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import page from '@automattic/calypso-router';
import debugModule from 'debug';
import { useEffect, useRef } from 'react';
import QuerySiteFeatures from 'calypso/components/data/query-site-features';
import { useSelector } from 'calypso/state';
import getFeaturesBySiteId from 'calypso/state/selectors/get-site-features';
import isRequestingSiteFeatures from 'calypso/state/selectors/is-requesting-site-features';
import { getLandingPath, isSiteEligibleForJetpackCloud } from './selectors';
import type React from 'react';
const debug = debugModule( 'calypso:jetpack-cloud:landing:main' );
/**
* Check whether or not we've asked for and received an API response
* describing the features of the site with the given ID.
* @param siteId The site for which features data should be requested.
* @returns true if a request and response have taken place (success or failure);
* false otherwise.
*/
const useResolvedSiteFeatures = ( siteId: number ) => {
const hasSiteFeatures = useSelector(
( state ) => !! getFeaturesBySiteId( state, siteId )?.active
);
const requestedSiteFeatures = useRef( false );
const isFetchingSiteFeatures = useSelector( ( state ) =>
isRequestingSiteFeatures( state, siteId )
);
useEffect( () => {
if ( isFetchingSiteFeatures ) {
requestedSiteFeatures.current = true;
}
}, [ isFetchingSiteFeatures ] );
// If the site's features array is populated,
// we know a request happened at some point previously and was successful
if ( hasSiteFeatures ) {
return true;
}
// If the site's features array is unpopulated, but we know we sent a request for it,
// something must have failed; but we know an attempt was made and allowed to
// fully resolve.
if ( requestedSiteFeatures.current && ! isFetchingSiteFeatures ) {
debug( 'site features request seems to have failed' );
return true;
}
return false;
};
// This page should only ever load in a context where a site is already selected
const Landing: React.FC< { siteId: number } > = ( { siteId } ) => {
const isEligible = useSelector( ( state ) => isSiteEligibleForJetpackCloud( state, siteId ) );
const resolvedSiteFeatures = useResolvedSiteFeatures( siteId );
const landingPath = useSelector( ( state ) => getLandingPath( state, siteId ) );
useEffect( () => {
// Send sites that aren't Cloud-eligible back to the home page
if ( ! isEligible ) {
debug( 'site not eligible; redirecting to site selection' );
page.redirect( '/landing' );
return;
}
// Before continuing, wait until we've fetched the selected site's features
if ( ! resolvedSiteFeatures ) {
debug( 'site features not yet resolved' );
return;
}
debug( 'site features resolved; redirecting to appropriate landing page', { landingPath } );
// By this point, we can assume that landingPath is defined;
// let's redirect people to the most appropriate page,
// based on the features available to the selected site
page.redirect( landingPath );
}, [ resolvedSiteFeatures, isEligible, landingPath ] );
return <QuerySiteFeatures siteIds={ [ siteId ] } />;
};
export default Landing;
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