Save transaction history

cw_bitcoin/lib/electrum_transaction_history.dart

@@ -1,7 +1,6 @@
 import 'dart:convert';
 import 'package:cw_core/pathForWallet.dart';
 import 'package:cw_core/wallet_info.dart';
-import 'package:flutter/foundation.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cw_core/transaction_history.dart';
 import 'package:cw_bitcoin/file.dart';
@@ -67,7 +66,7 @@ abstract class ElectrumTransactionHistoryBase
   Future<void> _load() async {
     try {
       final content = await _read();
-      final txs = content['transactions'] as Map<String, dynamic> ?? {};
+      final txs = content['transactions'] as Map<String, dynamic>? ?? {};
 
       txs.entries.forEach((entry) {
         final val = entry.value;

cw_ethereum/lib/ethereum_transaction_history.dart

@@ -1,29 +1,73 @@
+import 'dart:convert';
 import 'dart:core';
+import 'package:cw_core/pathForWallet.dart';
+import 'package:cw_core/wallet_info.dart';
+import 'package:cw_ethereum/file.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cw_core/transaction_history.dart';
 import 'package:cw_ethereum/ethereum_transaction_info.dart';
 
 part 'ethereum_transaction_history.g.dart';
 
-class EthereumTransactionHistory = EthereumTransactionHistoryBase
-    with _$EthereumTransactionHistory;
+const transactionsHistoryFileName = 'transactions.json';
+
+class EthereumTransactionHistory = EthereumTransactionHistoryBase with _$EthereumTransactionHistory;
 
 abstract class EthereumTransactionHistoryBase
     extends TransactionHistoryBase<EthereumTransactionInfo> with Store {
-  EthereumTransactionHistoryBase() {
+  EthereumTransactionHistoryBase({required this.walletInfo, required String password})
+      : _password = password {
     transactions = ObservableMap<String, EthereumTransactionInfo>();
   }
 
+  final WalletInfo walletInfo;
+  String _password;
+
+  Future<void> init() async => await _load();
+
   @override
   Future<void> save() async {
-    // TODO: implement
+    try {
+      final dirPath = await pathForWalletDir(name: walletInfo.name, type: walletInfo.type);
+      final path = '$dirPath/$transactionsHistoryFileName';
+      final data = json.encode({'transactions': transactions});
+      await writeData(path: path, password: _password, data: data);
+    } catch (e) {
+      print('Error while save bitcoin transaction history: ${e.toString()}');
+    }
   }
 
   @override
-  void addOne(EthereumTransactionInfo transaction) =>
-      transactions[transaction.id] = transaction;
+  void addOne(EthereumTransactionInfo transaction) => transactions[transaction.id] = transaction;
 
   @override
   void addMany(Map<String, EthereumTransactionInfo> transactions) =>
       this.transactions.addAll(transactions);
+
+  Future<Map<String, dynamic>> _read() async {
+    final dirPath = await pathForWalletDir(name: walletInfo.name, type: walletInfo.type);
+    final path = '$dirPath/$transactionsHistoryFileName';
+    final content = await read(path: path, password: _password);
+    return json.decode(content) as Map<String, dynamic>;
+  }
+
+  Future<void> _load() async {
+    try {
+      final content = await _read();
+      final txs = content['transactions'] as Map<String, dynamic>? ?? {};
+
+      txs.entries.forEach((entry) {
+        final val = entry.value;
+
+        if (val is Map<String, dynamic>) {
+          final tx = EthereumTransactionInfo.fromJson(val);
+          _update(tx);
+        }
+      });
+    } catch (e) {
+      print(e);
+    }
+  }
+
+  void _update(EthereumTransactionInfo transaction) => transactions[transaction.id] = transaction;
 }

cw_ethereum/lib/ethereum_transaction_info.dart

@@ -43,26 +43,29 @@ class EthereumTransactionInfo extends TransactionInfo {
 
   factory EthereumTransactionInfo.fromJson(Map<String, dynamic> data) {
     return EthereumTransactionInfo(
-        id: data['id'] as String,
-        height: data['height'] as int,
-        amount: data['amount'] as int,
-        fee: data['fee'] as int,
-        direction: parseTransactionDirectionFromInt(data['direction'] as int),
-        date: DateTime.fromMillisecondsSinceEpoch(data['date'] as int),
-        isPending: data['isPending'] as bool,
-        confirmations: data['confirmations'] as int);
+      id: data['id'] as String,
+      height: data['height'] as int,
+      amount: data['amount'] as int,
+      exponent: data['exponent'] as int,
+      fee: data['fee'] as int,
+      direction: parseTransactionDirectionFromInt(data['direction'] as int),
+      date: DateTime.fromMillisecondsSinceEpoch(data['date'] as int),
+      isPending: data['isPending'] as bool,
+      confirmations: data['confirmations'] as int,
+      tokenSymbol: data['tokenSymbol'] as String,
+    );
   }
 
-  Map<String, dynamic> toJson() {
-    final m = <String, dynamic>{};
-    m['id'] = id;
-    m['height'] = height;
-    m['amount'] = amount;
-    m['direction'] = direction.index;
-    m['date'] = date.millisecondsSinceEpoch;
-    m['isPending'] = isPending;
-    m['confirmations'] = confirmations;
-    m['fee'] = fee;
-    return m;
-  }
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'height': height,
+        'amount': amount,
+        'exponent': exponent,
+        'fee': fee,
+        'direction': direction.index,
+        'date': date.millisecondsSinceEpoch,
+        'isPending': isPending,
+        'confirmations': confirmations,
+        'tokenSymbol': tokenSymbol,
+      };
 }

cw_ethereum/lib/ethereum_wallet.dart

@@ -53,6 +53,7 @@ abstract class EthereumWalletBase
             {CryptoCurrency.eth: initialBalance ?? ERC20Balance(BigInt.zero)}),
         super(walletInfo) {
     this.walletInfo = walletInfo;
+    transactionHistory = EthereumTransactionHistory(walletInfo: walletInfo, password: password);
 
     if (!Hive.isAdapterRegistered(Erc20Token.typeId)) {
       Hive.registerAdapter(Erc20TokenAdapter());
@@ -86,9 +87,10 @@ abstract class EthereumWalletBase
   Future<void> init() async {
     erc20TokensBox = await Hive.openBox<Erc20Token>(Erc20Token.boxName);
     await walletAddresses.init();
+    await transactionHistory.init();
     _privateKey = await getPrivateKey(_mnemonic, _password);
-    transactionHistory = EthereumTransactionHistory();
     walletAddresses.address = _privateKey.address.toString();
+    await save();
   }
 
   @override
@@ -410,19 +412,17 @@ abstract class EthereumWalletBase
     final currentWalletFile = File(currentWalletPath);
 
     final currentDirPath = await pathForWalletDir(name: walletInfo.name, type: type);
-    // TODO: un-hash when transactions flow is implemented
-    // final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName');
+    final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName');
 
     // Copies current wallet files into new wallet name's dir and files
     if (currentWalletFile.existsSync()) {
       final newWalletPath = await pathForWallet(name: newWalletName, type: type);
       await currentWalletFile.copy(newWalletPath);
     }
-    // TODO: un-hash when transactions flow is implemented
-    // if (currentTransactionsFile.existsSync()) {
-    //   final newDirPath = await pathForWalletDir(name: newWalletName, type: type);
-    //   await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName');
-    // }
+    if (currentTransactionsFile.existsSync()) {
+      final newDirPath = await pathForWalletDir(name: newWalletName, type: type);
+      await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName');
+    }
 
     // Delete old name's dir and files
     await Directory(currentDirPath).delete(recursive: true);