class Holidays::Definition::Repository::Cache

def cache_between(start_date, end_date, cache_data, options)
  raise ArgumentError unless cache_data
  raise ArgumentError unless start_date && end_date
  @cache_range[options] = start_date..end_date
  @cache[options] = cache_data.group_by { |holiday| holiday[:date] }
end

def find(start_date, end_date, options)
  return nil unless in_cache_range?(start_date, end_date, options)
  if start_date == end_date
    @cache[options].fetch(start_date, [])
  else
    @cache[options].select do |date, holidays|
      date >= start_date && date <= end_date
    end.flat_map { |date, holidays| holidays }
  end
end

def in_cache_range?(start_date, end_date, options)
  range = @cache_range[options]
  if range
    range.begin <= start_date && range.end >= end_date
  else
    false
  end
end

def initialize
  reset!
end

def reset!
  @cache = {}
  @cache_range = {}
end