Mention autocomplete (#150)

* Mentions working

app/containers/MessageBox/AnimatedContainer.js

@@ -0,0 +1,65 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { Animated } from 'react-native';
+
+export default class MessageBox extends React.PureComponent {
+	static propTypes = {
+		subview: PropTypes.object.isRequired,
+		visible: PropTypes.bool.isRequired,
+		messageboxHeight: PropTypes.number.isRequired
+	}
+
+	constructor(props) {
+		super(props);
+		this.animatedBottom = new Animated.Value(0);
+	}
+
+	componentWillReceiveProps(nextProps) {
+		if (this.props.visible === nextProps.visible) {
+			return;
+		}
+		if (nextProps.visible) {
+			return this.show();
+		}
+		this.hide();
+	}
+
+	show() {
+		this.animatedBottom.setValue(0);
+		Animated.timing(this.animatedBottom, {
+			toValue: 1,
+			duration: 300,
+			useNativeDriver: true
+		}).start();
+	}
+
+	hide() {
+		Animated.timing(this.animatedBottom, {
+			toValue: 0,
+			duration: 300,
+			useNativeDriver: true
+		}).start();
+	}
+
+	render() {
+		const bottom = this.animatedBottom.interpolate({
+			inputRange: [0, 1],
+			outputRange: [0, -this.props.messageboxHeight - 200]
+		});
+
+		return (
+			<Animated.View
+				style={{
+					position: 'absolute',
+					left: 0,
+					right: 0,
+					bottom: -200,
+					zIndex: 1,
+					transform: [{ translateY: bottom }]
+				}}
+			>
+				{this.props.subview}
+			</Animated.View>
+		);
+	}
+}

app/containers/MessageBox/index.js

@@ -1,6 +1,6 @@
 import React from 'react';
 import PropTypes from 'prop-types';
-import { View, TextInput, SafeAreaView, Platform } from 'react-native';
+import { View, TextInput, SafeAreaView, Platform, FlatList, Text, TouchableOpacity } from 'react-native';
 import Icon from 'react-native-vector-icons/Ionicons';
 import ImagePicker from 'react-native-image-picker';
 import { connect } from 'react-redux';
@@ -9,10 +9,21 @@ import RocketChat from '../../lib/rocketchat';
 import { editRequest, editCancel, clearInput } from '../../actions/messages';
 import styles from './style';
 import MyIcon from '../icons';
+import realm from '../../lib/realm';
+import Avatar from '../Avatar';
+import AnimatedContainer from './AnimatedContainer';
+
+const MENTIONS_TRACKING_TYPE_USERS = '@';
+
+const onlyUnique = function onlyUnique(value, index, self) {
+	return self.indexOf(({ _id }) => value._id === _id) === index;
+};
+
 @connect(state => ({
 	room: state.room,
 	message: state.messages.message,
-	editing: state.messages.editing
+	editing: state.messages.editing,
+	baseUrl: state.settings.Site_Url
 }), dispatch => ({
 	editCancel: () => dispatch(editCancel()),
 	editRequest: message => dispatch(editRequest(message)),
@@ -25,6 +36,7 @@ export default class MessageBox extends React.Component {
 		rid: PropTypes.string.isRequired,
 		editCancel: PropTypes.func.isRequired,
 		editRequest: PropTypes.func.isRequired,
+		baseUrl: PropTypes.string.isRequired,
 		message: PropTypes.object,
 		editing: PropTypes.bool,
 		typing: PropTypes.func,
@@ -35,22 +47,49 @@ export default class MessageBox extends React.Component {
 		super(props);
 		this.state = {
 			height: 20,
-			text: ''
+			messageboxHeight: 0,
+			text: '',
+			mentions: [],
+			showAnimatedContainer: false
 		};
+		this.users = [];
+		this.rooms = [];
 	}
-
 	componentWillReceiveProps(nextProps) {
-		if (this.props.message !== nextProps.message && nextProps.message) {
-			this.component.setNativeProps({ text: nextProps.message.msg });
+		if (this.props.message !== nextProps.message && nextProps.message.msg) {
+			this.setState({ text: nextProps.message.msg });
 			this.component.focus();
 		} else if (!nextProps.message) {
-			this.component.setNativeProps({ text: '' });
+			this.setState({ text: '' });
 		}
 	}
+
+	onChange() {
+		requestAnimationFrame(() => {
+			const { start, end } = this.component._lastNativeSelection;
+
+			const cursor = Math.max(start, end);
+
+			const text = this.component._lastNativeText;
+
+			const regexp = /(#|@)([a-z._-]+)$/im;
+
+			const result = text.substr(0, cursor).match(regexp);
+
+			if (!result) {
+				return this.stopTrackingMention();
+			}
+			const [, lastChar, name] = result;
+
+			this.identifyMentionKeyword(name, lastChar);
+		});
+	}
+
+
 	onChangeText(text) {
 		this.setState({ text });
-		this.props.typing(text.length > 0);
 	}
+
 	get leftButtons() {
 		const { editing } = this.props;
 		if (editing) {
@@ -79,14 +118,14 @@ export default class MessageBox extends React.Component {
 	get rightButtons() {
 		const icons = [];
 
