[feat] 퀴즈 조회, 수정, 삭제 API 구현

backend/src/main/java/io/f1/backend/domain/quiz/api/QuizController.java

@@ -3,16 +3,25 @@
 import io.f1.backend.domain.quiz.app.QuizService;
 import io.f1.backend.domain.quiz.dto.QuizCreateRequest;
 import io.f1.backend.domain.quiz.dto.QuizCreateResponse;
+import io.f1.backend.domain.quiz.dto.QuizListPageResponse;
+import io.f1.backend.domain.quiz.dto.QuizUpdateRequest;
 
 import jakarta.validation.Valid;
 
 import lombok.RequiredArgsConstructor;
 
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
@@ -35,4 +44,36 @@ public ResponseEntity<QuizCreateResponse> saveQuiz(
 
         return ResponseEntity.status(HttpStatus.CREATED).body(response);
     }
+
+    @DeleteMapping("/{quizId}")
+    public ResponseEntity<Void> deleteQuiz(@PathVariable Long quizId) {
+
+        quizService.deleteQuiz(quizId);
+        return ResponseEntity.noContent().build();
+    }
+
+    @PutMapping("/{quizId}")
+    public ResponseEntity<Void> updateQuiz(
+            @PathVariable Long quizId,
+            @RequestPart(required = false) MultipartFile thumbnailFile,
+            @RequestPart QuizUpdateRequest request)
+            throws IOException {
+
+        quizService.updateQuiz(quizId, thumbnailFile, request);
+
+        return ResponseEntity.noContent().build();
+    }
+
+    @GetMapping
+    public ResponseEntity<QuizListPageResponse> getQuizzes(
+            @RequestParam(defaultValue = "1") int page,
+            @RequestParam(defaultValue = "10") int size,
+            @RequestParam(required = false) String title,
+            @RequestParam(required = false) String creator) {
+
+        Pageable pageable = PageRequest.of(page - 1, size);
+        QuizListPageResponse quizzes = quizService.getQuizzes(title, creator, pageable);
+
+        return ResponseEntity.ok().body(quizzes);
+    }
 }

backend/src/main/java/io/f1/backend/domain/quiz/app/QuizService.java

@@ -1,20 +1,29 @@
 package io.f1.backend.domain.quiz.app;
 
+import static io.f1.backend.domain.quiz.mapper.QuizMapper.pageQuizToPageQuizListResponse;
 import static io.f1.backend.domain.quiz.mapper.QuizMapper.quizCreateRequestToQuiz;
 import static io.f1.backend.domain.quiz.mapper.QuizMapper.quizToQuizCreateResponse;
+import static io.f1.backend.domain.quiz.mapper.QuizMapper.toQuizListPageResponse;
+
+import static java.nio.file.Files.deleteIfExists;
 
 import io.f1.backend.domain.question.app.QuestionService;
 import io.f1.backend.domain.question.dto.QuestionRequest;
 import io.f1.backend.domain.quiz.dao.QuizRepository;
 import io.f1.backend.domain.quiz.dto.QuizCreateRequest;
 import io.f1.backend.domain.quiz.dto.QuizCreateResponse;
+import io.f1.backend.domain.quiz.dto.QuizListPageResponse;
+import io.f1.backend.domain.quiz.dto.QuizListResponse;
+import io.f1.backend.domain.quiz.dto.QuizUpdateRequest;
 import io.f1.backend.domain.quiz.entity.Quiz;
 import io.f1.backend.domain.user.dao.UserRepository;
 import io.f1.backend.domain.user.entity.User;
 
 import lombok.RequiredArgsConstructor;
 
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
@@ -23,6 +32,7 @@
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
+import java.util.NoSuchElementException;
 import java.util.UUID;
 
 @Service
@@ -91,4 +101,88 @@ private String convertToThumbnailPath(MultipartFile thumbnailFile) throws IOExce
     private String getExtension(String filename) {
         return filename.substring(filename.lastIndexOf(".") + 1);
     }
+
+    @Transactional
+    public void deleteQuiz(Long quizId) {
+
+        Quiz quiz =
+                quizRepository
+                        .findById(quizId)
+                        .orElseThrow(() -> new NoSuchElementException("존재하지 않는 퀴즈입니다."));
+
+        if (1L != quiz.getCreator().getId()) {
+            throw new RuntimeException("권한이 없습니다.");
+        }
+
+        deleteOldThumbnailFileIfNeeded(quiz.getThumbnailUrl());
+        quizRepository.deleteById(quizId);
+    }
+
+    @Transactional
+    public void updateQuiz(Long quizId, MultipartFile thumbnailFile, QuizUpdateRequest request)
+            throws IOException {
+
+        Quiz quiz =
+                quizRepository
+                        .findById(quizId)
+                        .orElseThrow(() -> new NoSuchElementException("존재하지 않는 퀴즈입니다."));
+
+        if (request.title() != null) {
+            quiz.changeTitle(request.title());
+        }
+
+        if (request.description() != null) {
+            quiz.changeDescription(request.description());
+        }
+
+        if (thumbnailFile != null && !thumbnailFile.isEmpty()) {
+            validateImageFile(thumbnailFile);
+            String newThumbnailPath = convertToThumbnailPath(thumbnailFile);
+
+            deleteOldThumbnailFileIfNeeded(quiz.getThumbnailUrl());
+            quiz.changeThumbnailUrl(newThumbnailPath);
+        }
+    }
+
+    private void deleteOldThumbnailFileIfNeeded(String oldFilename) {
+        if (oldFilename.contains("default")) {
+            return;
+        }
+
+        // oldFilename : /images/thumbnail/123asd.jpg
+        // filename : 123asd.jpg
+        String filename = oldFilename.substring(oldFilename.lastIndexOf("/") + 1);
+        Path filePath = Paths.get(uploadPath, filename).toAbsolutePath();
+
+        try {
+            boolean deleted = deleteIfExists(filePath);
+            if (deleted) {
+                System.out.println("기존 썸네일 삭제 완료 : " + filePath);
+            } else {
+                System.out.println("기존 썸네일 존재 X : " + filePath);
+            }
+        } catch (IOException e) {
+            System.err.println("기존 썸네일 삭제 중 오류 : " + filePath);
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Transactional(readOnly = true)
+    public QuizListPageResponse getQuizzes(String title, String creator, Pageable pageable) {
+
+        Page<Quiz> quizzes;
+
+        // 검색어가 있을 때
+        if (title != null && !title.isBlank()) {
+            quizzes = quizRepository.findQuizzesByTitleContaining(title, pageable);
+        } else if (creator != null && !creator.isBlank()) {
+            quizzes = quizRepository.findQuizzesByCreator_NicknameContaining(creator, pageable);
+        } else { // 검색어가 없을 때 혹은 빈 문자열일 때
+            quizzes = quizRepository.findAll(pageable);
+        }
+
+        Page<QuizListResponse> quizListResponses = pageQuizToPageQuizListResponse(quizzes);
+
+        return toQuizListPageResponse(quizListResponses);
+    }
 }

