import React from 'react';
import AppBar from '@material-ui/core/AppBar';
import Drawer from '@material-ui/core/Drawer';
import DrawerContent from '../DrawerContent/DrawerContent'
import Hidden from '@material-ui/core/Hidden';
import IconButton from '@material-ui/core/IconButton';
import MenuIcon from '@material-ui/icons/Menu';
import Toolbar from '@material-ui/core/Toolbar';
import Typography from '@material-ui/core/Typography'
import { makeStyles, useTheme } from '@material-ui/core/styles'

const drawerWidth = 240;

const useStyles = makeStyles((theme) => ({
  drawer: {
    [theme.breakpoints.up('sm')]: {
      width: drawerWidth,
      flexShrink: 0,
    },
  },
  appBar: {
    [theme.breakpoints.up('sm')]: {
      width: `calc(100% - ${drawerWidth}px)`,
      marginLeft: drawerWidth,
    },
  },
  menuButton: {
    marginRight: theme.spacing(2),
    [theme.breakpoints.up('sm')]: {
      display: 'none',
    },
  },
  drawerPaper: {
    width: drawerWidth,
  },
  content: {
    flexGrow: 1,
    padding: theme.spacing(3),
  },
}));

const Header = (props) => {
  const { window } = props;
  const classes = useStyles();
  const theme = useTheme();

  const [mobileOpen, setMobileOpen] = React.useState(false);

  const handleDrawerToggle = () => {
    setMobileOpen(!mobileOpen);
  };
  
  const container = window !== undefined ? () => window().document.body : undefined;

  return (
    <>
      <AppBar position="fixed" className={classes.appBar}>
        <Toolbar>
          <IconButton
            color="inherit"
            aria-label="open drawer"
            edge="start"
            onClick={handleDrawerToggle}
            className={classes.menuButton}
          >
            <MenuIcon />
          </IconButton>
          <Typography variant="h1" noWrap>
            Todo app
          </Typography>
        </Toolbar>
      </AppBar>
      <nav className={classes.drawer} aria-label="mailbox folders">
        <Hidden smUp implementation="css">
          <Drawer
            container={container}
            variant="temporary"
            anchor={theme.direction === 'rtl' ? 'right' : 'left'}
            open={mobileOpen}
            onClose={handleDrawerToggle}
            classes={{
              paper: classes.drawerPaper,
            }}
            ModalProps={{
              keepMounted: true,
            }}
          >
            <DrawerContent />
          </Drawer>
        </Hidden>
        <Hidden xsDown implementation="css">
          <Drawer
            classes={{
              paper: classes.drawerPaper,
            }}
            variant="permanent"
            open
          >
            <DrawerContent />
          </Drawer>
        </Hidden>
      </nav>
    </>
  )
}

export default Header