Merge pull request #2320 from Fscare/master

Add Symphony Aggregator

aggregators/symphony/index.ts

@@ -0,0 +1,3 @@
+import { getSymphAdapter } from "./symphonyApi";
+
+export default getSymphAdapter("volume"); 

aggregators/symphony/symphonyApi.ts

@@ -0,0 +1,67 @@
+import { Adapter, FetchResultVolume } from "../../adapters/types";
+import { CHAIN } from "../../helpers/chains";
+import { Chain } from "@defillama/sdk/build/general";
+import fetchURL from "../../utils/fetchURL";
+
+const API_ENDPOINT = "http://stats.symphony.ag/api/v1/stats";
+
+interface IVolumeResponse {
+  allTime: {
+    totalTrades: number;
+    totalVolumeUSD: number;
+  };
+  last24Hours: {
+    numberOfTrades: number;
+    volumeUSD: number;
+  };
+}
+
+const mapChainId = {
+  [CHAIN.SEI]: 'sei',
+} as const;
+
+export function getSymphAdapter(type: "volume") {
+  const fetch = (chain: Chain) => {
+    return async (timestampInput: any): Promise<FetchResultVolume> => {
+      try {
+        const timestamp = typeof timestampInput === 'object' ? 
+          timestampInput.startOfDay || timestampInput.toTimestamp : 
+          timestampInput;
+
+        if (!timestamp || isNaN(timestamp)) {
+          throw new Error(`Invalid timestamp: ${JSON.stringify(timestampInput)}`);
+        }
+
+        const response: IVolumeResponse = await fetchURL(`${API_ENDPOINT}?timestamp=${timestamp}`);
+
+        if (!response || !response.last24Hours || !response.allTime) {
+          throw new Error('Invalid response from API');
+        }
+
+        return {
+          dailyVolume: response.last24Hours.volumeUSD.toString(),
+          totalVolume: response.allTime.totalVolumeUSD.toString(),
+          timestamp,
+        };
+      } catch (error) {
+        console.error(`Error fetching Symph volume for chain ${chain}:`, error);
+        throw error;
+      }
+    };
+  };
+
+  const adapter: Adapter = {
+    version: 2,
+    adapter: {
+      [CHAIN.SEI]: {
+        fetch: fetch(CHAIN.SEI),
+        start: 1703376000, // Dec 24, 2024 00:00:00 UTC
+        meta: {
+          methodology: 'Tracks the total value of all trades executed through Symphony Aggregator on SEI chain. Volume is calculated by summing the USD value of all trades.'
+        }
+      },
+    },
+  };
+
+  return adapter;
+}