add taskSplit, HD-note

cli.js

@@ -21,6 +21,8 @@ const program = require('commander');
 const { GasPriceOracle } = require('gas-price-oracle');
 const SocksProxyAgent = require('socks-proxy-agent');
 const is_ip_private = require('private-ip');
+const bip39 = require("bip39");
+const { hdkey } = require('ethereumjs-wallet');
 
 let web3, torPort, tornado, tornadoContract, tornadoInstance, circuit, proving_key, groth16, erc20, senderAccount, netId, netName, netSymbol, doNotSubmitTx, multiCall, privateRpc, subgraph;
 let MERKLE_TREE_HEIGHT, ETH_AMOUNT, TOKEN_AMOUNT, PRIVATE_KEY;
@@ -1529,4 +1531,76 @@ async function main() {
   }
 }
 
-main();
+// main();
+
+function taskSplit({ amount, options }) {
+  options.sort().reverse()
+  optimalTask = {}
+  console.log("try to deposit ", amount, "via ", options)
+  console.log("optimal deposit are:")
+  for (var option of options) {
+    tmp = Math.floor(amount / option)
+    amount -= tmp * option
+    optimalTask[option] = tmp
+    console.log(tmp, "deposit via", option)
+  }
+  return optimalTask
+}
+
+function genCompactNote({ currency, amount, netId }) {
+  var mnemonic = bip39.generateMnemonic()
+  fs.writeFileSync(`./hd-torn-${currency}-${amount}-${netId}.txt`, mnemonic, 'utf8');
+  console.log("backup hd-torn note with seed: ", mnemonic)
+  console.log("this hierarchical deterministic note can generate multiple deposit.")
+
+  return mnemonic
+}
+
+
+function createMultipleDeposit({ mnemonic, amount }) {
+  let seed = bip39.mnemonicToSeedSync(mnemonic);
+  let hdwallet = hdkey.fromMasterSeed(seed);
+  let wallet_hdpath = "m/44'/60'/0'/0/";
+
+  let deposits = [];
+  for (let i = 0; i < amount; i++) {
+
+    let wallet1 = hdwallet.derivePath(wallet_hdpath + (i * 2)).getWallet();
+    let secretRaw = wallet1.getPrivateKey();
+    let secret = bigInt.leBuff2int(secretRaw.slice(1))
+
+    let wallet2 = hdwallet.derivePath(wallet_hdpath + (i * 2 + 1)).getWallet();
+    let nullifierRaw = wallet2.getPrivateKey();
+    let nullifier = bigInt.leBuff2int(nullifierRaw.slice(1))
+
+    let dep = createDeposit({ nullifier: nullifier, secret: secret })
+    deposits.push({ idx: i, deposit: dep });
+
+  }
+  return deposits;
+}
+
+function recoverDepositFromMnemonic({ mnemonic, idx }) {
+  let seed = bip39.mnemonicToSeedSync(mnemonic);
+  let hdwallet = hdkey.fromMasterSeed(seed);
+  let wallet_hdpath = "m/44'/60'/0'/0/";
+  let wallet1 = hdwallet.derivePath(wallet_hdpath + (idx * 2)).getWallet();
+  let secretRaw = wallet1.getPrivateKey();
+  let secret = bigInt.leBuff2int(secretRaw.slice(1))
+  let wallet2 = hdwallet.derivePath(wallet_hdpath + (idx * 2 + 1)).getWallet();
+  let nullifierRaw = wallet2.getPrivateKey();
+  let nullifier = bigInt.leBuff2int(nullifierRaw.slice(1))
+
+  let dep = createDeposit({ nullifier: nullifier, secret: secret })
+  return dep
+}
+
+
+tasks = taskSplit({ amount: 420.69, options: [0.1, 1, 10, 100,] })
+console.log(tasks)
+const mnemonic = genCompactNote({ currency: "ETH", amount: '420.69', netId: 1 })
+const amount = 3;
+const deposits = createMultipleDeposit({ mnemonic, amount });
+console.log(deposits);
+console.log(recoverDepositFromMnemonic({ mnemonic, idx: 0 }))
+console.log(recoverDepositFromMnemonic({ mnemonic, idx: 1 }))