Have got removing parameters working

services/imgedit/processing.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"image"
 	"image/color"
+	"log"
 	"os"
 	"path/filepath"
 
@@ -46,6 +47,8 @@ func (s *Service) reprocess(ctx context.Context, session *models.ImageEditSessio
 		img = imageImageSource{resImg}
 	}
 
+	log.Printf("result of processed image: %T", img)
+
 	return img, nil
 }
 

services/imgedit/service.go

@@ -8,6 +8,7 @@ import (
 
 	"lmika.dev/lmika/weiro/models"
 	"lmika.dev/lmika/weiro/services/uploads"
+	"lmika.dev/pkg/modash/moslice"
 )
 
 type Service struct {
@@ -114,6 +115,25 @@ func (s *Service) AddProcessor(ctx context.Context, sessionID string, req AddPro
 	return session, nil
 }
 
+func (s *Service) DeleteProcessor(ctx context.Context, sessionID, processorID string) (*models.ImageEditSession, error) {
+	session, err := s.loadAndVerifySession(ctx, sessionID)
+	if err != nil {
+		return nil, err
+	}
+
+	session.Processors = moslice.Filter(session.Processors, func(p models.ImageEditProcessor) bool { return p.ID != processorID })
+	session.RecalcVersionIDs()
+	if err := s.sessionStore.save(session); err != nil {
+		return nil, err
+	}
+
+	if _, err := s.reprocess(ctx, session); err != nil {
+		return nil, err
+	}
+
+	return session, nil
+}
+
 func (s *Service) loadAndVerifySession(ctx context.Context, sessionID string) (*models.ImageEditSession, error) {
 	site, user, err := s.fetchSiteAndUser(ctx)
 	if err != nil {