// @ts-check
import { defineConfig } from "astro/config";
import mdx from "@astrojs/mdx";
import sitemap from "@astrojs/sitemap";

import rehypeSlug from "rehype-slug";
import rehypeAutolinkHeadings from "rehype-autolink-headings";
import rehypeParagraphIds from "./src/plugins/rehype-paragraph-ids.js";

export default defineConfig({
  output: "static",
  trailingSlash: "always",

  // URL finale (utilisée pour sitemap + canoniques)
  // Astro charge .env.production automatiquement en mode build.
  site: process.env.PUBLIC_SITE ?? "http://localhost:4321",

  integrations: [
    mdx(),
    sitemap({
      // Évite d’indexer les endpoints techniques
      filter: (page) => !page.includes("/api/") && !page.endsWith("/robots.txt"),
    }),
  ],

  markdown: {
    rehypePlugins: [
      rehypeSlug,
      [rehypeAutolinkHeadings, { behavior: "append" }],
      rehypeParagraphIds,
    ],
  },
});