import type { Metadata } from "next";
import { redirect } from "next/navigation";
import Link from "next/link";
import { Container, SectionHeading, LinkButton } from "@/components/ui";
import { BackLink } from "@/components/back-link";
import { ReorderButton } from "@/components/reorder-button";
import { AccountEmptyState, OrderStatusBadge, OrderStatusTimeline, OrderIcon } from "@/components/account-ui";
import { getCurrentCustomer } from "@/lib/auth";
import { getOrdersForCustomer } from "@/lib/account-data";
import { formatPrice, formatDate } from "@/lib/format";
import { getCarrierTrackingUrl } from "@/lib/shipment-tracking";
import { getLocale } from "@/i18n/locale";
import { getDictionary } from "@/i18n/get-dictionary";

export const metadata: Metadata = { title: "Meine Bestellungen" };
export const dynamic = "force-dynamic";

// Deckt sich mit RETURN_ELIGIBLE_STATUSES in bestellungen/actions.ts.
const RETURN_ELIGIBLE_STATUSES = [
  "BEZAHLT",
  "IN_VORBEREITUNG",
  "VERSANDBEREIT",
  "VERSENDET",
  "ABHOLBEREIT",
  "ABGEHOLT",
];

export default async function KontoBestellungenPage() {
  const locale = await getLocale();
  const t = getDictionary(locale);
  const statusLabels = t.orderStatusBadge;
  const returnStatusLabels = t.ordersPage.returnStatusLabels;
  const customer = await getCurrentCustomer();
  if (!customer) redirect("/konto");

  const orders = await getOrdersForCustomer(customer.id);

  return (
    <div className="py-20">
      <Container className="max-w-3xl">
        <BackLink href="/konto" label={t.ordersPage.backToAccount} />
        <SectionHeading eyebrow={t.account.eyebrow} title={t.ordersPage.title} />


        {orders.length === 0 ? (
          <AccountEmptyState
            icon={<OrderIcon />}
            title={t.ordersPage.emptyTitle}
            description={t.ordersPage.emptyDescription}
            action={<LinkButton href="/shop">{t.cartPage.goToShop}</LinkButton>}
          />
        ) : (
          <div className="mt-10 space-y-6">
            {orders.map((order) => (
              <div
                key={order.id}
                className="border border-ink/10 p-6 transition-colors hover:border-ink/25"
              >
                <div className="flex flex-wrap items-center justify-between gap-2">
                  <div>
                    <p className="text-forest">{order.orderNumber}</p>
                    <p className="text-xs text-ink/65">{formatDate(order.createdAt, locale)}</p>
                  </div>
                  <div className="text-right">
                    <OrderStatusBadge status={order.status} label={statusLabels[order.status] ?? order.status} />
                    <p className="mt-1.5 text-xs text-ink/65">
                      {order.fulfillmentMethod === "VERSAND"
                        ? order.shipment?.shippedAt
                          ? t.ordersPage.shippedOn(formatDate(order.shipment.shippedAt, locale))
                          : t.ordersPage.shippingPending
                        : order.pickup?.pickedUpAt
                          ? t.ordersPage.pickedUpOn(formatDate(order.pickup.pickedUpAt, locale))
                          : order.pickup?.readyAt
                            ? t.ordersPage.readySince(formatDate(order.pickup.readyAt, locale))
                            : t.ordersPage.pickupPending}
                    </p>
                  </div>
                </div>

                <ul className="mt-4 text-sm text-ink/70 space-y-1">
                  {order.items.map((item) => (
                    <li key={item.id}>
                      {item.quantity} ×{" "}
                      <Link href={`/honig/${item.product.slug}#bewertungen`} className="hover:text-forest hover:underline">
                        {item.productName}
                      </Link>
                    </li>
                  ))}
                </ul>

                <div className="mt-5 max-w-md">
                  <OrderStatusTimeline
                    status={order.status}
                    fulfillmentMethod={order.fulfillmentMethod}
                    labels={{
                      ordered: t.orderStatusTimeline.ordered,
                      paid: t.orderStatusTimeline.paid,
                      preparing: t.orderStatusTimeline.preparing,
                      readyToShip: t.orderStatusTimeline.readyToShip,
                      shipped: t.orderStatusTimeline.shipped,
                      readyForPickup: t.orderStatusTimeline.readyForPickup,
                      pickedUp: t.orderStatusTimeline.pickedUp,
                      cancelled: t.orderStatusTimeline.cancelled,
                      ariaLabel: t.orderStatusTimeline.ariaLabel,
                    }}
                  />
                </div>

                {order.shipment?.carrier && order.shipment.trackingNumber ? (
                  <p className="mt-3 text-xs text-ink/65">
                    {t.shipmentInfo.carrierLabel}: {order.shipment.carrier} · {t.shipmentInfo.trackingNumberLabel}:{" "}
                    {order.shipment.trackingNumber}
                    {(() => {
                      const url = getCarrierTrackingUrl(order.shipment.carrier, order.shipment.trackingNumber);
                      return url ? (
                        <>
                          {" "}
                          ·{" "}
                          <a href={url} target="_blank" rel="noopener noreferrer" className="text-forest underline">
                            {t.shipmentInfo.trackPackage}
                          </a>
                        </>
                      ) : null;
                    })()}
                  </p>
                ) : null}

                {order.giftMessage ? (
                  <p className="mt-3 text-xs text-ink/65 bg-honey/10 border border-honey-dark/20 px-3 py-2">
                    🎁 {t.ordersPage.giftMessagePrefix} „{order.giftMessage}“
                  </p>
                ) : null}

                <div className="mt-4 flex flex-wrap items-center justify-between gap-4">
                  <p className="font-serif text-2xl text-forest tabular-nums">{formatPrice(order.totalCents, order.currency, locale)}</p>
                  <div className="flex items-center gap-3">
                    {order.invoice ? (
                      <Link
                        href={`/rechnung/${order.invoice.invoiceNumber}`}
                        className="text-sm text-forest underline"
                      >
                        {t.ordersPage.viewInvoice}
                      </Link>
                    ) : null}
                    {order.returnRequest ? (
                      <span className="text-sm text-ink/65">
                        {returnStatusLabels[order.returnRequest.status] ?? order.returnRequest.status}
                      </span>
                    ) : RETURN_ELIGIBLE_STATUSES.includes(order.status) ? (
                      <Link
                        href={`/konto/bestellungen/${order.id}/retoure`}
                        className="text-sm text-forest underline"
                      >
                        {t.ordersPage.requestReturn}
                      </Link>
                    ) : null}
                    <ReorderButton
                      items={order.items.map((item) => ({
                        productId: item.productId,
                        slug: item.product.slug,
                        name: item.productName,
                        weightGrams: item.weightGrams,
                        priceCents: item.unitPriceCents,
                        quantity: item.quantity,
                      }))}
                    />
                  </div>
                </div>
              </div>
            ))}
          </div>
        )}
      </Container>
    </div>
  );
}