Skip to content

Commit

Permalink
Sign & Send Working
Browse files Browse the repository at this point in the history
  • Loading branch information
@shahbaz17
shahbaz17 committed Oct 25, 2024
1 parent 2a42ae4 commit 866f248
Showing 1 changed file with 43 additions and 87 deletions.
130 changes: 43 additions & 87 deletions mpc-core-kit-web/mpc-core-kit-bitcoin/src/BitcoinComponent.tsx
View file
Original file line number Diff line number Diff line change
Expand Up @@ -44,16 +44,16 @@ interface BitcoinComponentParams {
}

async function handleSendTransaction(signedTransaction: string) {
const response = await fetch("https://blockstream.info/testnet/api/tx", {
method: "POST",
headers: {
"Content-Type": "text/plain",
},
body: signedTransaction,
});
const respText = await response.text();
console.log(respText);
uiConsole(respText);
try {
const response = await axios.post(`https://blockstream.info/testnet/api/tx`, signedTransaction);
console.log("Transaction sent successfully:", response.data);
uiConsole("Transaction sent successfully:", response.data);
return response.data;
} catch (error) {
console.error("Error sending transaction:", error);
uiConsole("Error sending transaction", error);
throw error;
}
}

export const BitcoinComponent = (props: BitcoinComponentParams) => {
Expand Down Expand Up @@ -90,51 +90,54 @@ export const BitcoinComponent = (props: BitcoinComponentParams) => {
uiConsole("signer not initialized yet");
return;
}
if (bitcoinUTXID?.length !== 64) {
const account = payments.p2pkh({ pubkey: signer.publicKey, network: bitcoinNetwork });
console.log("account", account);

const utxos = await fetchUtxos(account.address!);
console.log("utxos", utxos);

const balance = utxos.reduce((acc: any, utxo: { value: any }) => acc + utxo.value, 0);
console.log("balance", balance);

setBitcoinUTXID(utxos[0].txid);
setFundingTxIndex(utxos[0].vout.toString());
setLatestBalance(balance.toString());

if (utxos[0].txid.length !== 64) {
uiConsole("invalid bitcoin utxid");
return;
}

try {
parseInt(fundingTxIndex as string);
} catch (e) {
uiConsole("invalid funding tx index");
return;
const utxo = utxos[0];
const amount = utxo.value;
const feeResponse = await axios.get("https://blockstream.info/testnet/api/fee-estimates");
const maxFee = Math.max(...(Object.values(feeResponse.data) as number[]));
const fee = maxFee * 1.2;
console.log("fee", fee);
if (amount <= fee) {
const errorMsg = `Insufficient funds: ${amount} <= ${fee}`;
uiConsole(errorMsg);
throw new Error(errorMsg);
}

// unspent transaction
const txId = bitcoinUTXID; // looks like this "bb072aa6a43af31642b635e82bd94237774f8240b3e6d99a1b659482dce013c6"
const total = Number(latestBalance); // 1321953; // 0.0000017

const value = amount ? Number(amount) : 20;
const miner = Number(minerFee);

// fetch transaction from testnet
const txHex = await (await fetch(`https://blockstream.info/testnet/api/tx/${txId}/hex`)).text();
console.log("txHex", txHex);

console.log("receiverAddr", receiverAddr);

const selfAddr = getAddress(signer, "btc", bitcoinNetwork);
if (!selfAddr) {
uiConsole("invalid address");
return;
}
const sendAmount = amount - Math.floor(fee);

console.log(selfAddr, typeof selfAddr);
const psbt = new Psbt({ network: bitcoinNetwork })
.addInput({
hash: txId,
index: parseInt(fundingTxIndex as string),
hash: utxo.txid,
index: utxo.vout,
nonWitnessUtxo: Buffer.from(txHex, "hex"),
})
.addOutput({
address: receiverAddr ? receiverAddr : selfAddr!,
value: value,
})
.addOutput({
address: selfAddr,
value: total - value - miner,
address: receiverAddr ? receiverAddr : account.address!,
value: sendAmount,
});

uiConsole("Signing transaction...");
Expand Down Expand Up @@ -173,23 +176,9 @@ export const BitcoinComponent = (props: BitcoinComponentParams) => {
uiConsole("invalid bitcoin utxid");
return;
}
// try {
// parseInt(fundingTxIndex as string);
// } catch (e) {
// uiConsole("invalid funding tx index");
// return;
// }

