[wip] [#18] [Backend] As a logged-in user, I can see the Survey Detail screen

lib/api/survey_api_service.dart

@@ -1,5 +1,6 @@
 import 'package:dio/dio.dart';
 import 'package:retrofit/http.dart';
+import 'package:survey_flutter/model/response/survey_detail_data_response.dart';
 import 'package:survey_flutter/model/response/surveys_container_response.dart';
 
 part 'survey_api_service.g.dart';
@@ -13,4 +14,9 @@ abstract class SurveyApiService {
     @Query('page[number]') int pageNumber,
     @Query('page[size]') int pageSize,
   );
+
+  @GET('/surveys/{surveyId}')
+  Future<SurveyDetailDataResponse> getSurveyDetail(
+    @Path('surveyId') String surveyId,
+  );
 }

lib/model/answer_model.dart

@@ -0,0 +1,28 @@
+import 'package:survey_flutter/model/response/answer_response.dart';
+import 'package:survey_flutter/utils/string_extension.dart';
+
+class AnswerModel {
+  final String id;
+  final String type;
+  final String text;
+  final int displayOrder;
+  final String displayType;
+
+  const AnswerModel({
+    required this.id,
+    required this.type,
+    required this.text,
+    required this.displayOrder,
+    required this.displayType,
+  });
+}
+
+extension AnswerModelExtension on AnswerResponse {
+  AnswerModel toAnswerModel() => AnswerModel(
+        id: id.orEmpty(),
+        type: type.orEmpty(),
+        text: text.orEmpty(),
+        displayOrder: displayOrder ?? 0,
+        displayType: displayType.orEmpty(),
+      );
+}

lib/model/question_model.dart

@@ -0,0 +1,30 @@
+import 'package:survey_flutter/model/answer_model.dart';
+import 'package:survey_flutter/model/response/question_response.dart';
+import 'package:survey_flutter/utils/string_extension.dart';
+
+class QuestionModel {
+  final String id;
+  final String type;
+  final String text;
+  final String displayType;
+  final List<AnswerModel> answers;
+
+  QuestionModel({
+    required this.id,
+    required this.type,
+    required this.text,
+    required this.displayType,
+    required this.answers,
+  });
+}
+
+extension QuestionModelExtension on QuestionResponse {
+  QuestionModel toQuestionModel() => QuestionModel(
+        id: id.orEmpty(),
+        type: type.orEmpty(),
+        text: text.orEmpty(),
+        displayType: displayType.orEmpty(),
+        answers:
+            answers?.map((answer) => answer.toAnswerModel()).toList() ?? [],
+      );
+}

lib/model/response/answer_response.dart

@@ -0,0 +1,28 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'answer_response.g.dart';
+
+@JsonSerializable()
+class AnswerResponse {
+  @JsonKey(name: 'id')
+  final String? id;
+  @JsonKey(name: 'type')
+  final String? type;
+  @JsonKey(name: 'text')
+  final String? text;
+  @JsonKey(name: 'display_order')
+  final int? displayOrder;
+  @JsonKey(name: 'display_type')
+  final String? displayType;
+
+  AnswerResponse({
+    this.id,
+    this.type,
+    this.text,
+    this.displayOrder,
+    this.displayType,
+  });
+
+  factory AnswerResponse.fromJson(Map<String, dynamic> json) =>
+      _$AnswerResponseFromJson(json);
+}

lib/model/response/question_response.dart

@@ -0,0 +1,29 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:survey_flutter/model/response/answer_response.dart';
+
+part 'question_response.g.dart';
+
+@JsonSerializable()
+class QuestionResponse {
+  @JsonKey(name: 'id')
+  final String? id;
+  @JsonKey(name: 'type')
+  final String? type;
+  @JsonKey(name: 'text')
+  final String? text;
+  @JsonKey(name: 'display_type')
+  final String? displayType;
+  @JsonKey(name: 'answers')
+  final List<AnswerResponse>? answers;
+
+  QuestionResponse({
+    this.id,
+    this.type,
+    this.text,
+    this.displayType,
+    this.answers,
+  });
+
+  factory QuestionResponse.fromJson(Map<String, dynamic> json) =>
+      _$QuestionResponseFromJson(json);
+}

lib/model/response/survey_detail_data_response.dart

@@ -0,0 +1,15 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:survey_flutter/model/response/survey_detail_response.dart';
+
+part 'survey_detail_data_response.g.dart';
+
+@JsonSerializable()
+class SurveyDetailDataResponse {
+  @JsonKey(name: 'data')
+  final SurveyDetailResponse? surveyDetailResponse;
+
+  SurveyDetailDataResponse(this.surveyDetailResponse);
+
+  factory SurveyDetailDataResponse.fromJson(Map<String, dynamic> json) =>
+      _$SurveyDetailDataResponseFromJson(json);
+}

