File storage rewrite (#2676)

* Restructure data layer part 2 (#2599)
* Refactor and separate image model
* Refactor image query builder
* Handle relationships in image query builder
* Remove relationship management methods
* Refactor gallery model/query builder
* Add scenes to gallery model
* Convert scene model
* Refactor scene models
* Remove unused methods
* Add unit tests for gallery
* Add image tests
* Add scene tests
* Convert unnecessary scene value pointers to values
* Convert unnecessary pointer values to values
* Refactor scene partial
* Add scene partial tests
* Refactor ImagePartial
* Add image partial tests
* Refactor gallery partial update
* Add partial gallery update tests
* Use zero/null package for null values
* Add files and scan system
* Add sqlite implementation for files/folders
* Add unit tests for files/folders
* Image refactors
* Update image data layer
* Refactor gallery model and creation
* Refactor scene model
* Refactor scenes
* Don't set title from filename
* Allow galleries to freely add/remove images
* Add multiple scene file support to graphql and UI
* Add multiple file support for images in graphql/UI
* Add multiple file for galleries in graphql/UI
* Remove use of some deprecated fields
* Remove scene path usage
* Remove gallery path usage
* Remove path from image
* Move funscript to video file
* Refactor caption detection
* Migrate existing data
* Add post commit/rollback hook system
* Lint. Comment out import/export tests
* Add WithDatabase read only wrapper
* Prepend tasks to list
* Add 32 pre-migration
* Add warnings in release and migration notes

pkg/file/image/scan.go

@@ -0,0 +1,39 @@
+package image
+
+import (
+	"context"
+	"fmt"
+	"image"
+
+	_ "image/gif"
+	_ "image/jpeg"
+	_ "image/png"
+
+	"github.com/stashapp/stash/pkg/file"
+	_ "golang.org/x/image/webp"
+)
+
+// Decorator adds image specific fields to a File.
+type Decorator struct {
+}
+
+func (d *Decorator) Decorate(ctx context.Context, fs file.FS, f file.File) (file.File, error) {
+	base := f.Base()
+	r, err := fs.Open(base.Path)
+	if err != nil {
+		return f, fmt.Errorf("reading image file %q: %w", base.Path, err)
+	}
+	defer r.Close()
+
+	c, format, err := image.DecodeConfig(r)
+	if err != nil {
+		return f, fmt.Errorf("decoding image file %q: %w", base.Path, err)
+	}
+
+	return &file.ImageFile{
+		BaseFile: base,
+		Format:   format,
+		Width:    c.Width,
+		Height:   c.Height,
+	}, nil
+}