/**
 * External dependencies
 */
import classnames from 'classnames';
import { omit, noop } from 'lodash';
import { useTransition, animated } from 'react-spring/web.cjs';
import { useReducedMotion } from '@wordpress/compose';
import { useState } from '@wordpress/element';

/**
 * Internal dependencies
 */
import Snackbar from './';

/**
 * Renders a list of notices.
 *
 * @param  {Object}   $0           Props passed to the component.
 * @param  {Array}    $0.notices   Array of notices to render.
 * @param  {Function} $0.onRemove  Function called when a notice should be removed / dismissed.
 * @param  {Object}   $0.className Name of the class used by the component.
 * @param  {Object}   $0.children  Array of children to be rendered inside the notice list.
 * @return {Object}                The rendered notices list.
 */
function SnackbarList( { notices, className, children, onRemove = noop } ) {
	const isReducedMotion = useReducedMotion();
	const [ refMap ] = useState( () => new WeakMap() );
	const transitions = useTransition( notices, ( notice ) => notice.id, {
		from: { opacity: 0, height: 0 },
		enter: ( item ) => async ( next ) =>
			await next( {
				opacity: 1,
				height: refMap.get( item ).offsetHeight,
			} ),
		leave: () => async ( next ) => {
			await next( { opacity: 0 } );
			await next( { height: 0 } );
		},
		immediate: isReducedMotion,
	} );

	className = classnames( 'components-snackbar-list', className );
	const removeNotice = ( notice ) => () => onRemove( notice.id );

	return (
		<div className={ className }>
			{ children }
			{ transitions.map( ( { item: notice, key, props: style } ) => (
				<animated.div key={ key } style={ style }>
					<div
						className="components-snackbar-list__notice-container"
						ref={ ( ref ) => ref && refMap.set( notice, ref ) }
					>
						<Snackbar
							{ ...omit( notice, [ 'content' ] ) }
							onRemove={ removeNotice( notice ) }
						>
							{ notice.content }
						</Snackbar>
					</div>
				</animated.div>
			) ) }
		</div>
	);
}

export default SnackbarList;