import {
	PLAN_PERSONAL,
	WPCOM_FEATURES_FULL_ACTIVITY_LOG,
	getPlan,
} from '@automattic/calypso-products';
import { withMobileBreakpoint } from '@automattic/viewport-react';
import clsx from 'clsx';
import { localize } from 'i18n-calypso';
import PropTypes from 'prop-types';
import { Component, createRef } from 'react';
import { connect } from 'react-redux';
import ActivityCard from 'calypso/components/activity-card';
import PlanUpsellCard from 'calypso/components/activity-card/plan-upsell';
import QueryJetpackCredentialsStatus from 'calypso/components/data/query-jetpack-credentials-status';
import QueryRewindCapabilities from 'calypso/components/data/query-rewind-capabilities';
import QueryRewindPolicies from 'calypso/components/data/query-rewind-policies';
import QueryRewindState from 'calypso/components/data/query-rewind-state';
import EmptyContent from 'calypso/components/empty-content';
import { withLocalizedMoment } from 'calypso/components/localized-moment';
import Pagination from 'calypso/components/pagination';
import { withApplySiteOffset } from 'calypso/components/site-offset';
import { isActivityBackup } from 'calypso/lib/jetpack/backup-utils';
import Filterbar from 'calypso/my-sites/activity/filterbar';
import { updateFilter } from 'calypso/state/activity-log/actions';
import { getCurrentUserLocale } from 'calypso/state/current-user/selectors';
import getActivityLogVisibleDays from 'calypso/state/rewind/selectors/get-activity-log-visible-days';
import getRewindPoliciesRequestStatus from 'calypso/state/rewind/selectors/get-rewind-policies-request-status';
import getActivityLogFilter from 'calypso/state/selectors/get-activity-log-filter';
import isRequestingSiteFeatures from 'calypso/state/selectors/is-requesting-site-features';
import isSiteAutomatedTransfer from 'calypso/state/selectors/is-site-automated-transfer';
import getIsSiteWPCOM from 'calypso/state/selectors/is-site-wpcom';
import siteHasFeature from 'calypso/state/selectors/site-has-feature';
import { getSelectedSiteId, getSelectedSiteSlug } from 'calypso/state/ui/selectors';
import VisibleDaysLimitUpsell from './visible-days-limit-upsell';
import './style.scss';

class ActivityCardList extends Component {
	static propTypes = {
		logs: PropTypes.array,
		pageSize: PropTypes.number.isRequired,
		showDateSeparators: PropTypes.bool,
		showFilter: PropTypes.bool,
		showPagination: PropTypes.bool,
		availableActions: PropTypes.array,
		onClickClone: PropTypes.func,
	};

	static defaultProps = {
		showDateSeparators: true,
		showFilter: true,
		showPagination: true,
		availableActions: [ 'rewind', 'download' ],
	};

	state = {
		initialFilterBarY: 0,
		masterBarHeight: 0,
		scrollTicking: false,
	};

	filterBarRef = null;

	constructor( props ) {
		super( props );

		this.onScroll = this.onScroll.bind( this );
		this.filterBarRef = createRef();
	}

	componentDidMount() {
		if ( this.props.isBreakpointActive ) {
			// Filter bar is only sticky on mobile
			window.addEventListener( 'scroll', this.onScroll );
		}
	}

	componentWillUnmount() {
		window.removeEventListener( 'scroll', this.onScroll );
	}

	onScroll = () => {
		const y = window.scrollY;

		if ( ! this.state.scrollTicking ) {
			// It's best practice to throttle scroll event for performance
			window.requestAnimationFrame( () => {
				this.stickFilterBar( y );
				this.setState( { scrollTicking: false } );
			} );

			this.setState( { scrollTicking: true } );
		}
	};

	stickFilterBar = ( scrollY ) => {
		const { initialFilterBarY, masterBarHeight } = this.state;
		const filterBar = this.filterBarRef.current;

		if ( ! filterBar ) {
			return;
		}

		if ( ! initialFilterBarY ) {
			this.setState( { initialFilterBarY: filterBar.getBoundingClientRect().top } );
		}

		if ( ! masterBarHeight ) {
			const masterBar = document.querySelector( '.masterbar' );

			this.setState( { masterBarHeight: masterBar ? masterBar.clientHeight : 0 } );
		}

		if ( initialFilterBarY && masterBarHeight ) {
			filterBar.classList.toggle( 'is-sticky', scrollY + masterBarHeight >= initialFilterBarY );
		}
	};

	changePage = ( pageNumber ) => {
		this.props.selectPage( this.props.siteId, pageNumber );
		window.scrollTo( 0, 0 );
	};

	splitLogsByDate( logs ) {
		const { applySiteOffset, moment, pageSize } = this.props;
		const logsByDate = [];
		let lastDate = null;
		let logsAdded = 0;

		for ( const log of logs ) {
			const activityDateMoment = ( applySiteOffset ?? moment )( log.activityDate );

