/**
 * External dependencies
 */
import { useContext, useEffect, useState } from '@wordpress/element';
import { useQuery } from '@woocommerce/navigation';

/**
 * Internal dependencies
 */
import './content.scss';
import { Product, ProductType, SearchResultType } from '../product-list/types';
import { getAdminSetting } from '~/utils/admin-settings';
import Discover from '../discover/discover';
import Products from '../products/products';
import SearchResults from '../search-results/search-results';
import MySubscriptions from '../my-subscriptions/my-subscriptions';
import { MarketplaceContext } from '../../contexts/marketplace-context';
import { fetchSearchResults } from '../../utils/functions';
import { SubscriptionsContextProvider } from '../../contexts/subscriptions-context';
import {
	recordMarketplaceView,
	recordLegacyTabView,
} from '../../utils/tracking';
import InstallNewProductModal from '../install-flow/install-new-product-modal';
import Promotions from '../promotions/promotions';
import ConnectNotice from '~/marketplace/components/connect-notice/connect-notice';
import PluginInstallNotice from '../woo-update-manager-plugin/plugin-install-notice';
import SubscriptionsExpiredExpiringNotice from '~/marketplace/components/my-subscriptions/subscriptions-expired-expiring-notice';

export default function Content(): JSX.Element {
	const marketplaceContextValue = useContext( MarketplaceContext );
	const [ products, setProducts ] = useState< Product[] >( [] );
	const { setIsLoading, selectedTab, setHasBusinessServices } =
		marketplaceContextValue;
	const query = useQuery();

	// On initial load of the in-app marketplace, fetch extensions, themes and business services
	// and check if there are any business services available on WCCOM
	useEffect( () => {
		const categories = [ '', 'themes', 'business-services' ];
		const abortControllers = categories.map( () => new AbortController() );

		categories.forEach( ( category: string, index ) => {
			const params = new URLSearchParams();
			if ( category !== '' ) {
				params.append( 'category', category );
			}

			const wccomSettings = getAdminSetting( 'wccomHelper', false );
			if ( wccomSettings.storeCountry ) {
				params.append( 'country', wccomSettings.storeCountry );
			}

			fetchSearchResults( params, abortControllers[ index ].signal ).then(
				( productList ) => {
					if ( category === 'business-services' ) {
						setHasBusinessServices( productList.length > 0 );
					}
				}
			);
			return () => {
				abortControllers.forEach( ( controller ) => {
					controller.abort();
				} );
			};
		} );
		// eslint-disable-next-line react-hooks/exhaustive-deps
	}, [] );

	// Get the content for this screen
	useEffect( () => {
		const abortController = new AbortController();

		if (
			query.tab === undefined ||
			( query.tab && [ '', 'discover' ].includes( query.tab ) )
		) {
			return;
		}

		setIsLoading( true );
		setProducts( [] );

		const params = new URLSearchParams();

		if ( query.term ) {
			params.append( 'term', query.term );
		}

		if ( query.category ) {
			params.append(
				'category',
				query.category === '_all' ? '' : query.category
			);
		} else if ( query?.tab === 'themes' ) {
			params.append( 'category', 'themes' );
		} else if ( query?.tab === 'business-services' ) {
			params.append( 'category', 'business-services' );
		} else if ( query?.tab === 'search' ) {
			params.append( 'category', 'extensions-themes-business-services' );
		}

		const wccomSettings = getAdminSetting( 'wccomHelper', false );
		if ( wccomSettings.storeCountry ) {
			params.append( 'country', wccomSettings.storeCountry );
		}

		fetchSearchResults( params, abortController.signal )
			.then( ( productList ) => {
				setProducts( productList );
			} )
			.catch( () => {
				setProducts( [] );
			} )
			.finally( () => {
				// we are recording both the new and legacy events here for now
				// they're separate methods to make it easier to remove the legacy one later
				const marketplaceViewProps = {
					view: query?.tab,
					search_term: query?.term,
					product_type: query?.section,
					category: query?.category,
				};

				recordMarketplaceView( marketplaceViewProps );
				recordLegacyTabView( marketplaceViewProps );
				setIsLoading( false );
			} );
		return () => {
			abortController.abort();
		};
	}, [
		query.term,
		query.category,
		query?.tab,
		setIsLoading,
		query?.section,
	] );

	const renderContent = (): JSX.Element => {
		switch ( selectedTab ) {
			case 'extensions':
				return (
					<Products
						products={ products }
						categorySelector={ true }
						type={ ProductType.extension }
					/>
				);
			case 'themes':
				return (
					<Products
						products={ products }
						categorySelector={ true }
						type={ ProductType.theme }
					/>
				);
			case 'business-services':
				return (
					<Products
						products={ products }
						categorySelector={ true }
						type={ ProductType.businessService }
					/>
				);
			case 'search':
				return (
					<SearchResults
						products={ products }
						type={ SearchResultType.all }
					/>
				);
			case 'discover':
				return <Discover />;
			case 'my-subscriptions':
				return (
					<SubscriptionsContextProvider>
						<MySubscriptions />
					</SubscriptionsContextProvider>
				);
			default:
				return <></>;
		}
	};

	return (
		<div className="woocommerce-marketplace__content">
			<Promotions />
			<InstallNewProductModal products={ products } />
			{ selectedTab !== 'business-services' &&
				selectedTab !== 'my-subscriptions' && <ConnectNotice /> }
			{ selectedTab !== 'business-services' && <PluginInstallNotice /> }
			{ selectedTab !== 'business-services' && (
				<SubscriptionsExpiredExpiringNotice type="expired" />
			) }
			{ selectedTab !== 'business-services' && (
				<SubscriptionsExpiredExpiringNotice type="expiring" />
			) }

			{ renderContent() }
		</div>
	);
}