feat: Pawchive account support and favorites synchronization (v2.3.6)

lib/backend/backend.dart

@@ -11,6 +11,8 @@ export 'models/cloud_media_link.dart';
 export 'models/download_task.dart';
 export 'models/downloaded_media.dart';
 export 'models/favorite.dart';
+export 'models/favorite_artist_item.dart';
+export 'models/pawchive_account.dart';
 export 'models/post.dart';
 export 'models/post_comment.dart';
 export 'models/provider_diagnostics.dart';
@@ -27,6 +29,7 @@ export 'services/download_manager_service.dart';
 export 'services/downloaded_media_service.dart';
 export 'services/favorite_service.dart';
 export 'services/feed_service.dart';
+export 'services/pawchive_sync_service.dart';
 export 'services/provider_check_service.dart';
 export 'services/search_service.dart';
 export 'services/tag_cache_service.dart';

lib/backend/models/favorite_artist_item.dart

@@ -0,0 +1,68 @@
+class FavoriteArtistItem {
+  const FavoriteArtistItem({
+    required this.id,
+    required this.service,
+    required this.providerId,
+    required this.name,
+    this.avatarUrl,
+  });
+
+  const FavoriteArtistItem.empty()
+      : id = '',
+        service = '',
+        providerId = '',
+        name = '',
+        avatarUrl = null;
+
+  final String id;
+  final String service;
+  final String providerId;
+  final String name;
+  final String? avatarUrl;
+
+  bool get isEmpty => id.isEmpty;
+  String get key => '$providerId:$service:$id';
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'service': service,
+        'providerId': providerId,
+        'name': name,
+        'avatarUrl': avatarUrl,
+      };
+
+  factory FavoriteArtistItem.fromJson(Map<String, dynamic> json) =>
+      FavoriteArtistItem(
+        id: (json['id'] ?? '').toString(),
+        service: (json['service'] ?? '').toString(),
+        providerId: (json['providerId'] ?? '').toString(),
+        name: (json['name'] ?? '').toString(),
+        avatarUrl: json['avatarUrl'] as String?,
+      );
+
+  FavoriteArtistItem copyWith({
+    String? id,
+    String? service,
+    String? providerId,
+    String? name,
+    String? avatarUrl,
+  }) {
+    return FavoriteArtistItem(
+      id: id ?? this.id,
+      service: service ?? this.service,
+      providerId: providerId ?? this.providerId,
+      name: name ?? this.name,
+      avatarUrl: avatarUrl ?? this.avatarUrl,
+    );
+  }
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is FavoriteArtistItem &&
+          runtimeType == other.runtimeType &&
+          key == other.key;
+
+  @override
+  int get hashCode => key.hashCode;
+}

lib/backend/models/pawchive_account.dart

@@ -0,0 +1,81 @@
+class PawchiveAccount {
+  const PawchiveAccount({
+    required this.id,
+    required this.username,
+    required this.sessionCookie,
+    this.baseUrl = 'https://pawchive.pw',
+    required this.createdAt,
+    this.lastSyncedAt,
+    this.isActive = true,
+    this.syncedArtistsCount = 0,
+  });
+
+  final String id;
+  final String username;
+  final String sessionCookie;
+  final String baseUrl;
+  final DateTime createdAt;
+  final DateTime? lastSyncedAt;
+  final bool isActive;
+  final int syncedArtistsCount;
+
+  PawchiveAccount copyWith({
+    String? id,
+    String? username,
+    String? sessionCookie,
+    String? baseUrl,
+    DateTime? createdAt,
+    DateTime? lastSyncedAt,
+    bool? isActive,
+    int? syncedArtistsCount,
+  }) {
+    return PawchiveAccount(
+      id: id ?? this.id,
+      username: username ?? this.username,
+      sessionCookie: sessionCookie ?? this.sessionCookie,
+      baseUrl: baseUrl ?? this.baseUrl,
+      createdAt: createdAt ?? this.createdAt,
+      lastSyncedAt: lastSyncedAt ?? this.lastSyncedAt,
+      isActive: isActive ?? this.isActive,
+      syncedArtistsCount: syncedArtistsCount ?? this.syncedArtistsCount,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'username': username,
+        'sessionCookie': sessionCookie,
+        'baseUrl': baseUrl,
+        'createdAt': createdAt.toIso8601String(),
+        'lastSyncedAt': lastSyncedAt?.toIso8601String(),
+        'isActive': isActive,
+        'syncedArtistsCount': syncedArtistsCount,
+      };
+
+  factory PawchiveAccount.fromJson(Map<String, dynamic> json) {
+    return PawchiveAccount(
+      id: (json['id'] ?? '').toString(),
+      username: (json['username'] ?? '').toString(),
+      sessionCookie: (json['sessionCookie'] ?? '').toString(),
+      baseUrl: (json['baseUrl'] ?? 'https://pawchive.pw').toString(),
+      createdAt: json['createdAt'] != null
+          ? DateTime.tryParse(json['createdAt'].toString()) ?? DateTime.now()
+          : DateTime.now(),
+      lastSyncedAt: json['lastSyncedAt'] != null
+          ? DateTime.tryParse(json['lastSyncedAt'].toString())
+          : null,
+      isActive: json['isActive'] as bool? ?? true,
+      syncedArtistsCount: (json['syncedArtistsCount'] as num?)?.toInt() ?? 0,
+    );
+  }
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is PawchiveAccount &&
+          runtimeType == other.runtimeType &&
+          id == other.id;
+
+  @override
+  int get hashCode => id.hashCode;
+}

