class Ransack::Nodes::Value

def array_of_arrays?(val)
  Array === val && Array === val.first
end

def cast(type)
  case type
  when :date
    cast_to_date(value)
  when :datetime, :timestamp, :time
    cast_to_time(value)
  when :boolean
    cast_to_boolean(value)
  when :integer
    cast_to_integer(value)
  when :float
    cast_to_float(value)
  when :decimal
    cast_to_decimal(value)
  when :money
    cast_to_money(value)
  else
    cast_to_string(value)
  end
end

def cast_to_boolean(val)
  if Constants::TRUE_VALUES.include?(val)
    true
  elsif Constants::FALSE_VALUES.include?(val)
    false
  else
    nil
  end
end

def cast_to_date(val)
  if val.respond_to?(:to_date)
    val.to_date rescue nil
  else
    y, m, d = *[val].flatten
    m ||= 1
    d ||= 1
    Date.new(y, m, d) rescue nil
  end
end

def cast_to_decimal(val)
 if val.blank?
   nil
 elsif val.class == BigDecimal
   val
 elsif val.respond_to?(:to_d)
   val.to_d
 else
   val.to_s.to_d
 end
end

def cast_to_float(val)
  val.blank? ? nil : val.to_f
end

def cast_to_integer(val)
  val.blank? ? nil : val.to_i
end

def cast_to_money(val)
  val.blank? ? nil : val.to_f.to_s
end

def cast_to_string(val)
  val.respond_to?(:to_s) ? val.to_s : String.new(val)
end

def cast_to_time(val)
  if val.is_a?(Array)
    Time.zone.local(*val) rescue nil
  else
    unless val.acts_like?(:time)
      val = val.is_a?(String) ? Time.zone.parse(val) : val.to_time rescue val
    end
    val.in_time_zone rescue nil
  end
end

def eql?(other)
  self.class == other.class && self.value == other.value
end

def hash
  value.hash
end

def initialize(context, value = nil)
  super(context)
  @value = value
end

def inspect
  "Value <#{value}>"
end

def persisted?
  false
end