btc update utxo set

lib/db/main_db.dart

@@ -160,6 +160,28 @@ class MainDB {
         await isar.utxos.putAll(utxos);
       });
 
+  Future<void> updateUTXOs(String walletId, List<UTXO> utxos) async {
+    await isar.writeTxn(() async {
+      final set = utxos.toSet();
+      for (final utxo in utxos) {
+        // check if utxo exists in db and update accordingly
+        final storedUtxo = await isar.utxos
+            .where()
+            .txidWalletIdVoutEqualTo(utxo.txid, utxo.walletId, utxo.vout)
+            .findFirst();
+
+        if (storedUtxo != null) {
+          // update
+          set.remove(utxo);
+          set.add(storedUtxo);
+        }
+      }
+
+      await isar.utxos.where().walletIdEqualTo(walletId).deleteAll();
+      await isar.utxos.putAll(set.toList());
+    });
+  }
+
   // transaction notes
   QueryBuilder<TransactionNote, TransactionNote, QAfterWhereClause>
       getTransactionNotes(String walletId) =>

lib/models/isar/models/blockchain_data/utxo.dart

@@ -4,7 +4,7 @@ import 'package:isar/isar.dart';
 
 part 'utxo.g.dart';
 
-@Collection(accessor: "utxos")
+@Collection(accessor: "utxos", inheritance: false)
 class UTXO {
   UTXO({
     required this.walletId,
@@ -84,4 +84,16 @@ class UTXO {
       "address: $address, "
       "otherData: $otherData, "
       "}";
+
+  @override
+  bool operator ==(Object other) {
+    return other is UTXO &&
+        other.walletId == walletId &&
+        other.txid == txid &&
+        other.vout == vout;
+  }
+
+  @override
+  @ignore
+  int get hashCode => Object.hashAll([walletId, txid, vout]);
 }

lib/services/coins/bitcoin/bitcoin_wallet.dart

@@ -1796,13 +1796,7 @@ class BitcoinWallet extends CoinServiceAPI
         }
       }
 
-      final currentChainHeight = await chainHeight;
-
       final List<isar_models.UTXO> outputArray = [];
-      int satoshiBalanceTotal = 0;
-      int satoshiBalancePending = 0;
-      int satoshiBalanceSpendable = 0;
-      int satoshiBalanceBlocked = 0;
 
       for (int i = 0; i < fetchedUtxoList.length; i++) {
         for (int j = 0; j < fetchedUtxoList[i].length; j++) {
@@ -1863,6 +1857,33 @@ class BitcoinWallet extends CoinServiceAPI
             address: utxoOwnerAddress,
           );
 
+          outputArray.add(utxo);
+        }
+      }
+
+      Logging.instance
+          .log('Outputs fetched: $outputArray', level: LogLevel.Info);
+
+      await db.updateUTXOs(walletId, outputArray);
+
+      // finally update balance
+      await _updateBalance();
+    } catch (e, s) {
+      Logging.instance
+          .log("Output fetch unsuccessful: $e\n$s", level: LogLevel.Error);
+    }
+  }
+
+  Future<void> _updateBalance() async {
+    final utxos = await db.getUTXOs(walletId).findAll();
+    final currentChainHeight = await chainHeight;
+
+    int satoshiBalanceTotal = 0;
+    int satoshiBalancePending = 0;
+    int satoshiBalanceSpendable = 0;
+    int satoshiBalanceBlocked = 0;
+
+    for (final utxo in utxos) {
       satoshiBalanceTotal += utxo.value;
 
       if (utxo.isBlocked) {
@@ -1874,21 +1895,8 @@ class BitcoinWallet extends CoinServiceAPI
           satoshiBalancePending += utxo.value;
         }
       }
-
-          outputArray.add(utxo);
-        }
     }
 
-      Logging.instance
-          .log('Outputs fetched: $outputArray', level: LogLevel.Info);
-
-      // TODO move this out of here and into IDB
-      await db.isar.writeTxn(() async {
-        await db.isar.utxos.where().walletIdEqualTo(walletId).deleteAll();
-        await db.isar.utxos.putAll(outputArray);
-      });
-
-      // finally update balance
     _balance = Balance(
       coin: coin,
       total: satoshiBalanceTotal,
@@ -1897,10 +1905,6 @@ class BitcoinWallet extends CoinServiceAPI
       pendingSpendable: satoshiBalancePending,
     );
     await updateCachedBalance(_balance!);
-    } catch (e, s) {
-      Logging.instance
-          .log("Output fetch unsuccessful: $e\n$s", level: LogLevel.Error);
-    }
   }
 
   @override