add auth

lib/features/news/data/datasources/news_remote_datasource.dart

@@ -0,0 +1,93 @@
+/// News Remote DataSource
+///
+/// Handles fetching news/blog data from the Frappe API.
+library;
+
+import 'package:dio/dio.dart';
+import 'package:worker/core/constants/api_constants.dart';
+import 'package:worker/core/network/dio_client.dart';
+import 'package:worker/core/services/frappe_auth_service.dart';
+import 'package:worker/features/news/data/models/blog_category_model.dart';
+
+/// News Remote Data Source
+///
+/// Provides methods to fetch news and blog content from the Frappe API.
+/// Uses FrappeAuthService for session management.
+class NewsRemoteDataSource {
+  NewsRemoteDataSource(this._dioClient, this._frappeAuthService);
+
+  final DioClient _dioClient;
+  final FrappeAuthService _frappeAuthService;
+
+  /// Get blog categories
+  ///
+  /// Fetches all published blog categories from Frappe.
+  /// Returns a list of [BlogCategoryModel].
+  ///
+  /// API endpoint: POST https://land.dbiz.com/api/method/frappe.client.get_list
+  /// Request body:
+  /// ```json
+  /// {
+  ///   "doctype": "Blog Category",
+  ///   "fields": ["title","name"],
+  ///   "filters": {"published":1},
+  ///   "order_by": "creation desc",
+  ///   "limit_page_length": 0
+  /// }
+  /// ```
+  ///
+  /// Response format:
+  /// ```json
+  /// {
+  ///   "message": [
+  ///     {"title": "Tin tức", "name": "tin-tức"},
+  ///     {"title": "Chuyên môn", "name": "chuyên-môn"},
+  ///     ...
+  ///   ]
+  /// }
+  /// ```
+  Future<List<BlogCategoryModel>> getBlogCategories() async {
+    try {
+      // Get Frappe session headers
+      final headers = await _frappeAuthService.getHeaders();
+
+      // Build full API URL
+      final url = '${ApiConstants.baseUrl}${ApiConstants.frappeApiMethod}${ApiConstants.frappeGetList}';
+
+      final response = await _dioClient.post<Map<String, dynamic>>(
+        url,
+        data: {
+          'doctype': 'Blog Category',
+          'fields': ['title', 'name'],
+          'filters': {'published': 1},
+          'order_by': 'creation desc',
+          'limit_page_length': 0,
+        },
+        options: Options(headers: headers),
+      );
+
+      if (response.data == null) {
+        throw Exception('Empty response from server');
+      }
+
+      // Parse the response using the wrapper model
+      final categoriesResponse = BlogCategoriesResponse.fromJson(response.data!);
+
+      return categoriesResponse.message;
+    } on DioException catch (e) {
+      if (e.response?.statusCode == 404) {
+        throw Exception('Blog categories endpoint not found');
+      } else if (e.response?.statusCode == 500) {
+        throw Exception('Server error while fetching blog categories');
+      } else if (e.type == DioExceptionType.connectionTimeout) {
+        throw Exception('Connection timeout while fetching blog categories');
+      } else if (e.type == DioExceptionType.receiveTimeout) {
+        throw Exception('Response timeout while fetching blog categories');
+      } else {
+        throw Exception('Failed to fetch blog categories: ${e.message}');
+      }
+    } catch (e) {
+      throw Exception('Unexpected error fetching blog categories: $e');
+    }
+  }
+}