			if ( logsAdded >= pageSize ) {
				if ( lastDate && lastDate.isSame( activityDateMoment, 'day' ) ) {
					logsByDate[ logsByDate.length - 1 ].hasMore = true;
				}
				break;
			} else {
				if ( lastDate && lastDate.isSame( activityDateMoment, 'day' ) ) {
					logsByDate[ logsByDate.length - 1 ].logs.push( log );
				} else {
					logsByDate.push( { date: activityDateMoment, logs: [ log ], hasMore: false } );
					lastDate = activityDateMoment;
				}
				logsAdded++;
			}
		}

		return logsByDate;
	}

	renderPlanUpsell( pageLogs ) {
		if ( pageLogs.length === 0 ) {
			return;
		}

		const upsellPlanName = getPlan( PLAN_PERSONAL )?.getTitle();

		return <PlanUpsellCard upsellPlanName={ upsellPlanName } />;
	}

	renderLogs( pageLogs ) {
		const {
			applySiteOffset,
			moment,
			showDateSeparators,
			translate,
			userLocale,
			availableActions,
			onClickClone,
			siteSlug,
			siteHasFullActivityLog,
		} = this.props;

		const today = ( applySiteOffset ?? moment )();

		const getPrimaryCardClassName = ( hasMore, dateLogsLength ) =>
			hasMore && dateLogsLength === 1
				? 'activity-card-list__primary-card-with-more'
				: 'activity-card-list__primary-card';

		const getSecondaryCardClassName = ( hasMore ) =>
			hasMore
				? 'activity-card-list__secondary-card-with-more'
				: 'activity-card-list__secondary-card';

		const dateFormat = userLocale === 'en' ? 'MMM Do' : 'LL';

		if ( pageLogs.length === 0 ) {
			return (
				<>
					<EmptyContent
						title={ translate( 'No matching events found.' ) }
						line={
							siteHasFullActivityLog
								? translate( 'Try adjusting your date range or activity type filters' )
								: null
						}
						action={ siteHasFullActivityLog ? translate( 'Remove all filters' ) : null }
						actionURL={ siteHasFullActivityLog ? '/activity-log/' + siteSlug : null }
					/>
				</>
			);
		}

		return pageLogs.map( ( { date, logs: dateLogs, hasMore }, index ) => (
			<div key={ `activity-card-list__date-group-${ index }` }>
				{ showDateSeparators && (
					<div className="activity-card-list__date-group-date">
						{ date &&
							( today?.isSame( date, 'day' ) ? translate( 'Today' ) : date.format( dateFormat ) ) }
					</div>
				) }
				<div className="activity-card-list__date-group-content">
					{ dateLogs.map( ( activity ) => (
						<ActivityCard
							activity={ activity }
							className={
								isActivityBackup( activity )
									? getPrimaryCardClassName( hasMore, dateLogs.length )
									: getSecondaryCardClassName( hasMore )
							}
							key={ activity.activityId }
							availableActions={ availableActions }
							onClickClone={ onClickClone }
						/>
					) ) }
				</div>
			</div>
		) );
	}

	/**
	 * Renders the filter bar for the activity card list.
	 *
	 * The filter bar visibility is determined based on the `showFilter` prop and the loading state.
	 * The filter bar becomes invisible while the `requestingRewindPolicies` or `requestingSiteFeatures` are ongoing.
	 * @returns the Filterbar component
	 */
	renderFilterbar() {
		const { filter, siteId, requestingRewindPolicies, requestingSiteFeatures, showFilter } =
			this.props;

		const isLoading = requestingRewindPolicies || requestingSiteFeatures;
		const shouldShowFilter = showFilter && ! isLoading;

		return (
			<div className="activity-card-list__filterbar-ctn" ref={ this.filterBarRef }>
				<Filterbar
					siteId={ siteId }
					filter={ filter }
					isLoading={ isLoading }
					isVisible={ shouldShowFilter }
					variant="compact"
				/>
			</div>
		);
	}

	renderData() {
		const {
			applySiteOffset,
			moment,
			visibleDays,
			filter,
			isBreakpointActive: isMobile,
			logs,
			pageSize,
			showPagination,
			siteHasFullActivityLog,
			isWPCOMSite,
		} = this.props;

		const visibleLimitCutoffDate = Number.isFinite( visibleDays )
			? ( applySiteOffset ?? moment )().subtract( visibleDays, 'days' )
			: undefined;
		const visibleLogs = visibleLimitCutoffDate
			? logs.filter( ( log ) =>
					( applySiteOffset ?? moment )( log.activityDate ).isSameOrAfter(
						visibleLimitCutoffDate,
						'day'
					)
			  )
			: logs;

		const { page: requestedPage } = filter;
		const pageCount = Math.ceil( visibleLogs.length / pageSize );
		const actualPage = Math.max( 1, Math.min( requestedPage, pageCount ) );

		const pageLogs = this.splitLogsByDate( visibleLogs.slice( ( actualPage - 1 ) * pageSize ) );
		const showLimitUpsell = visibleLogs.length < logs.length && actualPage >= pageCount;

		const wpcomLimitedActivityLog = isWPCOMSite && ! siteHasFullActivityLog;

