import React, {useState} from 'react';
import {useRouter} from 'next/router';

import {makeStyles} from '@material-ui/core/styles';
import Typography from '@material-ui/core/Typography';
import Box from '@material-ui/core/Box';
import Grid from '@material-ui/core/Grid';
import Paper from '@material-ui/core/Paper';

import TotalAssetsPie from '../components/TotalAssetsPie';
import TotalAssetSummary from '../components/TotalAssetsSummary';
import TotalAssetDetails from '../components/TotalAssetsDetails';

import TradingVolumePanel from '../components/TradingVolumePanel';
import ExchangeSessionTabPanel from '../components/ExchangeSessionTabPanel';

import DashboardLayout from '../layouts/DashboardLayout';

import {queryAssets, querySessions} from "../api/bbgo";

const useStyles = makeStyles((theme) => ({
    totalAssetsSummary: {
        margin: theme.spacing(2),
        padding: theme.spacing(2),
    },
    grid: {
        flexGrow: 1,
    },
    control: {
        padding: theme.spacing(2),
    },
}));


// props are pageProps passed from _app.tsx
export default function Home() {
    const classes = useStyles();
    const router = useRouter();

    const [assets, setAssets] = useState({})
    const [sessions, setSessions] = React.useState([])

    React.useEffect(() => {
        querySessions((sessions) => {
            if (sessions && sessions.length > 0) {
                setSessions(sessions)
                queryAssets(setAssets)
            } else {
                router.push("/setup");
            }
        }).catch((err) => {
            console.error(err);
        })
    }, [router])

    if (sessions.length == 0) {
        return (
            <DashboardLayout>
                <Box m={4}>
                    <Typography variant="h4" gutterBottom>
                        Loading
                    </Typography>
                </Box>
            </DashboardLayout>
        );
    }

    console.log("index: assets", assets)

    return (
        <DashboardLayout>
            <Paper className={classes.totalAssetsSummary}>
                <Typography variant="h4" gutterBottom>
                    Total Assets
                </Typography>

                <div className={classes.grid}>
                    <Grid container
                          direction="row"
                          justify="space-around"
                          alignItems="flex-start"
                          spacing={1}>
                        <Grid item xs={12} md={8}>
                            <TotalAssetSummary assets={assets}/>
                            <TotalAssetsPie assets={assets}/>
                        </Grid>

                        <Grid item xs={12} md={4}>
                            <TotalAssetDetails assets={assets}/>
                        </Grid>
                    </Grid>
                </div>
            </Paper>

            <TradingVolumePanel/>

            <ExchangeSessionTabPanel/>
        </DashboardLayout>
    );
}