import type { BrokerPositionsPage as BrokerPositionsPageData } from '@/shared/api/responses';
import { Box } from '@mui/material';
import { Button, Heading, Skeleton, Text } from '@moex-vibe/design-system';
import { formatBrokerMoney as formatMoney } from '@/shared/lib/formatters';
import { PositionTicker } from './PositionTicker';

const tableSx = {
  width: '100%',
  borderCollapse: 'collapse',
  fontSize: 14,
} as const;

const thSx = {
  borderBottom: '1px solid',
  borderColor: 'divider',
  color: 'text.secondary',
  fontWeight: 600,
  p: 1,
  textAlign: 'left',
} as const;

const tdSx = {
  borderBottom: '1px solid',
  borderColor: 'divider',
  p: 1,
  verticalAlign: 'top',
  textAlign: 'right',
} as const;

const tdSxLeft = {
  ...tdSx,
  textAlign: 'left',
} as const;

function formatQuantity(value: number | null | undefined) {
  return value == null ? '-' : value.toLocaleString('ru-RU');
}

export function BrokerPositionTable({
  title,
  page,
  isLoading,
  isFetching,
  emptyMessage,
  pageNumber,
  onNext,
  onPrevious,
}: {
  title: string;
  page: BrokerPositionsPageData | undefined;
  isLoading: boolean;
  isFetching: boolean;
  emptyMessage: string;
  pageNumber: number;
  onNext: () => void;
  onPrevious: () => void;
}) {
  const positions = page?.items ?? [];
  const canGoBack = pageNumber > 1;
  const canGoForward = Boolean(page?.hasNext && page.nextCursor);

  return (
    <section aria-labelledby={`broker-${title.toLowerCase()}-heading`}>
      <Box
        sx={{
          display: 'flex',
          alignItems: 'center',
          gap: 1.5,
          justifyContent: 'space-between',
          mb: 1.5,
        }}
      >
        <Heading level={2} id={`broker-${title.toLowerCase()}-heading`}>
          {title}
        </Heading>
        <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
          <Button
            variant="secondary"
            size="small"
            aria-label="Предыдущая страница"
            onClick={onPrevious}
            disabled={!canGoBack || isFetching}
          >
            {isFetching ? <Skeleton shape="circular" width={14} height={14} /> : '←'}
          </Button>
          <Box
            sx={{
              minWidth: 20,
              textAlign: 'center',
              color: 'text.secondary',
              fontSize: 14,
              fontWeight: 600,
            }}
          >
            {pageNumber}
          </Box>
          <Button
            variant="secondary"
            size="small"
            aria-label="Следующая страница"
            onClick={onNext}
            disabled={!canGoForward || isFetching}
          >
            {isFetching ? <Skeleton shape="circular" width={14} height={14} /> : '→'}
          </Button>
        </Box>
      </Box>

      {isLoading ? (
        <Box sx={{ overflowX: 'auto', bgcolor: 'surface.default' }}>
          <Box component="table" sx={tableSx}>
            <Box component="thead">
              <Box component="tr">
                <Box component="th" sx={thSx} align="left">
                  Тикер
                </Box>
                <Box component="th" sx={thSx} align="left">
                  Название
                </Box>
                <Box component="th" sx={thSx} align="right">
                  Количество
                </Box>
                <Box component="th" sx={thSx} align="right">
                  Цена
                </Box>
                <Box component="th" sx={thSx} align="right">
                  Стоимость
                </Box>
              </Box>
            </Box>
            <Box component="tbody">
              {[1, 2, 3, 4].map((row) => (
                <Box component="tr" key={row}>
                  <Box component="td" sx={tdSxLeft}>
                    <Skeleton height={12} width="30%" shape="text" />
                  </Box>
                  <Box component="td" sx={tdSxLeft}>
                    <Skeleton height={12} width="50%" shape="text" />
                  </Box>
                  <Box component="td" sx={tdSx}>
                    <Skeleton height={12} width="20%" shape="text" />
                  </Box>
                  <Box component="td" sx={tdSx}>
                    <Skeleton height={12} width="25%" shape="text" />
                  </Box>
                  <Box component="td" sx={tdSx}>
                    <Skeleton height={12} width="25%" shape="text" />
                  </Box>
                </Box>
              ))}
            </Box>
          </Box>
        </Box>
      ) : positions.length === 0 && !isFetching ? (
        <Text component="p" tone="secondary">
          {emptyMessage}
        </Text>
      ) : (
        <Box sx={{ position: 'relative' }}>
          <Box sx={{ overflowX: 'auto', bgcolor: 'surface.default' }}>
            <Box component="table" sx={tableSx} aria-label={`Брокерские позиции: ${title}`}>
              <Box component="thead">
                <Box component="tr">
                  <Box component="th" sx={thSx} align="left">
                    Тикер
                  </Box>
                  <Box component="th" sx={thSx} align="left">
                    Название
                  </Box>
                  <Box component="th" sx={thSx} align="right">
                    Количество
                  </Box>
                  <Box component="th" sx={thSx} align="right">
                    Цена
                  </Box>
                  <Box component="th" sx={thSx} align="right">
                    Стоимость
                  </Box>
                </Box>
              </Box>
              <Box component="tbody">
                {positions.map((position) => (
                  <Box
                    component="tr"
                    key={
                      position.positionUid ||
                      position.instrumentUid ||
                      position.ticker ||
                      position.figi
                    }
                  >
                    <Box component="td" sx={tdSxLeft}>
                      <PositionTicker position={position} />
                    </Box>
                    <Box component="td" sx={tdSxLeft}>
                      <Text tone="secondary">{position.name || '-'}</Text>
                    </Box>
                    <Box component="td" sx={tdSx}>
                      {formatQuantity(position.quantity)}
                    </Box>
                    <Box component="td" sx={tdSx}>
                      {formatMoney(position.currentPrice)}
                    </Box>
                    <Box component="td" sx={tdSx}>
                      {formatMoney(position.currentValue)}
                    </Box>
                  </Box>
                ))}
              </Box>
            </Box>
          </Box>
          {isFetching && (
            <Box
              sx={{
                position: 'absolute',
                inset: 0,
                display: 'flex',
                alignItems: 'center',
                justifyContent: 'center',
                gap: 1,
                bgcolor: 'rgba(255,255,255,0.7)',
              }}
            >
              <Box className="loading-spinner" />
              <Text variant="caption" tone="secondary">
                Загрузка страницы {pageNumber}…
              </Text>
            </Box>
          )}
        </Box>
      )}
    </section>
  );
}