import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import {
	View, Text, ViewPropTypes, Image as ImageRN
} from 'react-native';
import Icon from 'react-native-vector-icons/MaterialIcons';
import moment from 'moment';
import { KeyboardUtils } from 'react-native-keyboard-input';
import { State, RectButton, LongPressGestureHandler } from 'react-native-gesture-handler';

import Image from './Image';
import User from './User';
import Avatar from '../Avatar';
import Audio from './Audio';
import Video from './Video';
import Markdown from './Markdown';
import Url from './Url';
import Reply from './Reply';
import ReactionsModal from './ReactionsModal';
import Emoji from './Emoji';
import styles from './styles';
import I18n from '../../i18n';
import messagesStatus from '../../constants/messagesStatus';

const SYSTEM_MESSAGES = [
	'r',
	'au',
	'ru',
	'ul',
	'uj',
	'rm',
	'user-muted',
	'user-unmuted',
	'message_pinned',
	'subscription-role-added',
	'subscription-role-removed',
	'room_changed_description',
	'room_changed_announcement',
	'room_changed_topic',
	'room_changed_privacy'
];

const getInfoMessage = ({
	type, role, msg, user
}) => {
	const { username } = user;
	if (type === 'rm') {
		return I18n.t('Message_removed');
	} else if (type === 'uj') {
		return I18n.t('Has_joined_the_channel');
	} else if (type === 'r') {
		return I18n.t('Room_name_changed', { name: msg, userBy: username });
	} else if (type === 'message_pinned') {
		return I18n.t('Message_pinned');
	} else if (type === 'ul') {
		return I18n.t('Has_left_the_channel');
	} else if (type === 'ru') {
		return I18n.t('User_removed_by', { userRemoved: msg, userBy: username });
	} else if (type === 'au') {
		return I18n.t('User_added_by', { userAdded: msg, userBy: username });
	} else if (type === 'user-muted') {
		return I18n.t('User_muted_by', { userMuted: msg, userBy: username });
	} else if (type === 'user-unmuted') {
		return I18n.t('User_unmuted_by', { userUnmuted: msg, userBy: username });
	} else if (type === 'subscription-role-added') {
		return `${ msg } was set ${ role } by ${ username }`;
	} else if (type === 'subscription-role-removed') {
		return `${ msg } is no longer ${ role } by ${ username }`;
	} else if (type === 'room_changed_description') {
		return I18n.t('Room_changed_description', { description: msg, userBy: username });
	} else if (type === 'room_changed_announcement') {
		return I18n.t('Room_changed_announcement', { announcement: msg, userBy: username });
	} else if (type === 'room_changed_topic') {
		return I18n.t('Room_changed_topic', { topic: msg, userBy: username });
	} else if (type === 'room_changed_privacy') {
		return I18n.t('Room_changed_privacy', { type: msg, userBy: username });
	}
	return '';
};

export default class Message extends PureComponent {
	static propTypes = {
		baseUrl: PropTypes.string.isRequired,
		customEmojis: PropTypes.object.isRequired,
		timeFormat: PropTypes.string.isRequired,
		msg: PropTypes.string,
		user: PropTypes.shape({
			id: PropTypes.string.isRequired,
			username: PropTypes.string.isRequired,
			token: PropTypes.string.isRequired
		}),
		author: PropTypes.shape({
			_id: PropTypes.string.isRequired,
			username: PropTypes.string.isRequired,
			name: PropTypes.string
		}),
		status: PropTypes.any,
		reactions: PropTypes.any,
		editing: PropTypes.bool,
		style: ViewPropTypes.style,
		archived: PropTypes.bool,
		broadcast: PropTypes.bool,
		reactionsModal: PropTypes.bool,
		type: PropTypes.string,
		header: PropTypes.bool,
		avatar: PropTypes.string,
		alias: PropTypes.string,
		ts: PropTypes.instanceOf(Date),
		edited: PropTypes.bool,
		attachments: PropTypes.oneOfType([
			PropTypes.array,
			PropTypes.object
		]),
		urls: PropTypes.oneOfType([
			PropTypes.array,
			PropTypes.object
		]),
		useRealName: PropTypes.bool,
		// methods
		closeReactions: PropTypes.func,
		onErrorPress: PropTypes.func,
		onLongPress: PropTypes.func,
		onReactionLongPress: PropTypes.func,
		onReactionPress: PropTypes.func,
		replyBroadcast: PropTypes.func,
		toggleReactionPicker: PropTypes.func
	}

