init

lib/login.dart

@@ -0,0 +1,71 @@
+import 'dart:convert';
+
+import 'package:flutter/widgets.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:ndk/domain_layer/entities/account.dart';
+import 'package:ndk/shared/nips/nip01/bip340.dart';
+import 'package:ndk/shared/nips/nip19/nip19.dart';
+
+class Account {
+  final AccountType type;
+  final String pubkey;
+  final String? privateKey;
+
+  Account._({required this.type, required this.pubkey, this.privateKey});
+
+  static Account nip19(String key) {
+    final keyData = Nip19.decode(key);
+    final pubkey =
+        Nip19.isKey("nsec", key) ? Bip340.getPublicKey(keyData) : keyData;
+    final privateKey = Nip19.isKey("npub", key) ? null : keyData;
+    return Account._(
+        type: AccountType.privateKey, pubkey: pubkey, privateKey: privateKey);
+  }
+
+  static Account privateKeyHex(String key) {
+    return Account._(
+        type: AccountType.privateKey,
+        privateKey: key,
+        pubkey: Bip340.getPublicKey(key));
+  }
+
+  static Account externalPublicKeyHex(String key) {
+    return Account._(type: AccountType.externalSigner, pubkey: key);
+  }
+
+  static Map<String, dynamic> toJson(Account? acc) => {
+        "type": acc?.type.name,
+        "pubKey": acc?.pubkey,
+        "privateKey": acc?.privateKey
+      };
+
+  static Account? fromJson(Map<String, dynamic> json) {
+    if (json.length > 2 && json.containsKey("pubKey")) {
+      return Account._(
+          type: AccountType.values
+              .firstWhere((v) => v.toString().endsWith(json["type"] as String)),
+          pubkey: json["pubKey"],
+          privateKey: json["privateKey"]);
+    }
+    return null;
+  }
+}
+
+class LoginData extends ValueNotifier<Account?> {
+  final _storage = FlutterSecureStorage();
+  static const String _storageKey = "accounts";
+
+  LoginData() : super(null) {
+    super.addListener(() async {
+      final data = json.encode(Account.toJson(value));
+      await _storage.write(key: _storageKey, value: data);
+    });
+  }
+
+  Future<void> load() async {
+    final acc = await _storage.read(key: _storageKey);
+    if (acc != null) {
+      super.value = Account.fromJson(json.decode(acc));
+    }
+  }
+}