restructure and process additions and deleteions of relationships, roles and memberships

internal/service/relationships.go

@@ -16,47 +16,19 @@ type IDPrefixableResource interface {
 }
 
 type Relationships struct {
-	Relationships []Relationship
-	Memberships   []ResourceMemberships
+	Resource             IDPrefixableResource
+	Parent               Relation
+	SubjectType          ObjectType
+	SubjectRelationships []Relation
+	Memberships          []ResourceMemberships
 }
 
-func (r Relationships) DeDupe() Relationships {
-	rels := make(map[string]bool)
-	mems := make(map[string]bool)
-
-	var results Relationships
-
-	for _, rel := range r.Relationships {
-		key := rel.Resource.PrefixedID().String() + "/" + string(rel.Relation) + "/" + rel.RelatedResource.PrefixedID().String()
-
-		if _, ok := rels[key]; !ok {
-			rels[key] = true
-
-			results.Relationships = append(results.Relationships, rel)
-		}
-	}
-
-	for _, member := range r.Memberships {
-		key := member.Resource.PrefixedID().String() + "/" + member.Role + "/" + member.Member.PrefixedID().String()
-
-		if _, ok := mems[key]; !ok {
-			mems[key] = true
-
-			results.Memberships = append(results.Memberships, member)
-		}
-	}
-
-	return results
-}
-
-type Relationship struct {
-	Resource        IDPrefixableResource
-	Relation        RelationshipType
-	RelatedResource IDPrefixableResource
+type Relation struct {
+	Relation RelationshipType
+	Resource IDPrefixableResource
 }
 
 type ResourceMemberships struct {
-	Resource IDPrefixableResource
-	Role     string
-	Member   IDPrefixableResource
+	Role   string
+	Member IDPrefixableResource
 }