verdnatura-chat/app/containers/Avatar.js

import React from 'react';
import PropTypes from 'prop-types';
import { connect } from 'react-redux';
import { StyleSheet, Text, View, ViewPropTypes } from 'react-native';
import { CachedImage } from 'react-native-img-cache';
import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
import avatarInitialsAndColor from '../utils/avatarInitialsAndColor';

const styles = StyleSheet.create({
	iconContainer: {
		overflow: 'hidden',
		justifyContent: 'center',
		alignItems: 'center'
	},
	avatar: {
		position: 'absolute'
	},
	avatarInitials: {
		color: '#ffffff'
	}
});

@connect(state => ({
	baseUrl: state.settings.Site_Url || state.server ? state.server.server : ''
}))
export default class Avatar extends React.PureComponent {
	static propTypes = {
		style: ViewPropTypes.style,
		baseUrl: PropTypes.string,
		text: PropTypes.string.isRequired,
		avatar: PropTypes.string,
		size: PropTypes.number,
		borderRadius: PropTypes.number,
		type: PropTypes.string
	};
	render() {
		const {
			text = '', size = 25, baseUrl, borderRadius = 4, style, avatar, type = 'd'
		} = this.props;
		const { initials, color } = avatarInitialsAndColor(`${ text }`);

		const iconContainerStyle = {
			backgroundColor: color,
			width: size,
			height: size,
			borderRadius
		};

		const avatarInitialsStyle = {
			fontSize: size / 2
		};

		const avatarStyle = {
			width: size,
			height: size,
			borderRadius
		};

		if (type === 'd') {
			const uri = avatar || `${ baseUrl }/avatar/${ text }`;
			const image = (avatar || baseUrl) && (
				<CachedImage
					style={[styles.avatar, avatarStyle]}
					source={{ uri }}
				/>
			);
			return (
				<View style={[styles.iconContainer, iconContainerStyle, style]}>
					<Text style={[styles.avatarInitials, avatarInitialsStyle]} allowFontScaling={false}>{initials}</Text>
					{image}
				</View>);
		}

		const icon = {
			c: 'pound',
			p: 'lock',
			l: 'account'
		}[type];

		return (
			<View style={[styles.iconContainer, iconContainerStyle, style]}>
				<MaterialCommunityIcons name={icon} style={[styles.avatarInitials, avatarInitialsStyle]} />
			</View>
		);
	}
}