Rocket.Chat/client/components/avatar/RoomAvatarEditor.js

import React, { useEffect } from 'react';
import { Box, Button, ButtonGroup, Icon } from '@rocket.chat/fuselage';
import { css } from '@rocket.chat/css-in-js';
import { useMutableCallback } from '@rocket.chat/fuselage-hooks';

import RoomAvatar from './RoomAvatar';
import { useFileInput } from '../../hooks/useFileInput';
import { useTranslation } from '../../contexts/TranslationContext';
import { getAvatarURL } from '../../../app/utils/lib/getAvatarURL';

const RoomAvatarEditor = ({ room, roomAvatar, onChangeAvatar = () => {}, ...props }) => {
	const t = useTranslation();

	const handleChangeAvatar = useMutableCallback((file) => {
		const reader = new FileReader();
		reader.readAsDataURL(file);
		reader.onloadend = () => {
			onChangeAvatar(reader.result);
		};
	});

	const [clickUpload, reset] = useFileInput(handleChangeAvatar);
	const clickReset = useMutableCallback(() => {
		reset();
		onChangeAvatar(null);
	});

	useEffect(() => {
		!roomAvatar && reset();
	}, [roomAvatar, reset]);

	const defaultUrl = room.prid ? getAvatarURL({ roomId: room.prid }) : getAvatarURL({ username: `@${ room.name }` }); // Discussions inherit avatars from the parent room

	return <Box borderRadius='x2' maxWidth='x332' w='full' position='relative' {...props}>
		<RoomAvatar { ...roomAvatar !== undefined && { url: roomAvatar === null ? defaultUrl : roomAvatar } } room={room} size='x332' />
		<Box className={[css`bottom: 0; right: 0;`]} position='absolute' m='x12'>
			<ButtonGroup>
				<Button small title={t('Upload_user_avatar')} onClick={clickUpload}>
					<Icon name='upload' size='x16' />
					{t('Upload')}
				</Button>

				<Button primary small danger title={t('Accounts_SetDefaultAvatar')} disabled={roomAvatar === null } onClick={clickReset}>
					<Icon name='trash' size='x16' />
				</Button>
			</ButtonGroup>
		</Box>
	</Box>;
};

export default RoomAvatarEditor;