/* eslint-disable @woocommerce/dependency-group */
/* eslint-disable @typescript-eslint/ban-ts-comment */
/**
 * External dependencies
 */
import { __ } from '@wordpress/i18n';
import {
	createInterpolateElement,
	useCallback,
	useMemo,
	useEffect,
} from '@wordpress/element';
import { Link } from '@woocommerce/components';
import { Spinner } from '@wordpress/components';

// @ts-expect-error Missing type in core-data.
import { __experimentalBlockPatternsList as BlockPatternList } from '@wordpress/block-editor';
import { recordEvent } from '@woocommerce/tracks';

/**
 * 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';

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

	const homePatterns = useMemo( () => {
		return Object.entries( homeTemplates ).map(
			( [ templateName, patterns ] ) => {
				return {
					name: templateName,
					title: templateName,
					blocks: patterns.reduce(
						( acc: BlockInstance[], pattern ) => [
							...acc,
							...pattern.blocks,
						],
						[]
					),
					blockTypes: [ '' ],
					categories: [ '' ],
					content: '',
					source: '',
				};
			}
		);
	}, [ homeTemplates ] );

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

		const homeBlocks = blocks.slice( 1, -1 );
		const _currentSelectedPattern = homePatterns.find( ( pattern ) => {
			if ( homeBlocks.length !== pattern.blocks.length ) {
				return false;
			}
			return homeBlocks.every(
				( block, index ) => block.name === pattern.blocks[ index ].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 ] );

	return (
		<SidebarNavigationScreen
			title={ __( 'Change your homepage', 'woocommerce' ) }
			description={ createInterpolateElement(
				__(
					'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'
				),
				{
					EditorLink: (
						<Link
							onClick={ () => {
								recordEvent(
									'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">
						{ isLoading ? (
							<span className="components-placeholder__preview">
								<Spinner />
							</span>
						) : (
							<BlockPatternList
								shownPatterns={ homePatterns }
								blockPatterns={ homePatterns }
								onClickPattern={ onClickPattern }
								label={ 'Homepage' }
								orientation="vertical"
								category={ 'homepage' }
								isDraggable={ false }
								showTitlesAsTooltip={ false }
							/>
						) }
					</div>
				</div>
			}
		/>
	);
};