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/models/int64.go

@@ -0,0 +1,39 @@
+package models
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+
+	"github.com/99designs/gqlgen/graphql"
+	"github.com/stashapp/stash/pkg/logger"
+)
+
+var ErrInt64 = errors.New("cannot parse Int64")
+
+func MarshalInt64(v int64) graphql.Marshaler {
+	return graphql.WriterFunc(func(w io.Writer) {
+		_, err := io.WriteString(w, strconv.FormatInt(v, 10))
+		if err != nil {
+			logger.Warnf("could not marshal int64: %v", err)
+		}
+	})
+}
+
+func UnmarshalInt64(v interface{}) (int64, error) {
+	if tmpStr, ok := v.(string); ok {
+		if len(tmpStr) == 0 {
+			return 0, nil
+		}
+
+		ret, err := strconv.ParseInt(tmpStr, 10, 64)
+		if err != nil {
+			return 0, fmt.Errorf("cannot parse %v as Int64: %w", tmpStr, err)
+		}
+
+		return ret, nil
+	}
+
+	return 0, fmt.Errorf("%w: not a string", ErrInt64)
+}