feat: #1158 (#1176)

src/main/java/run/halo/app/controller/content/api/JournalController.java

@@ -111,4 +111,10 @@ public class JournalController {
         journalCommentParam.setContent(HtmlUtils.htmlEscape(journalCommentParam.getContent(), StandardCharsets.UTF_8.displayName()));
         return journalCommentService.convertTo(journalCommentService.createBy(journalCommentParam));
     }
+
+    @PostMapping("{id:\\d+}/likes")
+    @ApiOperation("Likes a journal")
+    public void like(@PathVariable("id") Integer id) {
+        journalService.increaseLike(id);
+    }
 }

src/main/java/run/halo/app/controller/content/api/PostController.java

@@ -10,6 +10,7 @@ import org.springframework.data.web.SortDefault;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.util.HtmlUtils;
 import run.halo.app.cache.lock.CacheLock;
+import run.halo.app.exception.NotFoundException;
 import run.halo.app.model.dto.BaseCommentDTO;
 import run.halo.app.model.dto.post.BasePostSimpleDTO;
 import run.halo.app.model.entity.Post;
@@ -31,6 +32,7 @@ import static org.springframework.data.domain.Sort.Direction.DESC;
  * Content post controller.
  *
  * @author johnniang
+ * @author ryanwang
  * @date 2019-04-02
  */
 @RestController("ApiContentPostController")
@@ -88,6 +90,22 @@ public class PostController {
         return postDetailVO;
     }
 
+    @GetMapping("{postId:\\d+}/prev")
+    @ApiOperation("Gets previous post by current post id.")
+    public PostDetailVO getPrevPostBy(@PathVariable("postId") Integer postId) {
+        Post post = postService.getById(postId);
+        Post prevPost = postService.getPrevPost(post).orElseThrow(() -> new NotFoundException("查询不到该文章的信息"));
+        return postService.convertToDetailVo(prevPost);
+    }
+
+    @GetMapping("{postId:\\d+}/next")
+    @ApiOperation("Gets next post by current post id.")
+    public PostDetailVO getNextPostBy(@PathVariable("postId") Integer postId) {
+        Post post = postService.getById(postId);
+        Post nextPost = postService.getNextPost(post).orElseThrow(() -> new NotFoundException("查询不到该文章的信息"));
+        return postService.convertToDetailVo(nextPost);
+    }
+
     @GetMapping("/slug")
     @ApiOperation("Gets a post")
     public PostDetailVO getBy(@RequestParam("slug") String slug,
@@ -114,7 +132,6 @@ public class PostController {
     public Page<CommentWithHasChildrenVO> listTopComments(@PathVariable("postId") Integer postId,
             @RequestParam(name = "page", required = false, defaultValue = "0") int page,
             @SortDefault(sort = "createTime", direction = DESC) Sort sort) {
-
         return postCommentService.pageTopCommentsBy(postId, CommentStatus.PUBLISHED, PageRequest.of(page, optionService.getCommentPageSize(), sort));
     }
 
@@ -143,8 +160,7 @@ public class PostController {
     public Page<BaseCommentWithParentVO> listComments(@PathVariable("postId") Integer postId,
             @RequestParam(name = "page", required = false, defaultValue = "0") int page,
             @SortDefault(sort = "createTime", direction = DESC) Sort sort) {
-        Page<BaseCommentWithParentVO> result = postCommentService.pageWithParentVoBy(postId, PageRequest.of(page, optionService.getCommentPageSize(), sort));
-        return result;
+        return postCommentService.pageWithParentVoBy(postId, PageRequest.of(page, optionService.getCommentPageSize(), sort));
     }
 
     @PostMapping("comments")

src/main/java/run/halo/app/repository/JournalRepository.java

@@ -3,6 +3,9 @@ package run.halo.app.repository;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.lang.NonNull;
 import run.halo.app.model.entity.Journal;
 import run.halo.app.model.enums.JournalType;
@@ -26,4 +29,15 @@ public interface JournalRepository extends BaseRepository<Journal, Integer>, Jpa
      */
     @NonNull
     Page<Journal> findAllByType(@NonNull JournalType type, @NonNull Pageable pageable);
+
+    /**
+     * Updates journal likes.
+     *
+     * @param likes likes delta
+     * @param id    id must not be null
+     * @return updated rows
+     */
+    @Modifying
+    @Query("update Journal j set j.likes = j.likes + :likes where j.id = :id")
+    int updateLikes(@Param("likes") long likes, @Param("id") @NonNull Integer id);
 }

src/main/java/run/halo/app/service/JournalService.java

@@ -94,4 +94,19 @@ public interface JournalService extends CrudService<Journal, Integer> {
      */
     @NonNull
     Page<JournalWithCmtCountDTO> convertToCmtCountDto(@NonNull Page<Journal> journalPage);
+
+    /**
+     * Increases journal likes(1).
+     *
+     * @param id id must not be null
+     */
+    void increaseLike(@NonNull Integer id);
+
+    /**
+     * Increase journal likes.
+     *
+     * @param likes likes must not be less than 1
+     * @param id    id must not be null
+     */
+    void increaseLike(long likes, @NonNull Integer id);
 }

src/main/java/run/halo/app/service/impl/BasePostServiceImpl.java

@@ -216,8 +216,7 @@ public abstract class BasePostServiceImpl<POST extends BasePost> extends Abstrac
         Assert.notNull(postId, "Post id must not be null");
 
         boolean finishedIncrease;
-        if (basePostRepository.getByIdAndStatus(postId, PostStatus.DRAFT).isPresent())
-        {
+        if (basePostRepository.getByIdAndStatus(postId, PostStatus.DRAFT).isPresent()) {
             finishedIncrease = true;
             log.info("Post with id: [{}] is a draft and visits will not be updated", postId);
         } else {
@@ -234,7 +233,7 @@ public abstract class BasePostServiceImpl<POST extends BasePost> extends Abstrac
     @Transactional
     public void increaseLike(long likes, Integer postId) {
         Assert.isTrue(likes > 0, "Likes to increase must not be less than 1");
-        Assert.notNull(postId, "Goods id must not be null");
+        Assert.notNull(postId, "Post id must not be null");
 
         long affectedRows = basePostRepository.updateLikes(likes, postId);
 

src/main/java/run/halo/app/service/impl/JournalServiceImpl.java

@@ -8,8 +8,10 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.domain.Specification;
 import org.springframework.lang.NonNull;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
+import run.halo.app.exception.BadRequestException;
 import run.halo.app.model.dto.JournalDTO;
 import run.halo.app.model.dto.JournalWithCmtCountDTO;
 import run.halo.app.model.entity.Journal;
@@ -139,6 +141,26 @@ public class JournalServiceImpl extends AbstractCrudService<Journal, Integer> im
         return new PageImpl<>(journalWithCmtCountDTOS, journalPage.getPageable(), journalPage.getTotalElements());
     }
 
+    @Override
+    @Transactional
+    public void increaseLike(Integer id) {
+        increaseLike(1L, id);
+    }
+
+
+    @Override
+    @Transactional
+    public void increaseLike(long likes, Integer id) {
+        Assert.isTrue(likes > 0, "Likes to increase must not be less than 1");
+        Assert.notNull(id, "Journal id must not be null");
+
+        long affectedRows = journalRepository.updateLikes(likes, id);
+
+        if (affectedRows != 1) {
+            log.error("Journal with id: [{}] may not be found", id);
+            throw new BadRequestException("Failed to increase likes " + likes + " for journal with id " + id);
+        }
+    }
 
     /**
      * Build specification by journal query.