import { useEffect, useState } from 'react';
import GlassSurface from '../ui/GlassSurface.js';

const PEEK_DURATION_MS = 3000;

function formatConfidence(confidence) {
  if (confidence == null || Number.isNaN(confidence)) return null;
  const pct = confidence <= 1 ? Math.round(confidence * 100) : Math.round(confidence);
  return `${pct}%`;
}

export default function ScannerScanPeek({ card, onOpenCheckout = () => {} }) {
  const [visible, setVisible] = useState(true);

  useEffect(() => {
    const timerId = window.setTimeout(() => {
      setVisible(false);
    }, PEEK_DURATION_MS);
    return () => window.clearTimeout(timerId);
  }, []);

  if (!card || !visible) return null;

  const cardName = card.name || card.card?.name || 'Card';
  const thumbnail =
    card.image_url ||
    card.scanImageUrl ||
    card.card?.image_url ||
    null;
  const confidenceLabel = formatConfidence(card.confidence);

  return (
    <div
      className="absolute left-4 right-4 z-20 pointer-events-none"
      style={{
        bottom: 'calc(5.5rem + env(safe-area-inset-bottom, 0px))',
        opacity: visible ? 1 : 0,
        transform: `translateY(${visible ? '0' : '12px'})`,
        transition: 'opacity 150ms ease, transform 150ms ease',
      }}
    >
      <button
        type="button"
        onClick={onOpenCheckout}
        className="w-full pointer-events-auto text-left focus:outline-none focus-visible:ring-2 focus-visible:ring-offset-2 rounded-2xl"
        style={{
          '--tw-ring-color': 'var(--accent-ember)',
          '--tw-ring-offset-color': 'transparent',
        }}
        aria-label={`Open cart to review ${cardName}`}
      >
        <GlassSurface
          tint="mid"
          rim="subtle"
          blur="mid"
          className="flex items-center gap-3 rounded-2xl px-3 py-2.5"
        >
          {thumbnail ? (
            // eslint-disable-next-line @next/next/no-img-element -- ephemeral scan thumbnail blob/url
            <img
              src={thumbnail}
              alt=""
              className="w-12 h-[4.25rem] object-cover rounded-md flex-shrink-0"
              style={{ border: '1px solid var(--border)' }}
            />
          ) : (
            <div
              className="w-12 h-[4.25rem] rounded-md flex-shrink-0 flex items-center justify-center text-xs font-medium"
              style={{
                backgroundColor: 'var(--bg-tertiary)',
                color: 'var(--text-secondary)',
                border: '1px solid var(--border)',
              }}
              aria-hidden="true"
            >
              ?
            </div>
          )}

          <div className="flex-1 min-w-0">
            <p
              className="text-sm font-semibold truncate"
              style={{ color: 'var(--text-primary)' }}
            >
              {cardName}
            </p>
            {confidenceLabel && (
              <p className="text-xs mt-0.5" style={{ color: 'var(--text-secondary)' }}>
                {confidenceLabel} match
              </p>
            )}
          </div>
        </GlassSurface>
      </button>
    </div>
  );
}