import { defineConfig } from "astro/config";
import starlight from "@astrojs/starlight";

// The site is served at the root of its own subdomain. Set COURSE_HOST at build time
// (e.g. COURSE_HOST=course.example.com); the default is a placeholder.
const host = process.env.COURSE_HOST ?? "course.example.com";

export default defineConfig({
  site: `https://${host}`,
  base: "/",
  integrations: [
    starlight({
      title: "Systemic Design Course",
      description: "A free, hands-on course on extensible systemic game design, in Rust and TypeScript.",
      social: [
        {
          icon: "external",
          label: "Source repository",
          href: "https://gitea.lucaswinther.info/lucasw89/systemic-game-design-course",
        },
      ],
      sidebar: [
        { label: "Start here", items: ["disclaimer", "about"] },
        { label: "Modules", autogenerate: { directory: "course" } },
      ],
    }),
  ],
});