Initial Flutter booru app

lib/backend/models/collection.dart

@@ -0,0 +1,34 @@
+class Collection {
+  const Collection({
+    required this.id,
+    required this.name,
+    this.description,
+    this.coverUrl,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  final String id;
+  final String name;
+  final String? description;
+  final String? coverUrl;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  Collection copyWith({
+    String? id,
+    String? name,
+    String? description,
+    String? coverUrl,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) =>
+      Collection(
+        id: id ?? this.id,
+        name: name ?? this.name,
+        description: description ?? this.description,
+        coverUrl: coverUrl ?? this.coverUrl,
+        createdAt: createdAt ?? this.createdAt,
+        updatedAt: updatedAt ?? this.updatedAt,
+      );
+}

lib/backend/models/content_provider_config.dart

@@ -0,0 +1,81 @@
+class ContentProviderConfig {
+  const ContentProviderConfig({
+    required this.id,
+    required this.name,
+    required this.baseUrl,
+    required this.apiType,
+    required this.enabled,
+    required this.priority,
+    required this.timeoutSeconds,
+    required this.customHeaders,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  final String id;
+  final String name;
+  final String baseUrl;
+  final String apiType;
+  final bool enabled;
+  final int priority;
+  final int timeoutSeconds;
+  final Map<String, String> customHeaders;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  ContentProviderConfig copyWith({
+    String? id,
+    String? name,
+    String? baseUrl,
+    String? apiType,
+    bool? enabled,
+    int? priority,
+    int? timeoutSeconds,
+    Map<String, String>? customHeaders,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return ContentProviderConfig(
+      id: id ?? this.id,
+      name: name ?? this.name,
+      baseUrl: baseUrl ?? this.baseUrl,
+      apiType: apiType ?? this.apiType,
+      enabled: enabled ?? this.enabled,
+      priority: priority ?? this.priority,
+      timeoutSeconds: timeoutSeconds ?? this.timeoutSeconds,
+      customHeaders: customHeaders ?? this.customHeaders,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'name': name,
+        'baseUrl': baseUrl,
+        'apiType': apiType,
+        'enabled': enabled,
+        'priority': priority,
+        'timeoutSeconds': timeoutSeconds,
+        'customHeaders': customHeaders,
+        'createdAt': createdAt.toIso8601String(),
+        'updatedAt': updatedAt.toIso8601String(),
+      };
+
+  factory ContentProviderConfig.fromJson(Map<String, dynamic> json) {
+    return ContentProviderConfig(
+      id: json['id'] as String,
+      name: json['name'] as String,
+      baseUrl: json['baseUrl'] as String,
+      apiType: json['apiType'] as String,
+      enabled: (json['enabled'] as bool?) ?? true,
+      priority: (json['priority'] as num?)?.toInt() ?? 0,
+      timeoutSeconds: (json['timeoutSeconds'] as num?)?.toInt() ?? 20,
+      customHeaders: Map<String, String>.from(
+        (json['customHeaders'] as Map?) ?? const {},
+      ),
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+    );
+  }
+}

lib/backend/models/favorite.dart

@@ -0,0 +1,13 @@
+class Favorite {
+  const Favorite({
+    required this.id,
+    required this.postId,
+    required this.providerId,
+    required this.savedAt,
+  });
+
+  final String id;
+  final String postId;
+  final String providerId;
+  final DateTime savedAt;
+}

