/* eslint-disable wpcalypso/jsx-gridicon-size */
import { Card, FormLabel } from '@automattic/components';
import { useHasEnTranslation } from '@automattic/i18n-utils';
import styled from '@emotion/styled';
import { useTranslate, localize } from 'i18n-calypso';
import { useEffect, useState } from 'react';
import { useDispatch } from 'react-redux';
import FormFieldset from 'calypso/components/forms/form-fieldset';
import FormRadio from 'calypso/components/forms/form-radio';
import FormSettingExplanation from 'calypso/components/forms/form-setting-explanation';
import InfoPopover from 'calypso/components/info-popover';
import InlineSupportLink from 'calypso/components/inline-support-link';
import SettingsSectionHeader from 'calypso/my-sites/site-settings/settings-section-header';
import { useSelector } from 'calypso/state';
import { recordTracksEvent, recordGoogleEvent } from 'calypso/state/analytics/actions';
import {
	errorNotice,
	infoNotice,
	removeNotice,
	successNotice,
} from 'calypso/state/notices/actions';
import { getSiteOption } from 'calypso/state/sites/selectors';
import { useSiteInterfaceMutation } from './use-select-interface-mutation';
import './style.scss';

const changeLoadingNoticeId = 'admin-interface-change-loading';
const successNoticeId = 'admin-interface-change-success';
const failureNoticeId = 'admin-interface-change-failure';

const FormRadioStyled = styled( FormRadio )( {
	'&.form-radio:disabled:checked::before': {
		backgroundColor: 'var(--color-primary)',
		opacity: 0.6,
	},
} );

const SiteAdminInterface = ( { siteId, isHosting = false } ) => {
	const translate = useTranslate();
	const hasEnTranslation = useHasEnTranslation();
	const dispatch = useDispatch();
	const removeAllNotices = () => {
		dispatch( removeNotice( successNoticeId ) );
		dispatch( removeNotice( failureNoticeId ) );
		dispatch( removeNotice( changeLoadingNoticeId ) );
	};

	const adminInterface = useSelector(
		( state ) => getSiteOption( state, siteId, 'wpcom_admin_interface' ) || 'calypso'
	);

	const { setSiteInterface, isLoading: isUpdating } = useSiteInterfaceMutation( siteId, {
		onMutate: () => {
			removeAllNotices();
			dispatch(
				infoNotice( translate( 'Changing admin interface style…' ), {
					id: changeLoadingNoticeId,
					showDismiss: false,
					isLoading: true,
					icon: 'sync',
				} )
			);
		},
		onSuccess() {
			dispatch( removeNotice( changeLoadingNoticeId ) );
			dispatch(
				successNotice( translate( 'Admin interface style changed.' ), {
					id: successNoticeId,
				} )
			);
		},
		onError: () => {
			dispatch( removeNotice( changeLoadingNoticeId ) );
			dispatch(
				errorNotice( translate( 'Failed to change admin interface style.' ), {
					id: failureNoticeId,
				} )
			);
		},
	} );

	const [ selectedAdminInterface, setSelectedAdminInterface ] = useState( adminInterface );

	// When switching from Classic to Default, adminInterface will initially reflect the cached state 'wp-admin'.
	// It will then be updated to 'calypso', so we need to sync the change to selectedAdminInterface.
	useEffect( () => {
		setSelectedAdminInterface( adminInterface );
	}, [ adminInterface ] );

	const handleSubmitForm = ( value ) => {
		if ( isHosting ) {
			dispatch(
				recordTracksEvent( 'calypso_hosting_configuration_admin_interface_change', {
					interface: value,
				} )
			);
		} else {
			dispatch(
				recordTracksEvent( 'calypso_site_settings_admin_interface_updated', {
					interface: value,
				} )
			);
		}

		setSiteInterface( value );
	};

	const handleInputChange = async ( value ) => {
		setSelectedAdminInterface( value );
		if ( isHosting ) {
			handleSubmitForm( value );
		} else {
			dispatch( recordGoogleEvent( 'Site Settings', `Set wpcom_admin_interface to ${ value }` ) );
		}
	};

	const renderForm = () => {
		return (
			<>
				<FormFieldset>
					<FormLabel>
						<FormRadioStyled
							label={ translate( 'Classic style' ) }
							name="wpcom_admin_interface"
							value="wp-admin"
							checked={ selectedAdminInterface === 'wp-admin' }
							onChange={ ( event ) => handleInputChange( event.target.value ) }
							disabled={ isUpdating }
						/>
					</FormLabel>
					<FormSettingExplanation>
						{ translate( 'Use WP-Admin to manage your site.' ) }
					</FormSettingExplanation>
				</FormFieldset>
				<FormFieldset>
					<FormLabel>
						<FormRadioStyled
							label={ translate( 'Default style' ) }
							name="wpcom_admin_interface"
							value="calypso"
							checked={ selectedAdminInterface === 'calypso' }
							onChange={ ( event ) => handleInputChange( event.target.value ) }
							disabled={ isUpdating }
						/>
					</FormLabel>
					<FormSettingExplanation>
						{ hasEnTranslation( 'Use WordPress.com’s native dashboard to manage your site.' )
							? translate( 'Use WordPress.com’s native dashboard to manage your site.' )
							: translate( 'Use WordPress.com’s legacy dashboard to manage your site.' ) }
					</FormSettingExplanation>
				</FormFieldset>
			</>
		);
	};

	return (
		<>
			<SettingsSectionHeader
				id="admin-interface-style"
				disabled={ isUpdating }
				isSaving={ isUpdating }
				onButtonClick={ () => handleSubmitForm( selectedAdminInterface ) }
				showButton
				title={ translate(
					'Admin interface style {{infoPopover}} Set the admin interface style for all users. {{supportLink}}Learn more{{/supportLink}}. {{/infoPopover}}',
					{
						components: {
							supportLink: (
								<InlineSupportLink supportContext="admin-interface-style" showIcon={ false } />
							),
							infoPopover: <InfoPopover position="bottom right" />,
						},
						comment: 'The header of the Admin interface style setting',
					}
				) }
			/>
			<Card>{ renderForm() }</Card>
		</>
	);
};

export default localize( SiteAdminInterface );