// Pieces shared by the product pages.
import Link from "next/link";
import { Tag } from "@/components/status";
import { Card, CardContent } from "@/components/ui/card";
import type { ProductSummary } from "@/lib/api";

export function RatingTag({ rating }: { rating: string }) {
  return rating === "adult" ? <Tag tone="adult">Adult</Tag> : null;
}

/** A product's state, where it isn't plainly published and listed: draft, unlisted, deleted, removed, locked. */
export function StateTags({
  product: p,
}: {
  product: Pick<ProductSummary, "status" | "listed" | "deleted" | "removed" | "locked">;
}) {
  return (
    <>
      {p.status === "draft" && <Tag tone="strong">Draft</Tag>}
      {p.status === "published" && !p.listed && <Tag>Unlisted</Tag>}
      {p.deleted && <Tag tone="danger">Deleted</Tag>}
      {p.removed && <Tag tone="danger">Removed</Tag>}
      {p.locked.length > 0 && <Tag>Locked: {p.locked.join(", ")}</Tag>}
    </>
  );
}

/** 1536 → "1.5 KB". */
export function formatSize(bytes: number): string {
  if (bytes < 1024) return `${bytes} B`;
  const units = ["KB", "MB", "GB"];
  let n = bytes / 1024;
  let i = 0;
  while (n >= 1024 && i < units.length - 1) {
    n /= 1024;
    i++;
  }
  return `${n < 10 ? n.toFixed(1) : Math.round(n)} ${units[i]}`;
}

/** The image of the IMVU product a product derives from (IMVU's, from IMVU), if it has one. */
export function ProductImage({ src, className }: { src: string | null | undefined; className?: string }) {
  if (!src) return null;
  return (
    <img
      src={src}
      alt=""
      referrerPolicy="no-referrer"
      loading="lazy"
      className={`aspect-[5/4] w-full bg-muted object-contain ${className ?? ""}`}
    />
  );
}

export function ProductCard({
  product,
  children,
}: {
  product: Pick<ProductSummary, "id" | "name" | "creator" | "rating" | "latest" | "image" | "categories" | "listed">;
  children?: React.ReactNode;
}) {
  const category = product.categories.at(-1)?.name;
  return (
    <Card className="h-full">
      <ProductImage src={product.image} />
      <CardContent className="space-y-2">
        <div className="flex items-start justify-between gap-2">
          <Link href={`/products/${product.id}`} className="font-medium underline-offset-4 hover:underline">
            {product.name}
          </Link>
          <span className="flex gap-1">
            {!product.listed && <Tag>Unlisted</Tag>}
            <RatingTag rating={product.rating} />
          </span>
        </div>
        <p className="text-xs text-muted-foreground">
          {[product.creator && `by ${product.creator}`, category, `revision ${product.latest}`].filter(Boolean).join(" · ")}
        </p>
        {children}
      </CardContent>
    </Card>
  );
}

export function Empty({ children }: { children: React.ReactNode }) {
  return (
    <Card>
      <CardContent>
        <p className="py-6 text-sm text-muted-foreground">{children}</p>
      </CardContent>
    </Card>
  );
}