# encoding: utf-8

require 'one_apm/support/event_buffer'
require 'one_apm/support/event_buffer/sized_buffer'

module OneApm
  module Agent
    class SyntheticsEventBuffer < SizedBuffer

      def append_with_reject(x)
        @seen += 1
        if full?
          timestamp = timestamp_for(x)
          latest_event = @items.max_by do |item|
            timestamp_for(item)
          end

          if timestamp < timestamp_for(latest_event)
            # Make room!
            @items.delete(latest_event)
            return [append_event(x), latest_event]
          else
            return [nil, x]
          end
        else
          return [append_event(x), nil]
        end
      end

      OA_TIMESTAMP = "timestamp".freeze

      def timestamp_for(event)
        main_event, _ = event
        main_event[OA_TIMESTAMP]
      end

    end
  end
end