feat: add jup referral key script

Author: chambaz

scripts/jup-referral-addresses.ts

@@ -0,0 +1,52 @@
+import { PublicKey } from "@solana/web3.js";
+
+const REFERRAL_PROGRAM_ID = new PublicKey(
+  "REFER4ZgmyYx9c6He5XfaTMiGfdLwRnkV4RPp9t9iF3",
+);
+const REFERRAL_ACCOUNT_PUBKEY = new PublicKey(
+  "Mm7HcujSK2JzPW4eX7g4oqTXbWYDuFxapNMHXe8yp1B",
+);
+
+type BankDbEntry = {
+  mint: string;
+  symbol: string;
+  asset_tag: number;
+};
+
+function getJupReferralFeeAccount(mint: PublicKey): string {
+  const [feeAccount] = PublicKey.findProgramAddressSync(
+    [
+      Buffer.from("referral_ata"),
+      REFERRAL_ACCOUNT_PUBKEY.toBuffer(),
+      mint.toBuffer(),
+    ],
+    REFERRAL_PROGRAM_ID,
+  );
+  return feeAccount.toBase58();
+}
+
+async function main() {
+  const apiResponse = await fetch("https://app.0.xyz/api/banks/db");
+  const bankDb = (await apiResponse.json()) as BankDbEntry[];
+
+  const rows = bankDb
+    .filter((entry) => entry.asset_tag !== 2)
+    .map((entry) => {
+      const mint = new PublicKey(entry.mint);
+      return {
+        Symbol: entry.symbol,
+        Mint: entry.mint,
+        "Jup Referral Key": getJupReferralFeeAccount(mint),
+      };
+    });
+
+  // Sort alphabetically by symbol
+  rows.sort((a, b) => a.Symbol.localeCompare(b.Symbol));
+
+  console.log(`\nFound ${rows.length} banks\n`);
+  console.table(rows);
+}
+
+main().catch((err) => {
+  console.error(err);
+});