101 lines
3.6 KiB
JavaScript
101 lines
3.6 KiB
JavaScript
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/**
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* External dependencies
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*/
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import { COLLECTIONS_STORE_KEY as storeKey } from '@woocommerce/block-data';
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import { useSelect } from '@wordpress/data';
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import { useRef } from '@wordpress/element';
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import { useShallowEqual, useThrowError } from '@woocommerce/base-hooks';
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/**
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* This is a custom hook that is wired up to the `wc/store/collections` data
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* store. Given a collections option object, this will ensure a component is
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* kept up to date with the collection matching that query in the store state.
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*
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* @throws {Object} Throws an exception object if there was a problem with the
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* API request, to be picked up by BlockErrorBoundry.
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*
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* @param {Object} options An object declaring the various
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* collection arguments.
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* @param {string} options.namespace The namespace for the collection.
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* Example: `'/wc/blocks'`
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* @param {string} options.resourceName The name of the resource for the
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* collection. Example:
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* `'products/attributes'`
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* @param {Array} [options.resourceValues] An array of values (in correct order)
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* that are substituted in the route
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* placeholders for the collection route.
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* Example: `[10, 20]`
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* @param {Object} [options.query] An object of key value pairs for the
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* query to execute on the collection
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* Example:
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* `{ order: 'ASC', order_by: 'price' }`
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* @param {boolean} [options.shouldSelect] If false, the previous results will be
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* returned and internal selects will not
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* fire.
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*
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* @return {Object} This hook will return an object with two properties:
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* - results An array of collection items returned.
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* - isLoading A boolean indicating whether the collection is
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* loading (true) or not.
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*/
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export const useCollection = ( options ) => {
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const {
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namespace,
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resourceName,
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resourceValues = [],
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query = {},
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shouldSelect = true,
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} = options;
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if ( ! namespace || ! resourceName ) {
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throw new Error(
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'The options object must have valid values for the namespace and ' +
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'the resource properties.'
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);
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}
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const currentResults = useRef( { results: [], isLoading: true } );
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// ensure we feed the previous reference if it's equivalent
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const currentQuery = useShallowEqual( query );
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const currentResourceValues = useShallowEqual( resourceValues );
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const throwError = useThrowError();
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const results = useSelect(
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( select ) => {
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if ( ! shouldSelect ) {
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return null;
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}
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const store = select( storeKey );
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const args = [
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namespace,
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resourceName,
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currentQuery,
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currentResourceValues,
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];
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const error = store.getCollectionError( ...args );
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if ( error ) {
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throwError( error );
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}
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return {
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results: store.getCollection( ...args ),
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isLoading: ! store.hasFinishedResolution(
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'getCollection',
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args
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),
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};
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},
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[
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namespace,
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resourceName,
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currentResourceValues,
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currentQuery,
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shouldSelect,
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]
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);
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// if selector was not bailed, then update current results. Otherwise return
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// previous results
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if ( results !== null ) {
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currentResults.current = results;
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}
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return currentResults.current;
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};
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