storage.ts

import { Address, fromHex, toHex } from 'viem';
// @ts-expect-error - no types
import { Web3Storage } from 'web3.storage';

const WEB3_STORAGE_TOKEN = import.meta.env.VITE_WEB3_STORAGE_TOKEN as string;

const client = new Web3Storage({ token: WEB3_STORAGE_TOKEN });

function makeFile(contents: string, filename: string) {
  const blob = new Blob([contents], { type: 'application/json' });
  return new File([blob], filename);
}

export async function store(object: unknown): Promise<Address> {
  const cid = await client.put([makeFile(JSON.stringify(object), 'metadata.json')]);
  return toHex(cid);
}

export async function retrieve(cidHex: Address) {
  const cid = fromHex(cidHex, 'string');

  const res = await client.get(cid);
  const [file]: File[] = await res.files();
  return JSON.parse(Buffer.from(await file.arrayBuffer()).toString('utf-8'));
}