import { useEffect, useState } from 'react';

export const CONDITION_OPTIONS = ['NM', 'LP', 'MP', 'HP', 'DMG'];

export default function ScannedCardItem({
  card,
  collections,
  decks,
  selected,
  onToggleSelect,
  onIncrement,
  onDecrement,
  onUpdateMetadata,
  onMarkOwned,
  onAddToCollection,
  onAddToDeck,
  onRemove,
  isAdding = false,
}) {
  const [ownedQuantity, setOwnedQuantity] = useState(null);

  useEffect(() => {
    if (!card.databaseId) {
      setOwnedQuantity(null);
      return;
    }

    let cancelled = false;

    (async () => {
      try {
        const response = await fetch(`/api/cards/${card.databaseId}/ownership`, {
          headers: {
            Authorization: `Bearer ${localStorage.getItem('auth_token')}`,
          },
        });
        if (!response.ok) return;
        const data = await response.json();
        if (!cancelled) {
          setOwnedQuantity(typeof data.quantity === 'number' ? data.quantity : 0);
        }
      } catch {
        if (!cancelled) setOwnedQuantity(null);
      }
    })();

    return () => {
      cancelled = true;
    };
  }, [card.databaseId]);

  return (
    <div
      className={`flex gap-4 p-4 rounded-lg border ${card.processed ? 'opacity-60' : ''}`}
      style={{
        backgroundColor: 'var(--bg-tertiary)',
        borderColor: selected ? 'var(--accent-ember)' : 'var(--border)',
        borderWidth: selected ? '2px' : '1px',
      }}
    >
      <div className="relative flex-shrink-0">
        <div className="w-20 h-28 rounded-lg overflow-hidden flex items-center justify-center"
             style={{ backgroundColor: 'var(--bg-secondary)' }}>
          {card.image_url ? (
            <img src={card.image_url} alt={card.name} className="w-full h-full object-cover" />
          ) : (
            <div className="text-center text-xs p-2" style={{ color: 'var(--text-secondary)' }}>
              <div className="text-2xl mb-1">🃏</div>
              <div>No Image</div>
            </div>
          )}
        </div>

        {!card.processed && (
          <div className="absolute top-1 left-1">
            <input
              type="checkbox"
              checked={selected}
              onChange={onToggleSelect}
              className="w-5 h-5 rounded border-2 border-white shadow-lg"
              style={{ accentColor: 'var(--accent-ember)' }}
              aria-label={`Select ${card.name}`}
            />
          </div>
        )}
      </div>

      <div className="flex-1 min-w-0">
        {card.confidence && (
          <div
            className="inline-flex items-center px-2 py-1 rounded-full text-xs font-medium mb-2"
            style={{
              backgroundColor:
                card.confidence >= 90
                  ? 'var(--accent-gold)'
                  : card.confidence >= 70
                    ? 'var(--accent-ember)'
                    : 'var(--text-secondary)',
              color: 'white',
            }}
          >
            {Math.round(card.confidence)}% confidence
          </div>
        )}

        <div className="flex items-start justify-between mb-2 gap-4">
          <div className="flex-1 min-w-0">
            <h3 className="font-semibold text-lg truncate" style={{ color: 'var(--text-primary)' }}>
              {card.name}
            </h3>
            {card.isExisting && (
              <div className="text-xs font-medium" style={{ color: 'var(--accent-gold)' }}>
                <span aria-hidden="true">✅ </span>
                <span>Found in database</span>
              </div>
            )}
            {ownedQuantity !== null && ownedQuantity > 0 && (
              <div
                role="status"
                className="text-xs font-medium mt-1"
                style={{ color: 'var(--text-secondary)' }}
                aria-label={`You already own ${ownedQuantity} copies of this card`}
              >
                You own {ownedQuantity}
              </div>
            )}
          </div>

          {!card.processed && (
            <div className="flex items-center gap-2 flex-shrink-0">
              <button
                type="button"
                onClick={onDecrement}
                className="w-8 h-8 rounded-full flex items-center justify-center text-sm font-bold hover:opacity-80"
                style={{
                  backgroundColor: 'var(--bg-secondary)',
                  color: 'var(--text-primary)',
                  border: '1px solid var(--border)',
                }}
                aria-label="Decrease quantity"
              >
                −
              </button>
              <span className="min-w-[2rem] text-center font-medium" style={{ color: 'var(--text-primary)' }}>
                {card.quantity || 1}
              </span>
              <button
                type="button"
                onClick={onIncrement}
                className="w-8 h-8 rounded-full flex items-center justify-center text-sm font-bold hover:opacity-80"
                style={{ backgroundColor: 'var(--accent-ember)', color: 'white' }}
                aria-label="Increase quantity"
              >
                +
              </button>
            </div>
          )}
        </div>

