import React, { ErrorInfo, ReactElement, useEffect } from 'react'
import clsx from 'clsx'
import Drawer from '@material-ui/core/Drawer'
import AppBar from '@material-ui/core/AppBar'
import Toolbar from '@material-ui/core/Toolbar'
import List from '@material-ui/core/List'
import IconButton from '@material-ui/core/IconButton'
import { useStyles } from './style'
import { MapsList } from './maps-list'
import { FormattedMessage, IntlProvider, useIntl } from 'react-intl'
import { useQuery, useMutation, useQueryClient } from 'react-query'
import { activeInstance } from '../../redux/clientSlice'
import { useSelector } from 'react-redux'
import Client, { Label } from '../../classes/client'
import ActionDispatcher from './action-dispatcher'
import { ActionType } from './action-chooser'
import AccountMenu from './account-menu'
import ClientHealthSentinel from '../../classes/client/client-health-sentinel'
import HelpMenu from './help-menu'
import LanguageMenu from './language-menu'
import AppI18n, { Locales } from '../../classes/app-i18n'

import ListItemIcon from '@material-ui/core/ListItemIcon'
import ListItem from '@material-ui/core/ListItem'

import AddCircleTwoTone from '@material-ui/icons/AddCircleTwoTone'
import CloudUploadTwoTone from '@material-ui/icons/CloudUploadTwoTone'
import DeleteOutlineTwoTone from '@material-ui/icons/DeleteOutlineTwoTone'
import LabelTwoTone from '@material-ui/icons/LabelTwoTone'
import PersonOutlineTwoTone from '@material-ui/icons/PersonOutlineTwoTone'
import PublicTwoTone from '@material-ui/icons/PublicTwoTone'
import ScatterPlotTwoTone from '@material-ui/icons/ScatterPlotTwoTone'
import ShareTwoTone from '@material-ui/icons/ShareTwoTone'
import StarTwoTone from '@material-ui/icons/StarTwoTone'
import Tooltip from '@material-ui/core/Tooltip'
import Button from '@material-ui/core/Button'
import Link from '@material-ui/core/Link'
import ListItemText from '@material-ui/core/ListItemText'
import ListItemSecondaryAction from '@material-ui/core/ListItemSecondaryAction'

import logoIcon from '../../images/logo-small.svg'
import poweredByIcon from '../../images/pwrdby-white.svg'

export type Filter = GenericFilter | LabelFilter

export interface GenericFilter {
    type: 'public' | 'all' | 'starred' | 'shared' | 'label' | 'owned'
}

export interface LabelFilter {
    type: 'label'
    label: Label
}

interface ToolbarButtonInfo {
    filter: GenericFilter | LabelFilter
    label: string
    icon: React.ReactElement
}

const MapsPage = (): ReactElement => {
    const classes = useStyles()
    const [filter, setFilter] = React.useState<Filter>({ type: 'all' })
    const client: Client = useSelector(activeInstance)
    const queryClient = useQueryClient()
    const [activeDialog, setActiveDialog] = React.useState<ActionType | undefined>(undefined)
    const intl = useIntl()

    useEffect(() => {
        document.title = 'Maps | WiseMapping'
    }, [])

    const mutation = useMutation((id: number) => client.deleteLabel(id), {
        onSuccess: () => queryClient.invalidateQueries('labels'),
        onError: (error) => {
            console.error(`Unexpected error ${error}`)
        },
    })

    const handleMenuClick = (filter: Filter) => {
        queryClient.invalidateQueries('maps')
        setFilter(filter)
    }

    const handleLabelDelete = (id: number) => {
        mutation.mutate(id)
    }

    const { data } = useQuery<unknown, ErrorInfo, Label[]>('labels', () => {
        return client.fetchLabels()
    })

    const labels: Label[] = data ? data : []
    const filterButtons: ToolbarButtonInfo[] = [
        {
            filter: { type: 'all' },
            label: 'All',
            icon: <ScatterPlotTwoTone color="secondary" />,
        },
        {
            filter: { type: 'owned' },
            label: 'Owned',
            icon: <PersonOutlineTwoTone color="secondary" />,
        },
        {
            filter: { type: 'starred' },
            label: 'Starred',
            icon: <StarTwoTone color="secondary" />,
        },
        {
            filter: { type: 'shared' },
            label: 'Shared with me',
            icon: <ShareTwoTone color="secondary" />,
        },
        {
            filter: { type: 'public' },
            label: 'Public',
            icon: <PublicTwoTone color="secondary" />,
        },
    ]

    labels.forEach((l) =>
        filterButtons.push({
            filter: { type: 'label', label: l },
            label: l.title,
            icon: <LabelTwoTone style={{ color: l.color ? l.color : 'inherit' }} />,
        })
    )

