module AdminHelper
  def format_bytes(bytes)
    return "—" if bytes.nil?

    units = %w[B KB MB GB TB]
    size = bytes.to_f
    unit = units.shift
    while size >= 1024 && units.any?
      size /= 1024
      unit = units.shift
    end
    "#{size.round(size >= 10 ? 0 : 1)} #{unit}"
  end

  def format_duration_minutes(minutes)
    return "0 min" if minutes.to_i <= 0

    hours = minutes / 60
    mins = minutes % 60
    hours.positive? ? "#{hours}h #{mins}m" : "#{mins} min"
  end

  def admin_session_watch_links(session)
    links = []
    if session.matchlivetv_platform?
      links << { label: I18n.t("admin.common.live_page"), url: session.watch_page_url }
    end
    youtube = session.youtube_watch_url
    links << { label: "YouTube", url: youtube } if youtube.present?
    links
  end

  def admin_session_ingest_badge_class(node)
    case node.role
    when "home" then "badge--ingest-home"
    when "lab" then "badge--ingest-lab"
    when "cloud" then "badge--ingest-cloud"
    else "badge--paused"
    end
  end

  def admin_session_ingest_role_label(node)
    I18n.t("admin.sessions.ingest.role.#{node.role}", default: node.role.to_s.humanize)
  end

  def admin_regia_expires_label(iso_time)
    return if iso_time.blank?

    Time.zone.parse(iso_time).strftime("%d/%m/%Y %H:%M")
  rescue ArgumentError, TypeError
    nil
  end

  def announcement_status_badge(item)
    case item.status
    when "published" then item.severity == "critical" ? "live" : "ready"
    when "archived" then "paused"
    else "connecting"
    end
  end

  def announcement_window_label(item)
    start_label = item.starts_at&.in_time_zone&.strftime("%d/%m %H:%M")
    end_label = item.ends_at&.in_time_zone&.strftime("%d/%m %H:%M")
    if start_label && end_label
      "#{start_label} → #{end_label}"
    elsif start_label
      I18n.t("admin.announcements.window.from", time: start_label)
    elsif end_label
      I18n.t("admin.announcements.window.until", time: end_label)
    else
      I18n.t("admin.announcements.window.always")
    end
  end

  def announcement_channels_label(item)
    labels = item.selected_channels.map { |key| I18n.t("admin.announcements.channels.#{key}") }
    labels.presence&.join(" · ") || I18n.t("admin.common.dash")
  end
end