Order detail

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// oxlint-disable-next-line typescript/require-await -- a Server Action must be async, and refresh() returns nothing to await
async function retry() {
  "use server";
  refresh();
}

/**
 * Render inside `<Suspense>`: a placed order, or the caller's draft (an open
 * cart) with the same id, with its lines, totals and next steps.
 */
export async function OrderDetail({
  params,
}: {
  params: Promise<{ id: string }>;
}) {
  const [{ id }, session] = await Promise.all([params, getSession()]);

  if (!can(session, "orders.read")) {
    forbidden();
  }

  const [detail, t, format, locale] = await Promise.all([
    getOrderDetail(id),
    getExtracted("shop"),
    getFormatter(),
    getLocale(),
  ]);

  if (detail.kind === "not-found") {
    notFound();
  }

  if (detail.kind === "error") {
    return (
      <Alert variant="destructive" data-recipe="order-detail">
        <TriangleAlertIcon />
        <AlertTitle>{t("The order didn't load")}</AlertTitle>
        <AlertDescription>{t("Try again in a moment.")}</AlertDescription>
        <AlertAction>
          <form action={retry}>
            <Button size="sm" variant="outline" type="submit">
              {t("Retry")}
            </Button>
          </form>
        </AlertAction>
      </Alert>
    );
  }

  const view = detail.data;
  const canManage = can(session, "orders.manage");
  const amount = (value: Money) => formatMoney(value, locale);

  const problemLabel = (problem: string) => {
    switch (problem) {
      case "shipping_required": {
        return t("Pick a shipping rate first.");
      }

      case "shipping_unavailable": {
        return t("No shipping rate covers this address.");
      }

      case "promotion_unavailable": {
        return t("A promotion code no longer applies.");
      }

      default: {
        return problem;
      }
    }
  };

  const totals: readonly (readonly [string, Money])[] = [
    [t("Subtotal"), view.subtotal],
    ...(view.discountTotal.amount > 0n
      ? [[t("Discount"), negateMoney(view.discountTotal)] as const]
      : []),
    ...(view.shippingTotal.amount > 0n
      ? [[t("Shipping"), view.shippingTotal] as const]
      : []),
    ...(view.kind === "order" && view.taxTotal.amount > 0n
      ? [[t("Tax"), view.taxTotal] as const]
      : []),
  ];

