class Ransack::Nodes::Grouping

def [](key)

def [](key)
  if condition = conditions.detect {|c| c.key == key.to_s}
    condition
  else
    nil
  end
end

def []=(key, value)

def []=(key, value)
  conditions.reject! {|c| c.key == key.to_s}
  self.conditions << value
end

def attribute_method?(name)

def attribute_method?(name)
  name = strip_predicate_and_index(name)
  case name
  when /^(g|c|m|groupings|conditions|combinator)=?$/
    true
  else
    name.split(/_and_|_or_/).select {|n| !@context.attribute_method?(n)}.empty?
  end
end

def build(params)

def build(params)
  params.with_indifferent_access.each do |key, value|
    case key
    when /^(g|c|m)$/
      self.send("#{key}=", value)
    else
      write_attribute(key.to_s, value)
    end
  end
  self
end

def build_condition(opts = {})

def build_condition(opts = {})
  new_condition(opts).tap do |condition|
    self.conditions << condition
  end
end

def build_grouping(params = {})

def build_grouping(params = {})
  params ||= {}
  new_grouping(params).tap do |new_grouping|
    self.groupings << new_grouping
  end
end

def conditions

def conditions
  @conditions ||= []
end

def conditions=(conditions)

def conditions=(conditions)
  case conditions
  when Array
    conditions.each do |attrs|
      condition = Condition.new(@context).build(attrs)
      self.conditions << condition if condition.valid?
    end
  when Hash
    conditions.each do |index, attrs|
      condition = Condition.new(@context).build(attrs)
      self.conditions << condition if condition.valid?
    end
  end
  self.conditions.uniq!
end

def groupings

def groupings
  @groupings ||= []
end

def groupings=(groupings)

def groupings=(groupings)
  case groupings
  when Array
    groupings.each do |attrs|
      grouping_object = new_grouping(attrs)
      self.groupings << grouping_object if grouping_object.values.any?
    end
  when Hash
    groupings.each do |index, attrs|
      grouping_object = new_grouping(attrs)
      self.groupings << grouping_object if grouping_object.values.any?
    end
  else
    raise ArgumentError, "Invalid argument (#{groupings.class}) supplied to groupings="
  end
end

def initialize(context, combinator = nil)

def initialize(context, combinator = nil)
  super(context)
  self.combinator = combinator.to_s if combinator
end

def method_missing(method_id, *args)

def method_missing(method_id, *args)
  method_name = method_id.to_s
  writer = method_name.sub!(/\=$/, '')
  if attribute_method?(method_name)
    writer ? write_attribute(method_name, *args) : read_attribute(method_name)
  else
    super
  end
end

def new_condition(opts = {})

def new_condition(opts = {})
  attrs = opts[:attributes] || 1
  vals = opts[:values] || 1
  condition = Condition.new(@context)
  condition.predicate = Predicate.named('eq')
  attrs.times { condition.build_attribute }
  vals.times { condition.build_value }
  condition
end

def new_grouping(params = {})

def new_grouping(params = {})
  Grouping.new(@context).build(params)
end

def persisted?

def persisted?
  false
end

def read_attribute(name)

def read_attribute(name)
  if self[name].respond_to?(:value)
    self[name].value
  else
    self[name]
  end
end

def respond_to?(method_id)

def respond_to?(method_id)
  super or begin
    method_name = method_id.to_s
    writer = method_name.sub!(/\=$/, '')
    attribute_method?(method_name) ? true : false
  end
end

def strip_predicate_and_index(str)

def strip_predicate_and_index(str)
  string = str.split(/\(/).first
  Ransack.predicate_keys.detect {|p| string.sub!(/_#{p}$/, '')}
  string
end

def translate(key, options = {})

def translate(key, options = {})
  super or Translate.attribute(key.to_s, options.merge(:context => context))
end

def values

def values
  conditions + groupings
end

def write_attribute(name, val)

def write_attribute(name, val)
  # TODO: Methods
  if condition = Condition.extract(@context, name, val)
    self[name] = condition
  end
end