import { useMemo, useContext } from 'react';
import { Outlet, useNavigate, useLocation, Navigate } from 'react-router-dom';
import { useTranslation } from 'react-i18next';
import { makeStyles, Theme, createStyles } from '@material-ui/core';
import GlobalEffect from '../components/layout/GlobalEffect';
import Header from '../components/layout/Header';
import NavMenu from '../components/menu/NavMenu';
import { NavMenuItem } from '../components/menu/Types';
import icons from '../components/icons/Icons';
import { authContext } from '../context/Auth';
import { rootContext } from '../context/Root';
import Overview from '../pages/overview/Overview';

const useStyles = makeStyles((theme: Theme) =>
  createStyles({
    root: {
      minHeight: '100vh',
      backgroundColor: '#f5f5f5',
    },
    content: {
      display: 'flex',

      '& .active': {
        '& path': {
          fill: theme.palette.attuGrey.dark,
        },
      },

      '& .normal': {
        '& path': {
          fill: theme.palette.primary.main,
        },
      },
    },
    body: {
      flex: 1,
      display: 'flex',
      flexDirection: 'column',
      height: '100vh',
      overflowY: 'scroll',
    },
  })
);

function Index() {
  const navigate = useNavigate();
  const { isAuth } = useContext(authContext);
  const { versionInfo } = useContext(rootContext);
  const { t: navTrans } = useTranslation('nav');
  const classes = useStyles();
  const location = useLocation();
  const isIndex = location.pathname === '/';
  const defaultActive = useMemo(() => {
    if (location.pathname.includes('collection')) {
      return navTrans('collection');
    }

    if (location.pathname.includes('search')) {
      return navTrans('search');
    }

    if (location.pathname.includes('system')) {
      return navTrans('system');
    }

    if (location.pathname.includes('users')) {
      return navTrans('user');
    }

    return navTrans('overview');
  }, [location, navTrans]);

  const menuItems: NavMenuItem[] = [
    {
      icon: icons.navOverview,
      label: navTrans('overview'),
      onClick: () => navigate('/'),
    },
    {
      icon: icons.navCollection,
      label: navTrans('collection'),
      onClick: () => navigate('/collections'),
    },
    {
      icon: icons.navSearch,
      label: navTrans('search'),
      onClick: () => navigate('/search'),
      iconActiveClass: 'normal',
      iconNormalClass: 'active',
    },
    {
      icon: icons.navSystem,
      label: navTrans('system'),
      onClick: () => navigate('/system'),
      iconActiveClass: 'normal',
      iconNormalClass: 'active',
    },
    {
      icon: icons.navPerson,
      label: navTrans('user'),
      onClick: () => navigate('/users'),
    },
  ];

  // check if is connected
  if (!isAuth) {
    return <Navigate to="/connect" />;
  }

  return (
    <>
      <div className={classes.root}>
        <GlobalEffect>
          <div className={classes.content}>
            <NavMenu
              width="200px"
              data={menuItems}
              defaultActive={defaultActive}
              // used for nested child menu
              defaultOpen={{ [navTrans('overview')]: true }}
              versionInfo={versionInfo}
            />

            <div className={classes.body}>
              <Header />
              {isIndex ? <Overview /> : <Outlet />}
            </div>
          </div>
        </GlobalEffect>
      </div>
    </>
  );
}

export default Index;