Images section (#813)

* Add new configuration options
* Refactor scan/clean
* Schema changes
* Add details to galleries
* Remove redundant code
* Refine thumbnail generation
* Gallery overhaul
* Don't allow modifying zip gallery images
* Show gallery card overlays
* Hide zoom slider when not in grid mode

pkg/image/export.go

@@ -0,0 +1,81 @@
+package image
+
+import (
+	"github.com/stashapp/stash/pkg/manager/jsonschema"
+	"github.com/stashapp/stash/pkg/models"
+)
+
+// ToBasicJSON converts a image object into its JSON object equivalent. It
+// does not convert the relationships to other objects, with the exception
+// of cover image.
+func ToBasicJSON(image *models.Image) *jsonschema.Image {
+	newImageJSON := jsonschema.Image{
+		Checksum:  image.Checksum,
+		CreatedAt: models.JSONTime{Time: image.CreatedAt.Timestamp},
+		UpdatedAt: models.JSONTime{Time: image.UpdatedAt.Timestamp},
+	}
+
+	if image.Title.Valid {
+		newImageJSON.Title = image.Title.String
+	}
+
+	if image.Rating.Valid {
+		newImageJSON.Rating = int(image.Rating.Int64)
+	}
+
+	newImageJSON.OCounter = image.OCounter
+
+	newImageJSON.File = getImageFileJSON(image)
+
+	return &newImageJSON
+}
+
+func getImageFileJSON(image *models.Image) *jsonschema.ImageFile {
+	ret := &jsonschema.ImageFile{}
+
+	if image.Size.Valid {
+		ret.Size = int(image.Size.Int64)
+	}
+
+	if image.Width.Valid {
+		ret.Width = int(image.Width.Int64)
+	}
+
+	if image.Height.Valid {
+		ret.Height = int(image.Height.Int64)
+	}
+
+	return ret
+}
+
+// GetStudioName returns the name of the provided image's studio. It returns an
+// empty string if there is no studio assigned to the image.
+func GetStudioName(reader models.StudioReader, image *models.Image) (string, error) {
+	if image.StudioID.Valid {
+		studio, err := reader.Find(int(image.StudioID.Int64))
+		if err != nil {
+			return "", err
+		}
+
+		if studio != nil {
+			return studio.Name.String, nil
+		}
+	}
+
+	return "", nil
+}
+
+// GetGalleryChecksum returns the checksum of the provided image. It returns an
+// empty string if there is no gallery assigned to the image.
+// func GetGalleryChecksum(reader models.GalleryReader, image *models.Image) (string, error) {
+// 	gallery, err := reader.FindByImageID(image.ID)
+// 	if err != nil {
+// 		return "", fmt.Errorf("error getting image gallery: %s", err.Error())
+// 	}
+
+// 	if gallery != nil {
+// 		return gallery.Checksum, nil
+// 	}
+
+// 	return "", nil
+// }