"""Queries for label participant nodes."""


merge_lp_nodes = """
MATCH (masterNode:LabelParticipant {uuid: $master_node_uuid})
MATCH (childNode:LabelParticipant)
WHERE childNode.uuid IN $child_node_uuids
OPTIONAL MATCH (childNode)-[:CREATED_FROM]->(o)
CALL apoc.util.validate(
    o IS NOT NULL,
    "A child node is still related in Art Relations: %s id %s",
    [labels(o)[0], o.id]
)
OPTIONAL MATCH (childNode)-[gpRel]-(:GlobalParticipant)
DELETE gpRel
WITH DISTINCT masterNode, childNode
OPTIONAL MATCH (childNode)-[labelRel]-(:Label)
DELETE labelRel
WITH masterNode, COLLECT(DISTINCT childNode) AS childNodes
CALL apoc.refactor.mergeNodes(
    [masterNode] + childNodes,
    {
        properties: "discard",
        mergeRels: false
    }
) YIELD node
RETURN 0
"""