From 70434206efa0d1e6c190fd3f37fb451a42a00605 Mon Sep 17 00:00:00 2001
From: Dominika Zemanovicova <xzemanov@fi.muni.cz>
Date: Thu, 23 Mar 2023 14:22:35 +0100
Subject: [PATCH] Add QuestionController
---
.../question/QuestionController.java | 116 ++++++++++++++++++
1 file changed, 116 insertions(+)
create mode 100644 application/module-exercise/src/main/java/org/fuseri/moduleexercise/question/QuestionController.java
diff --git a/application/module-exercise/src/main/java/org/fuseri/moduleexercise/question/QuestionController.java b/application/module-exercise/src/main/java/org/fuseri/moduleexercise/question/QuestionController.java
new file mode 100644
index 00000000..40f90e06
--- /dev/null
+++ b/application/module-exercise/src/main/java/org/fuseri/moduleexercise/question/QuestionController.java
@@ -0,0 +1,116 @@
+package org.fuseri.moduleexercise.question;
+
+import jakarta.persistence.EntityNotFoundException;
+import org.fuseri.model.dto.common.Result;
+import org.fuseri.model.dto.exercise.QuestionCreateDto;
+import org.fuseri.model.dto.exercise.QuestionDto;
+import org.fuseri.moduleexercise.answer.Answer;
+import org.fuseri.moduleexercise.answer.AnswerMapper;
+import org.fuseri.moduleexercise.answer.AnswerService;
+import org.fuseri.moduleexercise.exercise.Exercise;
+import org.fuseri.moduleexercise.exercise.ExerciseService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.HashSet;
+
+/**
+ * Represent a REST API controller for questions
+ * Handle HTTP requests related to questions
+ */
+@RestController
+@RequestMapping("/questions")
+public class QuestionController {
+
+ private final QuestionService questionService;
+ private final ExerciseService exerciseService;
+ private final AnswerService answerService;
+ private final QuestionMapper questionMapper;
+ private final AnswerMapper answerMapper;
+
+ /**
+ * Constructor for QuestionController
+ *
+ * @param questionService the service responsible for handling question-related logic
+ * @param exerciseService the service responsible for handling exercise-related logic
+ * @param answerService the service responsible for handling answer-related logic
+ * @param answerMapper the mapper responsible for converting between Answer DTOs and entities
+ * @param questionMapper the mapper responsible for converting between Question DTOs and entities
+ */
+ @Autowired
+ public QuestionController(QuestionService questionService, ExerciseService exerciseService, AnswerService answerService,
+ QuestionMapper questionMapper, AnswerMapper answerMapper) {
+ this.questionService = questionService;
+ this.exerciseService = exerciseService;
+ this.answerService = answerService;
+ this.questionMapper = questionMapper;
+ this.answerMapper = answerMapper;
+ }
+
+ /**
+ * Find a question by ID.
+ *
+ * @param id the ID of the question to find
+ * @return a QuestionDto object representing the found question
+ */
+ @GetMapping("/{id}")
+ public QuestionDto find(@PathVariable String id) {
+ var a = questionService.find(id);
+ return questionMapper.toDto(a);
+ }
+
+ /**
+ * Find questions by exercise ID and return them in a paginated format
+ *
+ * @param exerciseId the ID of the exercise to find questions for
+ * @param page the page number of the questions to retrieve
+ * @return a Result object containing a list of QuestionDto objects and pagination information
+ */
+ @GetMapping("/exercise/{exerciseId}")
+ public Result<QuestionDto> findByExerciseId(@PathVariable String exerciseId, @RequestParam int page) {
+ Page<Question> questions = questionService.findByExerciseId(exerciseId, page);
+ return questionMapper.toResult(questions);
+ }
+
+ /**
+ * Add a new question to an exercise
+ *
+ * @param dto a QuestionCreateDto object representing the new question to add
+ * @return a QuestionDto object representing the added question
+ * @throws ResponseStatusException if the exercise with exerciseId from QuestionCreateDto does not exist
+ */
+ @PostMapping
+ public QuestionDto addQuestion(@RequestBody QuestionCreateDto dto) {
+ Exercise exercise;
+ try {
+ exercise = exerciseService.find(dto.getExerciseId());
+ } catch (EntityNotFoundException e) {
+ throw new ResponseStatusException(HttpStatus.NOT_FOUND,
+ "Exercise not found with id: " + dto.getExerciseId());
+ }
+
+ Question question = questionMapper.fromCreateDto(dto);
+ exercise.getQuestions().add(question);
+ question.setExerciseId(exercise.getId());
+
+ var answerDtos = dto.getAnswers();
+ var answers = new HashSet<Answer>();
+ for (var answerDto : answerDtos) {
+ Answer answer = answerMapper.fromCreateDto(answerDto);
+ answer = answerService.create(answer);
+ answers.add(answer);
+ }
+
+ question.setAnswers(answers);
+ var createdQuestion = questionService.create(question);
+
+ for (var answer : answers) {
+ answer.setQuestionId(createdQuestion.getId());
+ }
+
+ return questionMapper.toDto(createdQuestion);
+ }
+}
\ No newline at end of file
--
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