import { readFileSync } from "node:fs";
import { join } from "node:path";
import { defineConfig } from "vite";

export default defineConfig({
  base: "/account/",
  build: {
    target: "es2023",
    modulePreload: { polyfill: false },
  },
  plugins: [{
    name: "runtime-licenses",
    generateBundle() {
      const packages = new Map<string, string>();
      for (const id of this.getModuleIds()) {
        const root = id.match(/(.*\/node_modules\/(?:@[^/]+\/)?[^/]+)/)?.[1];
        if (root) {
          const pkg = JSON.parse(readFileSync(join(root, "package.json"), "utf8")) as { name: string; version: string };
          packages.set(`${pkg.name}@${pkg.version}`, root);
        }
      }
      const notices = [...packages].sort(([left], [right]) => left.localeCompare(right))
        .map(([name, root]) => `${name}\n\n${readFileSync(join(root, "LICENSE"), "utf8")}`);
      this.emitFile({ type: "asset", fileName: "licenses.txt", source: notices.join("\n\n") });
    },
  }],
});