backend/src/main/java/io/f1/backend/domain/quiz/dao/QuizRepository.java

@@ -2,6 +2,13 @@
 
 import io.f1.backend.domain.quiz.entity.Quiz;
 
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-public interface QuizRepository extends JpaRepository<Quiz, Long> {}
+public interface QuizRepository extends JpaRepository<Quiz, Long> {
+
+    Page<Quiz> findQuizzesByTitleContaining(String title, Pageable pageable);
+
+    Page<Quiz> findQuizzesByCreator_NicknameContaining(String creator, Pageable pageable);
+}

backend/src/main/java/io/f1/backend/domain/quiz/dto/QuizListPageResponse.java

@@ -0,0 +1,6 @@
+package io.f1.backend.domain.quiz.dto;
+
+import java.util.List;
+
+public record QuizListPageResponse(
+        int totalPages, int currentPage, long totalElements, List<QuizListResponse> quiz) {}

backend/src/main/java/io/f1/backend/domain/quiz/dto/QuizListResponse.java

@@ -0,0 +1,9 @@
+package io.f1.backend.domain.quiz.dto;
+
+public record QuizListResponse(
+        Long quizId,
+        String title,
+        String description,
+        String creatorNickname,
+        int numberOfQuestion,
+        String thumbnailUrl) {}

backend/src/main/java/io/f1/backend/domain/quiz/dto/QuizUpdateRequest.java

@@ -0,0 +1,3 @@
+package io.f1.backend.domain.quiz.dto;
+
+public record QuizUpdateRequest(String title, String description) {}

backend/src/main/java/io/f1/backend/domain/quiz/entity/Quiz.java

@@ -69,4 +69,16 @@ public Quiz(
     public void addQuestion(Question question) {
         this.questions.add(question);
     }
+
+    public void changeTitle(String title) {
+        this.title = title;
+    }
+
+    public void changeDescription(String description) {
+        this.description = description;
+    }
+
+    public void changeThumbnailUrl(String thumbnailUrl) {
+        this.thumbnailUrl = thumbnailUrl;
+    }
 }

backend/src/main/java/io/f1/backend/domain/quiz/mapper/QuizMapper.java

@@ -2,9 +2,13 @@
 
 import io.f1.backend.domain.quiz.dto.QuizCreateRequest;
 import io.f1.backend.domain.quiz.dto.QuizCreateResponse;
+import io.f1.backend.domain.quiz.dto.QuizListPageResponse;
+import io.f1.backend.domain.quiz.dto.QuizListResponse;
 import io.f1.backend.domain.quiz.entity.Quiz;
 import io.f1.backend.domain.user.entity.User;
 
+import org.springframework.data.domain.Page;
+
 public class QuizMapper {
 
     // TODO : 이후 파라미터에서 user 삭제하기
@@ -30,4 +34,26 @@ public static QuizCreateResponse quizToQuizCreateResponse(Quiz quiz) {
                 quiz.getThumbnailUrl(),
                 quiz.getCreator().getId());
     }
+
+    public static QuizListResponse quizToQuizListResponse(Quiz quiz) {
+        return new QuizListResponse(
+                quiz.getId(),
+                quiz.getTitle(),
+                quiz.getDescription(),
+                quiz.getCreator().getNickname(),
+                quiz.getQuestions().size(),
+                quiz.getThumbnailUrl());
+    }
+
+    public static QuizListPageResponse toQuizListPageResponse(Page<QuizListResponse> quizzes) {
+        return new QuizListPageResponse(
+                quizzes.getTotalPages(),
+                quizzes.getNumber() + 1,
+                quizzes.getTotalElements(),
+                quizzes.getContent());
+    }
+
+    public static Page<QuizListResponse> pageQuizToPageQuizListResponse(Page<Quiz> quizzes) {
+        return quizzes.map(QuizMapper::quizToQuizListResponse);
+    }
 }