lib/backend/services/pawchive_sync_service.dart

@@ -0,0 +1,369 @@
+import 'dart:convert';
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../core/http/dio_client.dart';
+import '../di/backend_providers.dart';
+import '../models/favorite_artist_item.dart';
+import '../models/pawchive_account.dart';
+import 'settings_service.dart';
+
+final pawchiveSyncServiceProvider = Provider<PawchiveSyncService>((ref) {
+  return PawchiveSyncService(dio: DioClient().dio);
+});
+
+class PawchiveSyncResult {
+  const PawchiveSyncResult({
+    required this.updatedSettings,
+    required this.newlyAddedToLocal,
+    required this.totalSyncedCount,
+    this.errorMessage,
+  });
+
+  final AppSettings updatedSettings;
+  final int newlyAddedToLocal;
+  final int totalSyncedCount;
+  final String? errorMessage;
+
+  bool get isSuccess => errorMessage == null;
+}
+
+class PawchiveSyncService {
+  PawchiveSyncService({Dio? dio}) : _dio = dio ?? Dio();
+
+  final Dio _dio;
+
+  static String _normalizeCookie(String rawCookie) {
+    var c = rawCookie.trim();
+    if (c.startsWith('session=')) {
+      c = c.substring('session='.length);
+    }
+    // strip semicolons if trailing
+    final semiIdx = c.indexOf(';');
+    if (semiIdx != -1) {
+      c = c.substring(0, semiIdx);
+    }
+    return c.trim();
+  }
+
+  /// Logs into Pawchive with username & password, returns new PawchiveAccount on success.
+  Future<PawchiveAccount> loginWithCredentials({
+    required String username,
+    required String password,
+    String baseUrl = 'https://pawchive.pw',
+  }) async {
+    final cleanUser = username.trim();
+    final cleanPass = password.trim();
+    if (cleanUser.isEmpty || cleanPass.isEmpty) {
+      throw ArgumentError('Логин и пароль не могут быть пустыми');
+    }
+
+    final normalizedBase = baseUrl.endsWith('/')
+        ? baseUrl.substring(0, baseUrl.length - 1)
+        : baseUrl;
+
+    try {
+      final response = await _dio.post<dynamic>(
+        '$normalizedBase/account/login',
+        data: {
+          'username': cleanUser,
+          'password': cleanPass,
+          'location': '/artists',
+        },
+        options: Options(
+          contentType: Headers.formUrlEncodedContentType,
+          followRedirects: false,
+          validateStatus: (status) => status != null && status < 500,
+          headers: const {
+            'User-Agent': 'Lunaris/2.0.1 Flutter local booru browser',
+            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+          },
+        ),
+      );
+
+      final redirectLocation = response.headers.value('location') ?? '';
+      final setCookies = response.headers['set-cookie'] ?? const [];
+
+      String? sessionValue;
+      for (final cookie in setCookies) {
+        final match = RegExp(r'session=([^;]+)').firstMatch(cookie);
+        if (match != null) {
+          sessionValue = match.group(1);
+          break;
+        }
+      }
+
+      if (sessionValue == null || sessionValue.isEmpty) {
+        throw StateError('Не удалось получить сессию. Проверьте данные для входа.');
+      }
+
+      // Check if redirect points back to login with flash error
+      if (redirectLocation.contains('/account/login')) {
+        throw StateError('Неверный логин или пароль');
+      }
+
+      // Verify session and fetch initial artists
+      final remoteArtists = await fetchRemoteFavoriteArtists(
+        baseUrl: normalizedBase,
+        sessionCookie: sessionValue,
+      );
+
+      return PawchiveAccount(
+        id: cleanUser.toLowerCase(),
+        username: cleanUser,
+        sessionCookie: sessionValue,
+        baseUrl: normalizedBase,
+        createdAt: DateTime.now(),
+        lastSyncedAt: DateTime.now(),
+        isActive: true,
+        syncedArtistsCount: remoteArtists.length,
+      );
+    } catch (e) {
+      if (e is StateError || e is ArgumentError) rethrow;
+      throw StateError('Ошибка входа в Pawchive: $e');
+    }
