woocommerce/packages/woocommerce-blocks/assets/js/data/collections/resolvers.js

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2021-12-10 12:03:04 +00:00
/**
* External dependencies
*/
import { select, dispatch } from '@wordpress/data-controls';
import { addQueryArgs } from '@wordpress/url';
/**
* Internal dependencies
*/
import { receiveCollection, receiveCollectionError } from './actions';
import { STORE_KEY as SCHEMA_STORE_KEY } from '../schema/constants';
import { STORE_KEY, DEFAULT_EMPTY_ARRAY } from './constants';
import { apiFetchWithHeaders } from '../shared-controls';
/**
* Check if the store needs invalidating due to a change in last modified headers.
*
* @param {number} timestamp Last update timestamp.
*/
function* invalidateModifiedCollection( timestamp ) {
const lastModified = yield select( STORE_KEY, 'getCollectionLastModified' );
if ( ! lastModified ) {
yield dispatch( STORE_KEY, 'receiveLastModified', timestamp );
} else if ( timestamp > lastModified ) {
yield dispatch( STORE_KEY, 'invalidateResolutionForStore' );
yield dispatch( STORE_KEY, 'receiveLastModified', timestamp );
}
}
/**
* Resolver for retrieving a collection via a api route.
*
* @param {string} namespace
* @param {string} resourceName
* @param {Object} query
* @param {Array} ids
*/
export function* getCollection( namespace, resourceName, query, ids ) {
const route = yield select(
SCHEMA_STORE_KEY,
'getRoute',
namespace,
resourceName,
ids
);
const queryString = addQueryArgs( '', query );
if ( ! route ) {
yield receiveCollection( namespace, resourceName, queryString, ids );
return;
}
try {
const {
response = DEFAULT_EMPTY_ARRAY,
headers,
} = yield apiFetchWithHeaders( { path: route + queryString } );
if ( headers && headers.get && headers.has( 'last-modified' ) ) {
// Do any invalidation before the collection is received to prevent
// this query running again.
yield invalidateModifiedCollection(
parseInt( headers.get( 'last-modified' ), 10 )
);
}
yield receiveCollection( namespace, resourceName, queryString, ids, {
items: response,
headers,
} );
} catch ( error ) {
yield receiveCollectionError(
namespace,
resourceName,
queryString,
ids,
error
);
}
}
/**
* Resolver for retrieving a specific collection header for the given arguments
*
* Note: This triggers the `getCollection` resolver if it hasn't been resolved
* yet.
*
* @param {string} header
* @param {string} namespace
* @param {string} resourceName
* @param {Object} query
* @param {Array} ids
*/
export function* getCollectionHeader(
header,
namespace,
resourceName,
query,
ids
) {
// feed the correct number of args in for the select so we don't resolve
// unnecessarily. Any undefined args will be excluded. This is important
// because resolver resolution is cached by both number and value of args.
const args = [ namespace, resourceName, query, ids ].filter(
( arg ) => typeof arg !== 'undefined'
);
//we call this simply to do any resolution of the collection if necessary.
yield select( STORE_KEY, 'getCollection', ...args );
}