Merge pull request #1682 from aviggiano/master

Add SizeCredit fees

fees/size-credit.ts

@@ -0,0 +1,69 @@
+import ADDRESSES from '../helpers/coreAssets.json';
+import { Adapter, FetchOptions } from "../adapters/types";
+import { CHAIN } from "../helpers/chains";
+
+const SZWETH_CONTRACT = '0x974583f05de1fd18c59c77c4a8803cf0c7db5333';
+const SZAUSDC_CONTRACT = '0x38978038a06a21602a4202dfa66968e7f525bf3e';
+const AUSDC_CONTRACT = '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913';
+const SIZE_PROXY_CONTRACT = '0xC2a429681CAd7C1ce36442fbf7A4a68B11eFF940';
+
+const fetch: any = async ({ createBalances, getLogs, api, getFromBlock, getToBlock }: FetchOptions) => {
+  const fees = createBalances()
+  const [fromBlock, toBlock] = await Promise.all([getFromBlock(), getToBlock()])
+  const FEE_MAPPING = [
+    ADDRESSES.base.WETH,
+    AUSDC_CONTRACT
+  ]
+  const logsArray = await Promise.all([
+    getLogs({
+      target: SZWETH_CONTRACT,
+      eventAbi: "event Transfer(address indexed from, address indexed to, uint256 value)",
+      fromBlock,
+      toBlock
+    }),
+    getLogs({
+      target: SZAUSDC_CONTRACT,
+      eventAbi: "event TransferUnscaled(address indexed from, address indexed to, uint256 value)",
+      fromBlock,
+      toBlock
+    })
+  ])
+  const feeConfig = await api.call({
+    target: SIZE_PROXY_CONTRACT,
+    abi: "function feeConfig() view returns (uint256 swapFeeAPR, uint256 fragmentationFee, uint256 liquidationRewardPercent, uint256 overdueCollateralProtocolPercent, uint256 collateralProtocolPercent, address feeRecipient)",
+    params: [],
+  });
+  const feeRecipient = feeConfig.feeRecipient;
+  logsArray.forEach((logs, i) => {
+    logs.forEach((log) => {
+      if (log.to.toLowerCase() === feeRecipient.toLowerCase()) {
+        fees.add(FEE_MAPPING[i], Number(log.value));
+      }
+    })
+  })
+
+  return {
+    dailyFees: fees,
+    dailyRevenue: fees,
+    dailyProtocolRevenue: fees
+  };
+};
+
+const methodology = "Swap fees are applied on every cash-for-credit trade, and fragmentation fees are charged on every credit split"
+
+const adapter: Adapter = {
+  version: 2,
+  adapter: {
+    [CHAIN.BASE]: {
+      fetch,
+      start: 1721083903,
+      meta: {
+        methodology: {
+          Fees: methodology,
+          ProtocolRevenue: methodology
+        }
+      }
+    },
+  }
+}
+export default adapter;