import React from 'react';
import { makeStyles, useTheme, withStyles } from '@material-ui/core/styles';
import { useEffect } from 'react';
import AppBar from '@material-ui/core/AppBar';
import Toolbar from '@material-ui/core/Toolbar';
import Typography from '@material-ui/core/Typography';
import Button from '@material-ui/core/Button';
import IconButton from '@material-ui/core/IconButton';
import MenuIcon from '@material-ui/icons/Menu';
import clsx from 'clsx';
import Drawer from '@material-ui/core/Drawer';
import List from '@material-ui/core/List';
import CssBaseline from '@material-ui/core/CssBaseline';
import Divider from '@material-ui/core/Divider';
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 InfoIcon from '@material-ui/icons/Info';
import InboxIcon from '@material-ui/icons/MoveToInbox';
import MailIcon from '@material-ui/icons/Mail';
import ImageList from './imageList';
import PhotoIcon from '@material-ui/icons/Photo';
import ShareIcon from '@material-ui/icons/Share';
import PhotoAlbumIcon from '@material-ui/icons/PhotoAlbum';
import LibraryAddCheckIcon from '@material-ui/icons/LibraryAddCheck';
import Grid from '@material-ui/core/Grid';
import DeleteIcon from '@material-ui/icons/Delete';
import CloudUploadIcon from '@material-ui/icons/CloudUpload';
import HelpOutlineIcon from '@material-ui/icons/HelpOutline';
import SettingsIcon from '@material-ui/icons/Settings';
import Avatar from '@material-ui/core/Avatar';
import Icon from '@material-ui/core/Icon';
import AddCircle from '@material-ui/icons/AddCircle';
import CloudIcon from '@material-ui/icons/Cloud';
import LinearProgress from '@material-ui/core/LinearProgress';
import Modal from '@material-ui/core/Modal';
import Backdrop from '@material-ui/core/Backdrop';
import Fade from '@material-ui/core/Fade';
import ListItemAvatar from '@material-ui/core/ListItemAvatar';
import ImageIcon from '@material-ui/icons/Image';
import WorkIcon from '@material-ui/icons/Work';
import BeachAccessIcon from '@material-ui/icons/BeachAccess';
import Paper from '@material-ui/core/Paper';
import TodayIcon from '@material-ui/icons/Today';
import CropOriginalIcon from '@material-ui/icons/CropOriginal';
import CameraIcon from '@material-ui/icons/Camera';
import LocationOnIcon from '@material-ui/icons/LocationOn';
import CloseIcon from '@material-ui/icons/Close';
import ListSubheader from '@material-ui/core/ListSubheader';
import Fab from '@material-ui/core/Fab';
import AddIcon from '@material-ui/icons/Add';
import ArrowBackIosIcon from '@material-ui/icons/ArrowBackIos';
import ArrowForwardIosIcon from '@material-ui/icons/ArrowForwardIos';
import GridList from '@material-ui/core/GridList';
import GridListTile from '@material-ui/core/GridListTile';
import FolderList from './FolderList';
import Snackbar from '@material-ui/core/Snackbar';
import MuiAlert from '@material-ui/lab/Alert';

const drawerWidth = 240;

const BorderLinearProgress = withStyles((theme) => ({
    colorPrimary: {
        backgroundColor: theme.palette.grey[theme.palette.type === 'light' ? 200 : 700],
    },
    bar: {
        borderRadius: 5,
        backgroundColor: '#1a90ff',
    },
}))(LinearProgress);


