import type { MetadataRoute } from "next";

import { prisma } from "@/lib/prisma";
import { CarbetStatus } from "@/generated/prisma/enums";

const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || "http://localhost:3000";

function abs(path: string): string {
  return `${siteUrl.replace(/\/+$/, "")}${path}`;
}

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const staticRoutes: MetadataRoute.Sitemap = [
    { url: abs("/"), changeFrequency: "weekly", priority: 1 },
    { url: abs("/carbets"), changeFrequency: "daily", priority: 0.9 },
    { url: abs("/cgv"), changeFrequency: "yearly", priority: 0.2 },
    { url: abs("/mentions-legales"), changeFrequency: "yearly", priority: 0.2 },
    {
      url: abs("/politique-de-confidentialite"),
      changeFrequency: "yearly",
      priority: 0.2,
    },
  ];

  const carbets = await prisma.carbet.findMany({
    where: { status: CarbetStatus.PUBLISHED },
    select: { slug: true, updatedAt: true },
  });

  const carbetRoutes: MetadataRoute.Sitemap = carbets.map((carbet) => ({
    url: abs(`/carbets/${carbet.slug}`),
    lastModified: carbet.updatedAt,
    changeFrequency: "weekly",
    priority: 0.7,
  }));

  return [...staticRoutes, ...carbetRoutes];
}