/**
 * External dependencies
 */
import { __ } from '@wordpress/i18n';
import { Component, Fragment } from '@wordpress/element';
import { compose } from '@wordpress/compose';
import { withDispatch } from '@wordpress/data';
import moment from 'moment';
import { find } from 'lodash';

/**
 * WooCommerce dependencies
 */
import {
	getCurrentDates,
	appendTimestamp,
	getDateParamsFromQuery,
} from 'lib/date';
import { getNewPath, getPersistedQuery } from '@woocommerce/navigation';
import { calculateDelta, formatValue } from 'lib/number-format';
import { formatCurrency } from 'lib/currency-format';
import { getSetting } from '@woocommerce/wc-admin-settings';
import { SETTINGS_STORE_NAME } from '@woocommerce/data';

/**
 * Internal dependencies
 */
import {
	EllipsisMenu,
	MenuItem,
	MenuTitle,
	SectionHeader,
	SummaryList,
	SummaryListPlaceholder,
	SummaryNumber,
} from '@woocommerce/components';
import withSelect from 'wc-api/with-select';
import './style.scss';
import { recordEvent } from 'lib/tracks';

const { performanceIndicators: indicators } = getSetting( 'dataEndpoints', {
	performanceIndicators: '',
} );

class StorePerformance extends Component {
	renderMenu() {
		const {
			hiddenBlocks,
			isFirst,
			isLast,
			onMove,
			onRemove,
			onTitleBlur,
			onTitleChange,
			onToggleHiddenBlock,
			titleInput,
			controls: Controls,
		} = this.props;

		return (
			<EllipsisMenu
				label={ __(
					'Choose which analytics to display and the section name',
					'woocommerce-admin'
				) }
				renderContent={ ( { onToggle } ) => (
					<Fragment>
						<MenuTitle>
							{ __( 'Display Stats:', 'woocommerce-admin' ) }
						</MenuTitle>
						{ indicators.map( ( indicator, i ) => {
							const checked = ! hiddenBlocks.includes(
								indicator.stat
							);
							return (
								<MenuItem
									checked={ checked }
									isCheckbox
									isClickable
									key={ i }
									onInvoke={ () => {
										onToggleHiddenBlock( indicator.stat )();
										recordEvent( 'dash_indicators_toggle', {
											status: checked ? 'off' : 'on',
											key: indicator.stat,
										} );
									} }
								>
									{ indicator.label }
								</MenuItem>
							);
						} ) }
						{ window.wcAdminFeatures[
							'analytics-dashboard/customizable'
						] && (
							<Controls
								onToggle={ onToggle }
								onMove={ onMove }
								onRemove={ onRemove }
								isFirst={ isFirst }
								isLast={ isLast }
								onTitleBlur={ onTitleBlur }
								onTitleChange={ onTitleChange }
								titleInput={ titleInput }
							/>
						) }
					</Fragment>
				) }
			/>
		);
	}

	renderList() {
		const {
			query,
			primaryRequesting,
			secondaryRequesting,
			primaryError,
			secondaryError,
			primaryData,
			secondaryData,
			userIndicators,
			defaultDateRange,
		} = this.props;
		if ( primaryRequesting || secondaryRequesting ) {
			return (
				<SummaryListPlaceholder
					numberOfItems={ userIndicators.length }
				/>
			);
		}

		if ( primaryError || secondaryError ) {
			return null;
		}

		const persistedQuery = getPersistedQuery( query );

		const { compare } = getDateParamsFromQuery( query, defaultDateRange );
		const prevLabel =
			compare === 'previous_period'
				? __( 'Previous Period:', 'woocommerce-admin' )
				: __( 'Previous Year:', 'woocommerce-admin' );
		return (
			<SummaryList>
				{ () =>
					userIndicators.map( ( indicator, i ) => {
						const primaryItem = find(
							primaryData.data,
							( data ) => data.stat === indicator.stat
						);
						const secondaryItem = find(
							secondaryData.data,
							( data ) => data.stat === indicator.stat
						);

