mediawiki-skins-Vector/resources/skins.vector.search/restSearchClient.js
Michael Große 820c173644 search: Optionally support load-more events
If the wgVectorSearchClient supports it (the default implementation
doesn’t), add a visible-item-limit to the cdx-typeahead-search, and wire
up the resulting load-more event (new in Codex v0.3) to load additional
search results on scroll.

The hard-coded visibleItemLimit (7) is chosen to match the default limit
of the wbsearchentities API, but ultimately arbitrary; we can look into
how to make this number configurable later, if necessary.

This increases the module size enough that we need to bump the bundle
size a bit more.

Bug: T322333
Change-Id: Iadade9cbf48457cfeabc78439624602ec3f98782
Co-Authored-By: Jon Robson <jdlrobson@gmail.com>
Needed-By: I67fac3b209d6a1ab2661e1e1c0681edd8472ac6c
2022-12-06 13:35:22 +01:00

122 lines
3 KiB
JavaScript

/* global RestResult, SearchResult */
/** @module restSearchClient */
const fetchJson = require( './fetch.js' );
const urlGenerator = require( './urlGenerator.js' );
/**
* @typedef {Object} RestResponse
* @property {RestResult[]} pages
*/
/**
* @typedef {Object} SearchResponse
* @property {string} query
* @property {SearchResult[]} results
*/
/**
* Nullish coalescing operator (??) helper
*
* @param {any} a
* @param {any} b
* @return {any}
*/
function nullish( a, b ) {
return ( a !== null && a !== undefined ) ? a : b;
}
/**
* @param {MwMap} config
* @param {string} query
* @param {RestResponse} restResponse
* @param {boolean} showDescription
* @return {SearchResponse}
*/
function adaptApiResponse( config, query, restResponse, showDescription ) {
const urlGeneratorInstance = urlGenerator( config );
return {
query,
results: restResponse.pages.map( ( page, index ) => {
const thumbnail = page.thumbnail;
return {
id: page.id,
value: page.id || -( index + 1 ),
label: page.title,
key: page.key,
title: page.title,
description: showDescription ? page.description : undefined,
url: urlGeneratorInstance.generateUrl( page ),
thumbnail: thumbnail ? {
url: thumbnail.url,
width: nullish( thumbnail.width, undefined ),
height: nullish( thumbnail.height, undefined )
} : undefined
};
} )
};
}
/**
* @typedef {Object} AbortableSearchFetch
* @property {Promise<SearchResponse>} fetch
* @property {Function} abort
*/
/**
* @callback fetchByTitle
* @param {string} query The search term.
* @param {number} [limit] Maximum number of results.
* @param {boolean} [showDescription] Whether descriptions should be added to the results.
* @return {AbortableSearchFetch}
*/
/**
* @callback loadMore
* @param {string} query The search term.
* @param {number} offset The number of search results that were already loaded.
* @param {number} [limit] How many further search results to load (at most).
* @param {boolean} [showDescription] Whether descriptions should be added to the results.
* @return {AbortableSearchFetch}
*/
/**
* @typedef {Object} SearchClient
* @property {fetchByTitle} fetchByTitle
* @property {loadMore} [loadMore]
*/
/**
* @param {MwMap} config
* @return {SearchClient}
*/
function restSearchClient( config ) {
return config.get( 'wgVectorSearchClient', {
/**
* @type {fetchByTitle}
*/
fetchByTitle: ( q, limit = 10, showDescription = true ) => {
const searchApiUrl = config.get( 'wgVectorSearchApiUrl',
config.get( 'wgScriptPath' ) + '/rest.php'
);
const params = { q, limit };
const url = searchApiUrl + '/v1/search/title?' + $.param( params );
const result = fetchJson( url, {
headers: {
accept: 'application/json'
}
} );
const searchResponsePromise = result.fetch
.then( ( /** @type {RestResponse} */ res ) => {
return adaptApiResponse( config, q, res, showDescription );
} );
return {
abort: result.abort,
fetch: searchResponsePromise
};
}
} );
}
module.exports = restSearchClient;