Merge pull request #116 from threefoldtech/development_getBalance_accountId

support getting balance by account id

Author: AlaaElattar

packages/stellar_client/lib/src/client.dart

@@ -417,23 +417,13 @@ class Client {
   }
 
   Future<List<BalanceInfo>> getBalance() async {
-    List<BalanceInfo> balancesList = [];
-    AccountResponse account = await _sdk.accounts.account(accountId);
-
-    for (Balance balance in account.balances) {
-      BalanceData balanceData;
-      switch (balance.assetType) {
-        case Asset.TYPE_NATIVE:
-          balanceData = BalanceData(assetCode: 'XLM', balance: balance.balance);
-          break;
-        default:
-          balanceData = BalanceData(
-              assetCode: balance.assetCode!, balance: balance.balance);
-      }
-      balancesList.add(balanceData);
+    try {
+      List<BalanceInfo> balancesList =
+          await getBalanceByAccountID(network: _network, accountId: accountId);
+      return balancesList;
+    } catch (error) {
+      throw Exception('Could not get balance due to $error');
     }
-
-    return balancesList;
   }
 
   Future<List<VestingAccount>?> getVestingAccounts() async {

packages/stellar_client/lib/src/helpers.dart

@@ -0,0 +1,35 @@
+import 'package:stellar_client/models/balance.dart';
+import 'package:stellar_client/stellar_client.dart';
+import 'package:stellar_flutter_sdk/stellar_flutter_sdk.dart';
+
+Future<List<BalanceInfo>> getBalanceByAccountID(
+    {required NetworkType network, required String accountId}) async {
+  late StellarSDK _sdk;
+
+  switch (network) {
+    case NetworkType.TESTNET:
+      _sdk = StellarSDK.TESTNET;
+      break;
+    case NetworkType.PUBLIC:
+      _sdk = StellarSDK.PUBLIC;
+      break;
+  }
+
+  List<BalanceInfo> balancesList = [];
+  AccountResponse account = await _sdk.accounts.account(accountId);
+
+  for (Balance balance in account.balances) {
+    BalanceData balanceData;
+    switch (balance.assetType) {
+      case Asset.TYPE_NATIVE:
+        balanceData = BalanceData(assetCode: 'XLM', balance: balance.balance);
+        break;
+      default:
+        balanceData = BalanceData(
+            assetCode: balance.assetCode!, balance: balance.balance);
+    }
+    balancesList.add(balanceData);
+  }
+
+  return balancesList;
+}

packages/stellar_client/lib/stellar_client.dart

@@ -8,6 +8,7 @@ import 'package:stellar_client/models/currency.dart' as currency;
 import 'package:stellar_client/models/transaction_data.dart';
 import 'package:stellar_client/models/vesting_account.dart';
 import 'package:stellar_client/models/transaction.dart';
+import 'package:stellar_client/src/helpers.dart';
 import 'package:stellar_flutter_sdk/stellar_flutter_sdk.dart';
 import 'package:http/http.dart' as http;
 import 'package:convert/convert.dart';