require "test_helper"

class Mailings::HourlyThroughputTest < ActiveSupport::TestCase
  setup do
    @project = projects(:matchlivetv)
    @identity = create_mail_identity
    @mailing = create_mailing(identity: @identity, audience: "all")
  end

  test "counts confirmed sends in the last hour and last 15 minutes" do
    add_recipient status: "sent", sent_at: 10.minutes.ago
    add_recipient status: "sent", sent_at: 40.minutes.ago, mailing: extra_mailing
    add_recipient status: "sent", sent_at: 2.hours.ago, mailing: extra_mailing("Vecchia")
    add_recipient status: "queued", mailing: extra_mailing("In coda")

    stats = Mailings::HourlyThroughput.new(@project)

    assert_equal 2, stats.sent
    assert_equal 1, stats.recent_sent
    assert_equal 0, stats.failed
    assert_equal 2, stats.drained
  end

  test "counts failed recipients that left the queue in the last hour" do
    recipient = add_recipient(status: "failed")
    recipient.update_columns(updated_at: 5.minutes.ago)

    stale = add_recipient(status: "failed", mailing: extra_mailing)
    stale.update_columns(updated_at: 2.hours.ago)

    stats = Mailings::HourlyThroughput.new(@project)

    assert_equal 0, stats.sent
    assert_equal 1, stats.failed
    assert_equal 1, stats.drained
  end

  test "ignores sends from other projects" do
    other = create_mailing(project: projects(:riskmeter), identity: @identity, audience: "all")
    add_recipient status: "sent", sent_at: 5.minutes.ago, mailing: other
    add_recipient status: "sent", sent_at: 5.minutes.ago

    stats = Mailings::HourlyThroughput.new(@project)

    assert_equal 1, stats.sent
    assert_equal 1, stats.recent_sent
  end

  test "builds twelve hourly buckets of confirmed sends" do
    now = Time.zone.parse("2026-09-07 12:40")
    travel_to now do
      add_recipient status: "sent", sent_at: now - 20.minutes
      add_recipient status: "sent", sent_at: now - 70.minutes, mailing: extra_mailing("Ore 11")
      add_recipient status: "sent", sent_at: now - 80.minutes, mailing: extra_mailing("Ore 11 bis")
      add_recipient status: "sent", sent_at: now - 13.hours, mailing: extra_mailing("Fuori finestra")

      stats = Mailings::HourlyThroughput.new(@project, now: now)
      history = stats.hourly_history

      assert_equal 12, history.size
      assert_equal now.beginning_of_hour, history.last[:at]
      assert_equal 1, history.last[:count]
      assert_equal 2, history[-2][:count]
      assert_equal 0, history.first[:count]
      assert_equal 3, stats.history_total
    end
  end

  private

  def extra_mailing(name = "Altra campagna")
    create_mailing(identity: @identity, audience: "all", name: name)
  end

  def add_recipient(status:, sent_at: nil, mailing: @mailing)
    org = organizations(:acme)
    mailing.mailing_recipients.create!(
      organization: org,
      contact: org.contacts.first,
      email: org.email,
      status: status,
      sent_at: sent_at
    )
  end
end