add caviar-tangible fees

fees/caviar-tangible.ts

@@ -0,0 +1,58 @@
+import { FetchResultFees, SimpleAdapter } from "../adapters/types"
+import { CHAIN } from "../helpers/chains"
+import { getBlock } from "../helpers/getBlock";
+import * as sdk from "@defillama/sdk";
+
+const topic0_evt_transfer = '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef';
+const topic1_evt_transfer = '0x000000000000000000000000bbc843dcb1009bc7dc988bceb5bb1b50299d9a6d';
+const topic2_evt_transfer = '0x0000000000000000000000006ced48efbb581a141667d7487222e42a3fa17cf7';
+const usdc = '0x2791bca1f2de4661ed88a30c99a7a9449aa84174';
+
+interface ILog {
+  data: string;
+  transactionHash: string;
+  topics: string[];
+  address: string;
+}
+
+const fetchFees = async (timestamp: number): Promise<FetchResultFees> => {
+  const toTimestamp = timestamp;
+  const fromTimestamp = timestamp - 60 * 60 * 24;
+  try {
+    const fromBlock = (await getBlock(fromTimestamp, CHAIN.POLYGON, {}));
+    const toBlock = (await getBlock(toTimestamp, CHAIN.POLYGON, {}));
+
+    const logs: ILog[] = (await sdk.api.util.getLogs({
+      target: usdc,
+      topic: '',
+      toBlock: toBlock,
+      fromBlock: fromBlock,
+      keys: [],
+      chain: CHAIN.POLYGON,
+      topics: [topic0_evt_transfer, topic1_evt_transfer, topic2_evt_transfer]
+    })).output as ILog[];
+    const dailyFees = logs.reduce((acc: number, log: ILog) => {
+      const amount = Number(log.data) / 10 ** 6;
+      return acc + amount;
+    }, 0);
+    return {
+      dailyFees: `${dailyFees}`,
+      dailyHoldersRevenue: `${dailyFees}`,
+      dailyRevenue: `${dailyFees}`,
+      timestamp
+    }
+  } catch (error) {
+    console.error(error)
+    throw error;
+  }
+}
+
+const adapter: SimpleAdapter = {
+  adapter: {
+    [CHAIN.POLYGON]: {
+      fetch: fetchFees,
+      start: async () => 1692144000,
+    }
+  }
+}
+export default adapter