+  }
+
+  /// Validates session cookie directly and creates PawchiveAccount.
+  Future<PawchiveAccount> loginWithSession({
+    required String sessionCookie,
+    required String username,
+    String baseUrl = 'https://pawchive.pw',
+  }) async {
+    final cleanUser = username.trim().isEmpty ? 'Pawchive User' : username.trim();
+    final cleanCookie = _normalizeCookie(sessionCookie);
+    if (cleanCookie.isEmpty) {
+      throw ArgumentError('Сессионная кука не может быть пустой');
+    }
+
+    final normalizedBase = baseUrl.endsWith('/')
+        ? baseUrl.substring(0, baseUrl.length - 1)
+        : baseUrl;
+
+    try {
+      final remoteArtists = await fetchRemoteFavoriteArtists(
+        baseUrl: normalizedBase,
+        sessionCookie: cleanCookie,
+      );
+
+      return PawchiveAccount(
+        id: cleanUser.toLowerCase(),
+        username: cleanUser,
+        sessionCookie: cleanCookie,
+        baseUrl: normalizedBase,
+        createdAt: DateTime.now(),
+        lastSyncedAt: DateTime.now(),
+        isActive: true,
+        syncedArtistsCount: remoteArtists.length,
+      );
+    } catch (e) {
+      throw StateError('Сессия недействительна или истекла: $e');
+    }
+  }
+
+  /// Fetches favorite creators from Pawchive account.
+  Future<List<FavoriteArtistItem>> fetchRemoteFavoriteArtists({
+    required String baseUrl,
+    required String sessionCookie,
+  }) async {
+    final cleanCookie = _normalizeCookie(sessionCookie);
+    final normalizedBase = baseUrl.endsWith('/')
+        ? baseUrl.substring(0, baseUrl.length - 1)
+        : baseUrl;
+
+    final response = await _dio.get<dynamic>(
+      '$normalizedBase/account/favorites',
+      queryParameters: {'type': 'artist'},
+      options: Options(
+        headers: {
+          'Cookie': 'session=$cleanCookie',
+          'Accept': 'application/json',
+          'User-Agent': 'Lunaris/2.0.1 Flutter local booru browser',
+        },
+      ),
+    );
+
+    final data = response.data;
+    if (data is! List) return const [];
+
+    final list = <FavoriteArtistItem>[];
+    for (final raw in data) {
+      if (raw is! Map) continue;
+      final item = Map<String, dynamic>.from(raw);
+      final id = (item['id'] ?? '').toString();
+      final service = (item['service'] ?? '').toString();
+      final name = (item['name'] ?? id).toString();
+      if (id.isEmpty || service.isEmpty) continue;
+
+      final avatarUrl = '$normalizedBase/icons/$service/$id';
+      list.add(FavoriteArtistItem(
+        id: id,
+        service: service,
+        providerId: 'pawchive',
+        name: name,
+        avatarUrl: avatarUrl,
+      ));
+    }
+    return list;
+  }
+
+  /// Synchronizes a specific Pawchive account with current local AppSettings.
+  Future<PawchiveSyncResult> syncAccountFavorites({
+    required PawchiveAccount account,
+    required AppSettings settings,
+    bool pushLocalPawchiveArtists = false,
+  }) async {
+    try {
+      final remoteArtists = await fetchRemoteFavoriteArtists(
+        baseUrl: account.baseUrl,
+        sessionCookie: account.sessionCookie,
+      );
+
+      final currentFavorites = List<String>.from(settings.favoriteArtists);
+      final existingKeys = <String>{};
+      for (final raw in currentFavorites) {
+        try {
+          final parsed = FavoriteArtistItem.fromJson(
+            jsonDecode(raw) as Map<String, dynamic>,
+          );
+          existingKeys.add(parsed.key);
+        } catch (_) {}
+      }
+
+      var addedCount = 0;
+      for (final artist in remoteArtists) {
+        if (!existingKeys.contains(artist.key)) {
+          currentFavorites.insert(0, jsonEncode(artist.toJson()));
+          existingKeys.add(artist.key);
+          addedCount++;
+        }
+      }
+
+      // Optionally push local Pawchive artists to remote
+      if (pushLocalPawchiveArtists) {
+        final remoteKeys = remoteArtists.map((a) => a.key).toSet();
