[comments] minor fixes

Author: capcom6

internal/comments/doc.go

@@ -20,14 +20,15 @@
 //
 // List comments for a task:
 //
-//	comments, err := svc.ListByTask(ctx, taskID)
+//	pagination := &db.Pagination{}
+//	comments, err := svc.ListByTask(ctx, taskID, pagination)
 //
 // Update a comment:
 //
 //	update := comments.CommentUpdate{Content: "Updated content"}
-//	err := svc.Update(ctx, commentID, userID, update)
+//	err := svc.Update(ctx, userID, commentID, update)
 //
 // Delete a comment (soft delete):
 //
-//	err := svc.Delete(ctx, commentID, userID)
+//	err := svc.Delete(ctx, userID, commentID)
 package comments

internal/comments/domain.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"strings"
 	"time"
+	"unicode/utf8"
 
 	"github.com/bit-issues/backend/internal/db"
 )
@@ -54,7 +55,7 @@ func (i CommentInput) Validate() error {
 		return fmt.Errorf("%w: content is required", ErrValidationFailed)
 	}
 
-	if len(content) > MaxContentLength {
+	if utf8.RuneCountInString(content) > MaxContentLength {
 		return fmt.Errorf("%w: content too long (max %d characters)", ErrValidationFailed, MaxContentLength)
 	}
 
@@ -69,7 +70,7 @@ func (u CommentUpdate) Validate() error {
 		return fmt.Errorf("%w: content is required", ErrValidationFailed)
 	}
 
-	if len(content) > MaxContentLength {
+	if utf8.RuneCountInString(content) > MaxContentLength {
 		return fmt.Errorf("%w: content too long (max %d characters)", ErrValidationFailed, MaxContentLength)
 	}