Dibs

import xrpl from 'xrpl';
import crypto from 'crypto';
import fs from 'fs';

const submitDibs = async (inputFile) => {
	if (!inputFile) {
		throw new Error('No file provided');
	}

	// read the file into a buffer
	const file = fs.readFileSync(inputFile);

	// create a random nonce
	const nonce = crypto.randomBytes(16).toString('hex');

	// create a hash of the file
	const hash = crypto.createHash('sha256').update(file).digest('hex');

	// create a new proof hash from the data nonce + file
	const proof = crypto
		.createHash('sha256')
		.update(nonce + file)
		.digest('hex');

	// this will be what's written to the blockchain
	const dibsData = {
		id: `sha256:${hash}`, // sha256:hash
		proof: `${nonce}:${proof}`, // nonce:proof
		contact: '', // no more than 140 characters
		description: '', // no more than 140 characters
		url: '',
		v: 0 // version
	};

	// remove any empty fields
	Object.keys(dibsData).forEach((key) => dibsData[key] === undefined && delete dibsData[key]);
	Object.keys(dibsData).forEach((key) => dibsData[key] === '' && delete dibsData[key]);

	const dibsDataSerialized = JSON.stringify(dibsData);
	console.log('dibsDataSerialized', dibsDataSerialized);

	console.log('connecting to xrpl');

	// connect to xrpl
	// const xrplClient = new xrpl.Client('wss://s.altnet.rippletest.net:51233');
	const xrplClient = new xrpl.Client('wss://xrplcluster.com'); // live

	// make sure we're connected
	await xrplClient.connect();

	// TODO: setup your wallet etc

	// create a dibs transaction
	const memos = [
		{
			Memo: {
				MemoType: xrpl.convertStringToHex('dibs').toUpperCase(),
				MemoData: xrpl.convertStringToHex(dibsDataSerialized).toUpperCase(),
				MemoFormat: xrpl.convertStringToHex('application/json').toUpperCase()
			}
		}
	];

	const wallet = xrpl.Wallet.fromSeed('sXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX');

	const FIXED_DIBS_ADDRESS = 'rEeMgaXgTvBryoBZdFj9NC5J66JmREcdLf'; // the address of the directory, do not change

	const amount = 1; // 1 xrp required to submit a dibs to the directory

	const tx = {
		TransactionType: 'Payment',
		Account: wallet.address,
		Destination: FIXED_DIBS_ADDRESS,
		Amount: xrpl.xrpToDrops(amount),
		Memos: memos
	};

	const prepared = await xrplClient.autofill(tx);
	const signed = wallet.sign(prepared);

	const resultXrpl = await xrplClient.submitAndWait(signed.tx_blob);

	// see if it completed ok
	if (resultXrpl.result.meta.TransactionResult !== 'tesSUCCESS') {
		// ok = false;
		console.log('Error submitting transaction', resultXrpl);
	}

	await xrplClient.disconnect();
};

// submit the dibs
submitDibs('example.txt');