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import { EngagementStatsDataPoint, fetchSiteEngagementStats } from '../../data/site-stats';
export const siteEngagementStatsQuery = ( siteId: number ) => ( {
queryKey: [ 'site', siteId, 'engagement-stats' ],
queryFn: () => fetchSiteEngagementStats( siteId ),
select: ( { data: stats }: { data: Array< [ string, number, number, number, number ] > } ) => {
// We need to normalize the returned data. We ask for 14 days of data (quantity:14)
// and we get a response with an array of data like: `[ '2025-04-13', 1, 3, 0, 0 ]`.
// Each number in the response is referring to the order of the field provided in `stat_fields`.
// The returned array is sorted with ascending date order, so we need to use the last 7 entries
// for our current data and the first 7 entries for the previous data.
// Noting that we can't use `unit:'week'` because the API has a specific behavior for start/end of weeks.
const calculateStats = ( data: Array< [ string, number, number, number, number ] > ) =>
data.reduce(
( accumulator: EngagementStatsDataPoint, [ , visitors, views, likes, comments ] ) => {
accumulator.visitors += Number( visitors );
accumulator.views += Number( views );
accumulator.likes += Number( likes );
accumulator.comments += Number( comments );
return accumulator;
},
{ visitors: 0, views: 0, likes: 0, comments: 0 }
);
const dataLength = stats.length;
const currentData = calculateStats( stats.slice( Math.max( 0, dataLength - 7 ) ) );
const previousData = calculateStats( stats.slice( 0, Math.max( 0, dataLength - 7 ) ) );
return { previousData, currentData };
},
} );
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