    // Configure using user settings ...
    const appi18n = new AppI18n()
    const userLocale = appi18n.getUserLocale()

    return (
        <IntlProvider
            locale={userLocale.code}
            defaultLocale={Locales.EN.code}
            messages={userLocale.message}
        >
            <div className={classes.root}>
                <ClientHealthSentinel />
                <AppBar
                    position="fixed"
                    className={clsx(classes.appBar, {
                        [classes.appBarShift]: open,
                    })}
                    variant="outlined"
                    elevation={0}
                >
                    <Toolbar>
                        <Tooltip
                            arrow={true}
                            title={intl.formatMessage({
                                id: 'maps.create-tooltip',
                                defaultMessage: 'Create a New Map',
                            })}
                        >
                            <Button
                                color="primary"
                                data-testid="create"
                                size="medium"
                                variant="contained"
                                type="button"
                                disableElevation={true}
                                startIcon={<AddCircleTwoTone />}
                                className={classes.newMapButton}
                                onClick={() => setActiveDialog('create')}
                            >
                                <FormattedMessage id="action.new" defaultMessage="New Map" />
                            </Button>
                        </Tooltip>

                        <Tooltip
                            arrow={true}
                            title={intl.formatMessage({
                                id: 'maps.import-desc',
                                defaultMessage: 'Import from other tools',
                            })}
                        >
                            <Button
                                color="primary"
                                size="medium"
                                variant="outlined"
                                type="button"
                                disableElevation={true}
                                startIcon={<CloudUploadTwoTone />}
                                className={classes.importButton}
                                onClick={() => setActiveDialog('import')}
                            >
                                <FormattedMessage id="action.import" defaultMessage="Import" />
                            </Button>
                        </Tooltip>
                        <ActionDispatcher
                            action={activeDialog}
                            onClose={() => setActiveDialog(undefined)}
                            mapsId={[]}
                        />

                        <div className={classes.rightButtonGroup}>
                            <LanguageMenu />
                            <HelpMenu />
                            <AccountMenu />
                        </div>
                    </Toolbar>
                </AppBar>
                <Drawer
                    variant="permanent"
                    className={clsx(classes.drawer, {
                        [classes.drawerOpen]: open,
                    })}
                    classes={{
                        paper: clsx({
                            [classes.drawerOpen]: open,
                        }),
                    }}
                >
                    <div style={{ padding: '20px 0 20px 15px' }} key="logo">
                        <img src={logoIcon} alt="logo" />
                    </div>

                    <List component="nav">
                        {filterButtons.map((buttonInfo) => {
                            return (
                                <StyleListItem
                                    icon={buttonInfo.icon}
                                    label={buttonInfo.label}
                                    filter={buttonInfo.filter}
                                    active={filter}
                                    onClick={handleMenuClick}
                                    onDelete={handleLabelDelete}
                                    key={`${buttonInfo.filter.type}:${
                                        (buttonInfo.filter as LabelFilter).label
                                    }`}
                                />
                            )
                        })}
                    </List>

                    <div
                        style={{ position: 'absolute', bottom: '10px', left: '20px' }}
                        key="power-by"
                    >
                        <Link href="http://www.wisemapping.org/">
                            <img src={poweredByIcon} alt="Powered By WiseMapping" />
                        </Link>
                    </div>
                </Drawer>
                <main className={classes.content}>
                    <div className={classes.toolbar} />
                    <MapsList filter={filter} />
                </main>
            </div>
        </IntlProvider>
    )
}

interface ListItemProps {
    icon: React.ReactElement
    label: string
    filter: Filter
    active?: Filter
    onClick: (filter: Filter) => void
    onDelete?: (id: number) => void
}

const StyleListItem = (props: ListItemProps) => {
    const icon = props.icon
    const label = props.label
    const filter = props.filter
    const activeFilter = props.active
    const onClick = props.onClick
    const onDeleteLabel = props.onDelete
    const isSelected =
        activeFilter &&
        activeFilter.type == filter.type &&
        (activeFilter.type != 'label' ||
            (activeFilter as LabelFilter).label == (filter as LabelFilter).label)

    const handleOnClick = (event: React.MouseEvent<HTMLDivElement, MouseEvent>, filter: Filter) => {
        event.stopPropagation()
        onClick(filter)
    }

    const handleOnDelete = (
        event: React.MouseEvent<HTMLButtonElement, MouseEvent>,
        filter: Filter
    ) => {
        event.stopPropagation()
        if (!onDeleteLabel) {
            throw 'Illegal state exeption'
        }
        onDeleteLabel((filter as LabelFilter).label.id)
    }

    return (
        <ListItem button selected={isSelected} onClick={(e) => handleOnClick(e, filter)}>
            <ListItemIcon>{icon}</ListItemIcon>
            <ListItemText style={{ color: 'white' }} primary={label} />
            {filter.type == 'label' && (
                <ListItemSecondaryAction>
                    <IconButton
                        edge="end"
                        aria-label="delete"
                        onClick={(e) => handleOnDelete(e, filter)}
                    >
                        <DeleteOutlineTwoTone color="secondary" />
                    </IconButton>
                </ListItemSecondaryAction>
            )}
        </ListItem>
    )
}

export default MapsPage