-		if (this.state.text.length) {
+		if (this.state.text) {
 			icons.push(<MyIcon
 				style={[styles.actionButtons, { color: '#1D74F5' }]}
 				name='send'
 				key='sendIcon'
 				accessibilityLabel='Send message'
 				accessibilityTraits='button'
-				onPress={() => this.submit(this.component._lastNativeText)}
+				onPress={() => this.submit(this.state.text)}
 			/>);
 		}
 		icons.push(<MyIcon
@@ -100,12 +139,10 @@ export default class MessageBox extends React.Component {
 		return icons;
 	}
 
-	// get placeholder() {
-	// 	return `New Message`.substring(0, 35);
-	// }
 	updateSize = (height) => {
 		this.setState({ height: height + (Platform.OS === 'ios' ? 0 : 0) });
 	}
+
 	addFile = () => {
 		const options = {
 			customButtons: [{
@@ -133,14 +170,14 @@ export default class MessageBox extends React.Component {
 	}
 	editCancel() {
 		this.props.editCancel();
-		this.component.setNativeProps({ text: '' });
+		this.setState({ text: '' });
 	}
 	openEmoji() {
 		this.setState({ emoji: !this.state.emoji });
 	}
 	submit(message) {
-		this.component.setNativeProps({ text: '' });
 		this.setState({ text: '' });
+		this.stopTrackingMention();
 		requestAnimationFrame(() => {
 			this.props.typing(false);
 			if (message.trim() === '') {
@@ -159,10 +196,163 @@ export default class MessageBox extends React.Component {
 		});
 	}
 
+	async _getUsers(keyword) {
+		this.users = realm.objects('users');
+		if (keyword) {
+			this.users = this.users.filtered('username CONTAINS[c] $0', keyword);
+		}
+		this.setState({ mentions: this.users.slice() });
+
+		const usernames = [];
+
+		if (keyword && this.users.length > 7) {
+			return;
+		}
+
+		this.users.forEach(user => usernames.push(user.username));
+
+		if (this.oldPromise) {
+			this.oldPromise();
+		}
+		try {
+			const results = await Promise.race([
+				RocketChat.spotlight(keyword, usernames, { users: true }),
+				new Promise((resolve, reject) => (this.oldPromise = reject))
+			]);
+			realm.write(() => {
+				results.users.forEach((user) => {
+					user._server = {
+						id: this.props.baseUrl,
+						current: true
+					};
+					realm.create('users', user, true);
+				});
+			});
+		} catch (e) {
+			console.log('spotlight canceled');
+		} finally {
+			delete this.oldPromise;
+			this.users = realm.objects('users').filtered('username CONTAINS[c] $0', keyword);
+			this.setState({ mentions: this.users.slice() });
+		}
+	}
+
+	async _getRooms(keyword = '') {
+		this.roomsCache = this.roomsCache || [];
+		this.rooms = realm.objects('subscriptions')
+			.filtered('_server.id = $0 AND t != $1', this.props.baseUrl, 'd');
+		if (keyword) {
+			this.rooms = this.rooms.filtered('name CONTAINS[c] $0', keyword);
+		}
+
+		const rooms = [];
+		this.rooms.forEach(room => rooms.push(room));
+
+		this.roomsCache.forEach((room) => {
+			if (room.name && room.name.toUpperCase().indexOf(keyword.toUpperCase()) !== -1) {
+				rooms.push(room);
+			}
+		});
+
+		if (rooms.length > 3) {
+			this.setState({ mentions: rooms });
+			return;
+		}
+
+		if (this.oldPromise) {
+			this.oldPromise();
+		}
+
+		try {
+			const results = await Promise.race([
+				RocketChat.spotlight(keyword, [...rooms, ...this.roomsCache].map(r => r.name), { rooms: true }),
+				new Promise((resolve, reject) => (this.oldPromise = reject))
+			]);
+			this.roomsCache = [...this.roomsCache, ...results.rooms].filter(onlyUnique);
+			this.setState({ mentions: [...rooms.slice(), ...results.rooms] });
+		} catch (e) {
+			console.log('spotlight canceled');
+		} finally {
+			delete this.oldPromise;
+		}
+	}
+
+	stopTrackingMention() {
+		this.setState({
+			showAnimatedContainer: false,
+			mentions: []
+		});
+		this.users = [];
+		this.rooms = [];
+	}
+
+	identifyMentionKeyword(keyword, type) {
+		this.updateMentions(keyword, type);
+		this.setState({
+			showAnimatedContainer: true
+		});
+	}
+
+	updateMentions = (keyword, type) => {
+		if (type === MENTIONS_TRACKING_TYPE_USERS) {
+			this._getUsers(keyword);
+		} else {
+			this._getRooms(keyword);
+		}
+	}
+
+	_onPressMention(item) {
+		const msg = this.component._lastNativeText;
+
+		const { start, end } = this.component._lastNativeSelection;
+
+		const cursor = Math.max(start, end);
+
+		const regexp = /([a-z._-]+)$/im;
+
+		const result = msg.substr(0, cursor).replace(regexp, '');
+		const text = `${ result }${ item.username || item.name } ${ msg.slice(cursor) }`;
+		this.component.setNativeProps({ text });
+		this.setState({ text });
+		this.component.focus();
+		requestAnimationFrame(() => this.stopTrackingMention());
+	}
+	renderMentionItem = item => (
+		<TouchableOpacity
+			style={styles.mentionItem}
+			onPress={() => this._onPressMention(item)}
+		>
+			<Avatar
+				style={{ margin: 8 }}
+				text={item.username || item.name}
+				size={30}
+				baseUrl={this.props.baseUrl}
+			/>
+			<Text>{item.username || item.name }</Text>
+		</TouchableOpacity>
+	)
+	renderMentions() {
+		const usersList = (
+			<FlatList
+				style={styles.mentionList}
+				data={this.state.mentions}
+				renderItem={({ item }) => this.renderMentionItem(item)}
+				keyExtractor={item => item._id}
+				keyboardShouldPersistTaps='always'
+				keyboardDismissMode='interactive'
+			/>
+		);
+		const { showAnimatedContainer, messageboxHeight } = this.state;
+		return <AnimatedContainer visible={showAnimatedContainer} subview={usersList} messageboxHeight={messageboxHeight} />;
+	}
 	render() {
 		const { height } = this.state;
 		return (
-			<SafeAreaView style={[styles.textBox, (this.props.editing ? styles.editing : null)]}>
+			<View>
+				<SafeAreaView
+					style={[styles.textBox, (this.props.editing ? styles.editing : null)]}
+					onLayout={event => this.setState({ messageboxHeight: event.nativeEvent.layout.height })}
+				>
 					<View style={styles.textArea}>
 						{this.leftButtons}
 						<TextInput
@@ -172,6 +362,8 @@ export default class MessageBox extends React.Component {
 							blurOnSubmit={false}
 							placeholder='New Message'
 							onChangeText={text => this.onChangeText(text)}
+							onChange={event => this.onChange(event)}
+							value={this.state.text}
 							underlineColorAndroid='transparent'
 							defaultValue=''
 							multiline
@@ -181,6 +373,8 @@ export default class MessageBox extends React.Component {
 						{this.rightButtons}
 					</View>
 				</SafeAreaView>
+				{this.renderMentions()}
+			</View>
 		);
 	}
 }

