first commit

app/blog/services/comment_service.go

@@ -0,0 +1,115 @@
+package services
+
+import (
+	"errors"
+	"gobeyhan/database"
+	"gobeyhan/database/models"
+
+	"gorm.io/gorm"
+)
+
+type CommentService struct{}
+
+func NewCommentService() *CommentService {
+	return &CommentService{}
+}
+
+// GetCommentsByPost retrieves comments for a specific post
+func (s *CommentService) GetCommentsByPost(postID uint64, activeOnly bool) ([]models.Comment, error) {
+	var comments []models.Comment
+	query := database.DB.
+		Where("product_id = ?", postID).
+		Preload("Parent").
+		Preload("Children")
+
+	if activeOnly {
+		query = query.Where("is_active = ?", true)
+	}
+
+	err := query.Order("created_at DESC").Find(&comments).Error
+	return comments, err
+}
+
+// GetAllComments retrieves all comments with pagination
+func (s *CommentService) GetAllComments(page, limit int, activeOnly bool) ([]models.Comment, int64, error) {
+	var comments []models.Comment
+	var total int64
+
+	query := database.DB.
+		Preload("Product").
+		Preload("Parent").
+		Preload("Children")
+
+	if activeOnly {
+		query = query.Where("is_active = ?", true)
+	}
+
+	query.Model(&models.Comment{}).Count(&total)
+
+	err := query.
+		Offset((page - 1) * limit).
+		Limit(limit).
+		Order("created_at DESC").
+		Find(&comments).Error
+
+	return comments, total, err
+}
+
+// GetCommentByID retrieves a comment by ID
+func (s *CommentService) GetCommentByID(id uint64) (*models.Comment, error) {
+	var comment models.Comment
+	err := database.DB.
+		Preload("Product").
+		Preload("Parent").
+		Preload("Children").
+		First(&comment, id).Error
+
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+
+	return &comment, nil
+}
+
+// CreateComment creates a new comment
+func (s *CommentService) CreateComment(comment *models.Comment) error {
+	return database.DB.Create(comment).Error
+}
+
+// UpdateComment updates an existing comment
+func (s *CommentService) UpdateComment(id uint64, updates map[string]interface{}) error {
+	result := database.DB.Model(&models.Comment{}).Where("id = ?", id).Updates(updates)
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return gorm.ErrRecordNotFound
+	}
+	return nil
+}
+
+// DeleteComment deletes a comment by ID
+func (s *CommentService) DeleteComment(id uint64) error {
+	result := database.DB.Delete(&models.Comment{}, id)
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return gorm.ErrRecordNotFound
+	}
+	return nil
+}
+
+// GetCommentReplies retrieves replies to a specific comment
+func (s *CommentService) GetCommentReplies(commentID uint64) ([]models.Comment, error) {
+	var replies []models.Comment
+	err := database.DB.
+		Where("parent_id = ? AND is_active = ?", commentID, true).
+		Order("created_at ASC").
+		Find(&replies).Error
+
+	return replies, err
+}