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import config from '@automattic/calypso-config';
import { createSelector } from '@automattic/state-utils';
import { decodeEntities } from 'calypso/lib/formatting';
import { getDocumentHeadCappedUnreadCount } from 'calypso/state/document-head/selectors/get-document-head-capped-unread-count';
import { getDocumentHeadTitle } from 'calypso/state/document-head/selectors/get-document-head-title';
import getSiteTitle from 'calypso/state/sites/selectors/get-site-title';
import { getSelectedSiteId, isSiteSection } from 'calypso/state/ui/selectors';
import 'calypso/state/document-head/init';
import 'calypso/state/ui/init';
/**
* Returns the formatted document title, based on the currently set title,
* capped unreadCount, and selected site.
* @param {Object} state Global state tree
* @returns {string} Formatted title
*/
export const getDocumentHeadFormattedTitle = createSelector(
( state ) => {
let title = '';
const unreadCount = getDocumentHeadCappedUnreadCount( state );
if ( unreadCount ) {
title += `(${ unreadCount }) `;
}
title += [
getDocumentHeadTitle( state ),
isSiteSection( state ) && getSiteTitle( state, getSelectedSiteId( state ) ),
]
.filter( Boolean )
.join( ' ‹ ' );
if ( title ) {
title = decodeEntities( title ) + ' — ';
}
return title + config( 'site_name' );
},
( state ) => [ state.documentHead, state.ui.section, state.ui.selectedSiteId ]
);
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