	static defaultProps = {
		archived: false,
		broadcast: false,
		attachments: [],
		urls: [],
		reactions: [],
		onLongPress: () => {}
	}

	onPress = () => {
		KeyboardUtils.dismiss();
	}

	isInfoMessage = () => {
		const { type } = this.props;
		return SYSTEM_MESSAGES.includes(type);
	}

	isOwn = () => {
		const { author, user } = this.props;
		return author._id === user.id;
	}

	isDeleted() {
		const { type } = this.props;
		return type === 'rm';
	}

	isTemp() {
		const { status } = this.props;
		return status === messagesStatus.TEMP || status === messagesStatus.ERROR;
	}

	hasError() {
		const { status } = this.props;
		return status === messagesStatus.ERROR;
	}

	renderAvatar = () => {
		const {
			header, avatar, author, baseUrl
		} = this.props;
		if (header) {
			return (
				<Avatar
					style={styles.avatar}
					text={avatar ? '' : author.username}
					size={36}
					borderRadius={4}
					avatar={avatar}
					baseUrl={baseUrl}
				/>
			);
		}
		return null;
	}

	renderUsername = () => {
		const {
			header, timeFormat, author, alias, ts, useRealName
		} = this.props;
		if (header) {
			return (
				<User
					onPress={this._onPress}
					timeFormat={timeFormat}
					username={(useRealName && author.name) || author.username}
					alias={alias}
					ts={ts}
					temp={this.isTemp()}
				/>
			);
		}
		return null;
	}

	renderContent() {
		if (this.isInfoMessage()) {
			return <Text style={styles.textInfo}>{getInfoMessage({ ...this.props })}</Text>;
		}
		const {
			customEmojis, msg, baseUrl, user, edited
		} = this.props;
		return <Markdown msg={msg} customEmojis={customEmojis} baseUrl={baseUrl} username={user.username} edited={edited} />;
	}

	renderAttachment() {
		const { attachments, timeFormat } = this.props;

		if (attachments.length === 0) {
			return null;
		}

		return attachments.map((file, index) => {
			const { user, baseUrl, customEmojis } = this.props;
			if (file.image_url) {
				return <Image key={file.image_url} file={file} user={user} baseUrl={baseUrl} customEmojis={customEmojis} />;
			}
			if (file.audio_url) {
				return <Audio key={file.audio_url} file={file} user={user} baseUrl={baseUrl} customEmojis={customEmojis} />;
			}
			if (file.video_url) {
				return <Video key={file.video_url} file={file} user={user} baseUrl={baseUrl} customEmojis={customEmojis} />;
			}

			// eslint-disable-next-line react/no-array-index-key
			return <Reply key={index} index={index} attachment={file} timeFormat={timeFormat} user={user} baseUrl={baseUrl} customEmojis={customEmojis} />;
		});
	}

	renderUrl = () => {
		const { urls } = this.props;
		if (urls.length === 0) {
			return null;
		}

		return urls.map((url, index) => (
			<Url url={url} key={url.url} index={index} />
		));
	}

	renderError = () => {
		if (!this.hasError()) {
			return null;
		}
		const { onErrorPress } = this.props;
		return <Icon name='error-outline' color='red' size={20} style={styles.errorIcon} onPress={onErrorPress} />;
	}

