Move WissKI Parts to new ingredients system

internal/wisski/ingredient/bookkeeping/bookkeeping.go

@@ -0,0 +1,43 @@
+package bookkeeping
+
+import (
+	"github.com/FAU-CDI/wisski-distillery/internal/models"
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
+)
+
+// Bookkeeping provides instance bookkeeping
+type Bookkeeping struct {
+	ingredient.Base
+}
+
+// Save saves this instance in the bookkeeping table
+func (bk *Bookkeeping) Save() error {
+	sdb, err := bk.Malt.SQL.QueryTable(false, models.InstanceTable)
+	if err != nil {
+		return err
+	}
+
+	// it has never been created => we need to create it in the database
+	if bk.Instance.Created.IsZero() {
+		return sdb.Create(&bk.Instance).Error
+	}
+
+	// Update based on the primary key!
+	return sdb.Where("pk = ?", bk.Instance.Pk).Updates(&bk.Instance).Error
+}
+
+// Delete deletes this instance from the bookkeeping table
+func (bk *Bookkeeping) Delete() error {
+	sdb, err := bk.Malt.SQL.QueryTable(false, models.InstanceTable)
+	if err != nil {
+		return err
+	}
+
+	// doesn't exist => nothing to delete
+	if bk.Instance.Created.IsZero() {
+		return nil
+	}
+
+	// delete it directly
+	return sdb.Delete(&bk.Instance).Error
+}