# encoding: UTF-8

# Copyright 2012 Twitter, Inc
# http://www.apache.org/licenses/LICENSE-2.0

module TwitterCldr
  module Js
    module Renderers
      module Numbers
        class NumbersRenderer < TwitterCldr::Js::Renderers::Base
          set_template "mustache/numbers/numbers.coffee"

          def tokens
            DataReaders::NumberDataReader.types.inject({}) do |ret, type|
              ret[type] = {}
              [:positive, :negative].each do |sign|
                ret[type][sign] = case type
                  when :short_decimal, :long_decimal
                    (DataReaders::NumberDataReader::ABBREVIATED_MIN_POWER..DataReaders::NumberDataReader::ABBREVIATED_MAX_POWER).inject({}) do |formats, i|
                      exponent = 10 ** i
                      data_reader = DataReaders::NumberDataReader.new(@locale, :type => type, :format => exponent)
                      pattern = data_reader.pattern(exponent)
                      if pattern.is_a?(String)
                        tokens = data_reader.tokenizer.tokenize(pattern).map(&:value)
                        # abbreviation doesn't work for negative numbers in the Ruby version, so we have to fix it here
                        formats[exponent] = sign == :positive ? tokens : ["-"] + tokens[1..-1]
                      elsif pattern == 0
                        # there's no specific formatting pattern for these options, skipping them
                      else
                        puts "Invalid number pattern for locale=#{locale}, type=#{type}, sign=#{sign}, i=#{i}: #{pattern.inspect}"
                      end
                      formats
                    end
                  else
                    data_reader = DataReaders::NumberDataReader.new(@locale, :type => type)
                    number = sign == :positive ? 1 : -1
                    pattern = data_reader.pattern(number)
                    data_reader.tokenizer.tokenize(pattern).map(&:value)
                end
              end
              ret
            end.to_json
          end

          def symbols
            DataReaders::NumberDataReader.new(@locale).symbols.to_json
          end

          def currencies_data
            TwitterCldr.get_resource(:shared, :currency_digits_and_rounding).to_json
          end
        end
      end
    end
  end
end