/**
 * ShippingStatusCard — optional shipping logistics for a `ships` deal.
 *
 * Self-reported (a claim, never proof): the seller marks **shipped**, the buyer
 * marks **received**, either can flag an **issue**. `p`-tagged to the
 * counterparty so the push service can notify while the app is closed. No
 * address is ever stored — only a coarse status and an optional tracking ref.
 */
import { useState } from 'react';
import { Package, PackageCheck, AlertTriangle, Loader2 } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { useCurrentUser } from '@/hooks/useCurrentUser';
import { useListingTrade } from '@/hooks/useTradeAttestations';
import { useShipmentStatus, useSetShipmentStatus } from '@/hooks/useShipmentStatus';
import { useToast } from '@/hooks/useToast';
import type { MarketplaceItem } from '@/lib/types';
import { useTranslation } from '@/contexts/language';

export function ShippingStatusCard({ item }: { item: MarketplaceItem }) {
  const { t } = useTranslation();
  const { user } = useCurrentUser();
  const { toast } = useToast();
  const listingRef = { pubkey: item.pubkey, identifier: item.identifier };
  const { data: trade } = useListingTrade(listingRef, user?.pubkey);
  const { data: statuses = [] } = useShipmentStatus(listingRef);
  const { setStatus, isPending } = useSetShipmentStatus();
  const [tracking, setTracking] = useState('');

  if (!user) return null;
  const shipping = item.fulfilment === 'ships' || item.fulfilment === 'both';
  if (!shipping) return null;

  const isSeller = user.pubkey === item.pubkey;
  // Seller → the buyer they named on their own attestation; buyer → the seller.
  const counterparty = isSeller
    ? trade?.attestations
        .find((ev) => ev.pubkey === user.pubkey)
        ?.tags.find(([t]) => t === 'p')?.[1]
    : item.pubkey;

  const shipped = statuses.some((s) => s.status === 'shipped');
  const received = statuses.some((s) => s.status === 'received');
  const issue = statuses.some((s) => s.status === 'issue');

  const mark = async (status: 'shipped' | 'received' | 'issue') => {
    if (!counterparty) {
      toast({
        title: t('marketUi.shipping.noCounterparty'),
        description: t('marketUi.shipping.noCounterpartyBody'),
        variant: 'destructive',
      });
      return;
    }
    try {
      await setStatus({ listing: listingRef, counterparty, status, ref: tracking });
      toast({
        title:
          status === 'shipped' ? t('marketUi.shipping.markedShipped') : status === 'received' ? t('marketUi.shipping.markedReceived') : t('marketUi.shipping.issueReported'),
        description:
          status === 'received'
            ? t('marketUi.shipping.receivedBody')
            : t('marketUi.shipping.notifiedBody'),
      });
    } catch (e) {
      toast({
        title: t('marketUi.shipping.updateFailed'),
        description: e instanceof Error ? e.message : t('marketUi.shipping.somethingWrong'),
        variant: 'destructive',
      });
    }
  };

  return (
    <div className="space-y-2 rounded-xl border border-white/10 bg-white/[0.03] p-3">
      <p className="flex items-center gap-2 text-xs font-bold uppercase tracking-wide text-gray-400">
        <Package className="h-3.5 w-3.5 text-[#ff6600]" /> {t('marketUi.shipping.title')}
        {shipped && <span className="text-[#ccff00]">· {t('marketUi.shipping.shipped')}</span>}
        {received && <span className="text-[#ccff00]">· {t('marketUi.shipping.received')}</span>}
        {issue && <span className="text-amber-400">· {t('marketUi.shipping.issue')}</span>}
      </p>

      <Input
        value={tracking}
        onChange={(e) => setTracking(e.target.value)}
        placeholder={t('marketUi.shipping.trackingPlaceholder')}
        className="h-9 border-white/15 bg-white/5 text-sm text-white"
      />

      <div className="flex flex-wrap gap-2">
        {isSeller && (
          <Button
            size="sm"
            onClick={() => mark('shipped')}
            disabled={isPending}
            className="gap-1.5 bg-[#ff6600] font-bold text-black hover:bg-[#ff6600]/90"
          >
            {isPending ? <Loader2 className="h-3.5 w-3.5 animate-spin" /> : <Package className="h-3.5 w-3.5" />}
            {t('marketUi.shipping.iShipped')}
          </Button>
        )}
        {!isSeller && (
          <Button
            size="sm"
            onClick={() => mark('received')}
            disabled={isPending}
            className="gap-1.5 bg-[#ccff00] font-bold text-black hover:bg-[#ccff00]/90"
          >
            {isPending ? <Loader2 className="h-3.5 w-3.5 animate-spin" /> : <PackageCheck className="h-3.5 w-3.5" />}
            {t('marketUi.shipping.iReceived')}
          </Button>
        )}
        <Button
          size="sm"
          variant="outline"
          onClick={() => mark('issue')}
          disabled={isPending}
          className="gap-1.5 border-amber-500/40 text-amber-400 hover:bg-amber-500/10"
        >
          <AlertTriangle className="h-3.5 w-3.5" /> {t('marketUi.shipping.reportIssue')}
        </Button>
      </div>

      <p className="text-[10px] leading-relaxed text-gray-600">
        {t('marketUi.shipping.noteBefore')} <strong className="text-gray-400">{t('marketUi.shipping.notProof')}</strong>{t('marketUi.shipping.noteAfter')}
      </p>
    </div>
  );
}