index.js

const fetch = require("node-fetch");
const readline = require("readline-promise").default.createInterface({
  input: process.stdin,
  output: process.stdout,
});
let obj = require("./types.json");
const fs = require("fs");

console.log(`
      _     _                     _
     | |   | |                   (_)
_ __ | |__ | |_  __  ______   _ __ _ _ __
| '__| '_ /| / // / |______| | '__| | '_ |
| |  | |_) | |>  <           | |  | | |_)|
|_|  |_.__/|_/_//_/          |_|  |_| .__/
                                    | |
                                    |_| `);
console.log(
  "Thanks for installing rblx-rip! Keep in mind some asset types may need to be onsale."
);
// i dont remember which types need it, lol
main();
async function main() {
  if (!fs.existsSync("./assets/")) {
    try {
      fs.mkdirSync("./assets");
    } catch (e) {
      console.error("Error!");
      throw e;
    }
  }
  let asset = parseInt(await readline.questionAsync("Enter an asset ID:  "));
  if (isNaN(asset)) {
    console.log("You can't input a string");
    return main();
  }
  let type = await readline.questionAsync("Enter the asset type:  ");
  console.log(`Ok, ripping the asset id ${asset}`);
  if (obj[type.toLowerCase()]) {
    type = obj[type.toLowerCase()];
    rip();
  } else {
    console.log("You entered an invalid type, please try again.");
    return main();
  }
  async function rip() {
    if (
      type == ".rbxm" ||
      type == ".mp3" ||
      type == ".webm" ||
      type == ".rbxl"
    ) {
      response = await download(asset, {
        method: "GET",
        headers: { "User-Agent": "Roblox/WinInet" },
      });
      response.body.pipe(fs.createWriteStream(`./assets/${asset}${type}`));
    } else if (type == ".rbxmx") {
      resp = await download(asset).then((res) => res.text());
      newId = resp.split(";");
      for (i = 0; newId.length > i; i++) {
        res = await download(newId[i]);
        response.body.pipe(fs.createWriteStream(`./assets/${newId[i]}${type}`));
      }
    } else if (type == ".k") {
      console.log("This is coming soon, this isn't done yet.");
    } else if (type == ".m") {
      response = await download(asset).then((res) => res.text());
      result1 = response.split(
        /<Content name="TextureId"><url>http:\/\/www.roblox.com\/asset\/\?id=([0-9]+)/
      );
      result2 =
        /<Content name="MeshId"><url>http:\/\/www.roblox.com\/asset\/\?id=([0-9]+)/.exec(
          response
        );
      response2 = await download(result1[3]);
      response3 = await download(result2[1]);
      response2.body.pipe(fs.createWriteStream(`./assets/${result1[3]}.png`));
      response3.body.pipe(fs.createWriteStream(`./assets/${result2[1]}.obj`));
    } else if (type == ".z") {
      response = await download(asset).then((res) => res.text());
      result1 = /MeshId.*?rbxassetid:\/\/([0-9]+)/.exec(response);
      result2 = /TextureId.*?rbxassetid:\/\/([0-9]+)/.exec(response);
      if (result2 == null) {
        result2 = /http:\/\/www.roblox.com\/asset\/\?id=([0-9]+)/.exec(
          response
        );
      }
      response2 = await download(result1[1]);
      response3 = await download(result2[1]);
      response2.body.pipe(fs.createWriteStream(`./assets/${result1[1]}.obj`));
      response3.body.pipe(fs.createWriteStream(`./assets/${result2[1]}.png`));
    } else {
      response = await download(asset).then((res) => res.text());
      newId = response
        .split("<url>")
        .join()
        .split("</url>")
        .join()
        .split(",")[1]
        .replace(/\D/g, "");
      res = await download(newId);
      res.body.pipe(fs.createWriteStream(`./assets/${newId}${type}`));
    }
    readline.close();
  }
}

async function download(asset, headers) {
  return await fetch(
    `https://assetdelivery.roblox.com/v1/asset?id=${asset}`,
    headers ? headers : {}
  );
}