// unspent transaction
// const txId = bitcoinUTXID; // looks like this "bb072aa6a43af31642b635e82bd94237774f8240b3e6d99a1b659482dce013c6"
// const total = Number(balance); // 1321953; // 0.0000017

// const value = amount ? Number(amount) : 20;
// const miner = Number(minerFee);

const utxo = utxos[0];
const amount = utxo.value;
console.log("amount", amount, typeof amount);
const feeResponse = await axios.get("https://blockstream.info/testnet/api/fee-estimates");
const maxFee = Math.max(...(Object.values(feeResponse.data) as number[]));
const fee = maxFee * 1.2;
Expand All @@ -201,15 +190,7 @@ export const BitcoinComponent = (props: BitcoinComponentParams) => {
}

const sendAmount = amount - Math.floor(fee);
console.log("sendAmount", sendAmount);

// const selfAddr = account.address!;
// console.log("TESTTTTTTTT");
// console.log(selfAddr, typeof selfAddr);
// console.log("receiverAddr", receiverAddr);
// console.log("BUFFER", Buffer.from("76a9148bbc95d2709c71607c60ee3f097c1217482f518d88ac", "hex"));
// console.log("BUFFER from Output", account.output);
// console.log("BUFFER from CW", Buffer.from("0014" + account.hash?.toString("hex"), "hex"));

const psbt = new Psbt({ network: bitcoinNetwork })
.addInput({
hash: utxo.txid,
Expand All @@ -220,43 +201,18 @@ export const BitcoinComponent = (props: BitcoinComponentParams) => {
},
})
.addOutput({
address: "tb1qtxscrxxaukyjf2hrwwe08q88c623fxd72rk6c3",
address: receiverAddr ? receiverAddr : account.address!,
value: sendAmount,
});

uiConsole("Signing transaction...");
await psbt.signAllInputsAsync(signer);

// psbt.finalizeAllInputs();
// const txHex = psbt.extractTransaction().toHex();
// console.log("txHex", txHex);

// try {
// const response = await axios.post(`https://blockstream.info/testnet/api/tx`, txHex);
// console.log("Transaction sent successfully:", response.data);
// uiConsole("Transaction sent successfully:", response.data);
// return response.data;
// } catch (error) {
// console.error("Error sending transaction:", error);
// uiConsole("Error sending transaction", error);
// throw error;
// }

// psbt.validateSignaturesOfInput(0, BTCValidator);
const validation = psbt.validateSignaturesOfInput(0, BTCValidator);
console.log("validation", validation);
const signedTransaction = psbt.finalizeAllInputs().extractTransaction().toHex();
console.log("signedTransaction", signedTransaction);
uiConsole("validation", validation, "signedTransaction", signedTransaction);

// console.log("psbt");
// console.log("psbt", psbt.extractTransaction());

// uiConsole("Signed Transaction: ", signedTransaction, "Copy the above into https://blockstream.info/testnet/tx/push");
// if (!validation) uiConsole("validation failed");
// console.log(validation ? "Validated" : "failed");
// console.log("signedTransaction: ", signedTransaction);

// if (send) await handleSendTransaction(signedTransaction);
if (send) await handleSendTransaction(signedTransaction);
};

const signTransactionSegwitMultipleSigs = async (send?: boolean) => {
Expand Down

0 comments on commit 866f248

Please sign in to comment.