Develop board

src/main/java/com/rest/api/service/board/BoardService.java

@@ -0,0 +1,40 @@
+package com.rest.api.service.board;
+
+import com.rest.api.entity.board.Board;
+import com.rest.api.entity.board.Post;
+import com.rest.api.model.board.ParamsPost;
+import com.rest.api.repo.board.BoardJpaRepo;
+import com.rest.api.repo.board.PostJpaRepo;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+import java.util.List;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class BoardService {
+
+    private final BoardJpaRepo boardJpaRepo;
+    private final PostJpaRepo postJpaRepo;
+
+    public Board findBoard(String boardName) {
+        return boardJpaRepo.findByName(boardName);
+    }
+
+    public List<Post> findPosts(String boardName) {
+        Board board = findBoard(boardName);
+        return postJpaRepo.findByBoard(board);
+    }
+
+    private Post getPost(long postId) {
+        return postJpaRepo.findById(postId).orElse(null);
+    }
+
+    public Post writePost(String boardName, ParamsPost paramsPost) {
+        Board board = findBoard(boardName);
+        Post post = board.write(paramsPost.getAuthor(), paramsPost.getTitle(), paramsPost.getContent());
+        return postJpaRepo.save(post);
+    }
+}