        {!card.processed && (
          <div className="flex flex-wrap items-center gap-3 mb-3">
            <label className="flex items-center gap-2 text-sm" style={{ color: 'var(--text-secondary)' }}>
              <span>Condition</span>
              <select
                value={card.condition || 'NM'}
                onChange={(e) => onUpdateMetadata({ condition: e.target.value })}
                className="px-2 py-1 rounded border text-sm"
                style={{
                  backgroundColor: 'var(--bg-secondary)',
                  borderColor: 'var(--border)',
                  color: 'var(--text-primary)',
                }}
              >
                {CONDITION_OPTIONS.map((option) => (
                  <option key={option} value={option}>
                    {option}
                  </option>
                ))}
              </select>
            </label>
            <label className="flex items-center gap-2 text-sm cursor-pointer" style={{ color: 'var(--text-secondary)' }}>
              <input
                type="checkbox"
                checked={Boolean(card.isFoil)}
                onChange={(e) => onUpdateMetadata({ isFoil: e.target.checked })}
                className="rounded"
                style={{ accentColor: 'var(--accent-ember)' }}
              />
              Foil
            </label>
          </div>
        )}

        <div className="space-y-1 mb-3">
          {card.set && (
            <div className="text-sm font-medium" style={{ color: 'var(--text-secondary)' }}>
              <span className="font-semibold">Set:</span> {card.set}
              {card.setCode && <span className="ml-2 text-xs">({card.setCode})</span>}
            </div>
          )}
          {card.cardNumber && (
            <div className="text-sm" style={{ color: 'var(--text-secondary)' }}>
              <span className="font-semibold">Number:</span> {card.cardNumber}
            </div>
          )}
          {!card.processed && (card.condition || card.isFoil) && (
            <div className="text-sm" style={{ color: 'var(--text-secondary)' }}>
              <span className="font-semibold">Adding as:</span>{' '}
              {card.condition || 'NM'}
              {card.isFoil ? ' · Foil' : ''}
            </div>
          )}
        </div>

        {!card.processed ? (
          <div className="space-y-2">
            <div className="flex gap-2">
              <button
                type="button"
                onClick={onMarkOwned}
                disabled={isAdding}
                className="flex-1 px-3 py-2 rounded text-sm font-medium hover:opacity-80 flex items-center justify-center gap-1 disabled:opacity-50 disabled:cursor-not-allowed"
                style={{ backgroundColor: 'var(--accent-gold)', color: 'white' }}
              >
                <span aria-hidden="true">💎 </span>
                {isAdding ? 'Adding…' : 'Mark Owned'}
              </button>
              <button
                type="button"
                onClick={onRemove}
                className="px-3 py-2 rounded text-sm hover:opacity-80"
                style={{ color: 'var(--text-secondary)', backgroundColor: 'var(--bg-secondary)' }}
                aria-label={`Remove ${card.name} from scan queue`}
              >
                <span aria-hidden="true">🗑️</span>
              </button>
            </div>

            <div className="flex gap-2">
              {collections.length > 0 && (
                <select
                  onChange={(e) => {
                    const value = e.target.value;
                    e.target.value = '';
                    if (value) onAddToCollection(value);
                  }}
                  className="flex-1 px-3 py-2 rounded text-sm"
                  style={{
                    backgroundColor: 'var(--bg-secondary)',
                    color: 'var(--text-primary)',
                    border: '1px solid var(--border)',
                  }}
                  defaultValue=""
                  aria-label={`Add ${card.name} to a collection`}
                >
                  <option value="">📚 Add to Collection</option>
                  {collections.map((collection) => (
                    <option key={collection.id} value={collection.id}>
                      {collection.name}
                    </option>
                  ))}
                </select>
              )}

              {decks.length > 0 && (
                <select
                  onChange={(e) => {
                    const value = e.target.value;
                    e.target.value = '';
                    if (value) onAddToDeck(value);
                  }}
                  className="flex-1 px-3 py-2 rounded text-sm"
                  style={{
                    backgroundColor: 'var(--bg-secondary)',
                    color: 'var(--text-primary)',
                    border: '1px solid var(--border)',
                  }}
                  defaultValue=""
                  aria-label={`Add ${card.name} to a deck`}
                >
                  <option value="">🃏 Add to Deck</option>
                  {decks.map((deck) => (
                    <option key={deck.id} value={deck.id}>
                      {deck.name}
                    </option>
                  ))}
                </select>
              )}
            </div>
          </div>
        ) : (
          <div className="text-sm flex items-center gap-2" style={{ color: 'var(--accent-ember)' }}>
            <span aria-hidden="true">✅</span>
            <span>Added to {card.processedAction}</span>
          </div>
        )}
      </div>
    </div>
  );
}