tusker_push/lib/tusker_push.ex

defmodule TuskerPush do
  @moduledoc """
  TuskerPush keeps the contexts that define your domain
  and business logic.

  Contexts are also responsible for managing your data, regardless
  if it comes from the database, an external API or others.
  """

  alias TuskerPush.Registration
  alias TuskerPush.Repo

  @spec register(Map.t()) ::
          {:ok, Registration.t()} | {:error, Ecto.Changeset.t()}
  def register(params) do
    params
    |> Registration.create_changeset()
    |> Repo.insert()
  end

  @spec unregister(String.t()) :: :ok | {:error, :no_registration | Ecto.Changeset.t()}
  def unregister(id) do
    with registration when not is_nil(registration) <- Repo.get(Registration, id),
         {:ok, _} <- Repo.delete(registration) do
      :ok
    else
      nil ->
        {:error, :no_registration}

      {:error, reason} ->
        {:error, reason}
    end
  end
end