import React, { useState } from 'react';
import 'rsuite/lib/styles/index.less';
import { BrowserRouter as Router, Switch, Route } from 'react-router-dom';

import { AuthContext } from './helpers/authContext';
import { PrivateRoute } from './components';

import {
	Home,
	Login,
	Register,
	Dashboard,
	Invite,
	Availability,
	Schedule,
} from './screens';

const existingToken = JSON.parse(localStorage.getItem('token'));
const existingUser = JSON.parse(localStorage.getItem('user'));

export default function App() {
	const [isAuthenticated, setIsAuthenticated] = useState(!!existingToken);
	const [currentUser, setCurrentUser] = useState(existingUser || '');
	const [participant, setParticipant] = useState();
	const [possibleDates, setPossibleDates] = useState([]);
	const [currentMeeting, setCurrentMeeting] = useState({
		title: '',
		description: '', // optional
		duration: 0,
		status: 0, // Always 0 when meeting unconfirmed
	});

	const [authToken, setAuthToken] = useState(existingToken || '');

	const setToken = (data) => {
		localStorage.setItem('token', JSON.stringify(data));
		setAuthToken(data);
	};

	const setUser = (data) => {
		localStorage.setItem('user', JSON.stringify(data));
		setCurrentUser(data);
	};

	const setAuthentication = (boolean) => {
		if (!boolean) {
			localStorage.removeItem('token');
			localStorage.removeItem('user');
		}
		setIsAuthenticated(boolean);
	};

	return (
		<AuthContext.Provider
			value={{
				authToken,
				setAuthToken: setToken,
				isAuthenticated,
				setIsAuthenticated: setAuthentication,
				currentUser,
				setCurrentUser: setUser,
			}}
		>
			<Router>
				<Switch>
					<Route path='/' exact component={Home} />
					<Route path='/login' component={Login} />
					<Route path='/register' component={Register} />

					<PrivateRoute
						path='/dashboard'
						component={Dashboard}
						currentUser={currentUser}
					/>
					<PrivateRoute
						path='/schedule'
						component={Schedule}
						possibleDates={possibleDates}
						setPossibleDates={setPossibleDates}
						currentMeeting={currentMeeting}
						setCurrentMeeting={setCurrentMeeting}
						currentUser={currentUser}
						setParticipant={setParticipant}
					/>
					<PrivateRoute
						path='/availability'
						component={Availability}
						possibleDates={possibleDates}
						currentUser={currentUser}
						currentMeeting={currentMeeting}
						participant={participant}
					/>
					<PrivateRoute
						path='/invite'
						component={Invite}
						currentMeeting={currentMeeting}
						currentUser={currentUser}
					/>
				</Switch>
			</Router>
		</AuthContext.Provider>
	);
}