import {
	Button,
	Count,
	Gridicon,
	Popover,
	SegmentedControl,
	FormLabel,
} from '@automattic/components';
import { localize } from 'i18n-calypso';
import { get, includes, isEqual, map } from 'lodash';
import { createRef, Component } from 'react';
import { connect } from 'react-redux';
import ButtonGroup from 'calypso/components/button-group';
import FormCheckbox from 'calypso/components/forms/form-checkbox';
import FormFieldset from 'calypso/components/forms/form-fieldset';
import Search from 'calypso/components/search';
import SectionNav from 'calypso/components/section-nav';
import NavItem from 'calypso/components/section-nav/item';
import NavTabs from 'calypso/components/section-nav/tabs';
import UrlSearch from 'calypso/lib/url-search';
import {
	bumpStat,
	composeAnalytics,
	recordTracksEvent,
	withAnalytics,
} from 'calypso/state/analytics/actions';
import {
	changeCommentStatus,
	deleteComment,
	emptyComments,
	requestCommentsList,
	unlikeComment,
} from 'calypso/state/comments/actions';
import { getSiteComment } from 'calypso/state/comments/selectors';
import { removeNotice, successNotice } from 'calypso/state/notices/actions';
import hasPendingCommentRequests from 'calypso/state/selectors/has-pending-comment-requests';
import { NEWEST_FIRST, OLDEST_FIRST } from '../constants';
import CommentNavigationTab from './comment-navigation-tab';

const bulkActions = {
	unapproved: [ 'approve', 'spam', 'trash' ],
	approved: [ 'unapprove', 'spam', 'trash' ],
	spam: [ 'approve', 'delete' ],
	trash: [ 'approve', 'spam', 'delete' ],
	all: [ 'approve', 'unapprove', 'spam', 'trash' ],
};

export class CommentNavigation extends Component {
	static defaultProps = {
		isSelectedAll: false,
		selectedComments: [],
		status: 'unapproved',
		order: NEWEST_FIRST,
	};

	state = {
		showPopover: false,
	};

	shouldComponentUpdate = ( nextProps, nextState ) =>
		! isEqual( this.props, nextProps ) || ! isEqual( this.state, nextState );

	componentDidUpdate = ( prevProps ) => {
		const { commentsListQuery, hasPendingBulkAction, refreshPage } = this.props;
		if ( commentsListQuery && ! hasPendingBulkAction && prevProps.hasPendingBulkAction ) {
			refreshPage( commentsListQuery );
		}
	};

	bulkDeletePermanently = () => {
		const { translate } = this.props;
		if (
			typeof window === 'undefined' ||
			window.confirm( translate( 'Delete these comments permanently?' ) )
		) {
			this.setBulkStatus( 'delete' )();
		}
	};

	emptyPermanently = () => {
		const { status, translate } = this.props;
		if (
			window.confirm(
				status === 'spam'
					? translate( 'Empty all spam permanently?' )
					: translate( 'Empty all trash permanently?' )
			)
		) {
			this.props.emptyPermanently( status );
		}
	};

	changeFilter = ( status ) => () => this.props.recordChangeFilter( status );

	getNavItems = () => {
		const { translate, counts } = this.props;
		const navItems = {
			all: {
				label: translate( 'All' ),
				count: get( counts, 'all' ),
			},
			unapproved: {
				label: translate( 'Pending' ),
				count: get( counts, 'pending' ),
			},
			approved: {
				label: translate( 'Approved' ),
				count: get( counts, 'approved' ),
			},
			spam: {
				label: translate( 'Spam' ),
				count: get( counts, 'spam' ),
			},
			trash: {
				label: translate( 'Trash' ),
				count: get( counts, 'trash' ),
			},
		};

		return navItems;
	};

	getStatusPath = ( status ) => {
		const { postId } = this.props;

		const appendPostId = postId ? `/${ postId }` : '';

		return 'unapproved' !== status
			? `/comments/${ status }/${ this.props.siteFragment }${ appendPostId }`
			: `/comments/pending/${ this.props.siteFragment }${ appendPostId }`;
	};

	setBulkStatus = ( newStatus ) => () => {
		const {
			changeStatus,
			deletePermanently,
			postId: isPostView,
			recordBulkAction,
			selectedComments,
			status: queryStatus,
			toggleBulkMode,
			unlike,
		} = this.props;
		this.props.removeNotice( 'comment-notice' );
		selectedComments.forEach( ( { commentId, isLiked, postId, status } ) => {
			if ( 'delete' === newStatus ) {
				deletePermanently( postId, commentId );
				return;
			}
			const alsoUnlike = isLiked && 'approved' !== status;
			changeStatus( postId, commentId, newStatus, { alsoUnlike, previousStatus: status } );
			if ( alsoUnlike ) {
				unlike( postId, commentId );
			}
		} );

		recordBulkAction(
			newStatus,
			selectedComments.length,
			queryStatus,
			isPostView ? 'post' : 'site'
		);
		this.showBulkNotice( newStatus );
		toggleBulkMode();
	};

