class Kuroko2::ExecutionHistoriesController

def dataset
  set_period
  @histories = histories.where('started_at < ?', @end_at).where('finished_at > ?', @start_at)
end

def end_at
  if period_params[:end_at].present?
    begin
      return period_params[:end_at].to_datetime
    rescue ArgumentError
      # do nothing
    end
  end
  Time.current
end

def histories
  histories = Kuroko2::ExecutionHistory.ordered.includes(:job_definition, :job_instance)
  queue = query_params[:queue]
  histories = histories.where(queue: queue) if queue.present?
  hostname = query_params[:hostname]
  histories = histories.where(hostname: hostname) if hostname.present?
  histories
end

def index
  @histories = histories.page(params[:page])
end

def period_params
  params.permit(:period, :end_at, :start_at)
end

def query_params
  params.permit(:queue, :hostname)
end

def set_period
  @end_at = end_at
  @start_at = start_at
end

def start_at
  if period_params[:start_at].present?
    begin
      return period_params[:start_at].to_datetime
    rescue ArgumentError
      # do nothing
    end
  end
  case period_params[:period]
  when /\A(\d+)m\z/
    $1.to_i.minutes.ago(@end_at)
  when /\A(\d+)h\z/
    $1.to_i.hours.ago(@end_at)
  when /\A(\d+)d\z/
    $1.to_i.days.ago(@end_at)
  when /\A(\d+)w\z/
    $1.to_i.weeks.ago(@end_at)
  else
    1.hour.ago(@end_at)
  end
end

def timeline
end