109 lines
3.2 KiB
JavaScript
109 lines
3.2 KiB
JavaScript
/**
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* External dependencies
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*/
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import { useSelect, useDispatch } from '@wordpress/data';
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import { useState, useEffect } from '@wordpress/element';
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import { CART_STORE_KEY as storeKey } from '@woocommerce/block-data';
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import { usePrevious } from '@woocommerce/base-hooks';
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import { useDebounce } from 'use-debounce';
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import { useCheckoutContext } from '@woocommerce/base-context';
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/**
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* Internal dependencies
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*/
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import { useStoreCart } from './use-store-cart';
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/**
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* @typedef {import('@woocommerce/type-defs/hooks').StoreCartItemQuantity} StoreCartItemQuantity
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* @typedef {import('@woocommerce/type-defs/cart').CartItem} CartItem
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*/
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/**
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* This is a custom hook for loading the Store API /cart/ endpoint and
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* actions for removing or changing item quantity.
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*
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* @see https://github.com/woocommerce/woocommerce-gutenberg-products-block/tree/master/src/RestApi/StoreApi
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*
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* @param {CartItem} cartItem The cartItem to get quantity info from and
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* will have quantity updated on.
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* @return {StoreCartItemQuantity} An object exposing data and actions relating
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* to cart items.
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*/
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export const useStoreCartItemQuantity = ( cartItem ) => {
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const { key: cartItemKey = '', quantity: cartItemQuantity = 1 } = cartItem;
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const { cartErrors } = useStoreCart();
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const { dispatchActions } = useCheckoutContext();
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// Store quantity in hook state. This is used to keep the UI
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// updated while server request is updated.
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const [ quantity, changeQuantity ] = useState( cartItemQuantity );
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const [ debouncedQuantity ] = useDebounce( quantity, 400 );
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const previousDebouncedQuantity = usePrevious( debouncedQuantity );
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const { removeItemFromCart, changeCartItemQuantity } = useDispatch(
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storeKey
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);
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const isPendingQuantity = useSelect(
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( select ) => {
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if ( ! cartItemKey ) {
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return false;
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}
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const store = select( storeKey );
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return store.isItemPendingQuantity( cartItemKey );
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},
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[ cartItemKey ]
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);
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const isPendingDelete = useSelect(
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( select ) => {
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if ( ! cartItemKey ) {
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return false;
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}
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const store = select( storeKey );
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return store.isItemPendingDelete( cartItemKey );
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},
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[ cartItemKey ]
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);
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const removeItem = () => {
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return cartItemKey ? removeItemFromCart( cartItemKey ) : false;
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};
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// Observe debounced quantity value, fire action to update server on change.
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useEffect( () => {
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// Don't run it if quantity didn't change but it was set for the first time.
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if ( cartItemKey && Number.isFinite( previousDebouncedQuantity ) ) {
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changeCartItemQuantity( cartItemKey, debouncedQuantity );
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}
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}, [ debouncedQuantity, cartItemKey ] );
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useEffect( () => {
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if ( isPendingQuantity ) {
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dispatchActions.incrementCalculating();
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} else {
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dispatchActions.decrementCalculating();
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}
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}, [ isPendingQuantity ] );
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useEffect( () => {
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if ( isPendingDelete ) {
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dispatchActions.incrementCalculating();
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} else if ( ! isPendingDelete && cartErrors.length ) {
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dispatchActions.decrementCalculating();
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}
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return () => {
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if ( isPendingDelete ) {
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dispatchActions.decrementCalculating();
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}
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};
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}, [ isPendingDelete ] );
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return {
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isPendingDelete,
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quantity,
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changeQuantity,
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removeItem,
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cartItemQuantityErrors: cartErrors,
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};
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};
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