/*
 * Copyright (c) 2021 AtLarge Research
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import { Bullseye, AlertGroup, Alert, AlertVariant, AlertActionCloseButton } from '@patternfly/react-core'
import PropTypes from 'prop-types'
import Link from 'next/link'
import { Tr, Th, Thead, Td, ActionsColumn, Tbody, TableComposable } from '@patternfly/react-table'
import React, { useState } from 'react'
import TableEmptyState from '../util/TableEmptyState'
import { parseAndFormatDateTime } from '../../util/date-time'
import { useTopologies, useDeleteTopology } from '../../data/topology'

function TopologyTable({ projectId }) {
    const [error, setError] = useState('')

    const { status, data: topologies = [] } = useTopologies(projectId)
    const { mutate: deleteTopology } = useDeleteTopology({
        onError: (error) => setError(error),
    })

    const downloadTopology = (topology) => {
        const data = JSON.stringify(
            { name: topology.name, rooms: topology.rooms },
            (key, value) => {
                if (key === 'id' || key === 'topologyId' || key === 'roomId' || key === 'rackId' || key === 'roomid') {
                    return undefined
                }
                return value
            },
            4
        )
        const blob = new Blob([data], { type: 'application/json' })
        const url = URL.createObjectURL(blob)
        const link = document.createElement('a')
        link.href = url
        link.download = `${topology.name}.json`
        document.body.appendChild(link)
        link.click()
        document.body.removeChild(link)
        URL.revokeObjectURL(url)
    }

    const actions = (topology) => [
        {
            title: 'Download as JSON',
            onClick: () => downloadTopology(topology),
        },
        {
            title: 'Delete Topology',
            onClick: () => deleteTopology({ projectId, number: topology.number }),
            isDisabled: topology.number === 0,
        },
    ]

    return (
        <>
            <AlertGroup isToast>
                {error && (
                    <Alert
                        isLiveRegion
                        variant={AlertVariant.danger}
                        title={error}
                        actionClose={
                            <AlertActionCloseButton
                                title={error}
                                variantLabel="danger alert"
                                onClose={() => setError(null)}
                            />
                        }
                    />
                )}
            </AlertGroup>
            <TableComposable aria-label="Topology List" variant="compact">
                <Thead>
                    <Tr>
                        <Th>Name</Th>
                        <Th>Rooms</Th>
                        <Th>Last Edited</Th>
                    </Tr>
                </Thead>
                <Tbody>
                    {topologies.map((topology) => (
                        <Tr key={topology.id}>
                            <Td dataLabel="Name">
                                <Link href={`/projects/${projectId}/topologies/${topology.number}`}>
                                    {topology.name}
                                </Link>
                            </Td>
                            <Td dataLabel="Rooms">
                                {topology.rooms.length === 1 ? '1 room' : `${topology.rooms.length} rooms`}
                            </Td>
                            <Td dataLabel="Last Edited">{parseAndFormatDateTime(topology.updatedAt)}</Td>
                            <Td isActionCell>
                                <ActionsColumn items={actions(topology)} />
                            </Td>
                        </Tr>
                    ))}
                    {topologies.length === 0 && (
                        <Tr>
                            <Td colSpan={3}>
                                <Bullseye>
                                    <TableEmptyState
                                        status={status}
                                        loadingTitle="Loading topologies"
                                        emptyTitle="No topologies"
                                        emptyText="You have not created any topology for this project yet. Click the New Topology button to create one."
                                    />
                                </Bullseye>
                            </Td>
                        </Tr>
                    )}
                </Tbody>
            </TableComposable>
        </>
    )
}

TopologyTable.propTypes = {
    projectId: PropTypes.number,
}

export default TopologyTable