/* * This file is part of the MediaWiki extension MultimediaViewer. * * MultimediaViewer is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * MultimediaViewer is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with MultimediaViewer. If not, see . */ const Api = require( './mmv.provider.Api.js' ); const Thumbnail = require( '../model/mmv.model.Thumbnail.js' ); ( function () { /** * Gets thumbnail information. * * See https://www.mediawiki.org/wiki/API:Properties#imageinfo_.2F_ii */ class ThumbnailInfo extends Api { /** * @param {mw.Api} api * @param {Object} [options] * @cfg {number} [maxage] cache expiration time, in seconds * Will be used for both client-side cache (maxage) and reverse proxies (s-maxage) */ constructor( api, options ) { super( api, options ); } /** * Runs an API GET request to get the thumbnail info for the specified size. * The thumbnail always has the same aspect ratio as the full image. * One of width or height can be null; if both are set, the API will return the largest * thumbnail which fits into a width x height bounding box (or the full-sized image - whichever * is smaller). * * @param {mw.Title} file * @param {number} width thumbnail width in pixels * @param {number} height thumbnail height in pixels * @return {jQuery.Promise.} */ get( file, width, height ) { const cacheKey = `${file.getPrefixedDb()}|${width || ''}|${height || ''}`; return this.getCachedPromise( cacheKey, () => { return this.apiGetWithMaxAge( { formatversion: 2, action: 'query', prop: 'imageinfo', titles: file.getPrefixedDb(), iiprop: 'url', iiurlwidth: width, iiurlheight: height } ).then( ( data ) => { return this.getQueryPage( data ); } ).then( ( page ) => { let imageInfo; if ( page.imageinfo && page.imageinfo[ 0 ] ) { imageInfo = page.imageinfo[ 0 ]; if ( imageInfo.thumburl && imageInfo.thumbwidth && imageInfo.thumbheight ) { return $.Deferred().resolve( new Thumbnail( imageInfo.thumburl, imageInfo.thumbwidth, imageInfo.thumbheight ) ); } else { return $.Deferred().reject( 'error in provider, thumb info not found' ); } } else if ( page.missing === true && page.imagerepository === '' ) { return $.Deferred().reject( `file does not exist: ${file.getPrefixedDb()}` ); } else { return $.Deferred().reject( 'unknown error' ); } } ); } ); } } module.exports = ThumbnailInfo; }() );