feat: 个人中心发布

service/plant/post.go

@@ -62,11 +62,6 @@ func (s *PostService) PostPage(req plantReq.PostPage, userId string) (list inter
 		Preload("Publisher", func(db *gorm.DB) *gorm.DB {
 			return db.Preload("Avatar")
 		}).
-		Preload("LikeList", func(db *gorm.DB) *gorm.DB {
-			return db.Preload("Liker", func(db *gorm.DB) *gorm.DB {
-				return db.Preload("Avatar")
-			})
-		}).
 		Preload("CommentList", func(db *gorm.DB) *gorm.DB {
 			return db.Preload("Commentator", func(db *gorm.DB) *gorm.DB {
 				return db.Preload("Avatar")
@@ -96,11 +91,21 @@ func (s *PostService) PostPage(req plantReq.PostPage, userId string) (list inter
 	if err != nil {
 		return
 	}
+	//批量查询当前用户的收藏
+	var stars []*plant.UserStar
+	err = global.DB.Where("user_id = ? and post_id in ?", userId, postIds).Find(&stars).Error
+	if err != nil {
+		return
+	}
 	// 构建id映射
 	likesMap := make(map[string]bool)
 	for _, v := range postLikeList {
 		likesMap[v.PostId] = true
 	}
+	starsMap := make(map[string]bool)
+	for _, v := range stars {
+		starsMap[v.PostId] = true
+	}
 	// 是否点赞
 	for i := range posts {
 		if likesMap[posts[i].Id] {
@@ -109,6 +114,11 @@ func (s *PostService) PostPage(req plantReq.PostPage, userId string) (list inter
 			posts[i].HasLiked = 0
 		}
 
+		if starsMap[posts[i].Id] {
+			posts[i].HasStar = 1
+		} else {
+			posts[i].HasStar = 0
+		}
 	}
 
 	return posts, total, err
@@ -169,7 +179,6 @@ func (s *PostService) MyPost(req plantReq.PostPage, userId string) (list interfa
 		} else {
 			posts[i].HasLiked = 0
 		}
-
 	}
 
 	return posts, total, err
@@ -210,7 +219,9 @@ func (s *PostService) LikePost(userId, postId, class string) error {
 			if err != nil {
 				return err
 			}
-			err = tx.Model(&post).Update("like_count", post.LikeCount-1).Error
+			err = tx.Model(&post).
+				Where("like_count > 0"). // 只有大于 0 才会执行减法
+				Update("like_count", post.LikeCount-1).Error
 			if err != nil {
 				return err
 			}
@@ -244,3 +255,89 @@ func (s *PostService) CommentPost(req plantReq.CreateComment, userId string) err
 		return tx.Create(&comment).Error
 	})
 }
+
+// DeletePost 删除帖子
+func (s *PostService) DeletePost(ids []string) error {
+	return global.DB.Transaction(func(tx *gorm.DB) error {
+		var imgIds []string
+		tx.Table("sundynix_post_oss").Where("post_id IN ?", ids).Pluck("oss_id", &imgIds)
+
+		// 2. 清理中间表记录 (解开多对多关系)
+		// 使用 Exec 直接操作中间表比循环 Clear 快得多
+		if err := tx.Exec("DELETE FROM sundynix_post_oss WHERE post_id IN ?", ids).Error; err != nil {
+			return err
+		}
+
+		// 3. 物理删除图片记录本身
+		if len(imgIds) > 0 {
+			if err := tx.Unscoped().Where("id IN ?", imgIds).Delete(&system.Oss{}).Error; err != nil {
+				return err
+			}
+		}
+		// 4. 批量删除点赞 (PostLike)
+		if err := tx.Unscoped().Where("post_id IN ?", ids).Delete(&plant.PostLike{}).Error; err != nil {
+			return err
+		}
+		// 5. 批量删除评论 (PostComment)
+		if err := tx.Unscoped().Where("post_id IN ?", ids).Delete(&plant.PostComment{}).Error; err != nil {
+			return err
+		}
+
+		// 6. 最后删除主表 Post
+		if err := tx.Unscoped().Where("id IN ?", ids).Delete(&plant.Post{}).Error; err != nil {
+			return err
+		}
+
+		return nil
+	})
+}
+
+// StarPost 收藏帖子
+func (s *PostService) StarPost(userId string, postId string, class string) error {
+	if class == "1" {
+		return global.DB.Transaction(func(tx *gorm.DB) error {
+			var post plant.Post
+			err := tx.Where("id = ?", postId).First(&post).Error
+			if err != nil {
+				return err
+			}
+			//1.更新点赞数
+			err = tx.Model(&post).Update("star_count", post.LikeCount+1).Error
+			if err != nil {
+				return err
+			}
+			//2.添加到我的收藏
+			star := plant.UserStar{
+				UserId: userId,
+				Type:   2,
+				PostId: postId,
+			}
+			return tx.Create(&star).Error
+		})
+	} else if class == "2" {
+		return global.DB.Transaction(func(tx *gorm.DB) error {
+			var star plant.UserStar
+			err := tx.Where("post_id = ? and user_id = ?", postId, userId).First(&star).Error
+			if err != nil {
+				return err
+			}
+			//1.更新收藏数
+			var post plant.Post
+			err = tx.Where("id = ?", postId).First(&post).Error
+			if err != nil {
+				return err
+			}
+			err = tx.Model(&post).
+				Where("star_count > ?", 0). // 只有大于 0 才会执行减法
+				Update("star_count", gorm.Expr("star_count - 1")).
+				Error
+
+			if err != nil {
+				return err
+			}
+			//2.删除收藏
+			return tx.Unscoped().Delete(&star).Error
+		})
+	}
+	return nil
+}