Merge pull request #304 from PRDTfinance/master

PRDT integration provider:bsc

src/factory/providers/bsc/prdt/index.ts

@@ -0,0 +1,54 @@
+import util from '../../../../util/blockchainUtil';
+import formatter from '../../../../util/formatter';
+import { ITvlParams, ITvlReturn } from '../../../../interfaces/ITvl';
+import BigNumber from 'bignumber.js';
+
+const contracts = [
+  '0x31B8A8Ee92961524fD7839DC438fd631D34b49C6',
+  '0x00199E444155f6a06d74CF36315419d39b874f5c',
+  '0xE39A6a119E154252214B369283298CDF5396026B',
+  '0x3Df33217F0f82c99fF3ff448512F22cEf39CC208',
+  '0x599974D3f2948b50545Fb5aa77C9e0bddc230ADE',
+  '0x22dB94d719659d7861612E0f43EE28C9FF9909C7',
+  '0x49eFb44831aD88A9cFFB183d48C0c60bF4028da8',
+];
+
+const TOKENS = [
+  '0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d',
+  '0x55d398326f99059fF775485246999027B3197955',
+  '0x2170Ed0880ac9A755fd29B2688956BD959F933F8',
+];
+
+async function tvl(params: ITvlParams): Promise<Partial<ITvlReturn>> {
+  const { block, chain, provider, web3 } = params;
+
+  if (block < 30325393) {
+    return {};
+  }
+
+  const balances = {};
+  let totalBnbBalance = new BigNumber(0);
+
+  for (const contract of contracts) {
+    const tokenBalances = await util.getTokenBalances(
+      contract,
+      TOKENS,
+      block,
+      chain,
+      web3,
+    );
+
+    const bnbBalance = await web3.eth.getBalance(contract, block);
+
+    formatter.sumMultiBalanceOf(balances, tokenBalances, chain, provider);
+    totalBnbBalance = totalBnbBalance.plus(bnbBalance);
+  }
+
+  balances['bnb'] = totalBnbBalance.toString();
+
+  formatter.convertBalancesToFixed(balances);
+
+  return { balances };
+}
+
+export { tvl };