defmodule MicrowavepropWeb.SandboxHook do
  @moduledoc """
  Test-only `on_mount` hook that allows a LiveView's connected mount to
  use the same Ecto Sandbox connection as the test that's driving it.

  Only wired in when `:sql_sandbox` is set (see `config/test.exs` and
  `MicrowavepropWeb.Endpoint`).
  """
  import Phoenix.Component, only: [assign_new: 3]
  import Phoenix.LiveView, only: [connected?: 1, get_connect_info: 2]

  alias Phoenix.LiveView.Socket

  @spec on_mount(atom(), map(), map(), Socket.t()) :: {:cont, Socket.t()}
  def on_mount(:default, _params, _session, socket) do
    socket =
      assign_new(socket, :phoenix_ecto_sandbox, fn ->
        if connected?(socket), do: get_connect_info(socket, :user_agent)
      end)

    result = Phoenix.Ecto.SQL.Sandbox.allow(socket.assigns.phoenix_ecto_sandbox, Ecto.Adapters.SQL.Sandbox)

    IO.puts("DEBUG SandboxHook connected?=#{connected?(socket)} self=#{inspect(self())} allow_result=#{inspect(result)}")

    {:cont, socket}
  end
end