import { Link, createFileRoute } from '@tanstack/react-router'
import { m } from '@/i18n/messages'
import { bookingStatus } from '@/i18n/i18n-enum.gen'
import { useLocale, getLocale } from '@/i18n/config'
import { asI18n } from '@pikku/react'
import { Box, Container, Group, Paper, Stack, Text } from '@pikku/mantine/core'
import { usePikkuQuery } from '@project/functions-sdk/pikku/api.gen'
import { usePageTitle } from '../components/AppLayout'
import { PublicShell } from '../components/PublicShell'
import { BOOKING_STATUS, type BookingStatus } from '../lib/status'
import { fmtDateShort } from '../lib/dates'

const COLUMNS: BookingStatus[] = ['enquiry', 'reserved', 'confirmed', 'ended', 'cancelled']

type Booking = {
  bookingId: string
  eventName: string
  startDate: Date
  endDate: Date
  status: string
  clientName: string
  isStammgruppe: boolean
  depositPaid: boolean
  hasDeposit: boolean
  halfHouse: boolean
}

function BookingCard({ booking, locale }: { booking: Booking; locale: string }) {
  useLocale()
  const palette = BOOKING_STATUS[booking.status as BookingStatus]

  return (
    <Link
      to="/admin/bookings/$bookingId"
      params={{ bookingId: booking.bookingId }}
      style={{ textDecoration: 'none', display: 'block' }}
    >
    <Paper
      withBorder
      radius="md"
      p="sm"
      style={{
        borderLeft: `3px solid ${palette.dot}`,
        cursor: 'pointer',
      }}
    >
      <Stack gap={4}>
        <Text size="sm" fw={600} lineClamp={2} c="var(--mantine-color-text)">
          {asI18n(`${booking.eventName}`)}
        </Text>
        <Group gap={4}>
          {booking.isStammgruppe && (
            <Text size="xs" c="yellow.6" title={m.common__pages__admin_booking__client__regular_group()} style={{ cursor: 'default' }}>{asI18n('★')}</Text>
          )}
          <Text size="xs" c="dimmed" lineClamp={1}>{asI18n(`${booking.clientName}`)}</Text>
        </Group>
        <Text size="xs" c="dimmed">
          {asI18n(`${fmtDateShort(booking.startDate, locale)} – ${fmtDateShort(booking.endDate, locale)}`)}
        </Text>
        {booking.halfHouse && (
          <Text size="xs" c="dimmed">{asI18n('½')}</Text>
        )}
        {booking.hasDeposit && (
          <Text size="xs" c={booking.depositPaid ? 'green' : 'orange'} fw={500}>
            {(booking.depositPaid ? m.common__pages__admin__bookings__deposit__paid : m.common__pages__admin__bookings__deposit__outstanding)()}
          </Text>
        )}
      </Stack>
    </Paper>
    </Link>
  )
}

function KanbanInner() {
  useLocale()
  usePageTitle(m.common__pages__kanban__title())

  const { data, isLoading, error } = usePikkuQuery('getAdminBookings', { venueSlug: 'drawehn' })

  if (isLoading) return <Container py="xl"><Text>{m.common__states__loading()}</Text></Container>
  if (error) return <Container py="xl"><Text c="red">{m.common__states__error()}</Text></Container>
  if (!data) return null

  const byStatus = new Map<BookingStatus, Booking[]>()
  for (const col of COLUMNS) byStatus.set(col, [])
  for (const b of data.bookings) {
    const col = b.status as BookingStatus
    if (byStatus.has(col)) byStatus.get(col)!.push({ ...b, halfHouse: !!b.halfHouse } as unknown as Booking)
  }

  return (
    <Box
      style={{
        overflowX: 'auto',
        minHeight: 0,
        paddingBottom: 24,
      }}
      px="xl"
      pt="md"
    >
      <Group align="flex-start" wrap="nowrap" gap="md" style={{ minWidth: 'max-content' }}>
        {COLUMNS.map((col) => {
          const palette = BOOKING_STATUS[col]
          const cards = byStatus.get(col) ?? []
          return (
            <Stack
              key={col}
              gap="sm"
              style={{ width: 260, flexShrink: 0 }}
            >
              <Group gap="xs" align="center">
                <Box
                  style={{
                    width: 8,
                    height: 8,
                    borderRadius: 4,
                    background: palette.dot,
                    flexShrink: 0,
                  }}
                />
                <Text size="xs" fw={700} tt="uppercase" style={{ letterSpacing: '0.06em', color: palette.fg }}>
                  {bookingStatus[col]()}
                </Text>
                <Text size="xs" c="dimmed" ml="auto">
                  {cards.length}
                </Text>
              </Group>
              <Stack gap="xs">
                {cards.length === 0 ? (
                  <Paper withBorder radius="md" p="sm" style={{ borderStyle: 'dashed' }}>
                    <Text size="xs" c="dimmed" ta="center">{asI18n('—')}</Text>
                  </Paper>
                ) : (
                  cards.map((b) => (
                    <BookingCard key={b.bookingId} booking={b} locale={getLocale()} />
                  ))
                )}
              </Stack>
            </Stack>
          )
        })}
      </Group>
    </Box>
  )
}

function KanbanPage() {
  return (
    <PublicShell>
      <KanbanInner />
    </PublicShell>
  )
}

export const Route = createFileRoute('/kanban')({
  component: KanbanPage,
})