import React from 'react';
import { HashRouter as Router, Route, Link, Switch } from 'react-router-dom'
import PropTypes from 'prop-types';
import classNames from 'classnames';
import { withStyles } from '@material-ui/core/styles';
import Drawer from '@material-ui/core/Drawer';
import CssBaseline from '@material-ui/core/CssBaseline';
import AppBar from '@material-ui/core/AppBar';
import Toolbar from '@material-ui/core/Toolbar';
import List from '@material-ui/core/List';
import Typography from '@material-ui/core/Typography';
import Divider from '@material-ui/core/Divider';
import IconButton from '@material-ui/core/IconButton';
import MenuIcon from '@material-ui/icons/Menu';
import ChevronLeftIcon from '@material-ui/icons/ChevronLeft';
import ChevronRightIcon from '@material-ui/icons/ChevronRight';
import ListItem from '@material-ui/core/ListItem';
import ListItemIcon from '@material-ui/core/ListItemIcon';
import ListItemText from '@material-ui/core/ListItemText';
import InboxIcon from '@material-ui/icons/MoveToInbox';
import { ScaleLoader } from 'react-spinners'
import FundsManagement from './FundsManagement'
import ContractAdmin from './ContractAdmin'
import TransferGraph from './TransfersGraph'
import Dashboard from './Dashboard'

const drawerWidth = 240

const styles = theme => ({
  root: {
    display: 'flex',
  },
  appBar: {
    transition: theme.transitions.create(['margin', 'width'], {
      easing: theme.transitions.easing.sharp,
      duration: theme.transitions.duration.leavingScreen,
    }),
  },
  appBarShift: {
    width: `calc(100% - ${drawerWidth}px)`,
    marginLeft: drawerWidth,
    transition: theme.transitions.create(['margin', 'width'], {
      easing: theme.transitions.easing.easeOut,
      duration: theme.transitions.duration.enteringScreen,
    }),
  },
  appBarBg: {
    backgroundColor: '#111735'
  },
  childrenShift: {
    width: `calc(100% - ${drawerWidth}px)`
  },
  menuButton: {
    marginLeft: 12,
    marginRight: 20,
  },
  hide: {
    display: 'none',
  },
  drawer: {
    width: drawerWidth,
    flexShrink: 0,
  },
  drawerPaper: {
    width: drawerWidth,
  },
  drawerHeader: {
    display: 'flex',
    alignItems: 'center',
    padding: '0 8px',
    ...theme.mixins.toolbar,
    justifyContent: 'flex-end',
  },
  content: {
    flexGrow: 1,
    padding: theme.spacing.unit * 3,
    transition: theme.transitions.create('margin', {
      easing: theme.transitions.easing.sharp,
      duration: theme.transitions.duration.leavingScreen,
    }),
    marginLeft: -drawerWidth,
  },
  contentShift: {
    transition: theme.transitions.create('margin', {
      easing: theme.transitions.easing.easeOut,
      duration: theme.transitions.duration.enteringScreen,
    }),
    marginLeft: 0,
  },
  link: {
    textDecoration: 'none'
  }
});

class PersistentDrawerLeft extends React.Component {
  state = {
    open: false,
  };

  handleDrawerOpen = () => {
    this.setState({ open: true })
  };

  handleDrawerClose = () => {
    this.setState({ open: false })
  };

  render() {
    const { classes, theme, loading } = this.props
    const { open } = this.state

    return (
      <div className={classes.root}>
        <CssBaseline />
        <AppBar
          position="fixed"
          className={classNames(classes.appBar, classes.appBarBg, {
            [classes.appBarShift]: open,
          })}
        >
          <Toolbar disableGutters={!open}>
            <IconButton
              color="inherit"
              aria-label="Open drawer"
              onClick={this.handleDrawerOpen}
              className={classNames(classes.menuButton, open && !loading && classes.hide)}
            >
              {loading
               ? <ScaleLoader
                   sizeUnit={"px"}
                   height={20}
                   width={2}
                   margin="3px"
                   color={'#FFFFFF'}
               />
               : <MenuIcon />}
            </IconButton>
            <Typography variant="h6" color="inherit" noWrap>
              Liquid Funding
            </Typography>
          </Toolbar>
        </AppBar>
        <Drawer
          className={classes.drawer}
          variant="persistent"
          anchor="left"
          open={open}
          classes={{
            paper: classes.drawerPaper,
          }}
        >
          <div className={classes.drawerHeader}>
            <IconButton onClick={this.handleDrawerClose}>
              {theme.direction === 'ltr' ? <ChevronLeftIcon /> : <ChevronRightIcon />}
            </IconButton>
          </div>
          <Divider />
          <List>
            <Link to="/dashboard" className={classes.link}>
              <ListItem button>
                <ListItemIcon><InboxIcon /></ListItemIcon>
                <ListItemText primary="Dashboard" />
              </ListItem>
            </Link>
          </List>
          <List>
            <Link to="/funds-management/" className={classes.link}>
              <ListItem button>
                <ListItemIcon><InboxIcon /></ListItemIcon>
                <ListItemText primary="Funds Management" />
              </ListItem>
            </Link>
          </List>
          <List>
            <Link to="/insights/" className={classes.link}>
              <ListItem button>
                <ListItemIcon><InboxIcon /></ListItemIcon>
                <ListItemText primary="Insights" />
              </ListItem>
            </Link>
          </List>
          <List>
            <Link to="/admin/" className={classes.link}>
              <ListItem button>
                <ListItemIcon><InboxIcon /></ListItemIcon>
                <ListItemText primary="Contract Admin" />
              </ListItem>
            </Link>
          </List>
          <Divider />
        </Drawer>
        <main
          className={classNames(classes.content, {
            [classes.contentShift]: open,
          })}
        >
          <div className={classes.drawerHeader} />
          <div className={classNames(classes.appBar, {
            [classes.childrenShift]: open,
          })}>
            <Switch>
              <Route path="/(|dashboard)" component={Dashboard} />
              <Route path="/admin" component={ContractAdmin} />
              <Route path="/funds-management" render={() => <FundsManagement open={open} />} />
              <Route path="/insights" component={TransferGraph} />
            </Switch>
            {this.props.children}
          </div>
        </main>
      </div>
    );
  }
}

PersistentDrawerLeft.propTypes = {
  classes: PropTypes.object.isRequired,
  theme: PropTypes.object.isRequired,
  loading: PropTypes.bool.isRequired
};

export default withStyles(styles, { withTheme: true })(PersistentDrawerLeft)