Add missing comment reply handling (go-gitea#32050)

Fixes go-gitea#31937

- Add missing comment reply handling
- Use `onGiteaRun` in the test because the fixtures are not present
otherwise (did this behaviour change?)

Compare without whitespaces.

Author: KN4CK3R

services/mailer/incoming/incoming_handler.go

@@ -82,43 +82,40 @@ func (h *ReplyHandler) Handle(ctx context.Context, content *MailContent, doer *u
 		return nil
 	}
 
-	switch r := ref.(type) {
-	case *issues_model.Issue:
-		attachmentIDs := make([]string, 0, len(content.Attachments))
-		if setting.Attachment.Enabled {
-			for _, attachment := range content.Attachments {
-				a, err := attachment_service.UploadAttachment(ctx, bytes.NewReader(attachment.Content), setting.Attachment.AllowedTypes, int64(len(attachment.Content)), &repo_model.Attachment{
-					Name:       attachment.Name,
-					UploaderID: doer.ID,
-					RepoID:     issue.Repo.ID,
-				})
-				if err != nil {
-					if upload.IsErrFileTypeForbidden(err) {
-						log.Info("Skipping disallowed attachment type: %s", attachment.Name)
-						continue
-					}
-					return err
+	attachmentIDs := make([]string, 0, len(content.Attachments))
+	if setting.Attachment.Enabled {
+		for _, attachment := range content.Attachments {
+			a, err := attachment_service.UploadAttachment(ctx, bytes.NewReader(attachment.Content), setting.Attachment.AllowedTypes, int64(len(attachment.Content)), &repo_model.Attachment{
+				Name:       attachment.Name,
+				UploaderID: doer.ID,
+				RepoID:     issue.Repo.ID,
+			})
+			if err != nil {
+				if upload.IsErrFileTypeForbidden(err) {
+					log.Info("Skipping disallowed attachment type: %s", attachment.Name)
+					continue
 				}
-				attachmentIDs = append(attachmentIDs, a.UUID)
+				return err
 			}
+			attachmentIDs = append(attachmentIDs, a.UUID)
 		}
+	}
 
-		if content.Content == "" && len(attachmentIDs) == 0 {
-			return nil
-		}
+	if content.Content == "" && len(attachmentIDs) == 0 {
+		return nil
+	}
 
-		_, err = issue_service.CreateIssueComment(ctx, doer, issue.Repo, issue, content.Content, attachmentIDs)
+	switch r := ref.(type) {
+	case *issues_model.Issue:
+		_, err := issue_service.CreateIssueComment(ctx, doer, issue.Repo, issue, content.Content, attachmentIDs)
 		if err != nil {
 			return fmt.Errorf("CreateIssueComment failed: %w", err)
 		}
 	case *issues_model.Comment:
 		comment := r
 
-		if content.Content == "" {
-			return nil
-		}
-
-		if comment.Type == issues_model.CommentTypeCode {
+		switch comment.Type {
+		case issues_model.CommentTypeCode:
 			_, err := pull_service.CreateCodeComment(
 				ctx,
 				doer,
@@ -130,11 +127,16 @@ func (h *ReplyHandler) Handle(ctx context.Context, content *MailContent, doer *u
 				false, // not pending review but a single review
 				comment.ReviewID,
 				"",
-				nil,
+				attachmentIDs,
 			)
 			if err != nil {
 				return fmt.Errorf("CreateCodeComment failed: %w", err)
 			}
+		default:
+			_, err := issue_service.CreateIssueComment(ctx, doer, issue.Repo, issue, content.Content, attachmentIDs)
+			if err != nil {
+				return fmt.Errorf("CreateIssueComment failed: %w", err)
+			}
 		}
 	}
 	return nil