Rename movie group backend (#5044)

* Rename movie go files
* Rename movie package to group

pkg/group/export.go

@@ -0,0 +1,71 @@
+package group
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/stashapp/stash/pkg/logger"
+	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/models/json"
+	"github.com/stashapp/stash/pkg/models/jsonschema"
+	"github.com/stashapp/stash/pkg/utils"
+)
+
+type ImageGetter interface {
+	GetFrontImage(ctx context.Context, movieID int) ([]byte, error)
+	GetBackImage(ctx context.Context, movieID int) ([]byte, error)
+}
+
+// ToJSON converts a Movie into its JSON equivalent.
+func ToJSON(ctx context.Context, reader ImageGetter, studioReader models.StudioGetter, movie *models.Group) (*jsonschema.Group, error) {
+	newMovieJSON := jsonschema.Group{
+		Name:      movie.Name,
+		Aliases:   movie.Aliases,
+		Director:  movie.Director,
+		Synopsis:  movie.Synopsis,
+		URLs:      movie.URLs.List(),
+		CreatedAt: json.JSONTime{Time: movie.CreatedAt},
+		UpdatedAt: json.JSONTime{Time: movie.UpdatedAt},
+	}
+
+	if movie.Date != nil {
+		newMovieJSON.Date = movie.Date.String()
+	}
+	if movie.Rating != nil {
+		newMovieJSON.Rating = *movie.Rating
+	}
+	if movie.Duration != nil {
+		newMovieJSON.Duration = *movie.Duration
+	}
+
+	if movie.StudioID != nil {
+		studio, err := studioReader.Find(ctx, *movie.StudioID)
+		if err != nil {
+			return nil, fmt.Errorf("error getting movie studio: %v", err)
+		}
+
+		if studio != nil {
+			newMovieJSON.Studio = studio.Name
+		}
+	}
+
+	frontImage, err := reader.GetFrontImage(ctx, movie.ID)
+	if err != nil {
+		logger.Errorf("Error getting movie front image: %v", err)
+	}
+
+	if len(frontImage) > 0 {
+		newMovieJSON.FrontImage = utils.GetBase64StringFromData(frontImage)
+	}
+
+	backImage, err := reader.GetBackImage(ctx, movie.ID)
+	if err != nil {
+		logger.Errorf("Error getting movie back image: %v", err)
+	}
+
+	if len(backImage) > 0 {
+		newMovieJSON.BackImage = utils.GetBase64StringFromData(backImage)
+	}
+
+	return &newMovieJSON, nil
+}