}
</article>
),
)}
</main>
) : (
[
searchQuery && !searchResultState.loading && (
<p key="no-results">
<Translate
id="theme.SearchPage.noResultsText"
description="The paragraph for empty search result">
No results were found
</Translate>
</p>
),
!!searchResultState.loading && (
<div key="spinner" className={styles.loadingSpinner} />
),
]
)}
{searchResultState.hasMore && (
<div className={styles.loader} ref={setLoaderRef}>
<Translate
id="theme.SearchPage.fetchingNewResults"
description="The paragraph for fetching new search results">
Fetching new results...
</Translate>
</div>
)}
</div>
</Layout>
);
}
export default function SearchPage(): ReactNode {
return (
<HtmlClassNameProvider className="search-page-wrapper">
<SearchPageContent />
</HtmlClassNameProvider>
);
}