/**
 * External dependencies
 */
import { __ } from '@wordpress/i18n';
import { useSelect, useDispatch } from '@wordpress/data';
import { decodeEntities } from '@wordpress/html-entities';
import { Card, CardHeader, CardFooter, Button } from '@wordpress/components';
import { useEffect, useRef, useState } from '@wordpress/element';
import { EllipsisMenu, List, Pill } from '@woocommerce/components';
import { Text } from '@woocommerce/experimental';
import {
	ONBOARDING_STORE_NAME,
	PAYMENT_GATEWAYS_STORE_NAME,
	PLUGINS_STORE_NAME,
	Plugin,
	PluginsStoreActions,
} from '@woocommerce/data';
import { recordEvent } from '@woocommerce/tracks';
import ExternalIcon from 'gridicons/dist/external';

/**
 * Internal dependencies
 */
import './payment-recommendations.scss';
import { createNoticesFromResponse } from '../lib/notices';
import { getPluginSlug } from '~/utils';

const SEE_MORE_LINK =
	'https://woocommerce.com/product-category/woocommerce-extensions/payment-gateways/?utm_source=payments_recommendations';

const WcPayPromotionGateway = document.querySelector(
	'[data-gateway_id="pre_install_woocommerce_payments_promotion"]'
);

const PaymentRecommendations: React.FC = () => {
	const [ installingPlugin, setInstallingPlugin ] = useState< string | null >(
		null
	);
	const [ isDismissed, setIsDismissed ] = useState< boolean >( false );
	const [ isInstalled, setIsInstalled ] = useState< boolean >( false );
	const {
		installAndActivatePlugins,
		dismissRecommendedPlugins,
	}: PluginsStoreActions = useDispatch( PLUGINS_STORE_NAME );
	const { createNotice } = useDispatch( 'core/notices' );

	const {
		installedPaymentGateway,
		installedPaymentGateways,
		paymentGatewaySuggestions,
		isResolving,
	} = useSelect(
		( select ) => {
			const installingGatewayId =
				isInstalled && getPluginSlug( installingPlugin );
			return {
				installedPaymentGateway:
					installingGatewayId &&
					select( PAYMENT_GATEWAYS_STORE_NAME ).getPaymentGateway(
						installingGatewayId
					),
				installedPaymentGateways: select( PAYMENT_GATEWAYS_STORE_NAME )
					.getPaymentGateways()
					.reduce( ( gateways, gateway ) => {
						if ( installingGatewayId === gateway.id ) {
							return gateways;
						}
						gateways[ gateway.id ] = true;
						return gateways;
					}, {} ),
				isResolving: select( ONBOARDING_STORE_NAME ).isResolving(
					'getPaymentGatewaySuggestions'
				),
				paymentGatewaySuggestions: select(
					ONBOARDING_STORE_NAME
				).getPaymentGatewaySuggestions(),
			};
		},
		[ isInstalled ]
	);

	const triggeredPageViewRef = useRef( false );
	const shouldShowRecommendations =
		paymentGatewaySuggestions &&
		paymentGatewaySuggestions.length > 0 &&
		! isDismissed;

	useEffect( () => {
		if (
			( shouldShowRecommendations ||
				( WcPayPromotionGateway && ! isResolving ) ) &&
			! triggeredPageViewRef.current
		) {
			triggeredPageViewRef.current = true;
			const eventProps = ( paymentGatewaySuggestions || [] ).reduce(
				( props, plugin ) => {
					if ( plugin.plugins && plugin.plugins.length > 0 ) {
						return {
							...props,
							[ plugin.plugins[ 0 ].replace( /\-/g, '_' ) +
							'_displayed' ]: true,
						};
					}
					return props;
				},
				{
					woocommerce_payments_displayed: !! WcPayPromotionGateway,
				}
			);
			recordEvent(
				'settings_payments_recommendations_pageview',
				eventProps
			);
		}
	}, [ shouldShowRecommendations, WcPayPromotionGateway, isResolving ] );

