feat(xlm): add lastBlock function

Signed-off-by: Stéphane Prohaszka <[email protected]>

libs/coin-modules/coin-stellar/src/api/index.ts

@@ -1,28 +1,28 @@
 import type { Api } from "@ledgerhq/coin-framework/api/index";
 import coinConfig, { type StellarConfig } from "../config";
 import {
-  // broadcast,
+  broadcast,
   // combine,
   craftTransaction,
   // estimateFees,
   getBalance,
   listOperations,
-  // lastBlock,
+  lastBlock,
   // rawEncode,
 } from "../logic";
 
 export function createApi(config: StellarConfig): Api {
   coinConfig.setCoinConfig(() => ({ ...config, status: { type: "active" } }));
 
   return {
-    broadcast: () => Promise.reject(new Error("Method not supported")),
+    broadcast,
     combine: () => {
       throw new Error("Method not supported");
     },
     craftTransaction: craft,
     estimateFees: () => Promise.reject(new Error("Method not supported")),
     getBalance,
-    lastBlock: () => Promise.reject(new Error("Method not supported")),
+    lastBlock,
     listOperations,
   };
 }

libs/coin-modules/coin-stellar/src/logic/index.ts

@@ -3,4 +3,5 @@ export { broadcast } from "./broadcast";
 export { craftTransaction } from "./craftTransaction";
 // export { estimateFees } from "./estimateFees";
 export { getBalance } from "./getBalance";
+export { lastBlock } from "./lastBlock";
 export { listOperations } from "./listOperations";

libs/coin-modules/coin-stellar/src/logic/lastBlock.ts

@@ -0,0 +1,6 @@
+import type { BlockInfo } from "@ledgerhq/coin-framework/api/index";
+import { getLastBlock } from "../network";
+
+export async function lastBlock(): Promise<BlockInfo> {
+  return await getLastBlock();
+}

libs/coin-modules/coin-stellar/src/network/horizon.ts

@@ -8,20 +8,14 @@ import type { Account, Operation } from "@ledgerhq/types-live";
 import {
   // @ts-expect-error stellar-sdk ts definition missing?
   AccountRecord,
-  Asset,
   BASE_FEE,
   Horizon,
   NetworkError,
   Networks,
   NotFoundError,
-  Account as StellarSdkAccount,
-  Operation as StellarSdkOperation,
   Transaction as StellarSdkTransaction,
-  TransactionBuilder,
   StrKey,
   MuxedAccount,
-  // @ts-expect-error stellar-sdk ts definition missing?
-  AccountRecord,
 } from "@stellar/stellar-sdk";
 import { BigNumber } from "bignumber.js";
 import {
@@ -88,10 +82,6 @@ Horizon.AxiosClient.interceptors.response.use(response => {
   return response;
 });
 
-function getFormattedAmount(amount: BigNumber) {
-  return amount.div(new BigNumber(10).pow(currency.units[0].magnitude)).toString(10);
-}
-
 export async function fetchBaseFee(): Promise<{
   baseFee: number;
   recommendedFee: number;
@@ -318,6 +308,19 @@ export async function loadAccount(addr: string): Promise<AccountRecord | null> {
   }
 }
 
+export async function getLastBlock(): Promise<{
+  height: number;
+  hash: string;
+  time: Date;
+}> {
+  const ledger = await getServer().ledgers().order("desc").limit(1).call();
+  return {
+    height: ledger.records[0].sequence,
+    hash: ledger.records[0].hash,
+    time: new Date(ledger.records[0].closed_at),
+  };
+}
+
 export const getRecipientAccount: CacheRes<
   Array<{
     recipient: string;

libs/coin-modules/coin-stellar/src/network/index.ts

@@ -6,6 +6,7 @@ export {
   fetchSequence,
   fetchSigners,
   fetchAccountNetworkInfo,
+  getLastBlock,
   getRecipientAccount,
   loadAccount,
   BASE_RESERVE,