/* eslint-disable @woocommerce/dependency-group */
/* eslint-disable @typescript-eslint/ban-ts-comment */
/**
 * External dependencies
 */
import { __ } from '@wordpress/i18n';
import {
	createInterpolateElement,
	useCallback,
	useMemo,
	useEffect,
	useContext,
	useState,
} from '@wordpress/element';
import { Link } from '@woocommerce/components';
import { Spinner, Button, Modal, CheckboxControl } from '@wordpress/components';
// @ts-expect-error Missing type.
import { unlock } from '@wordpress/edit-site/build-module/lock-unlock';
// @ts-expect-error No types for this exist yet.
import { store as coreStore } from '@wordpress/core-data';
import {
	__experimentalBlockPatternsList as BlockPatternList,
	store as blockEditorStore,
	// @ts-expect-error No types for this exist yet.
} from '@wordpress/block-editor';
// @ts-expect-error Missing type in core-data.
import { useIsSiteEditorLoading } from '@wordpress/edit-site/build-module/components/layout/hooks';
import interpolateComponents from '@automattic/interpolate-components';

/**
 * Internal dependencies
 */
import { SidebarNavigationScreen } from '../sidebar-navigation-screen';
import { ADMIN_URL } from '~/utils/admin-settings';
import { useEditorBlocks } from '../../hooks/use-editor-blocks';
import { useHomeTemplates } from '../../hooks/use-home-templates';
import { BlockInstance } from '@wordpress/blocks';
import { useSelectedPattern } from '../../hooks/use-selected-pattern';
import { useEditorScroll } from '../../hooks/use-editor-scroll';
import { FlowType } from '~/customize-store/types';
import { CustomizeStoreContext } from '~/customize-store/assembler-hub';
import { select, useSelect } from '@wordpress/data';

import { trackEvent } from '~/customize-store/tracking';
import {
	PRODUCT_HERO_PATTERN_BUTTON_STYLE,
	findButtonBlockInsideCoverBlockProductHeroPatternAndUpdate,
} from '../../utils/hero-pattern';
import { useNetworkStatus } from '~/utils/react-hooks/use-network-status';
import { isIframe, sendMessageToParent } from '~/customize-store/utils';
import { isTrackingAllowed } from '../../utils/is-tracking-allowed';
import './style.scss';
import { useIsActiveNewNeutralVariation } from '../../hooks/use-is-active-new-neutral-variation';

export const SidebarNavigationScreenHomepage = ( {
	onNavigateBackClick,
}: {
	onNavigateBackClick: () => void;
} ) => {
	const { scroll } = useEditorScroll( {
		editorSelector: '.woocommerce-customize-store__block-editor iframe',
		scrollDirection: 'top',
	} );
	const { isLoading, homeTemplates } = useHomeTemplates();
	// eslint-disable-next-line react-hooks/exhaustive-deps
	const { selectedPattern, setSelectedPattern } = useSelectedPattern();

	const currentTemplate = useSelect(
		( sel ) =>
			// @ts-expect-error No types for this exist yet.
			sel( coreStore ).__experimentalGetTemplateForLink( '/' ),
		[]
	);

	const [ blocks, , onChange ] = useEditorBlocks(
		'wp_template',
		currentTemplate?.id ?? ''
	);

	const onClickPattern = useCallback(
		( pattern, selectedBlocks ) => {
			if ( pattern === selectedPattern ) {
				return;
			}
			setSelectedPattern( pattern );
			onChange(
				[ blocks[ 0 ], ...selectedBlocks, blocks[ blocks.length - 1 ] ],
				{ selection: {} }
			);
			scroll();
		},
		[ selectedPattern, setSelectedPattern, onChange, blocks, scroll ]
	);

	const isEditorLoading = useIsSiteEditorLoading();

	const isActiveNewNeutralVariation = useIsActiveNewNeutralVariation();

	const homePatterns = useMemo( () => {
		return Object.entries( homeTemplates ).map(
			( [ templateName, patterns ] ) => {
				if ( templateName === 'template1' ) {
					return {
						name: templateName,
						title: templateName,
						blocks: patterns.reduce(
							( acc: BlockInstance[], pattern ) => {
								const parsedPattern = unlock(
									select( blockEditorStore )
								).__experimentalGetParsedPattern(
									pattern.name
								);

