import { NextResponse } from "next/server";
import { readEntity, classKeyToFolder, type EntityClass } from "@/lib/wiki";

export async function GET(_req: Request, ctx: { params: Promise<{ cls: string; id: string }> }) {
  const { cls, id } = await ctx.params;
  const folder = classKeyToFolder(cls);
  if (!folder) return NextResponse.json({ error: "invalid_class" }, { status: 400 });
  const md = await readEntity(folder as EntityClass, id);
  if (!md) return NextResponse.json({ error: "not_found" }, { status: 404 });
  return NextResponse.json({
    entity_id: id,
    class: folder,
    frontmatter: md.fm,
    body: md.body,
  });
}