« MediaWiki:Common.js » : différence entre les versions

/* Tout JavaScript présent ici sera exécuté par tous les utilisateurs à chaque chargement de page. */

/**
 * Keep code in MediaWiki:Common.js to a minimum as it is unconditionally
 * loaded for all users on every wiki page. If possible create a gadget that is
 * enabled by default instead of adding it here (since gadgets are fully
 * optimized ResourceLoader modules with possibility to add dependencies etc.)
 *
 * Since Common.js isn't a gadget, there is no place to declare its
 * dependencies, so we have to lazy load them with mw.loader.using on demand and
 * then execute the rest in the callback. In most cases these dependencies will
 * be loaded (or loading) already and the callback will not be delayed. In case a
 * dependency hasn't arrived yet it'll make sure those are loaded before this.
 */

/* global mw, $ */
/* jshint strict:false, browser:true */

mw.loader.using( [ 'mediawiki.util' ] ).then( function () {

    mw.log.deprecate( window, 'addPortletLink', mw.util.addPortletLink, 'Use mw.util.addPortletLink instead' );

    var extraCSS = mw.util.getParamValue( 'withCSS' ),
        extraJS  = mw.util.getParamValue( 'withJS' );

    if ( extraCSS ) {
        if ( /^MediaWiki:[^&<>=%#]*\.css$/.test( extraCSS ) ) {
            mw.loader.load( '/w/index.php?title=' + encodeURIComponent( extraCSS ) + '&action=raw&ctype=text/css', 'text/css' );
        } else {
            mw.notify( 'Only pages from the MediaWiki namespace are allowed.', { title: 'Invalid withCSS value' } );
        }
    }

    if ( extraJS ) {
        if ( /^MediaWiki:[^&<>=%#]*\.js$/.test( extraJS ) ) {
            mw.loader.load( '/w/index.php?title=' + encodeURIComponent( extraJS ) + '&action=raw&ctype=text/javascript' );
        } else {
            mw.notify( 'Only pages from the MediaWiki namespace are allowed.', { title: 'Invalid withJS value' } );
        }
    }

    /**
     * Collapsible tables
     */
    mw.hook( 'wikipage.content' ).add( function ( $content ) {
        var $tables = $content.find( 'table.collapsible:not(.mw-collapsible)' );
        if ( !$tables.length ) { return; }

        $tables.addClass( 'mw-collapsible' ).each( function () {
            if ( $( this ).hasClass( 'collapsed' ) ) {
                $( this ).addClass( 'mw-collapsed' );
            }
        } );

        mw.loader.using( 'jquery.makeCollapsible' ).then( function () {
            $tables.makeCollapsible();
        } );
    } );

    mw.hook( 'wikipage.collapsibleContent' ).add( function ( $collapsibleContent ) {
        var autoCollapseThreshold = 2,
            hasOuter = $collapsibleContent.parents( '.outercollapse' ).length > 0;

        $collapsibleContent.each( function () {
            var $element = $( this );

            if ( $element.hasClass( 'collapsible' ) ) {
                $element.find( 'tr:first > th:first' ).prepend( $element.find( 'tr:first > * > .mw-collapsible-toggle' ) );
            }

            if ( $collapsibleContent.length >= autoCollapseThreshold && $element.hasClass( 'autocollapse' ) ) {
                $element.data( 'mw-collapsible' ).collapse();
            } else if ( $element.hasClass( 'innercollapse' ) && hasOuter ) {
                $element.data( 'mw-collapsible' ).collapse();
            }

            var $toggle = $element.find( '.mw-collapsible-toggle' );
            if ( $toggle.length && $toggle.parent()[0].style.color ) {
                $toggle.css( 'color', 'inherit' ).find( '.mw-collapsible-text' ).css( 'color', 'inherit' );
            }
        } );
    } );

    /**
     * Force interwiki links to open in a new tab
     */
    mw.hook( 'wikipage.content' ).add( function ( $content ) {
        $content.find( 'a.extiw' ).attr( 'target', '_blank' ).attr( 'rel', 'noopener noreferrer' );
    } );

    /**
     * High-Performance Wikidata SPARQL Table Engine
     */
    var WIKIDATA_PREFIX     = 'http://www.wikidata.org/entity/',
        WIKIDATA_HTTPS      = 'https://www.wikidata.org/entity/',
        COMMONS_MARKER      = 'Special:FilePath/',
        SPARQL_CACHE_TTL    = 2 * 60 * 1000,       // 2 mins: serve cached version without network request
        SPARQL_STALE_TTL    = 6 * 60 * 60 * 1000,  // 6 hours: serve stale instantly, revalidate in background
        SPARQL_TIMEOUT      = 30000,               // 30s timeout
        SPARQL_MAX_PARALLEL = 2,                   // Concurrency limit
        SPARQL_RETRY_MAX    = 2,
        SPARQL_RETRY_BASE   = 1000;