const useStyles = makeStyles((theme) => ({
    root: {
        flexGrow: 1,
    },
    menuButton: {
        marginRight: theme.spacing(2),
    },
    title: {
        flexGrow: 1,
    },
    toolbar: {
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'flex-end',
        padding: theme.spacing(0, 1),
        // necessary for content to be below app bar
        ...theme.mixins.toolbar,
    },
    root: {
        display: 'flex',
    },
    appBar: {
        zIndex: theme.zIndex.drawer + 1,
        transition: theme.transitions.create(['width', 'margin'], {
            easing: theme.transitions.easing.sharp,
            duration: theme.transitions.duration.leavingScreen,
        }),
    },
    appBarShift: {
        marginLeft: drawerWidth,
        width: `calc(100% - ${drawerWidth}px)`,
        transition: theme.transitions.create(['width', 'margin'], {
            easing: theme.transitions.easing.sharp,
            duration: theme.transitions.duration.enteringScreen,
        }),
    },
    menuButton: {
        marginRight: 36,
    },
    hide: {
        display: 'none',
    },
    drawer: {
        width: drawerWidth,
        flexShrink: 0,
        whiteSpace: 'nowrap',
    },
    drawerOpen: {
        width: drawerWidth,
        transition: theme.transitions.create('width', {
            easing: theme.transitions.easing.sharp,
            duration: theme.transitions.duration.enteringScreen,
        }),
    },
    drawerClose: {
        transition: theme.transitions.create('width', {
            easing: theme.transitions.easing.sharp,
            duration: theme.transitions.duration.leavingScreen,
        }),
        overflowX: 'hidden',
        width: theme.spacing(7) + 1,
        [theme.breakpoints.up('sm')]: {
            width: theme.spacing(9) + 1,
        },
    },
    toolbar: {
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'flex-end',
        padding: theme.spacing(0, 1),
        // necessary for content to be below app bar
        ...theme.mixins.toolbar,
    },
    content: {
        flexGrow: 1,
        padding: theme.spacing(3),
    },
    modal: {
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'center',
    },
    paper: {
        backgroundColor: theme.palette.background.paper,
        width: '100%',
        height: '100%',
        //boxShadow: theme.shadows[5],
        //padding: theme.spacing(2, 4, 3),
    },
    fabL: {
        position: 'absolute',
        bottom: '50%',
        left: theme.spacing(2),
    },
    fabR: {
        position: 'absolute',
        bottom: '50%',
        //left: `calc(95% - ${theme.spacing(2)}px)`,
        //right: theme.spacing(2),
        right: `calc(${theme.spacing(2)}px + ( 100vw / 4 ))`,
        Mcontainer: {
            display: "flex",
            flexWrap: "wrap",
            position: "absolute",
            top: 0,
            left: 0,
            height: "100%",
            width: "100%",
            alignItems: "center"
        },
    },
}));

function Alert(props) {
    return <MuiAlert elevation={6} variant="filled" {...props} />;
}

export default function Main(props) {
//FOR AJAX
    const classes = useStyles();

    const [error, setError] = React.useState(null);
    const [isLoaded, setIsLoaded] = React.useState(false);
    const [items, setItems] = React.useState([]);

//END
    const theme = useTheme();
    const [open, setOpen] = React.useState(false);

    const handleDrawerOpen = () => {
        setOpen(true);
    };

    const handleDrawerClose = () => {
        setOpen(false);
    };

    const [Settingopen, setSettingOpen] = React.useState(false);

    const handleSettingOpen = () => {
        setSettingOpen(true);
    };

    const handleSettingClose = () => {
        setSettingOpen(false);
    };

    const [Alertopen, setAlertOpen] = React.useState(false);

    const handleAlertClick = () => {
        setAlertOpen(true);
    };

    const handleAlertClose = (event, reason) => {
        if (reason === 'clickaway') {
            return;
        }

        setAlertOpen(false);
    };

    const [Imagelistopen, setImagelistOpen] = React.useState(true);
    const [Folderlistopen, setFolderlistOpen] = React.useState(false);

    const [folderName, setFolderName] = React.useState('user:/Photo/Photo/uploads/');


    const setFolderNameF = (folderN) => {
        setFolderName(folderN);
        console.log("3" + folderName);
        setImagelistOpen(true);
        setFolderlistOpen(false);
    }

    const handleClick = value => () => {
        console.log(value);
        switch (value) {
            case "Photos":
                setImagelistOpen(true);
                setFolderlistOpen(false);
                break;
            case "Albums":
                setFolderlistOpen(true);
                setImagelistOpen(false);
                break;
            //case "Sharing":
                //setAlertOpen(true);
            //case "Utilities":
                //setAlertOpen(true);
        }
    }

    useEffect(() => {
        fetch("/backend_test/config", {})
            /*
            fetch("/system/ajgi/interface?script=/Photo/backend/listFolder.js", {
                method: 'post',
                body: JSON.stringify({ folder: folderName })
            })
            */
            .then(res => res.json())
            .then(
                (result) => {
                    setIsLoaded(true);
                    setItems(result);
                },
                // Note: it's important to handle errors here
                // instead of a catch() block so that we don't swallow
                // exceptions from actual bugs in components.
                (error) => {
                    setIsLoaded(true);
                    setError(error);
                }
            )
    }, [])


