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pageJSONParser = require( '../mobile.startup/page/pageJSONParser' ),
util = require( '../mobile.startup/util' ),
extendSearchParams = require( '../mobile.startup/extendSearchParams' );
/**
* API for interacting with watchlist.
*/
class WatchListGateway {
/**
* @param {mw.Api} api
* @param {string} lastTitle of page listed in Watchlist to be used as a continuation parameter
* @private
*/
constructor( api, lastTitle ) {
this.api = api;
// Try to keep it in sync with SpecialMobileEditWatchlist::LIMIT (php)
this.limit = 50;
if ( lastTitle ) {
this.continueParams = {
continue: 'gwrcontinue||',
gwrcontinue: '0|' + lastTitle.replace( / /g, '_' )
};
this.shouldSkipFirstTitle = true;
} else {
this.continueParams = {
continue: ''
};
this.shouldSkipFirstTitle = false;
}
this.canContinue = true;
}
/**
* Load the list of items on the watchlist
*
* @return {jQuery.Deferred}
*/
loadWatchlist() {
const params = extendSearchParams( 'watchlist', {
prop: [ 'info', 'revisions' ],
rvprop: 'timestamp|user',
generator: 'watchlistraw',
gwrnamespace: '0',
gwrlimit: this.limit
}, this.continueParams );
Iif ( this.canContinue === false ) {
return util.Deferred().resolve( [] );
}
return this.api.get( params ).then( ( data ) => {
if ( data.continue !== undefined ) {
this.continueParams = data.continue;
} else {
this.canContinue = false;
}
return this.parseData( data );
} );
}
/**
* Parse api response data into pagelist item format
*
* @param {Object[]} data
* @return {Page[]}
*/
parseData( data ) {
let pages;
if ( !data.query || !data.query.pages ) {
return [];
}
pages = data.query.pages;
// Sort results alphabetically (the api map doesn't have any order). The
// watchlist is ordered alphabetically right now.
pages.sort( ( p1, p2 ) => p1.title === p2.title ? 0 : ( p1.title < p2.title ? -1 : 1 ) );
// If we requested from the last item of the previous page, we shall
// remove the first result (to avoid it being repeated)
if ( this.shouldSkipFirstTitle ) {
pages = pages.slice( 1 );
this.shouldSkipFirstTitle = false;
}
// Transform the items to a sensible format
return pages.map( pageJSONParser.parse );
}
}
module.exports = WatchListGateway;
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