Revert "Remove unused Add to Cart product element (#11948)"

assets/js/atomic/blocks/component-init.js

@@ -116,3 +116,12 @@ registerBlockComponent( {
 		)
 	),
 } );
+
+registerBlockComponent( {
+	blockName: 'woocommerce/product-add-to-cart',
+	component: lazy( () =>
+		import(
+			/* webpackChunkName: "product-add-to-cart" */ './product-elements/add-to-cart/frontend'
+		)
+	),
+} );

assets/js/atomic/blocks/index.js

@@ -13,6 +13,7 @@ import './product-elements/summary';
 import './product-elements/sale-badge';
 import './product-elements/sku';
 import './product-elements/stock-indicator';
+import './product-elements/add-to-cart';
 import './product-elements/add-to-cart-form';
 import './product-elements/product-image-gallery';
 import './product-elements/product-details';

assets/js/atomic/blocks/product-elements/add-to-cart/attributes.ts

@@ -0,0 +1,12 @@
+export const blockAttributes = {
+	showFormElements: {
+		type: 'boolean',
+		default: false,
+	},
+	productId: {
+		type: 'number',
+		default: 0,
+	},
+};
+
+export default blockAttributes;

assets/js/atomic/blocks/product-elements/add-to-cart/block.tsx

@@ -0,0 +1,87 @@
+/**
+ * External dependencies
+ */
+import classnames from 'classnames';
+import {
+	AddToCartFormContextProvider,
+	useAddToCartFormContext,
+} from '@woocommerce/base-context';
+import { useProductDataContext } from '@woocommerce/shared-context';
+import { isEmpty } from '@woocommerce/types';
+import { withProductDataContext } from '@woocommerce/shared-hocs';
+
+/**
+ * Internal dependencies
+ */
+import './style.scss';
+import { AddToCartButton } from './shared';
+import {
+	SimpleProductForm,
+	VariableProductForm,
+	ExternalProductForm,
+	GroupedProductForm,
+} from './product-types';
+
+interface Props {
+	/**
+	 * CSS Class name for the component.
+	 */
+	className?: string;
+	/**
+	 * Whether or not to show form elements.
+	 */
+	showFormElements?: boolean;
+}
+
+/**
+ * Renders the add to cart form using useAddToCartFormContext.
+ */
+const AddToCartForm = () => {
+	const { showFormElements, productType } = useAddToCartFormContext();
+
+	if ( showFormElements ) {
+		if ( productType === 'variable' ) {
+			return <VariableProductForm />;
+		}
+		if ( productType === 'grouped' ) {
+			return <GroupedProductForm />;
+		}
+		if ( productType === 'external' ) {
+			return <ExternalProductForm />;
+		}
+		if ( productType === 'simple' || productType === 'variation' ) {
+			return <SimpleProductForm />;
+		}
+		return null;
+	}
+
+	return <AddToCartButton />;
+};
+
+/**
+ * Product Add to Form Block Component.
+ */
+const Block = ( { className, showFormElements }: Props ) => {
+	const { product } = useProductDataContext();
+	const componentClass = classnames(
+		className,
+		'wc-block-components-product-add-to-cart',
+		{
+			'wc-block-components-product-add-to-cart--placeholder':
+				isEmpty( product ),
+		}
+	);
+
+	return (
+		<AddToCartFormContextProvider
+			product={ product }
+			showFormElements={ showFormElements }
+		>
+			<div className={ componentClass }>
+				<AddToCartForm />
+			</div>
+		</AddToCartFormContextProvider>
+	);
+};
+
+export default withProductDataContext( Block );

assets/js/atomic/blocks/product-elements/add-to-cart/constants.tsx

@@ -0,0 +1,15 @@
+/**
+ * External dependencies
+ */
+import { __ } from '@wordpress/i18n';
+import { cart } from '@woocommerce/icons';
+import { Icon } from '@wordpress/icons';
+
+export const BLOCK_TITLE = __( 'Add to Cart', 'woo-gutenberg-products-block' );
+export const BLOCK_ICON = (
+	<Icon icon={ cart } className="wc-block-editor-components-block-icon" />
+);
+export const BLOCK_DESCRIPTION = __(
+	'Displays an add to cart button. Optionally displays other add to cart form elements.',
+	'woo-gutenberg-products-block'
+);

