defmodule DaProductApp.SaasKit do
  @moduledoc """
  Stubbed SaasKit module: integration removed. Each function returns
  {:error, :saas_kit_removed} so callers can detect the absence.
  """

  @reason {:error, :saas_kit_removed}

  # Subscription API
  def create_subscription(_user_id, _plan_id, _opts \\ %{}), do: @reason
  def get_subscription(_id), do: @reason
  def list_user_subscriptions(_user_id), do: @reason
  def update_subscription(_id, _opts), do: @reason
  def cancel_subscription(_id, _opts \\ %{}), do: @reason
  def resume_subscription(_id), do: @reason
  def get_subscription_usage(_id), do: @reason
  def list_plans(), do: @reason
  def get_plan(_id), do: @reason

  # Billing API
  def create_customer(_user_id, _params \\ %{}), do: @reason
  def get_customer(_id), do: @reason
  def update_customer(_id, _params), do: @reason
  def get_billing_history(_id, _opts \\ %{}), do: @reason
  def create_payment_method(_id, _data), do: @reason
  def list_payment_methods(_id), do: @reason
  def delete_payment_method(_id, _pm_id), do: @reason
  def create_invoice(_id, _items), do: @reason
  def get_invoice(_id), do: @reason
  def list_customer_invoices(_id, _opts \\ %{}), do: @reason
  def process_payment(_data), do: @reason
  def get_payment(_id), do: @reason
  def refund_payment(_id, _amount \\ nil), do: @reason

  # User management
  def create_user(_data), do: @reason
  def get_user(_id), do: @reason
  def update_user(_id, _data), do: @reason
  def delete_user(_id), do: @reason
  def list_users(_opts \\ %{}), do: @reason
  def authenticate_user(_email, _password), do: @reason
  def get_user_permissions(_id), do: @reason
  def update_user_permissions(_id, _perms), do: @reason
  def get_user_organization(_id), do: @reason
  def invite_user(_org_id, _email, _role \\ "member"), do: @reason
  def accept_invitation(_token, _data), do: @reason

  # Direct client calls
  def get(_path, _params \\ %{}), do: @reason
  def post(_path, _body \\ %{}), do: @reason
  def put(_path, _body \\ %{}), do: @reason
  def delete(_path), do: @reason
end