import React, { Component } from 'react';
import { View, Text, Animated, Easing, TouchableWithoutFeedback, TouchableOpacity, FlatList, Linking } from 'react-native';
import { batch, connect } from 'react-redux';
import { withSafeAreaInsets } from 'react-native-safe-area-context';
import { Subscription } from 'rxjs';

import * as List from '../../containers/List';
import Button from '../../containers/Button';
import { toggleServerDropdown } from '../../actions/rooms';
import { selectServerRequest, serverInitAdd } from '../../actions/server';
import { appStart } from '../../actions/app';
import RocketChat from '../../lib/rocketchat';
import I18n from '../../i18n';
import EventEmitter from '../../utils/events';
import ServerItem from '../../presentation/ServerItem';
import database from '../../lib/database';
import { themes } from '../../constants/colors';
import { withTheme } from '../../theme';
import { KEY_COMMAND, handleCommandSelectServer, IKeyCommandEvent } from '../../commands';
import { isTablet } from '../../utils/deviceInfo';
import { localAuthenticate } from '../../utils/localAuthentication';
import { showConfirmationAlert } from '../../utils/info';
import log, { events, logEvent } from '../../utils/log';
import { headerHeight } from '../../containers/Header';
import { goRoom } from '../../utils/goRoom';
import UserPreferences from '../../lib/userPreferences';
import { IApplicationState, IBaseScreen, RootEnum, TServerModel } from '../../definitions';
import styles from './styles';
import { ChatsStackParamList } from '../../stacks/types';

const ROW_HEIGHT = 68;
const ANIMATION_DURATION = 200;

interface IServerDropdownProps extends IBaseScreen<ChatsStackParamList, 'RoomsListView'> {
	insets?: {
		top: number;
	};
	closeServerDropdown: boolean;
	server: string;
	isMasterDetail: boolean;
}

interface IServerDropdownState {
	servers: TServerModel[];
}

class ServerDropdown extends Component<IServerDropdownProps, IServerDropdownState> {
	private animatedValue: Animated.Value;
	private subscription?: Subscription;
	private newServerTimeout?: ReturnType<typeof setTimeout> | false;

	constructor(props: IServerDropdownProps) {
		super(props);
		this.state = { servers: [] };
		this.animatedValue = new Animated.Value(0);
	}

	async componentDidMount() {
		const serversDB = database.servers;
		const observable = await serversDB.get('servers').query().observeWithColumns(['name']);

		this.subscription = observable.subscribe(data => {
			this.setState({ servers: data });
		});

		Animated.timing(this.animatedValue, {
			toValue: 1,
			duration: ANIMATION_DURATION,
			easing: Easing.inOut(Easing.quad),
			useNativeDriver: true
		}).start();
		if (isTablet) {
			EventEmitter.addEventListener(KEY_COMMAND, this.handleCommands);
		}
	}

	componentDidUpdate(prevProps: IServerDropdownProps) {
		const { closeServerDropdown } = this.props;
		if (prevProps.closeServerDropdown !== closeServerDropdown) {
			this.close();
		}
	}

	componentWillUnmount() {
		if (this.newServerTimeout) {
			clearTimeout(this.newServerTimeout);
			this.newServerTimeout = false;
		}
		if (this.subscription && this.subscription.unsubscribe) {
			this.subscription.unsubscribe();
		}
		if (isTablet) {
			EventEmitter.removeListener(KEY_COMMAND, this.handleCommands);
		}
	}

	close = () => {
		const { dispatch } = this.props;
		Animated.timing(this.animatedValue, {
			toValue: 0,
			duration: ANIMATION_DURATION,
			easing: Easing.inOut(Easing.quad),
			useNativeDriver: true
		}).start(() => dispatch(toggleServerDropdown()));
	};

	createWorkspace = async () => {
		logEvent(events.RL_CREATE_NEW_WORKSPACE);
		try {
			await Linking.openURL('https://cloud.rocket.chat/trial');
		} catch (e) {
			log(e);
		}
	};

	navToNewServer = (previousServer: string) => {
		const { dispatch } = this.props;
		batch(() => {
			dispatch(appStart({ root: RootEnum.ROOT_OUTSIDE }));
			dispatch(serverInitAdd(previousServer));
		});
	};

	addServer = () => {
		logEvent(events.RL_ADD_SERVER);
		const { server } = this.props;
		this.close();
		setTimeout(() => {
			this.navToNewServer(server);
		}, ANIMATION_DURATION);
	};