assets/js/atomic/blocks/product-elements/add-to-cart/edit.tsx

@@ -0,0 +1,94 @@
+/**
+ * External dependencies
+ */
+import { __ } from '@wordpress/i18n';
+import EditProductLink from '@woocommerce/editor-components/edit-product-link';
+import { useProductDataContext } from '@woocommerce/shared-context';
+import classnames from 'classnames';
+import {
+	Disabled,
+	PanelBody,
+	ToggleControl,
+	Notice,
+} from '@wordpress/components';
+import { InspectorControls } from '@wordpress/block-editor';
+import { productSupportsAddToCartForm } from '@woocommerce/base-utils';
+
+/**
+ * Internal dependencies
+ */
+import './style.scss';
+import Block from './block';
+import withProductSelector from '../shared/with-product-selector';
+import { BLOCK_TITLE, BLOCK_ICON } from './constants';
+
+interface EditProps {
+	attributes: {
+		className: string;
+		showFormElements: boolean;
+	};
+	setAttributes: ( attributes: { showFormElements: boolean } ) => void;
+}
+
+const Edit = ( { attributes, setAttributes }: EditProps ) => {
+	const { product } = useProductDataContext();
+	const { className, showFormElements } = attributes;
+
+	return (
+		<div
+			className={ classnames(
+				className,
+				'wc-block-components-product-add-to-cart'
+			) }
+		>
+			<EditProductLink productId={ product.id } />
+			<InspectorControls>
+				<PanelBody
+					title={ __( 'Layout', 'woo-gutenberg-products-block' ) }
+				>
+					{ productSupportsAddToCartForm( product ) ? (
+						<ToggleControl
+							label={ __(
+								'Display form elements',
+								'woo-gutenberg-products-block'
+							) }
+							help={ __(
+								'Depending on product type, allow customers to select a quantity, variations etc.',
+								'woo-gutenberg-products-block'
+							) }
+							checked={ showFormElements }
+							onChange={ () =>
+								setAttributes( {
+									showFormElements: ! showFormElements,
+								} )
+							}
+						/>
+					) : (
+						<Notice
+							className="wc-block-components-product-add-to-cart-notice"
+							isDismissible={ false }
+							status="info"
+						>
+							{ __(
+								'This product does not support the block based add to cart form. A link to the product page will be shown instead.',
+								'woo-gutenberg-products-block'
+							) }
+						</Notice>
+					) }
+				</PanelBody>
+			</InspectorControls>
+			<Disabled>
+				<Block { ...attributes } />
+			</Disabled>
+		</div>
+	);
+};
+
+export default withProductSelector( {
+	icon: BLOCK_ICON,
+	label: BLOCK_TITLE,
+	description: __(
+		'Choose a product to display its add to cart form.',
+		'woo-gutenberg-products-block'
+	),
+} )( Edit );

assets/js/atomic/blocks/product-elements/add-to-cart/frontend.ts

@@ -0,0 +1,12 @@
+/**
+ * External dependencies
+ */
+import { withFilteredAttributes } from '@woocommerce/shared-hocs';
+
+/**
+ * Internal dependencies
+ */
+import Block from './block';
+import attributes from './attributes';
+
+export default withFilteredAttributes( attributes )( Block );

assets/js/atomic/blocks/product-elements/add-to-cart/index.ts

@@ -0,0 +1,29 @@
+/**
+ * External dependencies
+ */
+import { registerExperimentalBlockType } from '@woocommerce/block-settings';
+
+/**
+ * Internal dependencies
+ */
+import sharedConfig from '../shared/config';
+import edit from './edit';
+import attributes from './attributes';
+import {
+	BLOCK_TITLE as title,
+	BLOCK_ICON as icon,
+	BLOCK_DESCRIPTION as description,
+} from './constants';
+
+const blockConfig = {
+	title,
+	description,
+	icon: { src: icon },
+	edit,
+	attributes,
+};
+
+registerExperimentalBlockType( 'woocommerce/product-add-to-cart', {
+	...sharedConfig,
+	...blockConfig,
+} );

assets/js/atomic/blocks/product-elements/add-to-cart/product-types/external.tsx

@@ -0,0 +1,13 @@
+/**
+ * Internal dependencies
+ */
+import AddToCartButton from '../shared/add-to-cart-button';
+
+/**
+ * External Product Add To Cart Form
+ */
+const External = () => {
+	return <AddToCartButton />;
+};
+
+export default External;

assets/js/atomic/blocks/product-elements/add-to-cart/product-types/grouped.tsx

@@ -0,0 +1,8 @@
+/**
+ * Grouped Product Add To Cart Form
+ */
+const Grouped = () => (
+	<p>This is a placeholder for the grouped products form element.</p>
+);
+
+export default Grouped;

assets/js/atomic/blocks/product-elements/add-to-cart/product-types/index.ts

@@ -0,0 +1,4 @@
+export { default as SimpleProductForm } from './simple';
+export { default as VariableProductForm } from './variable/index';
+export { default as ExternalProductForm } from './external';
+export { default as GroupedProductForm } from './grouped';

assets/js/atomic/blocks/product-elements/add-to-cart/product-types/simple.tsx

@@ -0,0 +1,57 @@
+/**
+ * External dependencies
+ */
+import { __ } from '@wordpress/i18n';
+import { useAddToCartFormContext } from '@woocommerce/base-context';
+
+/**
+ * Internal dependencies
+ */
+import { AddToCartButton, QuantityInput, ProductUnavailable } from '../shared';
+
+/**
+ * Simple Product Add To Cart Form
+ */
+const Simple = () => {
+	// @todo Add types for `useAddToCartFormContext`
+	const {
+		product,
+		quantity,
+		minQuantity,
+		maxQuantity,
+		multipleOf,
+		dispatchActions,
+		isDisabled,
+	} = useAddToCartFormContext();
+
+	if ( product.id && ! product.is_purchasable ) {
+		return <ProductUnavailable />;
+	}
+
+	if ( product.id && ! product.is_in_stock ) {
+		return (
+			<ProductUnavailable
+				reason={ __(
+					'This product is currently out of stock and cannot be purchased.',
+					'woo-gutenberg-products-block'
+				) }
+			/>
+		);
+	}
+
+	return (
+		<>
+			<QuantityInput
+				value={ quantity }
+				min={ minQuantity }
+				max={ maxQuantity }
+				step={ multipleOf }
+				disabled={ isDisabled }
+				onChange={ dispatchActions.setQuantity }
+			/>
+			<AddToCartButton />
+		</>
+	);
+};
+
+export default Simple;