import { useState } from 'react';
import { Link } from 'react-router-dom';
import type { PositionWithPrice } from '../../api/responses';

interface Props {
  position: PositionWithPrice;
  onUpdate: (data: { quantity?: number; buyPrice?: number }) => void;
  onDelete: () => void;
}

export function BondPositionRow({ position, onUpdate, onDelete }: Props) {
  const [editingQty, setEditingQty] = useState(false);
  const [editingPrice, setEditingPrice] = useState(false);
  const [qty, setQty] = useState(String(position.quantity));
  const [price, setPrice] = useState(String(position.buyPrice ?? ''));

  function handleSaveQty() {
    const num = parseInt(qty, 10);
    if (!isNaN(num) && num >= 0 && num !== position.quantity) {
      onUpdate({ quantity: num });
    }
    setEditingQty(false);
  }

  function handleSavePrice() {
    const num = parseFloat(price);
    if (!isNaN(num) && num >= 0 && num !== position.buyPrice) {
      onUpdate({ buyPrice: num });
    } else if (price === '' && position.buyPrice !== null) {
      onUpdate({ buyPrice: undefined });
    }
    setEditingPrice(false);
  }

  function formatDate(dateStr: string | null | undefined): string {
    if (!dateStr) return '—';
    return new Date(dateStr).toLocaleDateString('ru-RU');
  }

  function formatPct(value: number | null | undefined): string {
    return value != null ? `${value.toFixed(2)}%` : '—';
  }

  function formatRubles(value: number | null | undefined): string {
    return value != null
      ? value.toLocaleString('ru-RU', { minimumFractionDigits: 2, maximumFractionDigits: 2 })
      : '—';
  }

  const totalAccrued = position.accruedInt != null ? position.accruedInt * position.quantity : null;

  return (
    <tr style={{ borderBottom: '1px solid #f0f0f0' }}>
      <td style={{ padding: '8px 12px', fontWeight: 600, fontFamily: 'monospace' }}>
        <Link to={`/bonds/${position.secid}`} style={{ color: 'inherit', textDecoration: 'none' }}>
          {position.secid}
        </Link>
      </td>
      <td style={{ padding: '8px 12px', color: 'var(--color-text-secondary)' }}>
        {position.shortName ?? '—'}
      </td>
      <td style={{ padding: '8px 12px', fontSize: 13, color: 'var(--color-text-secondary)' }}>
        {position.bondType ? <span>{position.bondType}</span> : '—'}
      </td>
      <td style={{ padding: '8px 12px' }}>
        {editingQty ? (
          <input
            type="number"
            min={0}
            value={qty}
            onChange={(e) => setQty(e.target.value)}
            onBlur={handleSaveQty}
            onKeyDown={(e) => e.key === 'Enter' && handleSaveQty()}
            autoFocus
            style={{
              width: 80,
              padding: '4px 8px',
              border: '1px solid var(--color-primary)',
              borderRadius: 'var(--border-radius)',
              fontSize: 14,
            }}
          />
        ) : (
          <span
            onClick={() => {
              setQty(String(position.quantity));
              setEditingQty(true);
            }}
            style={{ cursor: 'pointer', padding: '4px 0', display: 'inline-block' }}
          >
            {position.quantity.toLocaleString('ru-RU')}
          </span>
        )}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {editingPrice ? (
          <input
            type="number"
            step="0.01"
            value={price}
            onChange={(e) => setPrice(e.target.value)}
            onBlur={handleSavePrice}
            onKeyDown={(e) => e.key === 'Enter' && handleSavePrice()}
            autoFocus
            style={{
              width: 90,
              padding: '4px 8px',
              border: '1px solid var(--color-primary)',
              borderRadius: 'var(--border-radius)',
              fontSize: 14,
              textAlign: 'right',
            }}
          />
        ) : (
          <span
            onClick={() => {
              setPrice(String(position.buyPrice ?? ''));
              setEditingPrice(true);
            }}
            style={{
              cursor: 'pointer',
              padding: '4px 0',
              display: 'inline-block',
              color: position.buyPrice === null ? 'var(--color-text-secondary)' : 'inherit',
            }}
          >
            {formatPct(position.buyPrice)}
          </span>
        )}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {formatPct(position.currentPrice)}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>{formatPct(position.bid)}</td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>{formatPct(position.offer)}</td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {formatPct(position.yieldToMaturity)}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {position.duration != null ? `${position.duration.toFixed(2)}г` : '—'}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {formatRubles(position.couponValue)}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {formatPct(position.couponPercent)}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {position.couponPeriod ? `${position.couponPeriod}д` : '—'}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {totalAccrued != null
          ? totalAccrued.toLocaleString('ru-RU', {
              minimumFractionDigits: 2,
              maximumFractionDigits: 2,
            })
          : '—'}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {position.totalCost !== null
          ? position.totalCost.toLocaleString('ru-RU', {
              minimumFractionDigits: 2,
              maximumFractionDigits: 2,
            })
          : '—'}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {position.pnl !== null ? (
          <span
            style={{ color: position.pnl >= 0 ? 'var(--color-positive)' : 'var(--color-negative)' }}
          >
            {position.pnl >= 0 ? '+' : ''}
            {position.pnl.toLocaleString('ru-RU', {
              minimumFractionDigits: 2,
              maximumFractionDigits: 2,
            })}
          </span>
        ) : (
          '—'
        )}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {position.pnlPercent !== null ? (
          <span
            style={{
              color: position.pnlPercent >= 0 ? 'var(--color-positive)' : 'var(--color-negative)',
            }}
          >
            {position.pnlPercent >= 0 ? '+' : ''}
            {position.pnlPercent.toFixed(2)}%
          </span>
        ) : (
          '—'
        )}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {formatDate(position.nextCouponDate)}
      </td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>{formatDate(position.matDate)}</td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>{formatDate(position.offerDate)}</td>
      <td style={{ padding: '8px 12px', textAlign: 'right' }}>
        {position.weightPercent.toFixed(1)}%
      </td>
      <td style={{ padding: '8px 12px' }}>
        <button
          onClick={onDelete}
          style={{
            background: 'none',
            border: 'none',
            color: '#e53935',
            cursor: 'pointer',
            fontSize: 13,
            padding: 4,
          }}
          title="Удалить позицию"
        >
          ✕
        </button>
      </td>
    </tr>
  );
}