defmodule Sukaato.CustomValidators do
  import Ecto.Changeset
  import Validate
  import Argon2

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

  @doc """
  Validate a map , array, or list column for an Ecto database table update.

  Arity: 3

  Return Value: changeset || add_err/3
  """
  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

  def encrypt_password(changeset, field \\ :password) when is_atom(field) do
    field_value = get_field(changeset, field)
    field_value = hash_pwd_salt(field_value)

    put_change(changeset, field, field_value)
    changeset
  end
end