🎨 update project structure

dao/impl/comment_reply_dao_impl.go

@@ -0,0 +1,92 @@
+package impl
+
+import (
+	"fmt"
+	"gorm.io/gorm"
+	"schisandra-cloud-album/global"
+	"schisandra-cloud-album/model"
+)
+
+type CommentReplyDaoImpl struct{}
+
+// CreateCommentReply 创建评论
+func (CommentReplyDaoImpl) CreateCommentReply(comment *model.ScaCommentReply) error {
+	if err := global.DB.Create(&comment).Error; err != nil {
+		return err
+	}
+	return nil
+}
+
+// GetCommentListOrderByCreatedTimeDesc 通过topic_id获取评论列表
+func (CommentReplyDaoImpl) GetCommentListOrderByCreatedTimeDesc(topicID uint, page, pageSize int) ([]model.ScaCommentReply, error) {
+	var comments []model.ScaCommentReply
+	// 计算偏移量
+	offset := (page - 1) * pageSize
+
+	if err := global.DB.Where("topic_id =? and deleted = 0", topicID).Order("created_time desc").
+		Offset(offset).Limit(pageSize).Find(&comments).Error; err != nil {
+		return nil, err
+	}
+	return comments, nil
+}
+
+// GetCommentListOrderByLikesDesc 通过topic_id获取评论列表
+func (CommentReplyDaoImpl) GetCommentListOrderByLikesDesc(topicID uint, page, pageSize int) ([]model.ScaCommentReply, error) {
+	var comments []model.ScaCommentReply
+	// 计算偏移量
+	offset := (page - 1) * pageSize
+
+	if err := global.DB.Where("topic_id =? and deleted = 0", topicID).Order("likes desc").
+		Offset(offset).Limit(pageSize).Find(&comments).Error; err != nil {
+		return nil, err
+	}
+	return comments, nil
+}
+
+// UpdateCommentReplyCount 更新评论
+func (CommentReplyDaoImpl) UpdateCommentReplyCount(commentID int64) error {
+	// 使用事务处理错误
+	err := global.DB.Transaction(func(tx *gorm.DB) error {
+		result := tx.Model(&model.ScaCommentReply{}).Where("id = ? and deleted = 0", commentID).Update("reply_count", gorm.Expr("reply_count + ?", 1))
+		if result.Error != nil {
+			return result.Error // 返回更新错误
+		}
+		if result.RowsAffected == 0 {
+			return fmt.Errorf("comment not found") // 处理评论不存在的情况
+		}
+		return nil
+	})
+	return err
+}
+
+// UpdateCommentLikesCount 更新评论 likes 数量
+func (CommentReplyDaoImpl) UpdateCommentLikesCount(commentID int64, topicID string) error {
+	// 使用事务处理错误
+	err := global.DB.Transaction(func(tx *gorm.DB) error {
+		result := tx.Model(&model.ScaCommentReply{}).Where("id = ? and topic_id = ? and deleted = 0", commentID, topicID).Update("likes", gorm.Expr("likes + ?", 1))
+		if result.Error != nil {
+			return result.Error // 返回更新错误
+		}
+		if result.RowsAffected == 0 {
+			return fmt.Errorf("comment not found") // 处理评论不存在的情况
+		}
+		return nil
+	})
+	return err
+}
+
+// DecrementCommentLikesCount 减少评论 likes 数量
+func (CommentReplyDaoImpl) DecrementCommentLikesCount(commentID int64, topicID string) error {
+	// 使用事务处理错误
+	err := global.DB.Transaction(func(tx *gorm.DB) error {
+		result := tx.Model(&model.ScaCommentReply{}).Where("id = ? and topic_id = ? and deleted = 0", commentID, topicID).Update("likes", gorm.Expr("likes - ?", 1))
+		if result.Error != nil {
+			return result.Error // 返回更新错误
+		}
+		if result.RowsAffected == 0 {
+			return fmt.Errorf("comment not found") // 处理评论不存在的情况
+		}
+		return nil
+	})
+	return err
+}