add sDai fee & revenue (#5052)

* add sDai fee & revenue

* update sDai methodology

* more updates on sDai methodology

Author: 0x4r45h

fees/sdai.ts

@@ -0,0 +1,42 @@
+import { FetchOptions, SimpleAdapter } from "../adapters/types";
+import { CHAIN } from "../helpers/chains";
+
+const ClaimedEvent = "event Claimed(uint256 indexed amount)";
+// BridgeInterestReceiver Contract
+const contract = "0x670daeaf0f1a5e336090504c68179670b5059088";
+
+const fetch = async (options: FetchOptions) => {
+  const dailyFees = options.createBalances();
+
+  const data: any[] = await options.getLogs({
+    target: contract,
+    eventAbi: ClaimedEvent,
+  });
+  data.forEach((log: any) => {
+    dailyFees.addGasToken(log.amount);
+  });
+
+  return {
+    dailyFees: dailyFees,
+    dailyRevenue: 0,
+    dailySupplySideRevenue: dailyFees,
+
+  };
+};
+
+const adapter: SimpleAdapter = {
+  version: 2,
+  methodology: {
+    Fees: 'Yield generated from MakerDAO DSR on bridged assets',
+    Revenue: 'No revenue',
+    SupplySideRevenue: 'Total yield is distributed to sDAI holders',
+  },
+  fetch,
+  adapter: {
+    [CHAIN.XDAI]: {
+      start: "2023-09-28",
+    },
+  },
+};
+
+export default adapter;