Initial commit: Penyerahan final Source code Tugas Akhir

lib/providers/reply_qna_provider.dart

@@ -0,0 +1,65 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:initial_folder/models/qna_model.dart';
+import 'package:initial_folder/services/qna_service.dart';
+import 'package:rxdart/rxdart.dart';
+
+enum DataState { loading, noData, hasData, error }
+enum ResultStateLike { loading, error }
+
+class ReplyQnaProvider with ChangeNotifier {
+  final _service = QnaService();
+  StreamController<QnaModel> streamController = BehaviorSubject();
+  String _message = '';
+  String get message => _message;
+  DataState? _state;
+  DataState? get state => _state;
+  QnaModel? _qnaModel;
+  QnaModel? get result => _qnaModel;
+
+  set qnaModel(QnaModel? qnaModel) {
+    _qnaModel = qnaModel;
+    notifyListeners();
+  }
+
+  Stream<QnaModel> get replyQnaStream {
+    return streamController.stream;
+  }
+
+  Future<void> getReplyQna(String idCourse, int index) async {
+    QnaModel qnaModel = await _service.getMyQna(idCourse);
+    streamController.add(qnaModel);
+  }
+
+  Future<void> getReplyQnaById(String idCourse, String idQna) async {
+    try {
+      _state = DataState.loading;
+      QnaModel qnaModel = await _service.getMyQna(idCourse);
+
+      // Filter untuk mencari item dengan idQna yang sesuai dalam List<List<QnaDataModel>>
+      var filteredQna = qnaModel.data.expand((innerList) => innerList)
+          .where((qna) => qna.idQna == idQna).toList();
+
+      if (filteredQna.isNotEmpty) {
+        // Set data yang sudah terfilter ke dalam streamController
+        streamController.add(QnaModel(data: [filteredQna]));
+        _state = DataState.hasData;
+      } else {
+        // Jika tidak ada data, set status noData
+        _state = DataState.noData;
+      }
+    } catch (e) {
+      _state = DataState.error;
+      _message = "Terjadi kesalahan saat mengambil data balasan.";
+      streamController.addError(_message);
+    }
+    notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    streamController.close();  
+    super.dispose();
+  }
+}