class Ransack::Nodes::Value

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

def cast_to_boolean(val)
  if val.is_a?(String) && val.blank?
    nil
  else
    Constants::TRUE_VALUES.include?(val)
  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_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 cast_to_type(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)
   else
     cast_to_string(value)
   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 persisted?
  false
end