neon: make LoginQrcode and Account a Credentials

packages/neon/neon/lib/models.dart

@@ -1,3 +1,3 @@
-export 'package:neon/src/models/account.dart';
+export 'package:neon/src/models/account.dart' hide Credentials, LoginQrcode;
 export 'package:neon/src/models/app_implementation.dart';
 export 'package:neon/src/models/notifications_interface.dart';

packages/neon/neon/lib/src/models/account.dart

@@ -2,15 +2,29 @@ import 'dart:convert';
 
 import 'package:collection/collection.dart';
 import 'package:crypto/crypto.dart';
-import 'package:flutter/foundation.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:meta/meta.dart';
 import 'package:nextcloud/nextcloud.dart';
 
 part 'account.g.dart';
 
+/// Credentials interface
+@internal
+@immutable
+abstract interface class Credentials {
+  /// Url of the server
+  abstract final String serverURL;
+
+  /// Username
+  abstract final String username;
+
+  /// Password
+  abstract final String? password;
+}
+
 @JsonSerializable()
 @immutable
-class Account {
+class Account implements Credentials {
   Account({
     required this.serverURL,
     required this.loginName,
@@ -29,9 +43,12 @@ class Account {
   factory Account.fromJson(final Map<String, dynamic> json) => _$AccountFromJson(json);
   Map<String, dynamic> toJson() => _$AccountToJson(this);
 
+  @override
   final String serverURL;
   final String loginName;
+  @override
   final String username;
+  @override
   final String? password;
   final String? userAgent;
 
@@ -76,3 +93,105 @@ extension AccountFind on Iterable<Account> {
   Account? tryFind(final String? accountID) => firstWhereOrNull((final account) => account.id == accountID);
   Account find(final String accountID) => firstWhere((final account) => account.id == accountID);
 }
+
+/// Qrcode Login credentials.
+///
+/// The Credentials as provided by the server when manually creating an app
+/// password.
+@internal
+@immutable
+class LoginQrcode implements Credentials {
+  /// Creates a new LoginQrcode object.
+  @visibleForTesting
+  const LoginQrcode({
+    required this.serverURL,
+    required this.username,
+    required this.password,
+  });
+
+  @override
+  final String serverURL;
+  @override
+  final String username;
+  @override
+  final String password;
+
+  /// Pattern matching the full Qrcode content.
+  static final _loginQrcodeUrlRegex = RegExp(r'^nc://login/user:(.*)&password:(.*)&server:(.*)$');
+
+  /// Pattern matching the path part of the Qrcode.
+  ///
+  /// This is used when launching the app through an intent.
+  static final _loginQrcodePathRegex = RegExp(r'^/user:(.*)&password:(.*)&server:(.*)$');
+
+  /// Creates a new `LoginQrcode` object by parsing a url string.
+  ///
+  /// If the [url] string is not valid as a LoginQrcode a [FormatException] is
+  /// thrown.
+  ///
+  /// Example:
+  /// ```dart
+  /// final loginQrcode =
+  ///     LoginQrcode.parse('nc://login/user:JohnDoe&password:super_secret&server:example.com');
+  /// print(loginQrcode.serverURL); // JohnDoe
+  /// print(loginQrcode.username); // super_secret
+  /// print(loginQrcode.password); // example.com
+  ///
+  /// LoginQrcode.parse('::Not valid LoginQrcode::'); // Throws FormatException.
+  /// ```
+  static LoginQrcode parse(final String url) {
+    for (final regex in [_loginQrcodeUrlRegex, _loginQrcodePathRegex]) {
+      final matches = regex.allMatches(url);
+      if (matches.isEmpty) {
+        continue;
+      }
+
+      final match = matches.single;
+      if (match.groupCount != 3) {
+        continue;
+      }
+
+      return LoginQrcode(
+        serverURL: match.group(3)!,
+        username: match.group(1)!,
+        password: match.group(2)!,
+      );
+    }
+
+    throw const FormatException();
+  }
+
+  /// Creates a new `LoginQrcode` object by parsing a url string.
+  ///
+  /// Returns `null` if the [url] string is not valid as a LoginQrcode.
+  ///
+  /// Example:
+  /// ```dart
+  /// final loginQrcode =
+  ///     LoginQrcode.parse('nc://login/user:JohnDoe&password:super_secret&server:example.com');
+  /// print(loginQrcode.serverURL); // JohnDoe
+  /// print(loginQrcode.username); // super_secret
+  /// print(loginQrcode.password); // example.com
+  ///
+  /// final notLoginQrcode = LoginQrcode.tryParse('::Not valid LoginQrcode::');
+  /// print(notLoginQrcode); // null
+  /// ```
+  static LoginQrcode? tryParse(final String url) {
+    try {
+      return parse(url);
+    } on FormatException {
+      return null;
+    }
+  }
+
+  @override
+  bool operator ==(final Object other) =>
+      other is LoginQrcode && other.serverURL == serverURL && other.username == username && other.password == password;
+
+  @override
+  int get hashCode => Object.hashAll([
+        serverURL,
+        username,
+        password,
+      ]);
+}

