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tymur999
2024-05-26 22:03:11 -05:00
parent 9f05a8265f
commit f63c824448
1 changed files with 59 additions and 52 deletions
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111
src/index.ts
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@@ -1,63 +1,70 @@
import {ConfirmedSignatureInfo, Connection, PublicKey} from "@solana/web3.js"; import {clusterApiUrl, ConfirmedSignatureInfo, Connection, PublicKey} from "@solana/web3.js";
const connection = new Connection(process.env.RPC!); const connection = new Connection("https://mainnet.helius-rpc.com/?api-key=" + process.env.HELIUS_KEY);
//note: only supports last 1000 txns
async function calculatePumpFunProfit(walletAddress: PublicKey, myToken: PublicKey) { async function calculatePumpFunProfit(walletAddress: PublicKey, myToken: PublicKey) {
let solNetProfit = 0; let solNetProfit = 0;
const sigs: ConfirmedSignatureInfo[] = [];
let lastTxn: string | undefined = undefined; let lastTxn: string | undefined = undefined;
do { do {
const newSigs = await connection.getSignaturesForAddress(walletAddress, {limit: 1000, before: lastTxn}); const sigs = await connection.getSignaturesForAddress(walletAddress, {limit: 500, before: lastTxn});
if(!newSigs.length) break; if(!sigs.length) break;
sigs.push( lastTxn = sigs[sigs.length - 1]?.signature;
...newSigs
); const sigsChunked: string[][] = [];
lastTxn = newSigs[newSigs.length - 1]?.signature; for(let i = 0; i < sigs.length; i++) {
const chunkIndex = Math.trunc(i/100);
if(!sigsChunked[chunkIndex]) sigsChunked[chunkIndex] = [];
sigsChunked[chunkIndex].push(sigs[i].signature);
}
for(const chunk of sigsChunked) {
let chunkHasToken = false;
let res: Response | null = null;
do {
res = await fetch("https://api.helius.xyz/v0/transactions?api-key=" + process.env.HELIUS_KEY, {
method: "POST",
headers: {"Content-Type": "application/json"},
body: JSON.stringify({transactions: chunk})
});
} while(!res?.ok);
const txnArr: HeliusResponse[] = await res.json();
for(const txn of txnArr) {
if(txn.transactionError) continue;
const containsToken = txn.accountData.some(ad => ad.tokenBalanceChanges.some(tbc => tbc.mint == myToken.toString()));
if(!containsToken) continue;
const accountData = txn.accountData.find(ad => ad.account == walletAddress.toString());
if(!accountData) continue;
chunkHasToken = true;
solNetProfit += accountData.nativeBalanceChange;
}
if(!chunkHasToken && solNetProfit != 0) return solNetProfit; //assume end, return solNetProfit
}
} while(true); } while(true);
let irrelevantTxns = 0;
for(const sig of sigs) {
if(irrelevantTxns > 100 && solNetProfit != 0) return solNetProfit;
if(sig.err) {
irrelevantTxns++;
continue;
}
const txn = await connection.getParsedTransaction(sig.signature, {maxSupportedTransactionVersion: 0});
if(!txn || !txn.meta) {
irrelevantTxns++;
continue;
}
//check if there was a change in myToken
const postTokenBalances = txn.meta.postTokenBalances;
const preTokenBalances = txn.meta.preTokenBalances;
if(!postTokenBalances?.length && !preTokenBalances?.length) {
irrelevantTxns++;
continue;
}
const postMyToken = postTokenBalances?.find(tb => tb.mint == myToken.toString() &&
tb.owner == walletAddress.toString());
const preMyToken = preTokenBalances?.find(tb => tb.mint == myToken.toString() &&
tb.owner == walletAddress.toString());
if(!postMyToken && !preMyToken) {
irrelevantTxns++;
continue;
}
//calculate sol change
if(!txn.meta.preBalances.length || !txn.meta.postBalances.length) {
irrelevantTxns++;
continue;
}
let solChange = txn.meta.postBalances[0] - txn.meta.preBalances[0]; //in lamports
console.log("new transaction with sol change:", solChange);
solNetProfit += solChange;
irrelevantTxns = 0;
}
return solNetProfit return solNetProfit
} }
calculatePumpFunProfit(new PublicKey("4TstnQxFS89Vfn1xtxN4V4P9mzaFiGQME1fn8EFdXCSm"), new PublicKey("Bh1vHe8suqDnRWJFzgfrXRTFQ6XiXZCip4DQLKLokB5K")) calculatePumpFunProfit(new PublicKey("4TstnQxFS89Vfn1xtxN4V4P9mzaFiGQME1fn8EFdXCSm"), new PublicKey("Bh1vHe8suqDnRWJFzgfrXRTFQ6XiXZCip4DQLKLokB5K"))
.then(console.log); .then(console.log);
interface HeliusResponse {
accountData: [
{
account: string,
nativeBalanceChange: number,
tokenBalanceChanges: [
{
userAccount: string,
tokenAccount: string,
"rawTokenAmount": {
"tokenAmount": bigint,
"decimals": bigint
},
mint: string
}
]
}
],
transactionError: any
}