		return (
			<>
				{ showPagination && ! wpcomLimitedActivityLog && (
					<Pagination
						compact={ isMobile }
						className="activity-card-list__pagination-top"
						key="activity-card-list__pagination-top"
						nextLabel="Older"
						page={ actualPage }
						pageClick={ this.changePage }
						perPage={ pageSize }
						prevLabel="Newer"
						total={ visibleLogs.length }
					/>
				) }
				{ this.renderLogs( pageLogs ) }
				{ wpcomLimitedActivityLog && this.renderPlanUpsell( pageLogs ) }
				{ showLimitUpsell && (
					<VisibleDaysLimitUpsell cardClassName="activity-card-list__primary-card-with-more" />
				) }
				{ showPagination && ! wpcomLimitedActivityLog && (
					<Pagination
						compact={ isMobile }
						className="activity-card-list__pagination-bottom"
						key="activity-card-list__pagination-bottom"
						nextLabel="Older"
						page={ actualPage }
						pageClick={ this.changePage }
						perPage={ pageSize }
						prevLabel="Newer"
						total={ visibleLogs.length }
					/>
				) }
			</>
		);
	}

	renderLoading() {
		const { showPagination, showDateSeparators, isBreakpointActive } = this.props;

		/* eslint-disable wpcalypso/jsx-classname-namespace */
		return (
			<div className="activity-card-list__loading-placeholder">
				{ showPagination && (
					<div
						className={ clsx( 'activity-card-list__pagination-top', {
							'is-compact': isBreakpointActive,
						} ) }
					/>
				) }
				<div key="activity-card-list__date-group-loading">
					{ showDateSeparators && (
						<div className="activity-card-list__date-group-date">
							<span>MMM Do</span>
						</div>
					) }
					<div className="activity-card-list__date-group-content">
						{ [ 1, 2, 3 ].map( ( i ) => (
							<div
								className="activity-card-list__secondary-card activity-card"
								key={ `loading-secondary-${ i }` }
							>
								<div className="activity-card__time">
									<div className="activity-card__time-text">Sometime</div>
								</div>
								<div className="card" />
							</div>
						) ) }
						<div className="activity-card-list__primary-card activity-card">
							<div className="activity-card__time">
								<div className="activity-card__time-text">Sometime</div>
							</div>
							<div className="card" />
						</div>
					</div>
				</div>
				{ showPagination && (
					<div
						className={ clsx( 'activity-card-list__pagination-bottom', {
							'is-compact': isBreakpointActive,
						} ) }
					/>
				) }
			</div>
		);
		/* eslint-disable wpcalypso/jsx-classname-namespace */
	}

	render() {
		const { requestingRewindPolicies, rewindPoliciesRequestError, siteId, logs, isAtomic } =
			this.props;

		if ( rewindPoliciesRequestError ) {
			return this.renderLoading();
		}

		const isLoading = ! logs || requestingRewindPolicies;

		return (
			<>
				<QueryRewindPolicies siteId={ siteId } />
				<QueryRewindCapabilities siteId={ siteId } />
				<QueryRewindState siteId={ siteId } />
				{ ! isAtomic && <QueryJetpackCredentialsStatus siteId={ siteId } role="main" /> }
				<div className="activity-card-list">
					{ this.renderFilterbar() }
					{ isLoading ? this.renderLoading() : this.renderData() }
				</div>
			</>
		);
	}
}

const mapStateToProps = ( state ) => {
	const siteId = getSelectedSiteId( state );
	const siteSlug = getSelectedSiteSlug( state );

	const filter = getActivityLogFilter( state, siteId );
	const userLocale = getCurrentUserLocale( state );
	const visibleDays = getActivityLogVisibleDays( state, siteId );

	const rewindPoliciesRequestStatus = getRewindPoliciesRequestStatus( state, siteId );

	const isAtomic = isSiteAutomatedTransfer( state, siteId );
	const isWPCOMSite = getIsSiteWPCOM( state, siteId );
	const requestingSiteFeatures = isRequestingSiteFeatures( state, siteId );
	const siteHasFullActivityLog =
		siteId && siteHasFeature( state, siteId, WPCOM_FEATURES_FULL_ACTIVITY_LOG );

	return {
		filter,
		requestingRewindPolicies: rewindPoliciesRequestStatus === 'pending',
		rewindPoliciesRequestError: rewindPoliciesRequestStatus === 'failure',
		visibleDays,
		siteId,
		siteSlug,
		userLocale,
		isAtomic,
		isWPCOMSite,
		isRequestingSiteFeatures: requestingSiteFeatures,
		siteHasFullActivityLog,
	};
};

const mapDispatchToProps = {
	selectPage: ( siteId, pageNumber ) => updateFilter( siteId, { page: pageNumber } ),
};

/** @type {typeof ActivityCardList} */
const connectedComponent = connect(
	mapStateToProps,
	mapDispatchToProps
)(
	withMobileBreakpoint( withApplySiteOffset( withLocalizedMoment( localize( ActivityCardList ) ) ) )
);

export default connectedComponent;