	select = async (server: string, version?: string) => {
		const { server: currentServer, dispatch, isMasterDetail } = this.props;
		this.close();
		if (currentServer !== server) {
			logEvent(events.RL_CHANGE_SERVER);
			const userId = await UserPreferences.getStringAsync(`${RocketChat.TOKEN_KEY}-${server}`);
			if (isMasterDetail) {
				goRoom({ item: {}, isMasterDetail });
			}
			if (!userId) {
				setTimeout(() => {
					this.navToNewServer(currentServer);
					this.newServerTimeout = setTimeout(() => {
						EventEmitter.emit('NewServer', { server });
					}, ANIMATION_DURATION);
				}, ANIMATION_DURATION);
			} else {
				await localAuthenticate(server);
				dispatch(selectServerRequest(server, version, true, true));
			}
		}
	};

	remove = (server: string) =>
		showConfirmationAlert({
			message: I18n.t('This_will_remove_all_data_from_this_server'),
			confirmationText: I18n.t('Delete'),
			onPress: async () => {
				this.close();
				try {
					await RocketChat.removeServer({ server });
				} catch {
					// do nothing
				}
			}
		});

	handleCommands = ({ event }: { event: IKeyCommandEvent }) => {
		const { servers } = this.state;
		const { navigation } = this.props;
		const { input } = event as unknown as { input: number };
		if (handleCommandSelectServer(event)) {
			if (servers[input - 1]) {
				this.select(servers[input - 1].id);
				navigation.navigate('RoomView');
			}
		}
	};

	renderServer = ({ item }: { item: { id: string; iconURL: string; name: string; version: string } }) => {
		const { server, theme } = this.props;

		return (
			<ServerItem
				item={item}
				onPress={() => this.select(item.id, item.version)}
				onLongPress={() => item.id === server || this.remove(item.id)}
				hasCheck={item.id === server}
				theme={theme}
			/>
		);
	};

	render() {
		const { servers } = this.state;
		const { theme, isMasterDetail, insets } = this.props;
		const maxRows = 4;
		const initialTop = 87 + Math.min(servers.length, maxRows) * ROW_HEIGHT;
		const statusBarHeight = insets?.top ?? 0;
		const heightDestination = isMasterDetail ? headerHeight + statusBarHeight : 0;
		const translateY = this.animatedValue.interpolate({
			inputRange: [0, 1],
			outputRange: [-initialTop, heightDestination]
		});
		const backdropOpacity = this.animatedValue.interpolate({
			inputRange: [0, 1],
			outputRange: [0, themes[theme].backdropOpacity]
		});
		return (
			<>
				<TouchableWithoutFeedback onPress={this.close}>
					<Animated.View
						style={[
							styles.backdrop,
							{
								backgroundColor: themes[theme].backdropColor,
								opacity: backdropOpacity,
								top: heightDestination
							}
						]}
					/>
				</TouchableWithoutFeedback>
				<Animated.View
					style={[
						styles.dropdownContainer,
						{
							transform: [{ translateY }],
							backgroundColor: themes[theme].backgroundColor,
							borderColor: themes[theme].separatorColor
						}
					]}
					testID='rooms-list-header-server-dropdown'>
					<View style={[styles.dropdownContainerHeader, styles.serverHeader, { borderColor: themes[theme].separatorColor }]}>
						<Text style={[styles.serverHeaderText, { color: themes[theme].auxiliaryText }]}>{I18n.t('Server')}</Text>
						<TouchableOpacity onPress={this.addServer} testID='rooms-list-header-server-add'>
							<Text style={[styles.serverHeaderAdd, { color: themes[theme].tintColor }]}>{I18n.t('Add_Server')}</Text>
						</TouchableOpacity>
					</View>
					<FlatList
						style={{ maxHeight: maxRows * ROW_HEIGHT }}
						data={servers}
						keyExtractor={item => item.id}
						renderItem={this.renderServer}
						ItemSeparatorComponent={List.Separator}
						keyboardShouldPersistTaps='always'
					/>
					<List.Separator />
					<Button
						title={I18n.t('Create_a_new_workspace')}
						type='secondary'
						onPress={this.createWorkspace}
						theme={theme}
						testID='rooms-list-header-create-workspace-button'
						style={styles.buttonCreateWorkspace}
						color={themes[theme].tintColor}
						styleText={[styles.serverHeaderAdd, { textAlign: 'center' }]}
					/>
				</Animated.View>
			</>
		);
	}
}

const mapStateToProps = (state: IApplicationState) => ({
	closeServerDropdown: state.rooms.closeServerDropdown,
	server: state.server.server,
	isMasterDetail: state.app.isMasterDetail
});

export default connect(mapStateToProps)(withSafeAreaInsets(withTheme(ServerDropdown)));