import React, {useEffect, useRef} from 'react';
import {withRouter, RouteComponentProps} from 'react-router-dom';
import {connect, ConnectedProps} from 'react-redux';
import {Loader} from 'UI';
import {fetchUserInfo, setJwt} from 'Duck/user';
import {fetchList as fetchSiteList} from 'Duck/site';
import {withStore} from 'App/mstore';
import {Map} from 'immutable';

import * as routes from './routes';
import {fetchTenants} from 'Duck/user';
import {setSessionPath} from 'Duck/sessions';
import {ModalProvider} from 'Components/Modal';
import {GLOBAL_DESTINATION_PATH, IFRAME, JWT_PARAM} from 'App/constants/storageKeys';
import PublicRoutes from 'App/PublicRoutes';
import Layout from 'App/layout/Layout';
import {fetchListActive as fetchMetadata} from 'Duck/customField';
import {init as initSite} from 'Duck/site';
import PrivateRoutes from 'App/PrivateRoutes';
import {checkParam} from 'App/utils';
import IFrameRoutes from 'App/IFrameRoutes';
import {ModalProvider as NewModalProvider} from 'Components/ModalContext';

interface RouterProps extends RouteComponentProps, ConnectedProps<typeof connector> {
    isLoggedIn: boolean;
    sites: Map<string, any>;
    loading: boolean;
    changePassword: boolean;
    isEnterprise: boolean;
    fetchUserInfo: () => any;
    fetchTenants: () => any;
    setSessionPath: (path: any) => any;
    fetchSiteList: (siteId?: number) => any;
    match: {
        params: {
            siteId: string;
        }
    };
    mstore: any;
    setJwt: (jwt: string) => any;
    fetchMetadata: (siteId: string) => void;
    initSite: (site: any) => void;
}

const Router: React.FC<RouterProps> = (props) => {
    const {
        isLoggedIn,
        siteId,
        sites,
        loading,
        location,
        fetchUserInfo,
        fetchSiteList,
        history,
        match: {params: {siteId: siteIdFromPath}},
        setSessionPath,
    } = props;
    const [isIframe, setIsIframe] = React.useState(false);
    const [isJwt, setIsJwt] = React.useState(false);

    const handleJwtFromUrl = () => {
        const urlJWT = new URLSearchParams(location.search).get('jwt');
        if (urlJWT) {
            props.setJwt(urlJWT);
        }
    };

    const handleDestinationPath = () => {
        if (!isLoggedIn && location.pathname !== routes.login()) {
            localStorage.setItem(GLOBAL_DESTINATION_PATH, location.pathname + location.search);
        }
    };

    const handleUserLogin = async () => {
        await fetchUserInfo();
        const siteIdFromPath = parseInt(location.pathname.split('/')[1]);
        await fetchSiteList(siteIdFromPath);
        props.mstore.initClient();

        const destinationPath = localStorage.getItem(GLOBAL_DESTINATION_PATH);
        if (
            destinationPath &&
            destinationPath !== routes.login() &&
            destinationPath !== routes.signup() &&
            destinationPath !== '/'
        ) {
            const url = new URL(destinationPath, window.location.origin);
            checkParams(url.search)
            history.push(destinationPath);
            localStorage.removeItem(GLOBAL_DESTINATION_PATH);
        }
    };

    const checkParams = (search?: string) => {
        const _isIframe = checkParam('iframe', IFRAME, search);
        const _isJwt = checkParam('jwt', JWT_PARAM, search);
        setIsIframe(_isIframe);
        setIsJwt(_isJwt);
    }

    useEffect(() => {
        checkParams();
        handleJwtFromUrl();
    }, []);

    useEffect(() => {
        // handleJwtFromUrl();
        handleDestinationPath();


        setSessionPath(previousLocation ? previousLocation : location);
    }, [location]);

    useEffect(() => {
        if (prevIsLoggedIn !== isLoggedIn && isLoggedIn) {
            handleUserLogin();
        }
    }, [isLoggedIn]);

    useEffect(() => {
        if (siteId && siteId !== lastFetchedSiteIdRef.current) {
            const activeSite = sites.find((s) => s.id == siteId);
            props.initSite(activeSite);
            props.fetchMetadata(siteId);
            lastFetchedSiteIdRef.current = siteId;
        }
    }, [siteId]);

    const lastFetchedSiteIdRef = useRef<any>(null);

    function usePrevious(value: any) {
        const ref = useRef();
        useEffect(() => {
            ref.current = value;
        }, [value]);
        return ref.current;
    }

    const prevIsLoggedIn = usePrevious(isLoggedIn);
    const previousLocation = usePrevious(location);

    const hideHeader = (location.pathname && location.pathname.includes('/session/')) ||
        location.pathname.includes('/assist/') || location.pathname.includes('multiview');

    if (isIframe) {
        return <IFrameRoutes isJwt={isJwt} isLoggedIn={isLoggedIn} loading={loading}/>;
    }

    return isLoggedIn ? (
        <NewModalProvider>
            <ModalProvider>
                <Loader loading={loading || !siteId} className='flex-1'>
                    <Layout hideHeader={hideHeader} siteId={siteId}>
                        <PrivateRoutes/>
                    </Layout>
                </Loader>
            </ModalProvider>
        </NewModalProvider>
    ) : <PublicRoutes/>;
};

const mapStateToProps = (state: Map<string, any>) => {
    const siteId = state.getIn(['site', 'siteId']);
    const jwt = state.getIn(['user', 'jwt']);
    const changePassword = state.getIn(['user', 'account', 'changePassword']);
    const userInfoLoading = state.getIn(['user', 'fetchUserInfoRequest', 'loading']);
    const sitesLoading = state.getIn(['site', 'fetchListRequest', 'loading']);

    return {
        siteId,
        changePassword,
        sites: state.getIn(['site', 'list']),
        isLoggedIn: jwt !== null && !changePassword,
        loading: siteId === null || userInfoLoading || sitesLoading,
        email: state.getIn(['user', 'account', 'email']),
        account: state.getIn(['user', 'account']),
        organisation: state.getIn(['user', 'account', 'name']),
        tenantId: state.getIn(['user', 'account', 'tenantId']),
        tenants: state.getIn(['user', 'tenants']),
        isEnterprise:
            state.getIn(['user', 'account', 'edition']) === 'ee' ||
            state.getIn(['user', 'authDetails', 'edition']) === 'ee'
    };
};

const mapDispatchToProps = {
    fetchUserInfo,
    fetchTenants,
    setSessionPath,
    fetchSiteList,
    setJwt,
    fetchMetadata,
    initSite
};

const connector = connect(mapStateToProps, mapDispatchToProps);

export default withStore(withRouter(connector(Router)));