snapshots: Handle as separate components

internal/component/instances/instances.go

@@ -37,6 +37,16 @@ var errSQL = exit.Error{
 	ExitCode: exit.ExitGeneric,
 }
 
+// Instance is a convenience function to return an instance based on a model slug.
+// When the instance does not exist, returns nil.
+func (instances *Instances) Instance(instance models.Instance) *WissKI {
+	i, err := instances.WissKI(instance.Slug)
+	if err != nil {
+		return nil
+	}
+	return &i
+}
+
 // WissKI returns the WissKI with the provided slug, if it exists.
 // It the WissKI does not exist, returns ErrWissKINotFound.
 func (instances *Instances) WissKI(slug string) (i WissKI, err error) {

internal/component/instances/wisski_pathbuilders.go

@@ -1,14 +1,9 @@
 package instances
 
 import (
-	"fmt"
-	"path/filepath"
-
 	_ "embed"
 
-	"github.com/FAU-CDI/wisski-distillery/pkg/environment"
 	"github.com/tkw1536/goprogram/stream"
-	"golang.org/x/exp/maps"
 	"golang.org/x/exp/slices"
 )
 
@@ -34,26 +29,3 @@ func (wisski *WissKI) AllPathbuilders() (pathbuilders map[string]string, err err
 	err = wisski.ExecPHPScript(stream.FromDebug(), &pathbuilders, exportPathbuilderPHP, "all_xml")
 	return
 }
-
-// ExportPathbuilders writes pathbuilders into the directory dest
-func (wisski *WissKI) ExportPathbuilders(dest string) error {
-	pathbuilders, err := wisski.AllPathbuilders()
-	if err != nil {
-		return err
-	}
-
-	// sort the names of the pathbuilders
-	names := maps.Keys(pathbuilders)
-	slices.Sort(names)
-
-	// write each into a file!
-	for _, name := range names {
-		pbxml := []byte(pathbuilders[name])
-		name := filepath.Join(dest, fmt.Sprintf("%s.xml", name))
-		if err := environment.WriteFile(wisski.instances.Core.Environment, name, pbxml, environment.DefaultFilePerm); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}