import { Button, FormLabel } from '@automattic/components';
import {
	useSiteResetContentSummaryQuery,
	useSiteResetMutation,
	useSiteResetStatusQuery,
} from '@automattic/data-stores';
import { useQueryClient } from '@tanstack/react-query';
import { createInterpolateElement, useState } from '@wordpress/element';
import { sprintf } from '@wordpress/i18n';
import { localize } from 'i18n-calypso';
import { connect } from 'react-redux';
import FormSettingExplanation from 'calypso/components/forms/form-setting-explanation';
import FormTextInput from 'calypso/components/forms/form-text-input';
import InlineSupportLink from 'calypso/components/inline-support-link';
import { LoadingBar } from 'calypso/components/loading-bar';
import NavigationHeader from 'calypso/components/navigation-header';
import { Panel, PanelCard, PanelCardHeading } from 'calypso/components/panel';
import PageViewTracker from 'calypso/lib/analytics/page-view-tracker';
import { EVERY_FIVE_SECONDS, Interval } from 'calypso/lib/interval';
import { useDispatch, useSelector } from 'calypso/state';
import { errorNotice, successNotice } from 'calypso/state/notices/actions';
import isUnlaunchedSite from 'calypso/state/selectors/is-unlaunched-site';
import { getSite, getSiteDomain, isJetpackSite } from 'calypso/state/sites/selectors';
import { getSelectedSiteId, getSelectedSiteSlug } from 'calypso/state/ui/selectors';
import { useSetFeatureBreadcrumb } from '../../../../hooks/breadcrumbs/use-set-feature-breadcrumb';
import { DIFMUpsell } from '../../../components/difm-upsell-banner';
import ExportNotice from '../export-notice';

import './style.scss';

function SiteResetCard( {
	translate,
	selectedSiteSlug,
	siteDomain,
	isAtomic,
	isUnlaunchedSite: isUnlaunchedSiteProp,
	site,
} ) {
	const siteId = useSelector( getSelectedSiteId );
	const dispatch = useDispatch();
	const queryClient = useQueryClient();

	const { data } = useSiteResetContentSummaryQuery( siteId );
	const { data: status, refetch: refetchResetStatus } = useSiteResetStatusQuery( siteId );
	const [ isDomainConfirmed, setDomainConfirmed ] = useState( false );
	const [ resetComplete, setResetComplete ] = useState( false );
	const title = translate( 'Reset site' );

	useSetFeatureBreadcrumb( { siteId, title } );

	const checkStatus = async () => {
		if ( status?.status !== 'completed' && isAtomic ) {
			const {
				data: { status: latestStatus },
			} = await refetchResetStatus();

			if ( latestStatus === 'completed' ) {
				queryClient.invalidateQueries();
				dispatch(
					successNotice( translate( 'Your site was successfully reset' ), {
						id: 'site-reset-success-notice',
						duration: 4000,
					} )
				);
				setResetComplete( true );
			}
		}
	};

	const handleError = () => {
		dispatch(
			errorNotice( translate( 'We were unable to reset your site' ), {
				id: 'site-reset-failure-notice',
				duration: 6000,
			} )
		);
	};

	const handleResult = ( result ) => {
		if ( result.success ) {
			if ( isAtomic ) {
				refetchResetStatus();
			} else {
				queryClient.invalidateQueries();
				dispatch(
					successNotice( translate( 'Your site was successfully reset' ), {
						id: 'site-reset-success-notice',
						duration: 4000,
					} )
				);
				setResetComplete( true );
			}
		} else {
			handleError();
		}
	};

	const { resetSite, isLoading } = useSiteResetMutation( {
		onSuccess: handleResult,
		onError: handleError,
	} );

	const contentInfo = () => {
		const result = [];

		if ( data?.post_count > 0 ) {
			const message =
				data.post_count === 1
					? translate( '1 post' )
					: sprintf( translate( '%d posts' ), data.post_count );
			result.push( {
				message,
				url: `/posts/${ siteDomain }`,
			} );
		}

		if ( data?.page_count > 0 ) {
			const message =
				data.page_count === 1
					? translate( '1 page' )
					: sprintf( translate( '%d pages' ), data.page_count );
			result.push( {
				message,
				url: `/pages/${ siteDomain }`,
			} );
		}

		if ( data?.media_count > 0 ) {
			const message =
				data.media_count === 1
					? translate( '1 media item' )
					: sprintf( translate( '%d media items' ), data.media_count );
			result.push( {
				message,
				url: `/media/${ siteDomain }`,
			} );
		}

		if ( data?.plugin_count > 0 ) {
			const message =
				data.plugin_count === 1
					? translate( '1 plugin' )
					: sprintf( translate( '%d plugins' ), data.plugin_count );
			result.push( {
				message,
				url: `https://${ siteDomain }/wp-admin/plugins.php`,
			} );
		}
		return result;
	};

	const handleReset = async () => {
		if ( ! isDomainConfirmed ) {
			return;
		}
		resetSite( siteId );
		setDomainConfirmed( false );
	};

