package service

import (
	"context"

	"github.com/neo4j/neo4j-go-driver/v5/neo4j"

	"knowledge-graph-backend/internal/model"
)

func (s *Neo4jService) fetchNodeByID(id string) (model.Node, bool, error) {
	ctx := context.Background()
	result, err := neo4j.ExecuteQuery(ctx, s.driver,
		`MATCH (n {id: $id}) RETURN n LIMIT 1`,
		map[string]any{"id": id},
		neo4j.EagerResultTransformer,
	)
	if err != nil {
		return model.Node{}, false, err
	}
	if len(result.Records) == 0 {
		return model.Node{}, false, nil
	}

	v, _ := result.Records[0].Get("n")
	n, ok := v.(neo4j.Node)
	if !ok {
		return model.Node{}, false, nil
	}
	return neo4jNodeToModel(n), true, nil
}