evm support

package.json

@@ -9,7 +9,7 @@
     "start:rococo": "RPC_URL=wss://hydradx-rococo-rpc.play.hydration.cloud npm run start",
     "start:mainnet": "USD_TOKEN=2 RPC_URL=wss://rpc.basilisk.cloud npm run start",
     "start:test": "USD_TOKEN=2 NODE_ENV=test RPC_URL=wss://rpc.basilisk.cloud npm run start",
-    "start:test:omnipool": "USD_TOKEN=2 NODE_ENV=test WHALE_AMOUNT=100000000 RPC_URL=wss://hydradx-rpc.dwellir.com npm run start"
+    "start:test:omnipool": "USD_TOKEN=2 NODE_ENV=test WHALE_AMOUNT=100000000 RPC_URL=wss://rpc.hydradx.cloud npm run start"
   },
   "repository": {
     "type": "git",

src/bot.js

@@ -37,6 +37,7 @@ async function main() {
   if (process.env.NODE_ENV === 'test') {
     console.log('testing mode: pushing testing blocks');
     const blockNumbers = new Set([]);
+    blockNumbers.add(4012925);
     blockNumbers.add(3640483);
     blockNumbers.add(3640479);
     blockNumbers.add(3640440);

src/currencies.js

@@ -1,6 +1,7 @@
 import {api} from "./api.js";
 import dijkstrajs from "dijkstrajs";
 import {usdCurrencyId, whaleAmount} from "./config.js";
+import {fromAccount} from "./utils/evm.js";
 
 let currencies = {};
 
@@ -75,7 +76,9 @@ export const decimals = currencyId => {
   return currency.decimals || 12;
 }
 
-export const formatAccount = (address, whale, icon = `🐍`) => (whale ? '🐋' : icon) + `\`${address.toString().substr(-3)}\``;
+const short = address => (fromAccount(address.toString()) || address.toString()).substr(-3);
+
+export const formatAccount = (address, whale, icon = `🐍`) => (whale ? '🐋' : icon) + `\`${short(address)}\``;
 export const formatAmount = ({amount, currencyId}) => new Intl.NumberFormat('en-US', {maximumSignificantDigits: 4})
   .format(Number(amount) / 10 ** decimals(currencyId)).replace(/,/g, " ") + ' ' + symbol(currencyId);
 export const formatUsdValue = value => {

src/utils/evm.js

@@ -0,0 +1,23 @@
+import { decodeAddress } from "@polkadot/util-crypto";
+
+const prefixBytes = Buffer.from("ETH\0");
+
+export function isEvmAccount(address) {
+  if (!address) return false;
+
+  try {
+    const pub = decodeAddress(address, true);
+    return Buffer.from(pub.subarray(0, prefixBytes.length)).equals(prefixBytes);
+  } catch {
+    return false;
+  }
+}
+
+export function fromAccount(address) {
+  if (!isEvmAccount(address)) {
+    return null;
+  }
+  const decodedBytes = decodeAddress(address);
+  const addressBytes = decodedBytes.slice(prefixBytes.length, -8);
+  return Buffer.from(addressBytes).toString("hex");
+}