architex/lib/matrix_server_web/client/controllers/room_controller.ex

defmodule MatrixServerWeb.Client.RoomController do
  use MatrixServerWeb, :controller

  import MatrixServerWeb.Error
  import Ecto.Changeset

  alias MatrixServer.Room
  alias MatrixServerWeb.Client.Request.CreateRoom
  alias Ecto.Changeset
  alias Plug.Conn

  def create(%Conn{assigns: %{account: account}} = conn, params) do
    case CreateRoom.changeset(params) do
      %Changeset{valid?: true} = cs ->
        input = apply_changes(cs)

        case Room.create(account, input) do
          {:ok, room_id} ->
            conn
            |> put_status(200)
            |> json(%{room_id: room_id})

          {:error, :authorization} ->
            put_error(conn, :invalid_room_state)

          {:error, :unknown} ->
            put_error(conn, :unknown)
        end

      _ ->
        put_error(conn, :bad_json)
    end
  end
end