runable

lib/features/scanner/data/datasources/scanner_remote_datasource.dart

@@ -0,0 +1,148 @@
+import '../../../../core/network/api_client.dart';
+import '../../../../core/errors/exceptions.dart';
+import '../models/save_request_model.dart';
+
+/// Abstract remote data source for scanner operations
+abstract class ScannerRemoteDataSource {
+  /// Save scan data to remote server
+  Future<void> saveScan(SaveRequestModel request);
+
+  /// Get scan data from remote server (optional for future use)
+  Future<Map<String, dynamic>?> getScanData(String barcode);
+}
+
+/// Implementation of ScannerRemoteDataSource using HTTP API
+class ScannerRemoteDataSourceImpl implements ScannerRemoteDataSource {
+  final ApiClient apiClient;
+
+  ScannerRemoteDataSourceImpl({required this.apiClient});
+
+  @override
+  Future<void> saveScan(SaveRequestModel request) async {
+    try {
+      // Validate request before sending
+      if (!request.isValid) {
+        throw ValidationException('Invalid request data: ${request.validationErrors.join(', ')}');
+      }
+
+      final response = await apiClient.post(
+        '/api/scans',
+        data: request.toJson(),
+      );
+
+      // Check if the response indicates success
+      if (response.statusCode == null ||
+          (response.statusCode! < 200 || response.statusCode! >= 300)) {
+        final errorMessage = response.data?['message'] ?? 'Unknown server error';
+        throw ServerException('Failed to save scan: $errorMessage');
+      }
+
+      // Log successful save (in production, use proper logging)
+      // print('Scan saved successfully: ${request.barcode}');
+
+    } on ValidationException {
+      rethrow;
+    } on ServerException {
+      rethrow;
+    } on NetworkException {
+      rethrow;
+    } catch (e) {
+      // Handle any unexpected errors
+      throw ServerException('Unexpected error occurred while saving scan: ${e.toString()}');
+    }
+  }
+
+  @override
+  Future<Map<String, dynamic>?> getScanData(String barcode) async {
+    try {
+      if (barcode.trim().isEmpty) {
+        throw const ValidationException('Barcode cannot be empty');
+      }
+
+      final response = await apiClient.get(
+        '/api/scans/$barcode',
+      );
+
+      if (response.statusCode == 404) {
+        // Scan not found is not an error, just return null
+        return null;
+      }
+
+      if (response.statusCode == null ||
+          (response.statusCode! < 200 || response.statusCode! >= 300)) {
+        final errorMessage = response.data?['message'] ?? 'Unknown server error';
+        throw ServerException('Failed to get scan data: $errorMessage');
+      }
+
+      return response.data as Map<String, dynamic>?;
+
+    } on ValidationException {
+      rethrow;
+    } on ServerException {
+      rethrow;
+    } on NetworkException {
+      rethrow;
+    } catch (e) {
+      throw ServerException('Unexpected error occurred while getting scan data: ${e.toString()}');
+    }
+  }
+
+  /// Update scan data on remote server (optional for future use)
+  Future<void> updateScan(String barcode, SaveRequestModel request) async {
+    try {
+      if (barcode.trim().isEmpty) {
+        throw const ValidationException('Barcode cannot be empty');
+      }
+
+      if (!request.isValid) {
+        throw ValidationException('Invalid request data: ${request.validationErrors.join(', ')}');
+      }
+
+      final response = await apiClient.put(
+        '/api/scans/$barcode',
+        data: request.toJson(),
+      );
+
+      if (response.statusCode == null ||
+          (response.statusCode! < 200 || response.statusCode! >= 300)) {
+        final errorMessage = response.data?['message'] ?? 'Unknown server error';
+        throw ServerException('Failed to update scan: $errorMessage');
+      }
+
+    } on ValidationException {
+      rethrow;
+    } on ServerException {
+      rethrow;
+    } on NetworkException {
+      rethrow;
+    } catch (e) {
+      throw ServerException('Unexpected error occurred while updating scan: ${e.toString()}');
+    }
+  }
+
+  /// Delete scan data from remote server (optional for future use)
+  Future<void> deleteScan(String barcode) async {
+    try {
+      if (barcode.trim().isEmpty) {
+        throw const ValidationException('Barcode cannot be empty');
+      }
+
+      final response = await apiClient.delete('/api/scans/$barcode');
+
+      if (response.statusCode == null ||
+          (response.statusCode! < 200 || response.statusCode! >= 300)) {
+        final errorMessage = response.data?['message'] ?? 'Unknown server error';
+        throw ServerException('Failed to delete scan: $errorMessage');
+      }
+
+    } on ValidationException {
+      rethrow;
+    } on ServerException {
+      rethrow;
+    } on NetworkException {
+      rethrow;
+    } catch (e) {
+      throw ServerException('Unexpected error occurred while deleting scan: ${e.toString()}');
+    }
+  }
+}