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package org.leialearns.graph.structure;

import org.springframework.data.neo4j.annotation.Query;
import org.springframework.data.neo4j.repository.GraphRepository;

import java.util.Set;

public interface NodeRepository extends GraphRepository {
    Set findNodesByStructure(StructureDTO structure);

    @Query("START structure = node({0}) MATCH structure-[:HAS_ROOT]->rootNode RETURN rootNode")
    Set findRootNodes(StructureDTO structure);

    @Query("START parent = node({0}) MATCH parent-[:HAS_CHILD]->child RETURN child")
    Set findChildren(NodeDTO node);

    @Query("START structure = node({0}) MATCH structure-[:HAS_NODE]->(structureNode:Node) WHERE structureNode.path = {1} RETURN structureNode")
    NodeDTO getNodeByStructureAndPath(StructureDTO structure, String path);

    @Query("START child = node({0}) MATCH parent-[:HAS_CHILD]->child RETURN parent")
    NodeDTO getParent(NodeDTO node);
}