phantom.clearCookies();
var page = require('webpage').create(),
        system = require('system'),
        gotCookie = false;
page.onResourceReceived = function(response) {
        var headers = response.headers,
                len = headers.length,
                i = 0;
        if ( !gotCookie ) {
                for ( i=0; i< len; i++ ) {
                        if ( headers[i].name == "Set-Cookie" ) {
                                console.log( JSON.stringify({ cookie: headers[i].value} ));
                                gotCookie = true;
                        }
                }
        }
        var data = page.evaluate( function() {
                if ( !window.mediaWiki ) {
                        return false;
                }
                if ( !mediaWiki.centralNotice ) {
                        return false;
                }
                if ( mediaWiki.centralNotice.choiceData && mediaWiki.centralNotice.data ) {
                        return {
                                data: mediaWiki.centralNotice.data,
                                choiceData: mediaWiki.centralNotice.choiceData,
                                choiceVersion: mediaWiki.loader.getVersion('ext.centralNotice.choiceData')
                        };
                } else {
                        return false;
                }
        } );
        if ( data ) {
                console.log( JSON.stringify( data ));
                phantom.exit();
        }
};
var lang = 'en';
if (system.args.length > 1) {
        lang = system.args[1];
}
page.open('https://' + lang + '.wikipedia.org/wiki/Special:Random');