module NostrManager
  class FetchLatestEvent < NostrManagerService
    TIMEOUT = 20

    def initialize(relays:, filter:, max_events: 2)
      @relays = relays
      @filter = filter
      @max_events = max_events
    end

    def call
      events = []

      begin
        Timeout.timeout(TIMEOUT) do
          @relays.each do |url|
            event = NostrManager::FetchEvent.call(filter: @filter, relay_url: url)

            if event.present? && events.none? { |e| e["id"] == event["id"] }
              events << event
              break if events.size >= @max_events
            end
          end
        end
      rescue Timeout::Error
        Rails.logger.debug "[nostr] Timeout after #{TIMEOUT}s, found #{events.size} events"
      end

      events.max_by { |e| e["created_at"] }
    end
  end
end