lib/backend/models/post.dart

@@ -0,0 +1,70 @@
+class Post {
+  const Post({
+    required this.id,
+    required this.providerId,
+    required this.providerName,
+    required this.previewUrl,
+    required this.sampleUrl,
+    required this.fileUrl,
+    required this.tags,
+    required this.rating,
+    required this.width,
+    required this.height,
+    this.source,
+    required this.createdAt,
+    required this.fileType,
+    required this.score,
+  });
+
+  final String id;
+  final String providerId;
+  final String providerName;
+  final String previewUrl;
+  final String sampleUrl;
+  final String fileUrl;
+  final List<String> tags;
+  final String rating;
+  final int width;
+  final int height;
+  final String? source;
+  final DateTime createdAt;
+  final String fileType;
+  final int score;
+
+  String get cacheKey => '$providerId:$id';
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'providerId': providerId,
+        'providerName': providerName,
+        'previewUrl': previewUrl,
+        'sampleUrl': sampleUrl,
+        'fileUrl': fileUrl,
+        'tags': tags,
+        'rating': rating,
+        'width': width,
+        'height': height,
+        'source': source,
+        'createdAt': createdAt.toIso8601String(),
+        'fileType': fileType,
+        'score': score,
+      };
+
+  factory Post.fromJson(Map<String, dynamic> json) => Post(
+        id: json['id'].toString(),
+        providerId: json['providerId'] as String,
+        providerName: json['providerName'] as String,
+        previewUrl: (json['previewUrl'] as String?) ?? '',
+        sampleUrl: (json['sampleUrl'] as String?) ?? '',
+        fileUrl: (json['fileUrl'] as String?) ?? '',
+        tags: List<String>.from((json['tags'] as List?) ?? const []),
+        rating: (json['rating'] as String?) ?? 'unknown',
+        width: (json['width'] as num?)?.toInt() ?? 0,
+        height: (json['height'] as num?)?.toInt() ?? 0,
+        source: json['source'] as String?,
+        createdAt: DateTime.tryParse((json['createdAt'] as String?) ?? '') ??
+            DateTime.fromMillisecondsSinceEpoch(0),
+        fileType: (json['fileType'] as String?) ?? 'unknown',
+        score: (json['score'] as num?)?.toInt() ?? 0,
+      );
+}

lib/backend/models/provider_health.dart

@@ -0,0 +1,42 @@
+enum ProviderStatus { unknown, online, offline }
+
+class ProviderHealth {
+  const ProviderHealth({
+    required this.providerId,
+    required this.status,
+    required this.pingMs,
+    required this.lastCheckedAt,
+    this.errorMessage,
+    this.apiVersion,
+  });
+
+  final String providerId;
+  final ProviderStatus status;
+  final int pingMs;
+  final DateTime lastCheckedAt;
+  final String? errorMessage;
+  final String? apiVersion;
+
+  bool get isOnline => status == ProviderStatus.online;
+
+  Map<String, dynamic> toJson() => {
+        'providerId': providerId,
+        'status': status.name,
+        'pingMs': pingMs,
+        'lastCheckedAt': lastCheckedAt.toIso8601String(),
+        'errorMessage': errorMessage,
+        'apiVersion': apiVersion,
+      };
+
+  factory ProviderHealth.fromJson(Map<String, dynamic> json) => ProviderHealth(
+        providerId: json['providerId'] as String,
+        status: ProviderStatus.values.firstWhere(
+          (value) => value.name == json['status'],
+          orElse: () => ProviderStatus.unknown,
+        ),
+        pingMs: (json['pingMs'] as num?)?.toInt() ?? 0,
+        lastCheckedAt: DateTime.parse(json['lastCheckedAt'] as String),
+        errorMessage: json['errorMessage'] as String?,
+        apiVersion: json['apiVersion'] as String?,
+      );
+}

lib/backend/models/search_history.dart

@@ -0,0 +1,15 @@
+class SearchHistory {
+  const SearchHistory({
+    required this.id,
+    required this.query,
+    required this.tags,
+    required this.searchedAt,
+    required this.resultCount,
+  });
+
+  final String id;
+  final String query;
+  final List<String> tags;
+  final DateTime searchedAt;
+  final int resultCount;
+}

lib/backend/models/top_period_filter.dart

@@ -0,0 +1,15 @@
+enum TopPeriodFilter {
+  none,
+  month,
+  year,
+  allTime;
+
+  String get label {
+    return switch (this) {
+      TopPeriodFilter.none => 'Latest',
+      TopPeriodFilter.month => 'Top month',
+      TopPeriodFilter.year => 'Top year',
+      TopPeriodFilter.allTime => 'Top all time',
+    };
+  }
+}