	showBulkNotice = ( newStatus ) => {
		const { translate } = this.props;

		const message = get(
			{
				approved: translate( 'All selected comments approved.' ),
				unapproved: translate( 'All selected comments unapproved.' ),
				spam: translate( 'All selected comments marked as spam.' ),
				trash: translate( 'All selected comments moved to trash.' ),
				delete: translate( 'All selected comments deleted permanently.' ),
			},
			newStatus
		);

		if ( ! message ) {
			return;
		}

		const noticeOptions = {
			id: 'comment-notice',
			isPersistent: true,
		};

		this.props.successNotice( message, noticeOptions );
	};

	statusHasAction = ( action ) => includes( bulkActions[ this.props.status ], action );

	toggleSelectAll = () => {
		if ( this.props.isSelectedAll ) {
			return this.props.toggleSelectAll( [] );
		}

		return this.props.toggleSelectAll( this.props.visibleComments );
	};

	popoverButtonRef = createRef();

	showPopover = () => {
		this.setState( { showPopover: true } );
	};

	closePopover = () => {
		this.setState( { showPopover: false } );
	};

	render() {
		const {
			doSearch,
			filterUnreplied,
			hasSearch,
			hasComments,
			isBulkMode,
			isPostView,
			isSelectedAll,
			query,
			selectedComments,
			setFilterUnreplied,
			setOrder,
			order,
			status: queryStatus,
			toggleBulkMode,
			translate,
		} = this.props;

		const navItems = this.getNavItems();
		const selectedCount = selectedComments.length;

		if ( isBulkMode ) {
			return (
				<SectionNav className="comment-navigation is-bulk-edit">
					<CommentNavigationTab className="comment-navigation__bulk-count">
						<FormCheckbox checked={ isSelectedAll } onChange={ this.toggleSelectAll } />
						<Count count={ selectedCount } />
					</CommentNavigationTab>
					<CommentNavigationTab className="comment-navigation__actions">
						<ButtonGroup>
							{ this.statusHasAction( 'approve' ) && (
								<Button
									compact
									disabled={ ! selectedCount }
									onClick={ this.setBulkStatus( 'approved' ) }
								>
									{ translate( 'Approve' ) }
								</Button>
							) }
							{ this.statusHasAction( 'unapprove' ) && (
								<Button
									compact
									disabled={ ! selectedCount }
									onClick={ this.setBulkStatus( 'unapproved' ) }
								>
									{ translate( 'Unapprove' ) }
								</Button>
							) }
						</ButtonGroup>
						<ButtonGroup>
							{ this.statusHasAction( 'spam' ) && (
								<Button
									compact
									scary
									disabled={ ! selectedCount }
									onClick={ this.setBulkStatus( 'spam' ) }
								>
									{ translate( 'Spam' ) }
								</Button>
							) }
							{ this.statusHasAction( 'trash' ) && (
								<Button
									compact
									scary
									disabled={ ! selectedCount }
									onClick={ this.setBulkStatus( 'trash' ) }
								>
									{ translate( 'Trash' ) }
								</Button>
							) }
							{ this.statusHasAction( 'delete' ) && (
								<Button
									compact
									scary
									disabled={ ! selectedCount }
									onClick={ this.bulkDeletePermanently }
								>
									{ translate( 'Delete' ) }
								</Button>
							) }
						</ButtonGroup>
					</CommentNavigationTab>
					<CommentNavigationTab className="comment-navigation__close-bulk">
						<Button borderless onClick={ toggleBulkMode } tabIndex="0">
							<Gridicon icon="cross" />
						</Button>
					</CommentNavigationTab>
				</SectionNav>
			);
		}

		return (
			<SectionNav className="comment-navigation" selectedText={ navItems[ queryStatus ].label }>
				<NavTabs selectedText={ navItems[ queryStatus ].label }>
					{ map( navItems, ( { label, count }, status ) => (
						<NavItem
							key={ status }
							count={ count }
							compactCount
							onClick={ this.changeFilter( status ) }
							path={ this.getStatusPath( status ) }
							selected={ queryStatus === status }
						>
							{ label }
						</NavItem>
					) ) }
				</NavTabs>

				<CommentNavigationTab className="comment-navigation__actions comment-navigation__open-bulk">
					{ hasComments && (
						<SegmentedControl compact className="comment-navigation__sort-buttons">
							<SegmentedControl.Item
								onClick={ setOrder( NEWEST_FIRST ) }
								selected={ order === NEWEST_FIRST }
							>
								{ translate( 'Newest', {
									comment: 'Chronological order for sorting the comments list.',
								} ) }
							</SegmentedControl.Item>
							<SegmentedControl.Item
								onClick={ setOrder( OLDEST_FIRST ) }
								selected={ order === OLDEST_FIRST }
							>
								{ translate( 'Oldest', {
									comment: 'Chronological order for sorting the comments list.',
								} ) }
							</SegmentedControl.Item>
						</SegmentedControl>
					) }

