prasule/lib/api/walletmanager.dart

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import 'dart:convert';
import 'dart:io';
import 'package:path_provider/path_provider.dart';
import 'package:prasule/api/wallet.dart';
class WalletManager {
static Future<List<Wallet>> listWallets() async {
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var path =
Directory("${(await getApplicationDocumentsDirectory()).path}/wallets");
if (!path.existsSync()) {
path.createSync();
}
var wallets = <Wallet>[];
for (var w in path.listSync().map((e) => e.path.split("/").last).toList()) {
wallets.add(await loadWallet(w));
}
return wallets;
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}
static Future<Wallet> loadWallet(String name) async {
var path =
Directory("${(await getApplicationDocumentsDirectory()).path}/wallets");
var wallet = File("${path.path}/$name");
if (!path.existsSync()) {
path.createSync();
}
if (!wallet.existsSync()) {
return Future.error("Wallet does not exist");
}
return Wallet.fromJson(jsonDecode(wallet.readAsStringSync()));
}
static Future<bool> saveWallet(Wallet w) async {
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var path =
Directory("${(await getApplicationDocumentsDirectory()).path}/wallets");
var wallet = File("${path.path}/${w.name}");
if (!path.existsSync()) {
path.createSync();
}
if (wallet.existsSync()) return false;
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wallet.writeAsStringSync(jsonEncode(w.toJson()));
return true;
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}
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static Future<void> deleteWallet(Wallet w) async {
var path =
Directory("${(await getApplicationDocumentsDirectory()).path}/wallets");
var wallet = File("${path.path}/${w.name}");
wallet.deleteSync();
}
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}