Add comment update functionality with UI integration

server/api/comment.go

@@ -14,6 +14,7 @@ func AddCommentRoutes(router fiber.Router) {
 	api.Post("/:resourceID", createComment)
 	api.Get("/:resourceID", listComments)
 	api.Get("/user/:username", listCommentsWithUser)
+	api.Put("/:commentID", updateComment)
 }
 
 func createComment(c fiber.Ctx) error {
@@ -89,3 +90,28 @@ func listCommentsWithUser(c fiber.Ctx) error {
 		Message:    "Comments retrieved successfully",
 	})
 }
+
+func updateComment(c fiber.Ctx) error {
+	userID, ok := c.Locals("uid").(uint)
+	if !ok {
+		return model.NewRequestError("You must be logged in to update comment")
+	}
+	commentIDStr := c.Params("commentID")
+	commentID, err := strconv.Atoi(commentIDStr)
+	if err != nil {
+		return model.NewRequestError("Invalid comment ID")
+	}
+	content := c.FormValue("content")
+	if content == "" {
+		return model.NewRequestError("Content cannot be empty")
+	}
+	comment, err := service.UpdateComment(uint(commentID), userID, content)
+	if err != nil {
+		return err
+	}
+	return c.JSON(model.Response[model.CommentView]{
+		Success: true,
+		Data:    *comment,
+		Message: "Comment updated successfully",
+	})
+}

server/dao/comment.go

@@ -70,3 +70,16 @@ func GetCommentByID(commentID uint) (*model.Comment, error) {
 	}
 	return &comment, nil
 }
+
+func UpdateCommentContent(commentID uint, content string) (*model.Comment, error) {
+	var comment model.Comment
+	if err := db.First(&comment, commentID).Error; err != nil {
+		return nil, err
+	}
+	comment.Content = content
+	if err := db.Save(&comment).Error; err != nil {
+		return nil, err
+	}
+	db.Preload("User").First(&comment, commentID)
+	return &comment, nil
+}

server/service/comment.go

@@ -69,3 +69,18 @@ func ListCommentsWithUser(username string, page int) ([]model.CommentWithResourc
 	}
 	return res, totalPages, nil
 }
+
+func UpdateComment(commentID, userID uint, content string) (*model.CommentView, error) {
+	comment, err := dao.GetCommentByID(commentID)
+	if err != nil {
+		return nil, model.NewNotFoundError("Comment not found")
+	}
+	if comment.UserID != userID {
+		return nil, model.NewRequestError("You can only update your own comments")
+	}
+	updated, err := dao.UpdateCommentContent(commentID, content)
+	if err != nil {
+		return nil, model.NewInternalServerError("Error updating comment")
+	}
+	return updated.ToView(), nil
+}