class Holidays::Finder::Context::NextHoliday

def call(holidays_count, from_date, options)
  validate!(holidays_count, from_date)
  regions, observed, informal = @options_parser.call(options)
  holidays = []
  ret_holidays = []
  opts = gather_options(observed, informal)
  # This could be smarter but I don't have any evidence that just checking for
  # the next 12 months will cause us issues. If it does we can implement something
  # smarter here to check in smaller increments.
  dates_driver = @dates_driver_builder.call(from_date, from_date >> 12)
  ret_holidays = @definition_search.call(dates_driver, regions, opts)
  ret_holidays.sort{|a, b| a[:date] <=> b[:date] }.each do |holiday|
    if holiday[:date] >= from_date
      holidays << holiday
      holidays_count -= 1
      break if holidays_count == 0
    end
  end
  holidays.sort{|a, b| a[:date] <=> b[:date] }
end

def gather_options(observed, informal)
  opts = []
  opts << :observed if observed == true
  opts << :informal if informal == true
  opts
end

def initialize(definition_search, dates_driver_builder, options_parser)
  @definition_search = definition_search
  @dates_driver_builder = dates_driver_builder
  @options_parser = options_parser
end

def validate!(holidays_count, from_date)
  raise ArgumentError unless holidays_count
  raise ArgumentError if holidays_count <= 0
  raise ArgumentError unless from_date
end