packages/neon/neon/lib/src/pages/login_qrcode.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_zxing/flutter_zxing.dart';
+import 'package:neon/src/models/account.dart';
 import 'package:neon/src/router.dart';
 import 'package:neon/src/utils/exceptions.dart';
-import 'package:neon/src/utils/login_qrcode.dart';
 import 'package:neon/src/widgets/exception.dart';
 
 class LoginQrcodePage extends StatefulWidget {
@@ -41,8 +41,8 @@ class _LoginQrcodePageState extends State<LoginQrcodePage> {
               }
 
               LoginCheckServerStatusRoute.withCredentials(
-                serverUrl: match.server,
-                loginName: match.user,
+                serverUrl: match.serverURL,
+                loginName: match.username,
                 password: match.password,
               ).pushReplacement(context);
             } catch (e, s) {

packages/neon/neon/lib/src/router.dart

@@ -17,7 +17,6 @@ import 'package:neon/src/pages/login_flow.dart';
 import 'package:neon/src/pages/login_qrcode.dart';
 import 'package:neon/src/pages/nextcloud_app_settings.dart';
 import 'package:neon/src/pages/settings.dart';
-import 'package:neon/src/utils/login_qrcode.dart';
 import 'package:neon/src/utils/stream_listenable.dart';
 import 'package:provider/provider.dart';
 
@@ -36,8 +35,8 @@ class AppRouter extends GoRouter {
             final loginQrcode = LoginQrcode.tryParse(state.location);
             if (loginQrcode != null) {
               return LoginCheckServerStatusRoute.withCredentials(
-                serverUrl: loginQrcode.server,
-                loginName: loginQrcode.user,
+                serverUrl: loginQrcode.serverURL,
+                loginName: loginQrcode.username,
                 password: loginQrcode.password,
               ).location;
             }

packages/neon/neon/lib/src/utils/login_qrcode.dart

@@ -1,47 +0,0 @@
-import 'package:meta/meta.dart';
-
-@internal
-class LoginQrcode {
-  LoginQrcode({
-    required this.server,
-    required this.user,
-    required this.password,
-  });
-
-  static final _loginQrcodeUrlRegex = RegExp(r'^nc://login/user:(.*)&password:(.*)&server:(.*)$');
-  static final _loginQrcodePathRegex = RegExp(r'^/user:(.*)&password:(.*)&server:(.*)$');
-
-  static LoginQrcode parse(final String url) {
-    for (final regex in [_loginQrcodeUrlRegex, _loginQrcodePathRegex]) {
-      final matches = regex.allMatches(url);
-      if (matches.isEmpty) {
-        continue;
-      }
-
-      final match = matches.single;
-      if (match.groupCount != 3) {
-        continue;
-      }
-
-      return LoginQrcode(
-        server: match.group(3)!,
-        user: match.group(1)!,
-        password: match.group(2)!,
-      );
-    }
-
-    throw const FormatException();
-  }
-
-  static LoginQrcode? tryParse(final String url) {
-    try {
-      return parse(url);
-    } on FormatException {
-      return null;
-    }
-  }
-
-  final String server;
-  final String user;
-  final String password;
-}

packages/neon/neon/test/account_test.dart

@@ -0,0 +1,25 @@
+import 'package:neon/src/models/account.dart';
+import 'package:test/test.dart';
+
+void main() {
+  const qrCodePath = '/user:JohnDoe&password:super_secret&server:example.com';
+  const qrCode = 'nc://login$qrCodePath';
+  const invalidUrl = '::Not valid LoginQrcode::';
+  const credentials = LoginQrcode(
+    serverURL: 'example.com',
+    username: 'JohnDoe',
+    password: 'super_secret',
+  );
+
+  group('LoginQrcode', () {
+    test('parse', () {
+      expect(LoginQrcode.tryParse(qrCode), equals(credentials));
+      expect(LoginQrcode.tryParse(qrCodePath), equals(credentials));
+      expect(LoginQrcode.tryParse(invalidUrl), null);
+    });
+
+    test('equality', () {
+      expect(credentials, equals(credentials));
+    });
+  });
+}