    function escapeHtml( text ) {
        return String( text )
            .replace( /&/g, '&amp;' )
            .replace( /</g, '&lt;' )
            .replace( />/g, '&gt;' )
            .replace( /"/g, '&quot;' )
            .replace( /'/g, '&#39;' );
    }

    function hashKey( str ) {
        var h = 0x811c9dc5;
        for ( var i = 0; i < str.length; i++ ) {
            h ^= str.charCodeAt( i );
            h = ( h * 0x01000193 ) >>> 0;
        }
        return h.toString( 36 );
    }

    var memoryCache = {};

    function detectStore() {
        var stores = [ 'localStorage', 'sessionStorage' ];
        for ( var i = 0; i < stores.length; i++ ) {
            try {
                var s = window[ stores[i] ];
                s.setItem( '__wdsparql_test__', '1' );
                s.removeItem( '__wdsparql_test__' );
                return s;
            } catch ( e ) { /* try next */ }
        }
        return null;
    }

    var store = detectStore();

    function getCachedRecord( sparql ) {
        var key = 'wdsparql:' + hashKey( sparql );
        if ( store ) {
            try {
                var raw = store.getItem( key );
                if ( raw ) { return JSON.parse( raw ); }
            } catch ( e ) {}
        }
        return memoryCache[ key ] || null;
    }

    function setCachedRecord( sparql, data ) {
        var key = 'wdsparql:' + hashKey( sparql ),
            entry = { ts: Date.now(), data: data };

        memoryCache[ key ] = entry;

        if ( store ) {
            try {
                store.setItem( key, JSON.stringify( entry ) );
            } catch ( e ) {
                try {
                    // Prune old keys on storage quota hit
                    for ( var i = store.length - 1; i >= 0; i-- ) {
                        var k = store.key( i );
                        if ( k && k.indexOf( 'wdsparql:' ) === 0 ) { store.removeItem( k ); }
                    }
                    store.setItem( key, JSON.stringify( entry ) );
                } catch ( e2 ) {}
            }
        }
    }

    // --- Concurrent Request Queue
    var inFlight = {}, queue = [], active = 0;

    function pump() {
        while ( active < SPARQL_MAX_PARALLEL && queue.length ) {
            var job = queue.shift();
            active++;
            runNetworkQuery( job.sparql ).then(
                function ( data ) { active--; pump(); job.resolve( data ); },
                function ( err )  { active--; pump(); job.reject( err ); }
            );
        }
    }

    function enqueue( sparql ) {
        var key = hashKey( sparql );
        if ( inFlight[ key ] ) { return inFlight[ key ]; }

        var p = new Promise( function ( resolve, reject ) {
            queue.push( { sparql: sparql, resolve: resolve, reject: reject } );
        } );

        var cleaned = p.then(
            function ( result ) { delete inFlight[ key ]; return result; },
            function ( err )    { delete inFlight[ key ]; throw err; }
        );

        inFlight[ key ] = cleaned;
        pump();
        return cleaned;
    }

    function runNetworkQuery( sparql, attempt ) {
        attempt = attempt || 0;
        var controller = ( typeof AbortController !== 'undefined' ) ? new AbortController() : null,
            timer = controller ? setTimeout( function () { controller.abort(); }, SPARQL_TIMEOUT ) : null,
            fetchUrl = 'https://query.wikidata.org/sparql?format=json&query=' + encodeURIComponent( sparql );

        return fetch( fetchUrl, {
            headers: { Accept: 'application/sparql-results+json' },
            signal: controller ? controller.signal : undefined
        } )
            .then( function ( r ) {
                if ( timer ) { clearTimeout( timer ); }

                if ( ( r.status === 429 || r.status === 503 ) && attempt < SPARQL_RETRY_MAX ) {
                    var wait = SPARQL_RETRY_BASE * Math.pow( 2, attempt ),
                        retryAfter = r.headers.get( 'Retry-After' );
                    if ( retryAfter && !isNaN( +retryAfter ) ) { wait = ( +retryAfter ) * 1000; }
                    return new Promise( function ( resolve ) { setTimeout( resolve, wait ); } )
                        .then( function () { return runNetworkQuery( sparql, attempt + 1 ); } );
                }

                if ( !r.ok ) { throw new Error( 'HTTP ' + r.status ); }
                return r.json();
            } )
            .then( function ( data ) {
                setCachedRecord( sparql, data );
                return data;
            } );
    }

