Track Flow chain fees

fees/flow/index.ts

@@ -0,0 +1,36 @@
+import { FetchOptions, FetchResult, ProtocolType, SimpleAdapter } from "../../adapters/types";
+import { CHAIN } from "../../helpers/chains";
+import fetchURL from "../../utils/fetchURL";
+
+async function fetch(_a: any, _b: any, options: FetchOptions): Promise<FetchResult> {
+  const start = new Date(options.startOfDay * 1000).toISOString();
+  const end = new Date(options.endTimestamp * 1000).toISOString();
+
+  const response = await fetchURL(`https://api.find.xyz/flowscan/v1/stats?from=${start}&metric=fees&timescale=daily&to=${end}`);
+
+  if (!response || !response.data || !response.data[0])
+    throw new Error('Flow fees not found');
+
+  const dailyFees = options.createBalances();
+  dailyFees.addCGToken('flow', response.data[0].number);
+
+  return {
+    dailyFees,
+    dailyRevenue: dailyFees,
+  };
+}
+
+const methodology = {
+  Fees: 'Transaction and storage fees paid by users',
+  Revenue: 'Fees goes to validators'
+}
+
+const adapter: SimpleAdapter = {
+  fetch,
+  chains: [CHAIN.FLOW],
+  start: '2018-12-19',
+  methodology,
+  protocolType: ProtocolType.CHAIN
+}
+
+export default adapter