index.js

const fs = require("fs");
const mime = require("mime");
const path = require("path");
const { NFTStorage, File } = require("nft.storage");

const config = require("./config.json");

async function fileFromPath(filePath) {
  const content = await fs.promises.readFile(filePath);
  const type = mime.getType(filePath);
  return new File([content], path.basename(filePath), { type });
}

function getAllImages() {
  const supportImageTypes = ["jpg", "jpeg", "png"];
  let images = [];

  fs.readdirSync(config.imagesDirectory).forEach((file) => {
    if (supportImageTypes.includes(file.split(".").pop())) {
      images.push(path.join(config.imagesDirectory, file));
    }
  });
  return images;
}

function getAllMetadata() {
  let metadata = [];
  fs.readdirSync(config.metadataDirectory).forEach((file) => {
    metadata.push(path.join(config.metadataDirectory, file));
  });
  return metadata;
}

async function main() {
  const allImages = getAllImages();
  const allMetadata = getAllMetadata();

  if (allImages.length !== allMetadata.length) {
    return console.log("Error: Number of images and metadata files do not match");
  }

  let allRequests = [];
  for (let i = 0; i < allImages.length; i++) {
    const imageBlob = await fileFromPath(allImages[i]);
    allRequests.push(imageBlob);

    const metadataBlob = await fileFromPath(allMetadata[i]);
    allRequests.push(metadataBlob);
  }

  const client = new NFTStorage({ token: config.nftStorageKey });

  const cid = await client.storeDirectory(allRequests);
  console.log(cid);

  fs.writeFile("cid.txt", cid, function (err) {
    if (err) return console.log(err);
    console.log("cid saved to cid.txt");
  });
}

main()
  .then(() => console.log("Done"))
  .catch(console.error);