track evedex 24h vol & oi

Author: g1nt0ki

open-interest/evedex.ts

@@ -0,0 +1,31 @@
+const endpoint = 'https://exchange-api.evedex.com/api/external/cmc/v1/contracts'
+import type { FetchOptions, SimpleAdapter } from "../adapters/types";
+import { CHAIN } from "../helpers/chains";
+import fetchURL from "../utils/fetchURL";
+
+const fetch = async (_options: FetchOptions) => {
+  const response = await fetchURL(endpoint);
+
+  let openInterestAtEnd = 0
+  let dailyVolume = 0
+  for (const i of response) {
+    openInterestAtEnd += i.open_interest_usd
+    if (i.quote_currency === 'USD' && i.product_type === 'Perpetual') {
+      dailyVolume += i.quote_volume
+    }
+  }
+
+  return { openInterestAtEnd, dailyVolume };
+};
+
+const adapter: SimpleAdapter = {
+  version: 2,
+  adapter: {
+    [CHAIN.EVENTUM]: {
+      fetch,
+      runAtCurrTime: true,
+    },
+  },
+};
+
+export default adapter;