	useEffect( () => {
		if ( ! installedPaymentGateway ) {
			return;
		}
		window.location.href = installedPaymentGateway.settings_url;
	}, [ installedPaymentGateway ] );

	if ( ! shouldShowRecommendations ) {
		return null;
	}
	const dismissPaymentRecommendations = async () => {
		setIsDismissed( true );
		recordEvent( 'settings_payments_recommendations_dismiss', {} );
		const success = await dismissRecommendedPlugins( 'payments' );
		if ( ! success ) {
			setIsDismissed( false );
			createNotice(
				'error',
				__(
					'There was a problem hiding the "Additional ways to get paid" card.',
					'woocommerce-admin'
				)
			);
		}
	};

	const setupPlugin = ( plugin: Plugin ) => {
		if ( installingPlugin ) {
			return;
		}
		setInstallingPlugin( plugin.id );
		recordEvent( 'settings_payments_recommendations_setup', {
			extension_selected: plugin.plugins[ 0 ],
		} );
		installAndActivatePlugins( [ plugin.plugins[ 0 ] ] )
			.then( () => {
				setIsInstalled( true );
			} )
			.catch( ( response: { errors: Record< string, string > } ) => {
				createNoticesFromResponse( response );
				setInstallingPlugin( null );
			} );
	};

	const pluginsList = ( paymentGatewaySuggestions || [] )
		.filter( ( plugin: Plugin ) => {
			return (
				! installedPaymentGateways[ plugin.id ] &&
				plugin.plugins?.length &&
				( ! window.wcAdminFeatures[ 'wc-pay-promotion' ] ||
					! plugin.id.startsWith( 'woocommerce_payments' ) )
			);
		} )
		.map( ( plugin: Plugin ) => {
			return {
				key: plugin.id,
				title: (
					<>
						{ plugin.title }
						{ plugin.recommended && (
							<Pill>
								{ __( 'Recommended', 'woocommerce-admin' ) }
							</Pill>
						) }
					</>
				),
				content: decodeEntities( plugin.content ),
				after: (
					<Button
						isSecondary
						onClick={ () => setupPlugin( plugin ) }
						isBusy={ installingPlugin === plugin.id }
						disabled={ !! installingPlugin }
					>
						{ plugin.actionText ||
							__( 'Get started', 'woocommerce-admin' ) }
					</Button>
				),
				before: (
					<img src={ plugin.square_image || plugin.image } alt="" />
				),
			};
		} );

	return (
		<Card size="medium" className="woocommerce-recommended-payments-card">
			<CardHeader>
				<div className="woocommerce-recommended-payments-card__header">
					<Text
						variant="title.small"
						as="p"
						size="20"
						lineHeight="28px"
					>
						{ __(
							'Additional ways to get paid',
							'woocommerce-admin'
						) }
					</Text>
					<Text
						className={
							'woocommerce-recommended-payments__header-heading'
						}
						variant="caption"
						as="p"
						size="12"
						lineHeight="16px"
					>
						{ __(
							'We recommend adding one of the following payment extensions to your store. The extension will be installed and activated for you when you click "Get started".',
							'woocommerce-admin'
						) }
					</Text>
				</div>
				<div className="woocommerce-card__menu woocommerce-card__header-item">
					<EllipsisMenu
						label={ __( 'Task List Options', 'woocommerce-admin' ) }
						renderContent={ () => (
							<div className="woocommerce-review-activity-card__section-controls">
								<Button
									onClick={ dismissPaymentRecommendations }
								>
									{ __( 'Hide this', 'woocommerce-admin' ) }
								</Button>
							</div>
						) }
					/>
				</div>
			</CardHeader>
			<List items={ pluginsList } />
			<CardFooter>
				<Button href={ SEE_MORE_LINK } target="_blank" isTertiary>
					{ __( 'See more options', 'woocommerce-admin' ) }
					<ExternalIcon size={ 18 } />
				</Button>
			</CardFooter>
		</Card>
	);
};

export default PaymentRecommendations;