+        for (final raw in currentFavorites) {
+          try {
+            final parsed = FavoriteArtistItem.fromJson(
+              jsonDecode(raw) as Map<String, dynamic>,
+            );
+            if (parsed.providerId == 'pawchive' &&
+                !remoteKeys.contains(parsed.key)) {
+              await toggleRemoteFavorite(
+                account: account,
+                service: parsed.service,
+                artistId: parsed.id,
+                isFavorite: true,
+              );
+            }
+          } catch (_) {}
+        }
+      }
+
+      // Update account sync stats in settings
+      final updatedAccount = account.copyWith(
+        lastSyncedAt: DateTime.now(),
+        syncedArtistsCount: remoteArtists.length,
+      );
+
+      final updatedAccountsList = settings.parsedPawchiveAccounts.map((a) {
+        return a.id == updatedAccount.id ? updatedAccount : a;
+      }).toList();
+
+      final newSettings = settings.copyWith(
+        favoriteArtists: currentFavorites,
+        pawchiveAccounts:
+            updatedAccountsList.map((a) => jsonEncode(a.toJson())).toList(),
+      );
+
+      return PawchiveSyncResult(
+        updatedSettings: newSettings,
+        newlyAddedToLocal: addedCount,
+        totalSyncedCount: remoteArtists.length,
+      );
+    } catch (e) {
+      return PawchiveSyncResult(
+        updatedSettings: settings,
+        newlyAddedToLocal: 0,
+        totalSyncedCount: 0,
+        errorMessage: e.toString(),
+      );
+    }
+  }
+
+  /// Synchronizes ALL connected Pawchive accounts with local AppSettings.
+  Future<PawchiveSyncResult> syncAllAccounts({
+    required AppSettings settings,
+  }) async {
+    final accounts = settings.parsedPawchiveAccounts;
+    if (accounts.isEmpty) {
+      return PawchiveSyncResult(
+        updatedSettings: settings,
+        newlyAddedToLocal: 0,
+        totalSyncedCount: 0,
+        errorMessage: 'Нет добавленных аккаунтов Pawchive',
+      );
+    }
+
+    var runningSettings = settings;
+    var totalAdded = 0;
+    var totalSynced = 0;
+    String? firstError;
+
+    for (final account in accounts) {
+      final res = await syncAccountFavorites(
+        account: account,
+        settings: runningSettings,
+      );
+      if (res.isSuccess) {
+        runningSettings = res.updatedSettings;
+        totalAdded += res.newlyAddedToLocal;
+        totalSynced += res.totalSyncedCount;
+      } else {
+        firstError ??= res.errorMessage;
+      }
+    }
+
+    return PawchiveSyncResult(
+      updatedSettings: runningSettings,
+      newlyAddedToLocal: totalAdded,
+      totalSyncedCount: totalSynced,
+      errorMessage: firstError,
+    );
+  }
+
+  /// Toggles favorite creator on Pawchive server (POST or DELETE).
+  Future<bool> toggleRemoteFavorite({
+    required PawchiveAccount account,
+    required String service,
+    required String artistId,
+    required bool isFavorite,
+  }) async {
+    final cleanCookie = _normalizeCookie(account.sessionCookie);
+    final normalizedBase = account.baseUrl.endsWith('/')
+        ? account.baseUrl.substring(0, account.baseUrl.length - 1)
+        : account.baseUrl;
+
+    final path = '$normalizedBase/favorites/creator/$service/$artistId';
+    final options = Options(
+      headers: {
+        'Cookie': 'session=$cleanCookie',
+        'User-Agent': 'Lunaris/2.0.1 Flutter local booru browser',
+      },
+      validateStatus: (status) =>
+          status != null && (status == 200 || status == 201 || status == 204),
+    );
+
+    try {
+      if (isFavorite) {
+        final response = await _dio.post<dynamic>(path, options: options);
+        return response.statusCode != null && response.statusCode! < 300;
+      } else {
+        final response = await _dio.delete<dynamic>(path, options: options);
+        return response.statusCode != null && response.statusCode! < 300;
+      }
+    } catch (_) {
+      return false;
+    }
+  }
+}