app/containers/MessageBox/style.js

@@ -1,5 +1,6 @@
 import { StyleSheet } from 'react-native';
 
+const MENTION_HEIGHT = 50;
 
 export default StyleSheet.create({
 	textBox: {
@@ -9,7 +10,8 @@ export default StyleSheet.create({
 		borderTopWidth: 1,
 		borderTopColor: '#D8D8D8',
 		paddingHorizontal: 15,
-		paddingVertical: 15
+		paddingVertical: 15,
+		zIndex: 2
 	},
 	safeAreaView: {
 		flexDirection: 'row',
@@ -62,5 +64,20 @@ export default StyleSheet.create({
 		borderBottomWidth: 1,
 		borderBottomColor: '#ECECEC',
 		color: '#2F343D'
+	},
+	mentionList: {
+		maxHeight: MENTION_HEIGHT * 4,
+		borderTopColor: '#ECECEC',
+		borderTopWidth: 1,
+		paddingHorizontal: 5,
+		backgroundColor: '#fff'
+	},
+	mentionItem: {
+		height: MENTION_HEIGHT,
+		backgroundColor: '#F7F8FA',
+		borderBottomWidth: 1,
+		borderBottomColor: '#ECECEC',
+		flexDirection: 'row',
+		alignItems: 'center'
 	}
 });

app/lib/rocketchat.js

@@ -346,8 +346,8 @@ const RocketChat = {
 		return RocketChat._sendMessageCall(message);
 	},
 
-	spotlight(search, usernames) {
-		return call('spotlight', search, usernames);
+	spotlight(search, usernames, type) {
+		return call('spotlight', search, usernames, type);
 	},
 
 	createDirectMessage(username) {

app/views/RoomView/index.js

@@ -184,6 +184,8 @@ export default class RoomView extends React.Component {
 						dataSource={this.state.dataSource}
 						renderRow={item => this.renderItem({ item })}
 						initialListSize={10}
+						keyboardShouldPersistTaps='always'
+						keyboardDismissMode='interactive'
 					/>
 				</SafeAreaView>
 				{this.renderFooter()}