						if ( ! primaryItem || ! secondaryItem ) {
							return null;
						}

						const href =
							( primaryItem._links &&
								primaryItem._links.report[ 0 ] &&
								primaryItem._links.report[ 0 ].href ) ||
							'';
						const reportUrl =
							( href &&
								getNewPath( persistedQuery, href, {
									chart: primaryItem.chart,
								} ) ) ||
							'';
						const isCurrency = primaryItem.format === 'currency';

						const delta = calculateDelta(
							primaryItem.value,
							secondaryItem.value
						);
						const primaryValue = isCurrency
							? formatCurrency( primaryItem.value )
							: formatValue(
									primaryItem.format,
									primaryItem.value
							  );
						const secondaryValue = isCurrency
							? formatCurrency( secondaryItem.value )
							: formatValue(
									secondaryItem.format,
									secondaryItem.value
							  );

						return (
							<SummaryNumber
								key={ i }
								href={ reportUrl }
								label={ indicator.label }
								value={ primaryValue }
								prevLabel={ prevLabel }
								prevValue={ secondaryValue }
								delta={ delta }
								onLinkClickCallback={ () => {
									recordEvent( 'dash_indicators_click', {
										key: indicator.stat,
									} );
								} }
							/>
						);
					} )
				}
			</SummaryList>
		);
	}

	render() {
		const { userIndicators, title } = this.props;
		return (
			<Fragment>
				<SectionHeader
					title={
						title || __( 'Store Performance', 'woocommerce-admin' )
					}
					menu={ this.renderMenu() }
				/>
				{ userIndicators.length > 0 && (
					<div className="woocommerce-dashboard__store-performance">
						{ this.renderList() }
					</div>
				) }
			</Fragment>
		);
	}
}
export default compose(
	withSelect( ( select, props ) => {
		const { hiddenBlocks, query } = props;
		const {
			getReportItems,
			getReportItemsError,
			isReportItemsRequesting,
		} = select( 'wc-api' );
		const { woocommerce_default_date_range: defaultDateRange } = select(
			SETTINGS_STORE_NAME
		).getSetting( 'wc_admin', 'wcAdminSettings' );

		const datesFromQuery = getCurrentDates( query, defaultDateRange );
		const endPrimary = datesFromQuery.primary.before;
		const endSecondary = datesFromQuery.secondary.before;
		const userIndicators = indicators.filter(
			( indicator ) => ! hiddenBlocks.includes( indicator.stat )
		);
		const statKeys = userIndicators
			.map( ( indicator ) => indicator.stat )
			.join( ',' );

		if ( statKeys.length === 0 ) {
			return {
				hiddenBlocks,
				userIndicators,
				indicators,
				defaultDateRange,
			};
		}

		const primaryQuery = {
			after: appendTimestamp( datesFromQuery.primary.after, 'start' ),
			before: appendTimestamp(
				endPrimary,
				endPrimary.isSame( moment(), 'day' ) ? 'now' : 'end'
			),
			stats: statKeys,
		};

		const secondaryQuery = {
			after: appendTimestamp( datesFromQuery.secondary.after, 'start' ),
			before: appendTimestamp(
				endSecondary,
				endSecondary.isSame( moment(), 'day' ) ? 'now' : 'end'
			),
			stats: statKeys,
		};

		const primaryData = getReportItems(
			'performance-indicators',
			primaryQuery
		);
		const primaryError =
			getReportItemsError( 'performance-indicators', primaryQuery ) ||
			null;
		const primaryRequesting = isReportItemsRequesting(
			'performance-indicators',
			primaryQuery
		);

		const secondaryData = getReportItems(
			'performance-indicators',
			secondaryQuery
		);
		const secondaryError =
			getReportItemsError( 'performance-indicators', secondaryQuery ) ||
			null;
		const secondaryRequesting = isReportItemsRequesting(
			'performance-indicators',
			secondaryQuery
		);

		return {
			hiddenBlocks,
			userIndicators,
			indicators,
			primaryData,
			primaryError,
			primaryRequesting,
			secondaryData,
			secondaryError,
			secondaryRequesting,
			defaultDateRange,
		};
	} ),
	withDispatch( ( dispatch ) => {
		const { updateCurrentUserData } = dispatch( 'wc-api' );

		return {
			updateCurrentUserData,
		};
	} )
)( StorePerformance );