package synchronizator

import "fmt"

type Collection struct {
	Node
	childs []*Node
}

type collection_relation struct{}

func (collection *collection_relation) ToRelationship() (string, []byte, error) {
	return "IN_COLLECTION", nil, nil
}

func (collection *collection_relation) FromRelationship(_class string, metadata []byte) error {
	if _class != "IN_COLLECTION" {
		return fmt.Errorf("invalid class %s", _class)
	}
	return nil
}

func (collection *Collection) AddChild(node *Node) error {
	_, err := collection.AddRelation(&collection_relation{}, node.Id)
	if err != nil {
		return err
	}

	collection.childs = append(collection.childs, node)

	return nil
}

// func (node *Collection) Save() error {
// 	return node._conn.UpdateCollection(node.Id, node.metadata)
// }