class Date
  include ErrorHelper

  def self.build_date_array(start_date, end_date)
    start_date = start_date.to_date
    end_date   =  end_date.to_date

    raise_start_date_before_end_date if (start_date > end_date)

    date_array = []
    processable_date = start_date.dup
    while processable_date <= end_date
      date_array << processable_date
      processable_date = processable_date.tomorrow
    end

    date_array
  end

  def self.range(start, _end)
    start.to_date.beginning_of_day.._end.to_date.end_of_day
  end

  def build_date_array(date)
    date = date.to_date

    if self < date
      start_date = self
      end_date = date
    else
      start_date = date
      end_date = self
    end

    return Date.build_date_array(start_date, end_date)
  end

  def array_with_pre_churn_limit(count_of_additional_days)
    explicit_limit_date = (self + count_of_additional_days.days)
    now = Time.zone.now.to_date
    cutoff_date = (explicit_limit_date > now ? now.yesterday : explicit_limit_date)
    return Date.build_date_array(self, cutoff_date)
  end

end