# frozen_string_literal: true

require "rails_helper"

RSpec.describe Streams::QuietHours do
  def with_env(vars)
    previous = vars.keys.index_with { |k| ENV[k] }
    vars.each { |k, v| ENV[k] = v }
    yield
  ensure
    previous.each { |k, v| v.nil? ? ENV.delete(k) : ENV[k] = v }
  end

  it "is active inside the Rome window" do
    with_env(
      "STREAM_AUTOSCALE_QUIET_HOURS" => "02:00-07:00",
      "STREAM_AUTOSCALE_QUIET_TZ" => "Europe/Rome"
    ) do
      now = Time.find_zone!("Europe/Rome").local(2026, 9, 5, 3, 30)
      expect(described_class.active?(now: now)).to eq(true)
    end
  end

  it "is inactive outside the window" do
    with_env(
      "STREAM_AUTOSCALE_QUIET_HOURS" => "02:00-07:00",
      "STREAM_AUTOSCALE_QUIET_TZ" => "Europe/Rome"
    ) do
      now = Time.find_zone!("Europe/Rome").local(2026, 9, 5, 10, 0)
      expect(described_class.active?(now: now)).to eq(false)
    end
  end

  it "can be disabled with off" do
    with_env("STREAM_AUTOSCALE_QUIET_HOURS" => "off") do
      now = Time.find_zone!("Europe/Rome").local(2026, 9, 5, 3, 0)
      expect(described_class.active?(now: now)).to eq(false)
    end
  end
end