feat: 인기 있는 책 조회 API 구현 완료

CheckIt-v3 · Oct 19, 2023 · 7c9ff3e · 7c9ff3e
1 parent ca2d13f
commit 7c9ff3e
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diff --git a/src/main/java/com/techeer/checkIt/domain/book/controller/BookController.java b/src/main/java/com/techeer/checkIt/domain/book/controller/BookController.java
@@ -1,6 +1,7 @@
 package com.techeer.checkIt.domain.book.controller;
 
 import com.techeer.checkIt.domain.book.dto.Response.BookRes;
+import com.techeer.checkIt.domain.book.dto.Response.BookSearchLikeRes;
 import com.techeer.checkIt.domain.book.dto.Response.BookSearchRes;
 import com.techeer.checkIt.domain.book.service.BookService;
 import com.techeer.checkIt.domain.user.entity.User;
@@ -67,4 +68,10 @@ public ResponseEntity<ResultResponse> updateLikeById(
         return ResponseEntity.ok(ResultResponse.of(UPDATE_BOOK_LIKE_SUCCESS ,bookResponse));
     }
 
+    @ApiOperation(value = "인기 있는 책 조회 API")
+    @GetMapping("/like")
+    public ResponseEntity<ResultResponse> getLikeBooksList() {
+        Page<BookSearchLikeRes> books = bookService.sortedBooksByLike();
+        return ResponseEntity.ok(ResultResponse.of(GET_NEW_BOOK_SUCCESS, books));
+    }
 }
diff --git a/src/main/java/com/techeer/checkIt/domain/book/service/BookService.java b/src/main/java/com/techeer/checkIt/domain/book/service/BookService.java
@@ -2,13 +2,15 @@
 
 import com.techeer.checkIt.domain.book.dao.RedisDao;
 import com.techeer.checkIt.domain.book.dto.Response.BookRes;
+import com.techeer.checkIt.domain.book.dto.Response.BookSearchLikeRes;
 import com.techeer.checkIt.domain.book.dto.Response.BookSearchRes;
 import com.techeer.checkIt.domain.book.entity.Book;
 import com.techeer.checkIt.domain.book.entity.BookDocument;
 import com.techeer.checkIt.domain.book.exception.BookNotFoundException;
 import com.techeer.checkIt.domain.book.mapper.BookMapper;
 import com.techeer.checkIt.domain.book.repository.BookJpaRepository;
 import com.techeer.checkIt.domain.book.repository.BookSearchRepository;
+import javax.transaction.Transactional;
 import lombok.AccessLevel;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -39,6 +41,12 @@ public Page<BookSearchRes> sortedBooksByTime() {
         return bookMapper.toPageDtoList(newBooks);
     }
 
+    public Page<BookSearchLikeRes> sortedBooksByLike() {
+        PageRequest pageRequest = PageRequest.of(0, 10, Sort.by(Sort.Order.desc("likeCount")));
+        Page<Book> newBooks = bookJpaRepository.findAll(pageRequest);
+        return bookMapper.toPageDtoList2(newBooks);
+    }
+
     // id별 조회할 때
     public BookRes findBookById(Long userId, Long bookId) {
         Book book = bookJpaRepository.findByBookId(bookId).orElseThrow(BookNotFoundException::new);
@@ -53,22 +61,31 @@ public BookRes findBookById(Long userId, Long bookId) {
     public Book findById(Long id) {
         return bookJpaRepository.findById(id).orElseThrow(BookNotFoundException::new);
     }
+    @Transactional
     public void updateLike(Long userId, Long bookId) {
+        Book book = bookJpaRepository.findByBookId(bookId).orElseThrow(BookNotFoundException::new);
         String redisKey = "B" + bookId.toString(); // 게시글 key
         String redisUserKey = "U" + userId.toString(); // 유저 key
         // redis에 없는 게시글 id가 들어올 경우 : 새롭게 데이터를 만들어주고 좋아요수를 0으로 초기화, 있는 경우 : 현제 좋아요수 반환
         String values = (redisDao.getValues(redisKey) == null) ? redisDao.setValues(redisKey,"0") : redisDao.getValues(redisKey);
-        int likes = Integer.parseInt(values);
+        int likes = Integer.parseInt(values), bookLikes = 0;
+
 
         // 유저를 key로 조회한 게시글 ID List안에 해당 게시글 ID가 포함되어있지 않는다면,
         if (!redisDao.getValuesList(redisUserKey).contains(redisKey.substring(1))) {
             redisDao.setValuesList(redisUserKey, redisKey.substring(1)); // 유저 key로 해당 글 ID를 List 형태로 저장
             likes = Integer.parseInt(values) + 1; // 좋아요 증가
             redisDao.setValues(redisKey, String.valueOf(likes)); // 글ID key로 좋아요 저장
+            bookLikes = book.getLikeCount();
+            book.updateLike(bookLikes+1);
         } else {
             redisDao.deleteValueList(redisUserKey, redisKey.substring(1)); // 유저 key로 해당 글 ID를 List 형태에서 제거
             likes = Integer.parseInt(values) - 1; // 좋아요 감소
             redisDao.setValues(redisKey, String.valueOf(likes)); // 글ID key로 좋아요 저장
+            bookLikes = book.getLikeCount();
+            book.updateLike(bookLikes-1);
         }
+
+        bookJpaRepository.save(book);
     }
 }