defmodule Sukaato.CustomValidators do
  import Ecto.Changeset
  import Validate

  @moduledoc """
  Provide a collecton of custom validation functions for Ecto database
  database table update validation.
  """

  @doc """
  Validate a map or array/list column for an Ecto database table update.
  """
  def validate_map_format(changeset, field, conventional_mapping) when is_atom(field) do
    field_value = get_field(changeset, field)
    validation_result = validate(field_value, conventional_mapping)

    if elem(validation_result, 0) == :ok do
      changeset
    else
      add_error(changeset, field, "is not a valid map")
    end
  end
end