	renderReaction = (reaction) => {
		const {
			user, onReactionLongPress, onReactionPress, customEmojis, baseUrl
		} = this.props;
		const reacted = reaction.usernames.findIndex(item => item.value === user.username) !== -1;
		const underlayColor = reacted ? '#fff' : '#e1e5e8';
		return (
			<LongPressGestureHandler
				key={reaction.emoji}
				onHandlerStateChange={({ nativeEvent }) => nativeEvent.state === State.ACTIVE && onReactionLongPress()}
			>
				<RectButton
					onPress={() => onReactionPress(reaction.emoji)}
					testID={`message-reaction-${ reaction.emoji }`}
					style={[styles.reactionButton, reacted && { backgroundColor: '#e8f2ff' }]}
					activeOpacity={0.8}
					underlayColor={underlayColor}
				>
					<View style={[styles.reactionContainer, reacted && styles.reactedContainer]}>
						<Emoji
							content={reaction.emoji}
							customEmojis={customEmojis}
							standardEmojiStyle={styles.reactionEmoji}
							customEmojiStyle={styles.reactionCustomEmoji}
							baseUrl={baseUrl}
						/>
						<Text style={styles.reactionCount}>{ reaction.usernames.length }</Text>
					</View>
				</RectButton>
			</LongPressGestureHandler>
		);
	}

	renderReactions() {
		const { reactions, toggleReactionPicker } = this.props;
		if (reactions.length === 0) {
			return null;
		}
		return (
			<View style={styles.reactionsContainer}>
				{reactions.map(this.renderReaction)}
				<RectButton
					onPress={toggleReactionPicker}
					key='message-add-reaction'
					testID='message-add-reaction'
					style={styles.reactionButton}
					activeOpacity={0.8}
					underlayColor='#e1e5e8'
				>
					<View style={styles.reactionContainer}>
						<ImageRN source={{ uri: 'add_reaction' }} style={styles.addReaction} />
					</View>
				</RectButton>
			</View>
		);
	}

	renderBroadcastReply() {
		const { broadcast, replyBroadcast } = this.props;
		if (broadcast && !this.isOwn()) {
			return (
				<RectButton
					onPress={replyBroadcast}
					style={styles.broadcastButton}
					activeOpacity={0.5}
					underlayColor='#fff'
				>
					<ImageRN source={{ uri: 'reply' }} style={styles.broadcastButtonIcon} />
					<Text style={styles.broadcastButtonText}>{I18n.t('Reply')}</Text>
				</RectButton>
			);
		}
		return null;
	}

	render() {
		const {
			editing, style, header, archived, onLongPress, reactionsModal, closeReactions, msg, ts, reactions, author, user, timeFormat, customEmojis, baseUrl
		} = this.props;
		const accessibilityLabel = I18n.t('Message_accessibility', { user: author.username, time: moment(ts).format(timeFormat), message: msg });

		return (
			<LongPressGestureHandler
				onHandlerStateChange={({ nativeEvent }) => nativeEvent.state === State.ACTIVE && onLongPress()}
			>
				<RectButton
					enabled={!(this.isInfoMessage() || this.hasError() || archived)}
					style={[styles.container, header && { marginBottom: 10 }]}
					onPress={this.onPress}
					activeOpacity={0.8}
					underlayColor='#e1e5e8'
				>
					<View
						style={[styles.message, editing && styles.editing, style]}
						accessibilityLabel={accessibilityLabel}
					>
						<View style={styles.flex}>
							{this.renderError()}
							{this.renderAvatar()}
							<View style={[styles.messageContent, header && styles.hasHeader, this.isTemp() && styles.temp]}>
								{this.renderUsername()}
								{this.renderContent()}
								{this.renderAttachment()}
								{this.renderUrl()}
								{this.renderReactions()}
								{this.renderBroadcastReply()}
							</View>
						</View>
						{reactionsModal
							? (
								<ReactionsModal
									isVisible={reactionsModal}
									reactions={reactions}
									user={user}
									customEmojis={customEmojis}
									baseUrl={baseUrl}
									close={closeReactions}
								/>
							)
							: null
						}
					</View>
				</RectButton>
			</LongPressGestureHandler>
		);
	}
}