# File lib/money_helper.rb, line 83
def self.code_valid?(code)
  Money::Currency.stringified_keys.include?(code.downcase)
end

# File lib/money_helper.rb, line 87
def self.iso_for_currency(code)
  return unless code && code_valid?(code)

  Money::Currency.new(code).iso_code.tap do |iso_code|
    iso_code.strip! if iso_code.present?
  end
end

# File lib/money_helper.rb, line 69
def self.money_range_to_text(low, high, currency, delimiter = ' - ')
  if low.blank? && high.blank?
    nil
  elsif low.blank?
    'Under ' + money_to_text(high, currency)
  elsif high.blank?
    money_to_text(low, currency) + ' and up'
  elsif low == high
    money_to_text(low, currency)
  else
    [money_to_text(low, currency), money_to_text(high, currency, true)].compact.join(delimiter)
  end
end

# File lib/money_helper.rb, line 29
def self.money_to_text(amount, currency, number_only = false, options = {})
  return nil unless amount.present?

  currency = 'USD' if currency.blank?
  valid_currency = code_valid?(currency) ? currency : 'USD'
  symbol = symbol_for_code(currency)
  include_symbol = !number_only && symbol.present? && OK_SYMBOLS.include?(symbol)
  subunit_factor = Money::Currency.new(valid_currency).subunit_to_unit
  money_options = { no_cents: true, format: '%u %n', symbol: include_symbol }.merge(options)
  (number_only || SYMBOL_ONLY.include?(currency) ? '' : currency + ' ') +
    Money.new(amount * subunit_factor.ceil, valid_currency).format(money_options).delete(' ')
end

# File lib/money_helper.rb, line 95
def self.symbol_for_code(code)
  return unless code && code_valid?(code)

  Money::Currency.new(code).symbol.tap do |symbol|
    symbol.strip! if symbol.present?
  end
end

# File lib/money_helper.rb, line 42
def self.symbol_with_optional_iso_code(currency = 'USD')
  symbol = symbol_for_code(currency)
  if SYMBOL_ONLY.include?(currency)
    symbol
  elsif symbol && OK_SYMBOLS.include?(symbol)
    "#{iso_for_currency(currency)} #{symbol}"
  else
    iso_for_currency(currency).to_s
  end
end