refactor: creating image process to handle processing of images

Decoupling this from the DB, it's a good step.

Not yet perfect however.

backend/imageprocessor/notification.go

@@ -0,0 +1,65 @@
+package imageprocessor
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/google/uuid"
+)
+
+const (
+	IMAGE_TYPE = "image"
+	LIST_TYPE  = "list"
+)
+
+type ImageNotification struct {
+	Type string
+
+	ImageID   uuid.UUID
+	ImageName string
+
+	Status string
+}
+
+func getImageNotification(image ImageNotification) Notification {
+	return Notification{
+		image: &image,
+	}
+}
+
+type ListNotification struct {
+	Type string
+
+	ListID uuid.UUID
+	Name   string
+
+	Status string
+}
+
+type Notification struct {
+	image *ImageNotification
+	list  *ListNotification
+}
+
+func GetListNotification(list ListNotification) Notification {
+	return Notification{
+		list: &list,
+	}
+}
+
+func (n Notification) MarshalJSON() ([]byte, error) {
+	if n.image != nil {
+		return json.Marshal(n.image)
+	}
+
+	if n.list != nil {
+		return json.Marshal(n.list)
+	}
+
+	return nil, fmt.Errorf("no image or list present")
+}
+
+func (n *Notification) UnmarshalJSON(data []byte) error {
+	return fmt.Errorf("unimplemented")
+}
+

backend/imageprocessor/processor.go

@@ -0,0 +1,66 @@
+package imageprocessor
+
+import (
+	"context"
+	"fmt"
+	"screenmark/screenmark/models"
+	"screenmark/screenmark/notifier"
+
+	"github.com/charmbracelet/log"
+	"github.com/google/uuid"
+)
+
+type DbImageProcessor struct {
+	logger *log.Logger
+	images models.ImageModel
+
+	incomingImages chan string
+
+	notifier *notifier.Notifier[Notification]
+}
+
+func (p *DbImageProcessor) processImage(incomingMsg string) error {
+	imageStringUUID := incomingMsg[0:36]
+	status := incomingMsg[36:]
+
+	imageUUID, err := uuid.Parse(imageStringUUID)
+	if err != nil {
+		return fmt.Errorf("parsing: %w", err)
+	}
+
+	processingImage, err := p.images.GetToProcess(context.Background(), imageUUID)
+	if err != nil {
+		return fmt.Errorf("get to processes: %w", err)
+	}
+
+	p.logger.Info("Update", "id", imageStringUUID, "status", status)
+
+	notification := getImageNotification(ImageNotification{
+		Type:      IMAGE_TYPE,
+		ImageID:   processingImage.ImageID,
+		ImageName: processingImage.Image.ImageName,
+		Status:    status,
+	})
+
+	return p.notifier.SendAndCreate(processingImage.UserID.String(), notification)
+}
+
+func (p *DbImageProcessor) Work() {
+	for incomingMsg := range p.incomingImages {
+		go func() {
+			err := p.processImage(incomingMsg)
+			if err != nil {
+				p.logger.Error("processing image", "err", err)
+			}
+		}()
+	}
+}
+
+func NewImageProcessor(logger *log.Logger, imageModel models.ImageModel, incoming chan string, notifier *notifier.Notifier[Notification]) *DbImageProcessor {
+	return &DbImageProcessor{
+		logger:         logger,
+		images:         imageModel,
+		incomingImages: incoming,
+		notifier:       notifier,
+	}
+}