import type { MetadataRoute } from "next";
import { prisma } from "@/lib/prisma";
import { absoluteUrl } from "@/lib/site";

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const trips = await prisma.trip.findMany({
    where: { status: { in: ["OPEN", "FULL"] } },
    select: { id: true, updatedAt: true },
    orderBy: { updatedAt: "desc" },
  });

  const now = new Date();

  const staticEntries: MetadataRoute.Sitemap = [
    {
      url: absoluteUrl("/"),
      lastModified: now,
      changeFrequency: "daily",
      priority: 1,
    },
    {
      url: absoluteUrl("/trips"),
      lastModified: now,
      changeFrequency: "hourly",
      priority: 0.9,
    },
    {
      url: absoluteUrl("/register"),
      lastModified: now,
      changeFrequency: "yearly",
      priority: 0.3,
    },
  ];

  const tripEntries: MetadataRoute.Sitemap = trips.map((t) => ({
    url: absoluteUrl(`/trips/${t.id}`),
    lastModified: t.updatedAt,
    changeFrequency: "daily",
    priority: 0.8,
  }));

  return [...staticEntries, ...tripEntries];
}