					{ hasComments && (
						<>
							<Button compact onClick={ toggleBulkMode }>
								{ translate( 'Bulk edit' ) }
							</Button>

							{ this.statusHasAction( 'delete' ) && ! isPostView && (
								<Button
									compact
									scary
									onClick={ this.emptyPermanently }
									className="comment-navigation__button-empty"
								>
									{ this.props.status === 'spam'
										? translate( 'Empty spam' )
										: translate( 'Empty trash' ) }
								</Button>
							) }
						</>
					) }

					{ hasComments && (
						<>
							<Button
								title={ translate( 'Settings' ) }
								compact
								borderless
								onClick={ this.showPopover }
								ref={ this.popoverButtonRef }
								aria-haspopup
							>
								<Gridicon icon="cog" />
							</Button>
							<Popover
								onClose={ this.closePopover }
								context={ this.popoverButtonRef.current }
								isVisible={ this.state.showPopover }
								position="top left"
							>
								<FormFieldset className="comment-navigation__unreplied-comments">
									<FormLabel>
										<FormCheckbox
											checked={ filterUnreplied }
											onChange={ setFilterUnreplied( ! filterUnreplied ) }
										/>
										<span>{ translate( 'Collapse replied comments' ) }</span>
									</FormLabel>
								</FormFieldset>
							</Popover>
						</>
					) }
				</CommentNavigationTab>

				{ hasSearch && (
					<Search delaySearch fitsContainer initialValue={ query } onSearch={ doSearch } pinned />
				) }
			</SectionNav>
		);
	}
}

const mapStateToProps = ( state, { commentsPage, siteId } ) => {
	// eslint-disable-next-line wpcalypso/redux-no-bound-selectors
	const visibleComments = map( commentsPage, ( commentId ) => {
		const comment = getSiteComment( state, siteId, commentId );
		if ( comment ) {
			return {
				commentId,
				isLiked: get( comment, 'i_like' ),
				postId: get( comment, 'post.ID' ),
				status: get( comment, 'status' ),
			};
		}
	} );

	return {
		visibleComments,
		hasComments: visibleComments.length > 0,
		hasPendingBulkAction: hasPendingCommentRequests( state ),
	};
};

const mapDispatchToProps = ( dispatch, { siteId, commentsListQuery } ) => ( {
	changeStatus: ( postId, commentId, status, analytics = { alsoUnlike: false } ) =>
		dispatch(
			withAnalytics(
				composeAnalytics(
					recordTracksEvent( 'calypso_comment_management_change_status', {
						also_unlike: analytics.alsoUnlike,
						previous_status: analytics.previousStatus,
						status,
					} ),
					bumpStat( 'calypso_comment_management', 'comment_status_changed_to_' + status )
				),
				changeCommentStatus( siteId, postId, commentId, status, commentsListQuery )
			)
		),
	deletePermanently: ( postId, commentId ) =>
		dispatch(
			withAnalytics(
				composeAnalytics(
					recordTracksEvent( 'calypso_comment_management_delete' ),
					bumpStat( 'calypso_comment_management', 'comment_deleted' )
				),
				deleteComment( siteId, postId, commentId, { showSuccessNotice: true }, commentsListQuery )
			)
		),
	// Empty all comments (from spam or trash only)
	emptyPermanently: ( status ) =>
		dispatch(
			withAnalytics(
				composeAnalytics(
					recordTracksEvent( 'calypso_comment_management_empty' ),
					bumpStat( 'calypso_comment_management', 'comments_emptied' )
				),
				emptyComments( siteId, status, { showSuccessNotice: true }, commentsListQuery )
			)
		),
	recordBulkAction: ( action, count, fromList, view = 'site' ) =>
		dispatch(
			composeAnalytics(
				recordTracksEvent( 'calypso_comment_management_bulk_action', {
					action,
					count,
					from_list: fromList,
					view,
				} ),
				bumpStat( 'calypso_comment_management', 'bulk_action' )
			)
		),
	recordChangeFilter: ( status ) =>
		dispatch(
			composeAnalytics(
				recordTracksEvent( 'calypso_comment_management_change_filter', { status } ),
				bumpStat( 'calypso_comment_management', 'change_filter_to_' + status )
			)
		),
	removeNotice: ( noticeId ) => dispatch( removeNotice( noticeId ) ),
	refreshPage: ( query ) => dispatch( requestCommentsList( query ) ),
	successNotice: ( text, options ) => dispatch( successNotice( text, options ) ),
	unlike: ( postId, commentId ) =>
		dispatch(
			withAnalytics(
				composeAnalytics(
					recordTracksEvent( 'calypso_comment_management_unlike' ),
					bumpStat( 'calypso_comment_management', 'comment_unliked' )
				),
				unlikeComment( siteId, postId, commentId )
			)
		),
} );

export default connect(
	mapStateToProps,
	mapDispatchToProps
)( localize( UrlSearch( CommentNavigation ) ) );