feat: implements getting memo recommendations api

Funssion-SWM · Nov 9, 2023 · 65ce3af · 65ce3af
1 parent 9aa8d33
commit 65ce3af
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Showing 4 changed files with 28 additions and 0 deletions.
diff --git a/src/main/java/Funssion/Inforum/domain/post/memo/controller/MemoController.java b/src/main/java/Funssion/Inforum/domain/post/memo/controller/MemoController.java
@@ -61,6 +61,13 @@ public void removeMemo(@PathVariable @Min(1) Long id) {
         memoService.deleteMemo(id);
     }
 
+    @GetMapping("/{id}/recommendations")
+    public List<MemoListDto> getMemoRecommendationsByTags(
+            @PathVariable @Min(1) Long id
+    ) {
+        return memoService.getMemoRecommendations(id);
+    }
+
     @PostMapping("/{id}/image")
     public ImageDto uploadImageInMemo(
             @PathVariable @Min(1) Long id,

diff --git a/src/main/java/Funssion/Inforum/domain/post/memo/repository/MemoRepository.java b/src/main/java/Funssion/Inforum/domain/post/memo/repository/MemoRepository.java
@@ -16,6 +16,7 @@ public interface MemoRepository {
     List<Memo> findAllOrderById(Long pageNum, Long resultCntPerPage);
     List<Memo> findAllByUserIdOrderById(Long userId, Long pageNum, Long resultCntPerPage);
     List<Memo> findAllLikedMemosByUserId(Long userId, Long pageNum, Long resultCntPerPage);
+    List<Memo> findAllByTagsOrderByMatchesAndLikes(Long memoId);
     List<Memo> findAllDraftMemosByUserId(Long userId);
     List<Memo> findAllBySearchQuery(List<String> searchStringList, OrderType orderType, Long userId, Long pageNum, Long resultCntPerPage);
     List<Memo> findAllByTag(String tagText, OrderType orderType, Long pageNum, Long resultCntPerPage);

diff --git a/src/main/java/Funssion/Inforum/domain/post/memo/repository/MemoRepositoryJdbc.java b/src/main/java/Funssion/Inforum/domain/post/memo/repository/MemoRepositoryJdbc.java
@@ -95,6 +95,19 @@ public List<Memo> findAllLikedMemosByUserId(Long userId, Long pageNum, Long resu
         return template.query(sql, memoRowMapper(), userId, resultCntPerPage, resultCntPerPage*pageNum);
     }
 
+    @Override
+    public List<Memo> findAllByTagsOrderByMatchesAndLikes(Long memoId) {
+        String sql = "SELECT m.* " +
+                "FROM post.memo m , UNNEST(m.tags) tag_element " +
+                "WHERE tag_element ILIKE ANY(ARRAY(SELECT tags FROM post.memo WHERE id = ? AND array_length(tags, 1) >= 1)) " +
+                "AND NOT id = ? " +
+                "AND is_temporary = false " +
+                "GROUP BY id " +
+                "ORDER BY COUNT(tag_element) desc, likes desc, id desc";
+
+        return template.query(sql, memoRowMapper(), memoId, memoId);
+    }
+
     @Override
     public List<Memo> findAllDraftMemosByUserId(Long userId) {
         String sql = "select * from post.memo where author_id = ? and is_temporary = true order by id desc";

diff --git a/src/main/java/Funssion/Inforum/domain/post/memo/service/MemoService.java b/src/main/java/Funssion/Inforum/domain/post/memo/service/MemoService.java
@@ -189,6 +189,13 @@ public MemoDto getMemoBy(Long memoId) {
         return responseDto;
     }
 
+    public List<MemoListDto> getMemoRecommendations(Long id) {
+
+        return memoRepository.findAllByTagsOrderByMatchesAndLikes(id).stream()
+                .map(MemoListDto::new)
+                .toList();
+    }
+
     @Transactional
     public MemoDto updateMemo(Long memoId, MemoSaveDto form) {