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/manager/jsonschema/image.go

@@ -0,0 +1,52 @@
+package jsonschema
+
+import (
+	"fmt"
+	"os"
+
+	jsoniter "github.com/json-iterator/go"
+	"github.com/stashapp/stash/pkg/models"
+)
+
+type ImageFile struct {
+	Size   int `json:"size"`
+	Width  int `json:"width"`
+	Height int `json:"height"`
+}
+
+type Image struct {
+	Title      string          `json:"title,omitempty"`
+	Checksum   string          `json:"checksum,omitempty"`
+	Studio     string          `json:"studio,omitempty"`
+	Rating     int             `json:"rating,omitempty"`
+	OCounter   int             `json:"o_counter,omitempty"`
+	Galleries  []string        `json:"galleries,omitempty"`
+	Performers []string        `json:"performers,omitempty"`
+	Tags       []string        `json:"tags,omitempty"`
+	File       *ImageFile      `json:"file,omitempty"`
+	CreatedAt  models.JSONTime `json:"created_at,omitempty"`
+	UpdatedAt  models.JSONTime `json:"updated_at,omitempty"`
+}
+
+func LoadImageFile(filePath string) (*Image, error) {
+	var image Image
+	file, err := os.Open(filePath)
+	defer file.Close()
+	if err != nil {
+		return nil, err
+	}
+	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	jsonParser := json.NewDecoder(file)
+	err = jsonParser.Decode(&image)
+	if err != nil {
+		return nil, err
+	}
+	return &image, nil
+}
+
+func SaveImageFile(filePath string, image *Image) error {
+	if image == nil {
+		return fmt.Errorf("image must not be nil")
+	}
+	return marshalToFile(filePath, image)
+}