Add Amber Finance

projects/amber-finance/index.js

@@ -0,0 +1,54 @@
+const { queryContract } = require('../helper/chain/cosmos');
+const BigNumber = require('bignumber.js');
+
+const redBank = 'neutron1k8xyccg9nvfavagqjsqngh66w4z286utqweswl4txtnewaymkc9ss5f5e8'
+
+async function getMarkets(chain, redBank) {
+  let startAfter = null;
+  const pageLimit = 5;
+  const allMarkets = [];
+
+  do {
+    const markets = await queryContract({
+      contract: redBank,
+      chain,
+      data: { 'markets_v2': { 'limit': pageLimit, 'start_after': startAfter } },
+    });
+
+    allMarkets.push(...markets.data);
+
+    if (markets.length === pageLimit) startAfter = markets[markets.length - 1].denom;
+    else startAfter = null;
+  } while (startAfter);
+
+  return allMarkets;
+}
+
+async function tvl(api) {
+  const markets = await getMarkets(api.chain, redBank);
+
+  markets.forEach(market => {
+    const netAmount = BigNumber(market.collateral_total_amount).minus(market.debt_total_amount);
+    api.add(market.denom, netAmount.toString());
+  });
+}
+
+async function borrowed(api) {
+  const markets = await getMarkets(api.chain, redBank);
+
+  markets.forEach(market => {
+    api.add(market.denom, market.debt_total_amount);
+  });
+}
+
+module.exports = {
+  timetravel: false,
+  methodology: "Sum token balances by querying the total deposit amount for each asset from the market stats api.",
+  neutron: { 
+    tvl,
+    borrowed
+   },
+  hallmarks: [
+    [1756303200, 'Launch on Neutron'],
+  ],
+};