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Ash DataLayer for Neo4j

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ash_neo4j lib verifiers verify_enrichable.ex
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lib/verifiers/verify_enrichable.ex 

# SPDX-FileCopyrightText: 2025 ash_neo4j contributors <https://github.com/diffo-dev/ash_neo4j/graphs.contributors>

#

# SPDX-License-Identifier: MIT



defmodule AshNeo4j.Verifiers.VerifyEnrichable do

  @moduledoc "Verifies that relate is unique so relationships are enrichable"

  use Spark.Dsl.Verifier



  alias Spark.Dsl.Verifier

  alias Spark.Error.DslError



  @impl true

  def verify(dsl) do

    relate = Verifier.get_option(dsl, [:neo4j], :relate, [])

    relate_no_names = Enum.into(relate, [], &Tuple.delete_at(&1, 0))



    if length(relate) == length(Enum.uniq(relate_no_names)) do

      :ok

    else

      resource = Verifier.get_persisted(dsl, :module)



      {:error,

       DslError.exception(

         module: resource,

         message:

           "relate: relationship enrichment not possible, edge_label, edge_direction and destination_label must be unique"

       )}

    end

  end

end