    if (error) {
        return <div>Error: {error.message} (Config.js)</div>;
    } else if (!isLoaded) {
        return <div><LinearProgress /></div>;
    } else {
        return (
            <div className={classes.root}>
                <AppBar position="fixed" style={{ background: '#2196f3' }} className={
                    clsx(classes.appBar, {
                        [classes.appBarShift]: open,
                    })
                }>
                    <Toolbar >
                        <IconButton edge="start" onClick={handleDrawerOpen} className={
                            clsx(classes.menuButton, {
                                [classes.hide]: open,
                            })
                        } className={classes.menuButton} color="inherit" aria-label="menu">
                            <MenuIcon />
                        </IconButton>
                        <Typography variant="h6" className={classes.title}>
                            ArOZ Photo
                    </Typography>
                        <Button variant="contained" startIcon={<CloudUploadIcon />} type="button" onClick={handleAlertClick}>Upload</Button>
                        <IconButton style={{ color: '#ffffff' }} aria-label="help" onClick={handleAlertClick}>
                            <HelpOutlineIcon />
                        </IconButton>
                        <IconButton style={{ color: '#ffffff' }} aria-label="settings" onClick={handleSettingOpen}>
                            <SettingsIcon />
                        </IconButton>
                        <Avatar alt={items.username} src={items.usericon} />
                    </Toolbar>
                </AppBar>
                <Drawer
                    variant="permanent"
                    className={
                        clsx(classes.drawer, {
                            [classes.drawerOpen]: open,
                            [classes.drawerClose]: !open,
                        })
                    }
                    classes={
                        {
                            paper: clsx({
                                [classes.drawerOpen]: open,
                                [classes.drawerClose]: !open,
                            }),
                        }
                    }>
                    <div className={classes.toolbar}>
                        <IconButton onClick={handleDrawerClose}>
                            {theme.direction === 'ltr' ? <ChevronLeftIcon /> : <ChevronRightIcon />}
                        </IconButton>
                    </div>
                    <Divider />
                    <List>
                        {['Photos', /* 'Sharing', */ 'Albums', /* 'Utilities' */].map((text, index) => (
                            <ListItem button key={text} onClick={handleClick(text)}>
                                { /* index == 0 ? < PhotoIcon /> : index == 1 ? < ShareIcon /> : index == 2 ? < PhotoAlbumIcon /> : < LibraryAddCheckIcon /> */}
                                <ListItemIcon>{index == 0 ? < PhotoIcon /> : < PhotoAlbumIcon />}</ListItemIcon>
                                <ListItemText primary={text} />
                            </ListItem>
                        ))}
                    </List>
                    <Divider />
                    <List>
                            <ListItem button key="Storage">
                                <ListItemIcon>< CloudIcon /></ListItemIcon>
                                <ListItemText primary="Storage" secondary={<BorderLinearProgress variant="determinate" value={items.quota} />} />
                            </ListItem>
                    </List>
                </Drawer>
                <main className={classes.content}>
                    <div className={classes.toolbar} />
                    {Imagelistopen && <ImageList path={folderName} />}
                    {Folderlistopen && <FolderList onChange={setFolderNameF} folderName={setFolderNameF} />}
                </main>
                <Snackbar open={Alertopen} autoHideDuration={6000} onClose={handleAlertClose}>
                    <Alert onClose={handleAlertClose} severity="error">
                        This function has not been implemented on this platform (aCloud 0x0)
        </Alert>
                </Snackbar>

                <Modal
                    aria-labelledby="transition-modal-title"
                    aria-describedby="transition-modal-description"
                    className={classes.modal}
                    open={Settingopen}
                    onClose={handleSettingClose}
                    closeAfterTransition
                    BackdropComponent={Backdrop}
                    BackdropProps={{
                        timeout: 500,
                    }}
                >
                    <Fade in={Settingopen}>
                        <div className={classes.paper}>
                            <Grid container alignItems="flex-start" justify="flex-end" direction="row">
                                <IconButton color="primary" aria-label="close" onClick={handleSettingClose}>
                                    <CloseIcon />
                                </IconButton>
                            </Grid>
                            <List>
                                <ListItem button>
                                    <ListItemAvatar>
                                        <Avatar>
                                            <InfoIcon />
                                        </Avatar>
                                    </ListItemAvatar>
                                    <ListItemText primary="Version" secondary="v1.0.0-alpha" />
                                </ListItem>
                                <ListItem button>
                                    <ListItemAvatar>
                                        <Avatar>
                                            <InfoIcon />
                                        </Avatar>
                                    </ListItemAvatar>
                                    <ListItemText primary="Developer" secondary="Alanyeung.co" />
                                </ListItem>
                            </List>
                        </div>
                    </Fade>
                </Modal>
            </div>
        );
    }
}