/**
 * Turns Simple Icons into one map of slug → [path, brand colour].
 *
 * The package ships a file per icon and 15MB of SVG wrapper around what is
 * really a single `d` attribute each, plus a separate metadata file carrying
 * the brand's own hex. This joins the two and throws the rest away.
 *
 * The output goes to public/ rather than src/: it is fetched once at runtime
 * instead of being parsed into the JS bundle at every startup.
 *
 * `npm run build` runs this, so the result is never committed and never stale.
 */
import { readFileSync, readdirSync, writeFileSync } from "node:fs";
import { join } from "node:path";

const ICONS = "node_modules/simple-icons/icons";
const META = "node_modules/simple-icons/data/simple-icons.json";
const OUT = "public/brand-icons.json";

const hexes = new Map();
for (const icon of JSON.parse(readFileSync(META, "utf8"))) {
  hexes.set(icon.slug, icon.hex);
}

const icons = {};
for (const file of readdirSync(ICONS)) {
  if (!file.endsWith(".svg")) continue;
  const slug = file.slice(0, -4);
  const path = /\sd="([^"]+)"/.exec(readFileSync(join(ICONS, file), "utf8"))?.[1];
  if (!path) continue;
  icons[slug] = [path, hexes.get(slug) ?? "64748B"];
}

writeFileSync(OUT, JSON.stringify(icons));
const kb = Math.round(readFileSync(OUT).length / 1024);
console.log(`${Object.keys(icons).length} icons → ${OUT} (${kb} KB)`);