architex/lib/matrix_server_web/api/create_room.ex

defmodule MatrixServerWeb.API.CreateRoom do
  use Ecto.Schema

  import Ecto.Changeset

  alias Ecto.Changeset

  @primary_key false
  embedded_schema do
    field :visibility, :string
    field :room_alias_name, :string
    field :name, :string
    field :topic, :string
    field :invite, {:array, :string}
    field :room_version, :string
    field :preset, :string
    # TODO: unimplemented:
    # creation_content, initial_state, invite_3pid, initial_state,
    # is_direct, power_level_content_override
  end

  def changeset(params) do
    %__MODULE__{}
    |> cast(params, [
      :visibility,
      :room_alias_name,
      :name,
      :topic,
      :invite,
      :room_version,
      :preset
    ])
    |> validate_inclusion(:preset, ["private_chat", "public_chat", "trusted_private_chat"])
  end

  def get_error(%Changeset{errors: [error | _]}), do: get_error(error)
  def get_error(_), do: :bad_json
end