defmodule Ammoprices.Scraping.ScrapeJob do
  @moduledoc false
  use Oban.Worker, queue: :scraping, max_attempts: 3

  alias Ammoprices.Catalog
  alias Ammoprices.Scraping.Runner

  @scrapers [
    Ammoprices.Scraping.Retailers.LuckyGunner,
    Ammoprices.Scraping.Retailers.SgAmmo
  ]

  @impl Oban.Worker
  def perform(_job) do
    calibers = Catalog.list_calibers()

    for scraper <- @scrapers, caliber <- calibers do
      scrape_delay()
      Runner.run(scraper, caliber)
    end

    Phoenix.PubSub.broadcast(Ammoprices.PubSub, "prices:updated", {:prices_updated, %{}})

    :ok
  end

  # Random delay between requests: 5-15 seconds in prod, 0 in test
  defp scrape_delay do
    {min, max} = Application.get_env(:ammoprices, :scrape_delay_ms, {5_000, 15_000})
    delay = Enum.random(min..max)

    if delay > 0 do
      Process.sleep(delay)
    end
  end
end