// Generate a new secret key
const mySecretKey = ed.utils.randomPrivateKey();

// Get the public key and Algorand address
const myPublicKey = await ed.getPublicKeyAsync(mySecretKey);
const myAlgorandAddress = addressFromPubKey(myPublicKey);

import * as ed from "@noble/ed25519";
import { addressFromString, Transaction, SignedTransaction, assignFee, encodeTransaction, encodeSignedTransaction } from "@algorandfoundation/algokit-transact";

// Get the sender and reciever addresses
const alicePubKey = await ed.getPublicKeyAsync(aliceSk);
const alice = addressFromPubKey(alicePubKey);
const bob = addressFromString("B72WNFFEZ7EOGMQPP7ROHYS3DSLL5JW74QASYNWGZGQXWRPJECJJLJIJ2Y");

// Build the base payment transaction
const baseTx: Transaction = {
  transactionType: "Payment",
  sender: alice,
  firstValid: 1337n,
  lastValid: 1347n,
  genesisHash: Buffer.from("SGO1GKSzyE7IEPItTxCByw9x8FmnrCDexi9/cOUJOiI=", "base64"),
  genesisId: "testnet-v1.0",
  payment: {
    amount: 1337n,
    receiver: bob,
  },
};

// Calculate and attach the correct fee, based on the supplied params
const tx = assignFee(baseTx, {
  feePerByte: 0n,
  minFee: 1000n,
  maxFee: 2000n,
});

// Encode the transaction for signing
const encodedTx = encodeTransaction(tx);

//Sign the transaction using `@noble/ed25519`
const txSig = await ed.signAsync(encodedTx, aliceSk);

// Create an encoded signed transaction ready for sending to the algod api
const signedTx: SignedTransaction = {
  transaction: tx,
  signature: txSig,
};
const encodedSignedTx = encodeSignedTransaction(signedTxn);