refactor schema folder

backend/internal/data/ent/schema/group.go

@@ -5,6 +5,7 @@ import (
 	"entgo.io/ent/dialect/entsql"
 	"entgo.io/ent/schema/edge"
 	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/mixin"
 	"github.com/hay-kot/homebox/backend/internal/data/ent/schema/mixins"
 )
 
@@ -33,34 +34,36 @@ func (Group) Fields() []ent.Field {
 
 // Edges of the Home.
 func (Group) Edges() []ent.Edge {
+	owned := func(name string, t any) ent.Edge {
+		return edge.To(name, t).
+			Annotations(entsql.Annotation{
+				OnDelete: entsql.Cascade,
+			})
+	}
+
 	return []ent.Edge{
-		edge.To("users", User.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
-		edge.To("locations", Location.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
-		edge.To("items", Item.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
-		edge.To("labels", Label.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
-		edge.To("documents", Document.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
-		edge.To("invitation_tokens", GroupInvitationToken.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
-		edge.To("notifiers", Notifier.Type).
-			Annotations(entsql.Annotation{
-				OnDelete: entsql.Cascade,
-			}),
+		owned("users", User.Type),
+		owned("locations", Location.Type),
+		owned("items", Item.Type),
+		owned("labels", Label.Type),
+		owned("documents", Document.Type),
+		owned("invitation_tokens", GroupInvitationToken.Type),
+		owned("notifiers", Notifier.Type),
+	}
+}
+
+// GroupMixin when embedded in an ent.Schema, adds a reference to
+// the Group entity.
+type GroupMixin struct {
+	ref string
+	mixin.Schema
+}
+
+func (g GroupMixin) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("group", Group.Type).
+			Ref(g.ref).
+			Unique().
+			Required(),
 	}
 }