module Saneitized
  def self.convert(unknown)
    return Saneitized::Hash.new(unknown) if unknown.is_a? ::Hash
    return Saneitized::Array.new(unknown) if unknown.is_a? ::Array
    return unknown unless unknown.is_a? String #Only attempt to convert string
    return true  if unknown == 'true'
    return false if unknown == 'false'

    if value = Converter.integer?(unknown) then return value end
    if value = Converter.float?(unknown)   then return value end
    if value = Converter.time?(unknown)    then return value end

    unknown
  end

  module Converter
    extend self
    def integer?(unknown)
      Integer(unknown)
    rescue ArgumentError, TypeError
      false
    end

    def float?(unknown)
      Float(unknown)
    rescue ArgumentError, TypeError
      false
    end

    def time?(unknown)
      Time.parse(unknown)
    rescue ArgumentError, TypeError
      false
    end
  end

end