								if ( ! parsedPattern ) {
									return acc;
								}

								if ( ! isActiveNewNeutralVariation ) {
									return [ ...acc, ...parsedPattern.blocks ];
								}
								const updatedBlocks =
									findButtonBlockInsideCoverBlockProductHeroPatternAndUpdate(
										parsedPattern.blocks,
										( buttonBlock: BlockInstance ) => {
											buttonBlock.attributes.style =
												PRODUCT_HERO_PATTERN_BUTTON_STYLE;
										}
									);

								return [ ...acc, ...updatedBlocks ];
							},
							[]
						),
						blockTypes: [ '' ],
						categories: [ '' ],
						content: '',
						source: '',
					};
				}

				return {
					name: templateName,
					title: templateName,
					blocks: patterns.reduce(
						( acc: BlockInstance[], pattern ) => {
							const parsedPattern = unlock(
								select( blockEditorStore )
							).__experimentalGetParsedPattern( pattern.name );

							if ( ! parsedPattern ) {
								return acc;
							}

							return [ ...acc, ...parsedPattern.blocks ];
						},
						[]
					),
					blockTypes: [ '' ],
					categories: [ '' ],
					content: '',
					source: '',
				};
			}
		);
	}, [ homeTemplates, isActiveNewNeutralVariation ] );

	useEffect( () => {
		if (
			selectedPattern ||
			! blocks.length ||
			! homePatterns.length ||
			isLoading ||
			isEditorLoading
		) {
			return;
		}

		const currentSelectedPattern = homePatterns.find( ( patterns ) => {
			//'blocks' contains all blocks in the template, including the
			// header and footer blocks, while the 'patterns.blocks' does
			// not. For that reason we are removing the first and last
			// blocks from the 'blocks' to be able to compare then
			const homeBlocks = blocks.slice( 1, blocks.length - 1 );

			if ( patterns.blocks.length !== homeBlocks.length ) {
				return false;
			}

			return homeBlocks.every(
				( block, i ) => block.name === patterns.blocks[ i ].name
			);
		} );

		setSelectedPattern( currentSelectedPattern );
		// eslint-disable-next-line react-hooks/exhaustive-deps -- we don't want to re-run this effect when currentSelectedPattern changes
	}, [ blocks, homePatterns, isLoading, isEditorLoading ] );

	const { context, sendEvent } = useContext( CustomizeStoreContext );
	const aiOnline = context.flowType === FlowType.AIOnline;

	const title = aiOnline
		? __( 'Change your homepage', 'woocommerce' )
		: __( 'Choose your homepage', 'woocommerce' );
	const sidebarMessage = aiOnline
		? __(
				'Based on the most successful stores in your industry and location, our AI tool has recommended this template for your business. Prefer a different layout? Choose from the templates below now, or later via the <EditorLink>Editor</EditorLink>.',
				'woocommerce'
		  )
		: __(
				'Create an engaging homepage by selecting one of our pre-designed layouts. You can continue customizing this page, including the content, later via the <EditorLink>Editor</EditorLink>.',
				'woocommerce'
		  );

	const isNetworkOffline = useNetworkStatus();
	const isPTKPatternsAPIAvailable = context.isPTKPatternsAPIAvailable;

	let notice;
	if ( isNetworkOffline ) {
		notice = __(
			"Looks like we can't detect your network. Please double-check your internet connection and refresh the page.",
			'woocommerce'
		);
	} else if ( ! isPTKPatternsAPIAvailable ) {
		notice = __(
			"Unfortunately, we're experiencing some technical issues — please come back later to access more patterns.",
			'woocommerce'
		);
	} else if ( ! isTrackingAllowed() ) {
		notice = __(
			'Opt in to <OptInModal>usage tracking</OptInModal> to get access to more patterns.',
			'woocommerce'
		);
	}

	const [ isModalOpen, setIsModalOpen ] = useState( false );

