defmodule NLdoc.Spec.Table do
  @moduledoc """
  This module defines the Ecto schema for the NLdoc spec Table object.
  """
  use NLdoc.Spec.Schema, type: "https://spec.nldoc.nl/Resource/Table"

  alias NLdoc.Spec.{Paragraph, TableRow}

  typed_embedded_schema null: false do
    field :id, Ecto.UUID
    field :type, :string, default: @resource_type

    embeds_many :caption, Paragraph
    embeds_many :children, TableRow

    field(:descriptors, {:array, PolymorphicEmbed},
      types: map(NLdoc.Spec.descriptors()),
      type_field_name: :type,
      on_replace: :delete,
      default: [],
      array?: true
    ) :: [NLdoc.Spec.descriptor()]
  end

  def changeset(object, attrs) do
    object
    |> cast(attrs, [:id, :type], @cast_opts)
    |> cast_embed(:caption, @cast_opts)
    |> cast_embed(:children, @cast_opts)
    |> cast_polymorphic_embed(:descriptors, @cast_opts)
    |> validate_required([:id, :type])
    |> validate_inclusion(:type, [@resource_type])
  end
end