  return (
    <div data-recipe="order-detail" className="grid gap-6 lg:grid-cols-3">
      <div className="flex flex-col gap-6 lg:col-span-2">
        <div className="flex flex-col gap-1">
          <div className="flex items-center gap-2">
            <h1 className="text-2xl font-semibold tracking-tight">
              {view.kind === "order"
                ? t("Order {number}", { number: view.number })
                : t("Draft order")}
            </h1>
            <OrderStatusBadge
              status={view.kind === "order" ? view.status : "draft"}
            />
          </div>
          <p className="text-sm text-muted-foreground">
            {view.kind === "order"
              ? t("Placed {date}", {
                  date: format.dateTime(new Date(view.placedAt), {
                    dateStyle: "medium",
                    timeStyle: "short",
                  }),
                })
              : t(
                  "Not placed yet. Prices follow the catalog until you place it.",
                )}
          </p>
        </div>
        <Card>
          <CardHeader>
            <CardTitle>{t("Lines")}</CardTitle>
          </CardHeader>
          <CardContent>
            {view.lines.length === 0 ? (
              <Empty className="border">
                <EmptyHeader>
                  <EmptyMedia variant="icon">
                    <ShoppingCartIcon />
                  </EmptyMedia>
                  <EmptyTitle>{t("This draft is empty")}</EmptyTitle>
                  <EmptyDescription>
                    {t("Add a product from the orders page.")}
                  </EmptyDescription>
                </EmptyHeader>
              </Empty>
            ) : (
              <Table>
                <TableHeader>
                  <TableRow>
                    <TableHead>{t("Product")}</TableHead>
                    <TableHead className="text-right">
                      {t("Quantity")}
                    </TableHead>
                    <TableHead className="text-right">
                      {t("Unit price")}
                    </TableHead>
                    <TableHead className="text-right">{t("Total")}</TableHead>
                  </TableRow>
                </TableHeader>
                <TableBody>
                  {view.lines.map((line) => (
                    <TableRow key={line.id}>
                      <TableCell>
                        <div className="flex flex-col gap-1">
                          <span className="text-sm">{line.title}</span>
                          <span className="font-mono text-xs text-muted-foreground">
                            {line.sku}
                          </span>
                        </div>
                      </TableCell>
                      <TableCell className="text-right tabular-nums">
                        {line.quantity}
                      </TableCell>
                      <TableCell className="text-right tabular-nums">
                        {amount(line.unitAmount)}
                      </TableCell>
                      <TableCell className="text-right tabular-nums">
                        {amount(line.total)}
                      </TableCell>
                    </TableRow>
                  ))}
                </TableBody>
                <TableFooter>
                  {totals.map(([label, value]) => (
                    <TableRow key={label}>
                      <TableCell colSpan={3} className="text-muted-foreground">
                        {label}
                      </TableCell>
                      <TableCell className="text-right tabular-nums">
                        {amount(value)}
                      </TableCell>
                    </TableRow>
                  ))}
                  <TableRow>
                    <TableCell colSpan={3} className="font-medium">
                      {t("Total")}
                    </TableCell>
                    <TableCell className="text-right font-medium tabular-nums">
                      {amount(view.total)}
                    </TableCell>
                  </TableRow>
                  {view.kind === "order" ? (
                    <TableRow>
                      <TableCell colSpan={3} className="text-muted-foreground">
                        {t("Paid")}
                      </TableCell>
                      <TableCell className="text-right tabular-nums">
                        {amount(view.paidTotal)}
                      </TableCell>
                    </TableRow>
                  ) : null}
                </TableFooter>
              </Table>
            )}
          </CardContent>
        </Card>
      </div>
      <div className="flex flex-col gap-6">
        <Card>
          <CardHeader>
            <CardTitle>{t("Next step")}</CardTitle>
            <CardDescription>
              {view.kind === "draft"
                ? t(
                    "Placing the order reserves its stock and fixes its prices.",
                  )
                : t("Without a payments provider, record the payment by hand.")}
            </CardDescription>
          </CardHeader>
          <CardContent className="flex flex-col gap-3">
            {view.kind === "draft" && view.problems.length > 0 ? (
              <Alert variant="warning">
                <TriangleAlertIcon />
                <AlertTitle>
                  {t("Check this draft before placing it")}
                </AlertTitle>
                <AlertDescription>
                  {view.problems.map(problemLabel).join(" ")}
                </AlertDescription>
              </Alert>
            ) : null}
            {canManage ? (
              view.kind === "draft" ? (
                <PlaceOrderButton
                  cartId={view.id}
                  disabled={view.lines.length === 0}
                />
              ) : (
                <OrderTransitions
                  orderId={view.id}
                  status={view.status}
                  fulfillments={view.fulfillments}
                />
              )
            ) : (
              <p className="text-sm text-muted-foreground">
                {t("Ask an admin to move this order along.")}
              </p>
            )}
            {view.kind === "order" && view.fulfillments.length > 0 ? (
              <ul className="flex flex-col gap-2">
                {view.fulfillments.map((fulfillment, index) => (
                  <li
                    key={fulfillment.id}
                    className="flex items-center justify-between gap-2 text-sm"
                  >
                    <span>{t("Shipment {n, number}", { n: index + 1 })}</span>
                    {fulfillment.status === "delivered" ? (
                      <Badge variant="success-light">{t("Delivered")}</Badge>
                    ) : fulfillment.status === "shipped" ? (
                      <Badge variant="info-light">{t("Shipped")}</Badge>
                    ) : fulfillment.status === "cancelled" ? (
                      <Badge variant="destructive-light">
                        {t("Cancelled")}
                      </Badge>
                    ) : (
                      <Badge variant="secondary">{t("Packing")}</Badge>
                    )}
                  </li>
                ))}
              </ul>
            ) : null}
          </CardContent>
        </Card>
        <Card>
          <CardHeader>
            <CardTitle>{t("Promotions")}</CardTitle>
          </CardHeader>
          <CardContent>
            {view.kind === "draft" && canManage ? (
              <PromotionCodeField
                cartId={view.id}
                applied={view.promotions.flatMap((promotion) =>
                  promotion.code
                    ? [
                        {
                          code: promotion.code,
                          name: promotion.name,
                          discount: promotion.discount,
                        },
                      ]
                    : [],
                )}
                canCreate={can(session, "promotions.manage")}
              />
            ) : view.promotions.length === 0 ? (
              <p className="text-sm text-muted-foreground">
                {t("No promotion was applied.")}
              </p>
            ) : (
              <ul className="flex flex-col gap-2">
                {view.promotions.map((promotion) => (
                  <li
                    key={promotion.code ?? promotion.name}
                    className="flex items-center justify-between gap-2 text-sm"
                  >
                    <span className="flex items-center gap-2">
                      {promotion.code ? (
                        <Badge variant="success-light" className="font-mono">
                          {promotion.code}
                        </Badge>
                      ) : null}
                      <span className="text-muted-foreground">
                        {promotion.name}
                      </span>
                    </span>
                    <span className="tabular-nums">
                      {amount(negateMoney(promotion.discount))}
                    </span>
                  </li>
                ))}
              </ul>
            )}
          </CardContent>
        </Card>
      </div>
    </div>
  );
}