	const openModal = () => setIsModalOpen( true );
	const closeModal = () => setIsModalOpen( false );

	const [ optInDataSharing, setIsOptInDataSharing ] =
		useState< boolean >( true );

	const optIn = () => {
		trackEvent(
			'customize_your_store_assembler_hub_opt_in_usage_tracking'
		);
	};

	const skipOptIn = () => {
		trackEvent(
			'customize_your_store_assembler_hub_skip_opt_in_usage_tracking'
		);
	};

	return (
		<SidebarNavigationScreen
			title={ title }
			onNavigateBackClick={ onNavigateBackClick }
			description={ createInterpolateElement( sidebarMessage, {
				EditorLink: (
					<Link
						onClick={ () => {
							trackEvent(
								'customize_your_store_assembler_hub_editor_link_click',
								{
									source: 'homepage',
								}
							);
							window.open(
								`${ ADMIN_URL }site-editor.php`,
								'_blank'
							);
							return false;
						} }
						href=""
					/>
				),
			} ) }
			content={
				<div className="woocommerce-customize-store__sidebar-homepage-content">
					<div className="edit-site-sidebar-navigation-screen-patterns__group-homepage">
						{ /* This is necessary to fix this issue: https://github.com/woocommerce/woocommerce/issues/45711
						  If the user switch the homepage while the editor is loading, header and footer could disappear.
						  For more details check: https://github.com/woocommerce/woocommerce/pull/45735
						  */ }
						{ isLoading || isEditorLoading ? (
							<span className="components-placeholder__preview">
								<Spinner />
							</span>
						) : (
							<BlockPatternList
								shownPatterns={ homePatterns }
								blockPatterns={ homePatterns }
								onClickPattern={ onClickPattern }
								label={ 'Homepage' }
								orientation="vertical"
								category={ 'homepage' }
								isDraggable={ false }
								showTitlesAsTooltip={ false }
							/>
						) }
						{ notice && (
							<div className="woocommerce-customize-store_sidebar-patterns-upgrade-notice">
								<h4>
									{ __(
										'Want more patterns?',
										'woocommerce'
									) }
								</h4>
								<p>
									{ createInterpolateElement( notice, {
										OptInModal: (
											<Button
												onClick={ () => {
													openModal();
												} }
												variant="link"
											/>
										),
									} ) }
								</p>
								{ isModalOpen && (
									<Modal
										className={
											'woocommerce-customize-store__opt-in-usage-tracking-modal'
										}
										title={ __(
											'Opt in to usage tracking',
											'woocommerce'
										) }
										onRequestClose={ closeModal }
										shouldCloseOnClickOutside={ false }
									>
										<CheckboxControl
											className="core-profiler__checkbox"
											label={ interpolateComponents( {
												mixedString: __(
													'I agree to share my data to tailor my store setup experience, get more relevant content, and help make WooCommerce better for everyone. You can opt out at any time in WooCommerce settings. {{link}}Learn more about usage tracking{{/link}}.',
													'woocommerce'
												),
												components: {
													link: (
														<Link
															href="https://woocommerce.com/usage-tracking?utm_medium=product"
															target="_blank"
															type="external"
														/>
													),
												},
											} ) }
											checked={ optInDataSharing }
											onChange={ setIsOptInDataSharing }
										/>
										<div className="woocommerce-customize-store__design-change-warning-modal-footer">
											<Button
												onClick={ () => {
													skipOptIn();
													closeModal();
												} }
												variant="link"
											>
												{ __(
													'Cancel',
													'woocommerce'
												) }
											</Button>
											<Button
												onClick={ () => {
													optIn();
													if ( isIframe( window ) ) {
														sendMessageToParent( {
															type: 'INSTALL_PATTERNS',
														} );
													} else {
														sendEvent(
															'INSTALL_PATTERNS'
														);
													}
												} }
												variant="primary"
												disabled={ ! optInDataSharing }
											>
												{ __(
													'Opt in',
													'woocommerce'
												) }
											</Button>
										</div>
									</Modal>
								) }
							</div>
						) }
					</div>
				</div>
			}
		/>
	);
};