feat: device services implemented

apps/mobile/packages/core/lib/core.dart

@@ -20,3 +20,9 @@ export 'src/services/api_service/core_api_services/llm/llm_service.dart';
 export 'src/services/api_service/core_api_services/llm/llm_response.dart';
 export 'src/services/api_service/core_api_services/verification/verification_service.dart';
 export 'src/services/api_service/core_api_services/verification/verification_response.dart';
+
+// Device Services
+export 'src/services/device/camera/camera_service.dart';
+export 'src/services/device/gallery/gallery_service.dart';
+export 'src/services/device/file/file_picker_service.dart';
+export 'src/services/device/file_upload/device_file_upload_service.dart';

apps/mobile/packages/core/lib/src/services/device/camera/camera_service.dart

@@ -0,0 +1,23 @@
+import 'package:image_picker/image_picker.dart';
+import 'package:krow_domain/krow_domain.dart';
+
+/// Service for capturing photos and videos using the device camera.
+class CameraService extends BaseDeviceService {
+  /// Creates a [CameraService].
+  CameraService(this._picker);
+
+  final ImagePicker _picker;
+
+  /// Captures a photo using the camera.
+  ///
+  /// Returns the path to the captured image, or null if cancelled.
+  Future<String?> takePhoto() async {
+    return action(() async {
+      final XFile? file = await _picker.pickImage(
+        source: ImageSource.camera,
+        imageQuality: 80,
+      );
+      return file?.path;
+    });
+  }
+}

apps/mobile/packages/core/lib/src/services/device/file/file_picker_service.dart

@@ -0,0 +1,22 @@
+import 'package:file_picker/file_picker.dart';
+import 'package:krow_domain/krow_domain.dart';
+
+/// Service for picking files from the device filesystem.
+class FilePickerService extends BaseDeviceService {
+  /// Creates a [FilePickerService].
+  const FilePickerService();
+
+  /// Picks a single file from the device.
+  ///
+  /// Returns the path to the selected file, or null if cancelled.
+  Future<String?> pickFile({List<String>? allowedExtensions}) async {
+    return action(() async {
+      final FilePickerResult? result = await FilePicker.platform.pickFiles(
+        type: allowedExtensions != null ? FileType.custom : FileType.any,
+        allowedExtensions: allowedExtensions,
+      );
+
+      return result?.files.single.path;
+    });
+  }
+}

apps/mobile/packages/core/lib/src/services/device/file_upload/device_file_upload_service.dart

@@ -0,0 +1,59 @@
+import 'package:krow_domain/krow_domain.dart';
+import '../camera/camera_service.dart';
+import '../gallery/gallery_service.dart';
+import '../../api_service/core_api_services/file_upload/file_upload_service.dart';
+
+/// Orchestrator service that combines device picking and network uploading.
+///
+/// This provides a simplified entry point for features to "pick and upload"
+/// in a single call.
+class DeviceFileUploadService extends BaseDeviceService {
+  /// Creates a [DeviceFileUploadService].
+  DeviceFileUploadService({
+    required this.cameraService,
+    required this.galleryService,
+    required this.apiUploadService,
+  });
+
+  final CameraService cameraService;
+  final GalleryService galleryService;
+  final FileUploadService apiUploadService;
+
+  /// Captures a photo from the camera and uploads it immediately.
+  Future<ApiResponse?> uploadFromCamera({
+    required String fileName,
+    FileVisibility visibility = FileVisibility.private,
+    String? category,
+  }) async {
+    return action(() async {
+      final String? path = await cameraService.takePhoto();
+      if (path == null) return null;
+
+      return apiUploadService.uploadFile(
+        filePath: path,
+        fileName: fileName,
+        visibility: visibility,
+        category: category,
+      );
+    });
+  }
+
+  /// Picks an image from the gallery and uploads it immediately.
+  Future<ApiResponse?> uploadFromGallery({
+    required String fileName,
+    FileVisibility visibility = FileVisibility.private,
+    String? category,
+  }) async {
+    return action(() async {
+      final String? path = await galleryService.pickImage();
+      if (path == null) return null;
+
+      return apiUploadService.uploadFile(
+        filePath: path,
+        fileName: fileName,
+        visibility: visibility,
+        category: category,
+      );
+    });
+  }
+}

apps/mobile/packages/core/lib/src/services/device/gallery/gallery_service.dart

@@ -0,0 +1,23 @@
+import 'package:image_picker/image_picker.dart';
+import 'package:krow_domain/krow_domain.dart';
+
+/// Service for picking media from the device gallery.
+class GalleryService extends BaseDeviceService {
+  /// Creates a [GalleryService].
+  GalleryService(this._picker);
+
+  final ImagePicker _picker;
+
+  /// Picks an image from the gallery.
+  ///
+  /// Returns the path to the selected image, or null if cancelled.
+  Future<String?> pickImage() async {
+    return action(() async {
+      final XFile? file = await _picker.pickImage(
+        source: ImageSource.gallery,
+        imageQuality: 80,
+      );
+      return file?.path;
+    });
+  }
+}

apps/mobile/packages/core/pubspec.yaml

@@ -22,3 +22,6 @@ dependencies:
   equatable: ^2.0.8
   flutter_modular: ^6.4.1
   dio: ^5.9.1
+  image_picker: ^1.1.2
+  path_provider: ^2.1.3
+  file_picker: ^8.1.7