	const instructions = createInterpolateElement(
		sprintf(
			// translators: %s is the site domain
			translate(
				"Resetting <strong>%s</strong> will remove all of its content but keep the site and its URL up and running. Keep in mind you'll also lose any modifications you've made to your current theme."
			),
			siteDomain
		),
		{
			strong: <strong />,
		}
	);

	const isResetInProgress = status?.status === 'in-progress' && isAtomic;

	const ctaText =
		! isAtomic && isLoading ? translate( 'Resetting site' ) : translate( 'Reset site' );

	const content = contentInfo();

	const renderBody = () => {
		if ( resetComplete ) {
			const message = createInterpolateElement(
				sprintf(
					// translators: %s is the site domain
					translate(
						'<strong>%s</strong> has been successfully reset and its content removed. Head to <a>My Home</a> to start building your new site.'
					),
					siteDomain
				),
				{
					strong: <strong />,
					a: <a href={ `/home/${ selectedSiteSlug }` } />,
				}
			);
			return (
				<PanelCard>
					<PanelCardHeading>{ translate( 'Site reset successful' ) }</PanelCardHeading>
					<p>{ message }</p>
				</PanelCard>
			);
		} else if ( isResetInProgress ) {
			return (
				<PanelCard>
					<>
						<PanelCardHeading>{ translate( 'Resetting site' ) }</PanelCardHeading>
						<LoadingBar progress={ status?.progress } />
						<p className="reset-site__in-progress-message">
							{ translate( "We're resetting your site. We'll email you once it's ready." ) }
						</p>
					</>
				</PanelCard>
			);
		}
		return (
			<>
				<PanelCard>
					<PanelCardHeading>{ translate( 'Confirm site reset' ) }</PanelCardHeading>
					<p>{ instructions }</p>
					{ content.length > 0 && (
						<>
							<p>{ translate( 'The following content will be removed:' ) }</p>
							<ul>
								{ content.map( ( { message, url } ) => {
									if ( url ) {
										return (
											<li key={ message }>
												<a href={ url }>{ message }</a>
											</li>
										);
									}
									return <li key={ message }>{ message }</li>;
								} ) }
							</ul>
						</>
					) }
					<hr />
					{ ! isAtomic && (
						<ExportNotice
							siteSlug={ selectedSiteSlug }
							siteId={ siteId }
							warningText={ translate(
								'Before resetting your site, consider exporting your content as a backup.'
							) }
						/>
					) }
					<FormLabel htmlFor="confirmResetInput" className="reset-site__confirm-label">
						{ createInterpolateElement(
							sprintf(
								// translators: %s is the site domain
								translate(
									"Type <strong>%s</strong> below to confirm you're ready to reset the site:"
								),
								siteDomain
							),
							{
								strong: <strong />,
							}
						) }
					</FormLabel>
					<div className="site-settings__reset-site-controls">
						<FormTextInput
							autoCapitalize="off"
							aria-required="true"
							id="confirmResetInput"
							disabled={ isLoading }
							style={ { flex: 1 } }
							onChange={ ( event ) =>
								setDomainConfirmed( event.currentTarget.value.trim() === siteDomain )
							}
						/>
						<Button
							primary // eslint-disable-line wpcalypso/jsx-classname-namespace
							onClick={ handleReset }
							disabled={ isLoading || ! isDomainConfirmed }
							busy={ isLoading }
						>
							{ ctaText }
						</Button>
					</div>
					{ isAtomic && (
						<FormSettingExplanation>
							{ createInterpolateElement(
								translate(
									"Having second thoughts? Don't fret, you'll be able to restore your site using the most recent backup in the <a>Activity Log</a>."
								),
								{
									a: <a href={ `/activity-log/${ selectedSiteSlug }` } />,
								}
							) }
						</FormSettingExplanation>
					) }
				</PanelCard>
			</>
		);
	};

	return (
		<Panel className="settings-administration__reset-site">
			{ ! isLoading && <Interval onTick={ checkStatus } period={ EVERY_FIVE_SECONDS } /> }
			<NavigationHeader
				title={ title }
				subtitle={ translate(
					"Remove all posts, pages, and media to start fresh while keeping your site's address. {{a}}Learn more.{{/a}}",
					{
						components: {
							a: <InlineSupportLink supportContext="site-reset" showIcon={ false } />,
						},
					}
				) }
			/>
			<PageViewTracker path="/settings/start-reset/:site" title="Settings > Site Reset" />
			{ renderBody() }
			<DIFMUpsell
				site={ site }
				isUnlaunchedSite={ isUnlaunchedSiteProp }
				urlRef="unlaunched-site-reset"
			/>
		</Panel>
	);
}

export default connect( ( state ) => {
	const siteId = getSelectedSiteId( state );
	const siteDomain = getSiteDomain( state, siteId );
	const site = getSite( state, siteId );
	return {
		siteDomain,
		site,
		selectedSiteSlug: getSelectedSiteSlug( state ),
		isAtomic: isJetpackSite( state, siteId ),
		isUnlaunchedSite: isUnlaunchedSite( state, siteId ),
	};
} )( localize( SiteResetCard ) );