import { allPublishedForFeeds, listSeries, listTopics } from "@autoscholar/core";
import type { MetadataRoute } from "next";
import { db } from "@/lib/server/db";

export const dynamic = "force-dynamic";

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const base = process.env.APP_BASE_URL ?? "http://localhost:8470";
  if (process.env.STAGING_MODE === "1") return [];
  const d = db();
  const statics = [
    "",
    "/research",
    "/topics",
    "/series",
    "/about",
    "/methodology",
    "/infrastructure",
    "/transparency",
    "/legal/privacy",
    "/legal/terms",
    "/legal/research-disclaimer",
  ].map((p) => ({ url: `${base}${p}`, changeFrequency: "weekly" as const, priority: p === "" ? 1 : 0.6 }));
  const papers = (await allPublishedForFeeds(d, 5000)).map((r) => ({
    url: `${base}/research/${r.p.slug}`,
    lastModified: r.p.updatedAt,
    changeFrequency: "monthly" as const,
    priority: 0.8,
  }));
  const topics = (await listTopics(d)).map((t) => ({
    url: `${base}/topics/${t.slug}`,
    changeFrequency: "weekly" as const,
    priority: 0.5,
  }));
  const series = (await listSeries(d))
    .map(() => ({ url: `${base}/series`, changeFrequency: "weekly" as const, priority: 0.4 }))
    .slice(0, 1);
  return [...statics, ...papers, ...topics, ...series];
}