import type { ActionFunctionArgs } from "react-router";
import { createArtist, getIpAddress, listArtists, toSlug } from "~/lib/db.server";

export function loader() {
  return Response.json(listArtists());
}

export async function action({ request }: ActionFunctionArgs) {
  if (request.method !== "POST") {
    return Response.json({ error: "Method not allowed" }, { status: 405 });
  }

  let body: Record<string, unknown>;
  try {
    body = await request.json();
  } catch {
    return Response.json({ error: "Invalid JSON body" }, { status: 400 });
  }

  const name = (body.name as string | undefined)?.trim();
  if (!name) return Response.json({ error: "name is required" }, { status: 400 });

  const slug = (body.slug as string | undefined)?.trim() || toSlug(name);
  if (!slug) return Response.json({ error: "could not derive slug from name" }, { status: 400 });

  const id = crypto.randomUUID();
  try {
    const artist = createArtist({
      id,
      slug,
      name,
      links: (body.links as { label: string; url: string }[]) || [],
      message: (body.message as string) || "API import",
      ip_address: getIpAddress(request),
    });
    return Response.json(artist, { status: 201 });
  } catch (e) {
    if (e instanceof Error && e.message.includes("UNIQUE constraint failed: artists.slug")) {
      return Response.json({ error: "slug already in use" }, { status: 409 });
    }
    throw e;
  }
}

export default function () {
  return null;
}
