import { createWriteStream, existsSync, mkdirSync, statSync } from "node:fs";
import { pipeline } from "node:stream/promises";
import { Readable } from "node:stream";
import path from "node:path";
import { fileURLToPath } from "node:url";
import { RAW_BASE, SOURCES } from "./sources.mjs";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const RAW_DIR = path.resolve(__dirname, "../raw");
mkdirSync(RAW_DIR, { recursive: true });

async function download(fbx) {
  const dest = path.join(RAW_DIR, fbx);
  if (existsSync(dest) && statSync(dest).size > 0) {
    console.log(`✓ já baixado: ${fbx}`);
    return;
  }
  const url = RAW_BASE + encodeURIComponent(fbx);
  console.log(`↓ baixando ${fbx}...`);
  const res = await fetch(url);
  if (!res.ok || !res.body) {
    throw new Error(`Falha ao baixar ${fbx}: HTTP ${res.status} (${url})`);
  }
  await pipeline(Readable.fromWeb(res.body), createWriteStream(dest));
  console.log(`✓ ${fbx} baixado (${(statSync(dest).size / 1024 / 1024).toFixed(1)} MB)`);
}

for (const { fbx } of SOURCES) {
  await download(fbx);
}

console.log("Todos os modelos-fonte baixados.");