lib/model/response/survey_detail_response.dart

@@ -0,0 +1,35 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:survey_flutter/model/response/question_response.dart';
+
+part 'survey_detail_response.g.dart';
+
+@JsonSerializable()
+class SurveyDetailResponse {
+  @JsonKey(name: 'id')
+  final String? id;
+  @JsonKey(name: 'type')
+  final String? type;
+  @JsonKey(name: 'title')
+  final String? title;
+  @JsonKey(name: 'description')
+  final String? description;
+  @JsonKey(name: 'cover_image_url')
+  final String? coverImageUrl;
+  @JsonKey(name: 'survey_type')
+  final String? surveyType;
+  @JsonKey(name: 'questions')
+  final List<QuestionResponse>? questions;
+
+  SurveyDetailResponse({
+    this.id,
+    this.type,
+    this.title,
+    this.description,
+    this.coverImageUrl,
+    this.surveyType,
+    this.questions,
+  });
+
+  factory SurveyDetailResponse.fromJson(Map<String, dynamic> json) =>
+      _$SurveyDetailResponseFromJson(json);
+}

lib/model/survey_detail_model.dart

@@ -0,0 +1,37 @@
+import 'package:survey_flutter/model/question_model.dart';
+import 'package:survey_flutter/model/response/survey_detail_response.dart';
+import 'package:survey_flutter/utils/string_extension.dart';
+
+class SurveyDetailModel {
+  final String id;
+  final String type;
+  final String title;
+  final String description;
+  final String coverImageUrl;
+  final String surveyType;
+  final List<QuestionModel> questions;
+
+  const SurveyDetailModel({
+    required this.id,
+    required this.type,
+    required this.title,
+    required this.description,
+    required this.coverImageUrl,
+    required this.surveyType,
+    required this.questions,
+  });
+}
+
+extension SurveyDetailModelExtension on SurveyDetailResponse {
+  SurveyDetailModel toSurveyDetailModel() => SurveyDetailModel(
+        id: id.orEmpty(),
+        type: type.orEmpty(),
+        title: type.orEmpty(),
+        description: description.orEmpty(),
+        coverImageUrl: coverImageUrl.orEmpty(),
+        surveyType: surveyType.orEmpty(),
+        questions:
+            questions?.map((question) => question.toQuestionModel()).toList() ??
+                [],
+      );
+}

lib/repositories/survey_repository.dart

@@ -3,6 +3,7 @@
 import 'package:survey_flutter/api/exception/network_exceptions.dart';
 import 'package:survey_flutter/api/survey_api_service.dart';
 import 'package:survey_flutter/di/provider/dio_provider.dart';
+import 'package:survey_flutter/model/survey_detail_model.dart';
 import 'package:survey_flutter/model/survey_model.dart';
 import 'package:survey_flutter/storage/survey_storage.dart';
 
@@ -21,6 +22,8 @@
     required int pageNumber,
     required int pageSize,
   });
+
+  Future<SurveyDetailModel> getSurveyDetail(String surveyid);
 }
 
 class SurveyRepositoryImpl extends SurveyRepository {
@@ -45,4 +48,19 @@
       throw NetworkExceptions.fromDioException(exception);
     }
   }
+
+  @override
+  Future<SurveyDetailModel> getSurveyDetail(String surveyid) async {
+    try {
+      final response = await _apiService.getSurveyDetail(surveyid);
+      final surveyDetailResponse = response.surveyDetailResponse;
+      if (surveyDetailResponse == null) {
+        // TODO: Update catching
+        throw const NetworkExceptions.unexpectedError();
+      }
+      return surveyDetailResponse.toSurveyDetailModel();
+    } catch (exception) {
+      throw NetworkExceptions.fromDioException(exception);
+    }
+  }
 }

lib/usecases/get_survey_detail_use_case.dart

@@ -0,0 +1,20 @@
+import 'package:survey_flutter/model/survey_detail_model.dart';
+import 'package:survey_flutter/repositories/survey_repository.dart';
+import 'package:survey_flutter/usecases/base/base_use_case.dart';
+
+class GetSurveyDetailUseCase extends UseCase<SurveyDetailModel, String> {
+  final SurveyRepository _surveyRepository;
+
+  GetSurveyDetailUseCase(this._surveyRepository);
+
+  @override
+  // ignore: avoid_renaming_method_parameters
+  Future<Result<SurveyDetailModel>> call(String surveyId) async {
+    try {
+      final result = await _surveyRepository.getSurveyDetail(surveyId);
+      return Success(result);
+    } catch (exception) {
+      return Failed(UseCaseException(exception));
+    }
+  }
+}

lib/utils/string_extension.dart

@@ -0,0 +1,4 @@
+extension StringExtension on String? {
+  String unWrappedOr(String fallback) => this ?? fallback;
+  String orEmpty() => unWrappedOr('');
+}