    // Direct upload.wikimedia.org thumbnail construction bypassing Special:FilePath redirects
    function commonsThumbUrl( value, width ) {
    var idx = value.indexOf( COMMONS_MARKER );
    if ( idx === -1 ) return value;

    var rawFilename = value.substring( idx + COMMONS_MARKER.length );
    return 'https://commons.wikimedia.org/wiki/Special:Redirect/file/' + rawFilename + '?width=' + width;
	}

    function renderTable( data, title ) {
        var vars = data.head.vars,
            rows = data.results.bindings,
            vLen = vars.length,
            html = [];

        if ( title ) {
            html.push( '<h3>', escapeHtml( title ), '</h3>' );
        }

        html.push( '<table class="wikitable sortable"><thead><tr>' );
        for ( var i = 0; i < vLen; i++ ) {
            html.push( '<th>', escapeHtml( vars[i].replace( /_/g, ' ' ) ), '</th>' );
        }
        html.push( '</tr></thead><tbody>' );

        for ( var r = 0, rLen = rows.length; r < rLen; r++ ) {
            var row = rows[r];
            html.push( '<tr>' );
            for ( var c = 0; c < vLen; c++ ) {
                var v = vars[c],
                    val = row[v] ? row[v].value : '';

                if ( val.indexOf( COMMONS_MARKER ) !== -1 ) {
                    var thumb = commonsThumbUrl( val, 100 );
                    html.push(
                        '<td><img src="', escapeHtml( thumb ), '" style="max-height:80px;" alt="" loading="lazy" ',
                        'onerror="this.onerror=null;this.replaceWith(document.createTextNode(\'—\'));" /></td>'
                    );
                } else if ( val.indexOf( WIKIDATA_PREFIX ) === 0 || val.indexOf( WIKIDATA_HTTPS ) === 0 ) {
                    var qid = val.substring( val.lastIndexOf( '/' ) + 1 );
                    html.push( '<td><a href="https://www.wikidata.org/wiki/', qid, '" target="_blank" rel="noopener">', qid, '</a></td>' );
                } else {
                    html.push( '<td>', escapeHtml( val ), '</td>' );
                }
            }
            html.push( '</tr>' );
        }

        html.push( '</tbody></table>' );
        return html.join( '' );
    }

    function processTableElement( el ) {
        var sparql = el.getAttribute( 'data-sparql' ),
            title  = el.getAttribute( 'data-title' );

        if ( !sparql ) { return Promise.resolve( null ); }

        var record = getCachedRecord( sparql ),
            now = Date.now(),
            hasFreshCache = record && ( now - record.ts <= SPARQL_CACHE_TTL ),
            hasStaleCache = record && ( now - record.ts <= SPARQL_STALE_TTL );

        // Scenario 1: Fresh cache available -> Render instantly with zero network requests
        if ( hasFreshCache ) {
            el.innerHTML = renderTable( record.data, title );
            return Promise.resolve( el );
        }

        // Scenario 2: Stale cache available -> Render instantly, update in background (SWR)
        if ( hasStaleCache ) {
            el.innerHTML = renderTable( record.data, title );
            enqueue( sparql ).then( function ( freshData ) {
                // Silently update DOM if data has changed
                if ( JSON.stringify( freshData ) !== JSON.stringify( record.data ) ) {
                    el.innerHTML = renderTable( freshData, title );
                    mw.hook( 'wikipage.content' ).fire( $( el ) );
                }
            } ).catch( function () { /* Keep stale data on error */ } );
            return Promise.resolve( el );
        }

        // Scenario 3: No cache -> Show loading state and fetch
        el.textContent = '⏳ Loading…';
        return enqueue( sparql )
            .then( function ( data ) {
                el.innerHTML = renderTable( data, title );
                return el;
            } )
            .catch( function ( err ) {
                el.textContent = ( err && err.name === 'AbortError' )
                    ? '⚠️ Timed out loading data.'
                    : '⚠️ Failed to load (Wikidata may be busy).';
            } );
    }

    mw.hook( 'wikipage.content' ).add( function ( $content ) {
        var contextNode = ( $content && $content[0] ) ? $content[0] : document,
            tables = contextNode.querySelectorAll( '.wikidata-sparql-table:not([data-loaded])' );

        if ( !tables.length ) { return; }

        var tablesToProcess = [];

        // Lazy-loading with IntersectionObserver (only load tables when near viewport)
        if ( 'IntersectionObserver' in window ) {
            var observer = new IntersectionObserver( function ( entries, obs ) {
                entries.forEach( function ( entry ) {
                    if ( entry.isIntersecting ) {
                        var el = entry.target;
                        obs.unobserve( el );
                        if ( !el.getAttribute( 'data-loaded' ) ) {
                            el.setAttribute( 'data-loaded', '1' );
                            processTableElement( el ).then( function ( renderedEl ) {
                                if ( renderedEl ) { mw.hook( 'wikipage.content' ).fire( $( renderedEl ) ); }
                            } );
                        }
                    }
                } );
            }, { rootMargin: '300px 0px' } );

            tables.forEach( function ( el ) { observer.observe( el ); } );
        } else {
            // Fallback for older browsers
            var renderPromises = Array.prototype.map.call( tables, function ( el ) {
                el.setAttribute( 'data-loaded', '1' );
                return processTableElement( el );
            } );

            Promise.all( renderPromises ).then( function ( renderedElements ) {
                var validElements = renderedElements.filter( Boolean );
                if ( validElements.length ) {
                    mw.hook( 'wikipage.content' ).fire( $( validElements ) );
                }
            } );
        }
    } );
} );

/* DO NOT ADD CODE BELOW THIS LINE */