add ada network stats (#56)

Author: nooxx

src/services/ada.ts

@@ -1,5 +1,6 @@
 import { Service } from './service';
 import {
+  AdaNetworkStats,
   AdaRewards,
   AdaSignedMessage,
   AdaSignedTx,
@@ -300,4 +301,18 @@ export class AdaService extends Service {
       throw new Error(err);
     }
   }
+
+  /**
+   * Retrieve ADA network stats
+   */
+  async getNetworkStats(): Promise<AdaNetworkStats> {
+    try {
+      const { data } = await api.get<AdaNetworkStats>(
+        `/v1/ada/network-stats`,
+      );
+      return data;
+    } catch (err: any) {
+      throw new Error(err);
+    }
+  }
 }

src/types/ada.ts

@@ -68,4 +68,12 @@ export type AdaTx = {
     unsigned_tx_serialized: string;
     inputs: TransactionInputsJSON;
   };
+};
+
+export type AdaNetworkStats = {
+  data: {
+    updated_at: string;
+    network_gross_apy: number;
+    supply_staked_percent: number;
+  };
 };