index.ts

import { BN } from 'bn.js';
import { Address, TonClient, toNano } from 'ton';
import { unixNow } from './src/lib/utils';
import { MineMessageParams, Queries } from './src/giver/NftGiver.data';

const qrcode = require('qrcode-terminal');

async function main() {
  const wallet = Address.parse(
    'EQAfsHnY2nTQDk4WTwXQfbCZ5GoJzD53qkMwKUOugLCgwFMZ',
  );
  console.log(wallet);

  const collection = Address.parse(
    'EQDk8N7xM5D669LC2YACrseBJtDyFqwtSPCNhRWXU7kjEptX',
  );

  const client = new TonClient({
    endpoint: 'https://testnet.toncenter.com/api/v2/jsonRPC',
    apiKey: 'API_KEY',
  });

  const miningData = await client.callGetMethod(collection, 'get_mining_data');

  console.log(miningData);

  const parseStackNum = (sn: any) => new BN(sn[1].substring(2), 'hex');

  const complexity = parseStackNum(miningData.stack[0]);
  const last_success = parseStackNum(miningData.stack[1]);
  const seed = parseStackNum(miningData.stack[2]);
  const target_delta = parseStackNum(miningData.stack[3]);
  const min_cpl = parseStackNum(miningData.stack[4]);
  const max_cpl = parseStackNum(miningData.stack[5]);

  console.log('complexity', complexity);
  console.log('last_success', last_success.toString());
  console.log('seed', seed);
  console.log('target_delta', target_delta.toString());
  console.log('min_cpl', min_cpl.toString());
  console.log('max_cpl', max_cpl.toString());

  const mineParams: MineMessageParams = {
    expire: unixNow() + 300, // 5 min is enough to make a transaction
    mintTo: wallet, // your wallet
    data1: new BN(0), // temp variable to increment in the miner
    seed, // unique seed from get_mining_data
  };

  let msg = Queries.mine(mineParams);
  let progress = 0;

  while (new BN(msg.hash(), 'be').gt(complexity)) {
    progress += 1;
    console.clear();
    console.log(
      `Mining started: please, wait for 30-60 seconds to mine your NFT!`,
    );
    console.log(' ');
    console.log(
      `⛏ Mined ${progress} hashes! Last: `,
      new BN(msg.hash(), 'be').toString(),
    );

    mineParams.expire = unixNow() + 300;
    mineParams.data1.iaddn(1);
    msg = Queries.mine(mineParams);
  }

  console.log(' ');
  console.log('💎 Mission completed: msg_hash less than pow_complexity found!');
  console.log(' ');
  console.log('msg_hash: ', new BN(msg.hash(), 'be').toString());
  console.log('pow_complexity: ', complexity.toString());
  console.log(
    'msg_hash < pow_complexity: ',
    new BN(msg.hash(), 'be').lt(complexity),
  );

  console.log(' ');
  console.log(
    '💣 WARNING! As soon as you find the hash, you should quickly make a transaction.',
  );
  console.log(
    'If someone else makes a transaction, the seed changes, and you have to find a hash again!',
  );
  console.log(' ');

  // flags work only in user-friendly address form
  const collectionAddr = collection.toFriendly({
    urlSafe: true,
    bounceable: true,
  });
  // we must convert TON to nanoTON
  const amountToSend = toNano('0.05').toString();
  // BOC means Bag Of Cells here
  const preparedBodyCell = msg.toBoc().toString('base64url');

  // final method to build a payment url
  const tonDeepLink = (address: string, amount: string, body: string) => {
    return `ton://transfer/${address}?amount=${amount}&bin=${body}`;
  };

  const link = tonDeepLink(collectionAddr, amountToSend, preparedBodyCell);

  console.log('🚀 Link to receive an NFT:');
  console.log(link);

  qrcode.generate(link, { small: true }, function (qrcode: any) {
    console.log('🚀 Link to mine your NFT (use Tonkeeper in testnet mode):');
    console.log(qrcode);
    console.log(
      '* If QR is still too big, please run script from the terminal. (or make the font smaller)',
    );
  });
}

main();