lib/backend/services/settings_service.dart

@@ -7,6 +7,7 @@ import '../../core/database/database_service.dart';
 import '../../core/errors/failure.dart';
 import '../../core/utils/result.dart';
 import '../models/content_provider_config.dart';
+import '../models/pawchive_account.dart';
 import '../models/provider_diagnostics.dart';
 import '../repositories/provider_repository.dart';
 
@@ -49,6 +50,7 @@ class AppSettings {
     required this.lastFeedTopPeriod,
     required this.lastFeedScrollOffset,
     this.favoriteArtists = const [],
+    this.pawchiveAccounts = const [],
     this.skippedUpdateVersion,
     this.lastUpdateCheckAt,
     this.defaultRatingFilter,
@@ -63,6 +65,7 @@ class AppSettings {
   });
 
   final List<String> favoriteArtists;
+  final List<String> pawchiveAccounts;
   final List<String> enabledProviderIds;
   final bool nsfwEnabled;
   final int cacheTtlHours;
@@ -118,6 +121,7 @@ class AppSettings {
     cacheMaxItems: 2000,
     providerPriority: {'gelbooru': 0, 'rule34': 1, 'realbooru': 2},
     favoriteArtists: [],
+    pawchiveAccounts: [],
     themeMode: 'dark',
     languageCode: 'ru',
     appSeedColor: 0xFFE84D8A,
@@ -200,6 +204,7 @@ class AppSettings {
     String? lastFeedRating,
     bool clearLastFeedRating = false,
     List<String>? favoriteArtists,
+    List<String>? pawchiveAccounts,
     bool? amoledMode,
     bool? useDynamicColor,
     String? gridMode,
@@ -210,6 +215,7 @@ class AppSettings {
   }) {
     return AppSettings(
       favoriteArtists: favoriteArtists ?? this.favoriteArtists,
+      pawchiveAccounts: pawchiveAccounts ?? this.pawchiveAccounts,
       enabledProviderIds: enabledProviderIds ?? this.enabledProviderIds,
       nsfwEnabled: nsfwEnabled ?? this.nsfwEnabled,
       cacheTtlHours: cacheTtlHours ?? this.cacheTtlHours,
@@ -269,6 +275,7 @@ class AppSettings {
 
   Map<String, dynamic> toJson() => {
         'favoriteArtists': favoriteArtists,
+        'pawchiveAccounts': pawchiveAccounts,
         'enabledProviderIds': enabledProviderIds,
         'nsfwEnabled': nsfwEnabled,
         'cacheTtlHours': cacheTtlHours,
@@ -411,6 +418,9 @@ class AppSettings {
         favoriteArtists: List<String>.from(
           (json['favoriteArtists'] as List?) ?? defaults.favoriteArtists,
         ),
+        pawchiveAccounts: List<String>.from(
+          (json['pawchiveAccounts'] as List?) ?? defaults.pawchiveAccounts,
+        ),
         skippedUpdateVersion: json['skippedUpdateVersion'] as String?,
         lastUpdateCheckAt: json['lastUpdateCheckAt'] as String?,
         defaultRatingFilter: json['defaultRatingFilter'] as String?,
@@ -428,6 +438,25 @@ class AppSettings {
         tagCacheLimit: (json['tagCacheLimit'] as num?)?.toInt() ??
             defaults.tagCacheLimit,
       );
+
+  List<PawchiveAccount> get parsedPawchiveAccounts {
+    final list = <PawchiveAccount>[];
+    for (final raw in pawchiveAccounts) {
+      try {
+        final decoded = jsonDecode(raw);
+        if (decoded is Map<String, dynamic>) {
+          list.add(PawchiveAccount.fromJson(decoded));
+        }
+      } catch (_) {}
+    }
+    return list;
+  }
+
+  PawchiveAccount? get activePawchiveAccount {
+    final accounts = parsedPawchiveAccounts;
+    if (accounts.isEmpty) return null;
+    return accounts.firstWhere((a) => a.isActive, orElse: () => accounts.first);
+  }
 }
 
 class SettingsService {