/**
 * External dependencies
 */
import { render, screen, waitFor } from '@testing-library/react';
import { previewCart } from '@woocommerce/resource-previews';
import { dispatch } from '@wordpress/data';
import { CART_STORE_KEY as storeKey } from '@woocommerce/block-data';
import { default as fetchMock } from 'jest-fetch-mock';

/**
 * Internal dependencies
 */
import CartBlock from '../block';
import { defaultCartState } from '../../../../data/default-states';

describe( 'Testing cart', () => {
	beforeEach( async () => {
		fetchMock.mockResponse( ( req ) => {
			if ( req.url.match( /wc\/store\/cart/ ) ) {
				return Promise.resolve( JSON.stringify( previewCart ) );
			}
			return Promise.resolve( '' );
		} );
		// need to clear the store resolution state between tests.
		await dispatch( storeKey ).invalidateResolutionForStore();
		await dispatch( storeKey ).receiveCart( defaultCartState.cartData );
	} );

	afterEach( () => {
		fetchMock.resetMocks();
	} );

	it( 'renders cart if there are items in the cart', async () => {
		render(
			<CartBlock
				emptyCart={ null }
				attributes={ {
					isShippingCalculatorEnabled: false,
				} }
			/>
		);
		await waitFor( () => expect( fetchMock ).toHaveBeenCalled() );
		expect(
			screen.getByText( /Proceed to Checkout/i )
		).toBeInTheDocument();

		expect( fetchMock ).toHaveBeenCalledTimes( 1 );
	} );

	it( 'renders empty cart if there are no items in the cart', async () => {
		fetchMock.mockResponse( ( req ) => {
			if ( req.url.match( /wc\/store\/cart/ ) ) {
				return Promise.resolve(
					JSON.stringify( defaultCartState.cartData )
				);
			}
			return Promise.resolve( '' );
		} );
		render(
			<CartBlock
				emptyCart={ '<div>Empty Cart</div>' }
				attributes={ {
					isShippingCalculatorEnabled: false,
				} }
			/>
		);

		await waitFor( () => expect( fetchMock ).toHaveBeenCalled() );
		expect( screen.getByText( /Empty Cart/i ) ).toBeInTheDocument();
		expect( fetchMock ).toHaveBeenCalledTimes( 1 );
	} );

	it( 'renders correct cart line subtotal when currency has 0 decimals', async () => {
		fetchMock.mockResponse( ( req ) => {
			if ( req.url.match( /wc\/store\/cart/ ) ) {
				const cart = {
					...previewCart,
					// Make it so there is only one item to simplify things.
					items: [
						{
							...previewCart.items[ 0 ],
							totals: {
								...previewCart.items[ 0 ].totals,
								// Change price format so there are no decimals.
								currency_minor_unit: 0,
								currency_prefix: '',
								currency_suffix: '€',
								line_subtotal: '16',
								line_total: '18',
							},
						},
					],
				};

				return Promise.resolve( JSON.stringify( cart ) );
			}
		} );
		render( <CartBlock emptyCart={ null } attributes={ {} } /> );

		await waitFor( () => expect( fetchMock ).toHaveBeenCalled() );
		expect( screen.getAllByRole( 'cell' )[ 1 ] ).toHaveTextContent( '16€' );
	} );
} );