add btc tvl

projects/btcfi-cdp/index.js

@@ -1,5 +1,7 @@
 const ADDRESSES = require('../helper/coreAssets.json')
 const { sumTokensExport, } = require('../helper/unwrapLPs')
+const { sumTokens } = require("../helper/chain/bitcoin");
+const { ethers } = require("ethers");
 
 const chainPools = {
   bfc: {
@@ -8,10 +10,33 @@ const chainPools = {
   },
 }
 
+const targetContract = "0x0000000000000000000000000000000000000100";
+const rpc = "https://public-01.mainnet.bifrostnetwork.com/rpc";
+
+async function fetchVaultAddresses() {
+  const vaultContract = new ethers.Contract(
+    targetContract,
+    ["function vault_addresses(uint32 pool_round) view returns (string[])"],
+    new ethers.JsonRpcProvider(rpc)
+  );
+
+  const vaultAddresses = await vaultContract.vault_addresses(0);
+
+  return vaultAddresses
+}
+
+async function bitcoinTvl() {
+  return sumTokens({ owners: await fetchVaultAddresses() })
+}
+
 Object.keys(chainPools).forEach(chain => {
   const pools = chainPools[chain]
   const tokensAndOwners = Object.values(pools).map(({ pool, token }) => ([token, pool,]))
   module.exports[chain] = {
     tvl: sumTokensExport({ tokensAndOwners })
   }
-})
+})
+
+module.exports["bitcoin"] = {
+  tvl: bitcoinTvl,
+}