class ASTNode

# File lib/ast_node.rb, line 20
def initialize(raw_data)
  @root_node = nil
  @raw_data = raw_data
  @children = []
  @properties = {'graph_period' => "seconds","category" => "other"}
  @graph_properties = DEFAULT_GRAPH_PROPERTIES
  @graph_properties[:colorList] = default_colors
  @parent = nil
end

# File lib/ast_node.rb, line 43
def add_child(child)
  if self.root?
    child.root_node = self
  else
    child.root_node = self.root_node
  end

  child.parent = self
  children << child
end

# File lib/ast_node.rb, line 38
def children_of_class(klass)
  children.select { |i| i.is_a? klass }
end

# File lib/ast_node.rb, line 54
def compile
  # The compilation is done twice cause there are certain cases where is necessary, a better implementation would control whether this is needed
  # or not, but given the small impact I just do it twice
  children.map{|i| i.compile} if children
  children.map{|i| i.compile} if children
end

# File lib/ast_node.rb, line 30
def config=(config)
  self.properties.merge!(config)
end

# File lib/ast_node.rb, line 13
def default_colors
  %w(#00CC00 #0066B3 #FF8000 #FFCC00 #330099 #990099 #CCFF00 #FF0000 #808080
     #008F00 #00487D #B35A00 #B38F00         #6B006B #8FB300 #B30000 #BEBEBE
     #80FF80 #80C9FF #FFC080 #FFE680 #AA80FF #EE00CC #FF8080
     #666600 #FFBFFF #00FFCC #CC6699 #999900)
end

# File lib/ast_node.rb, line 66
def process_variables(properties)
  [:vtitle,:title].each do |key|
    aux = properties[key]
    properties[key].scan(/\$\{(.*)\}/).each do 
      if self.properties.has_key? $1
        aux.gsub!(/\$\{#{$1}\}/,self.properties[$1])
      end
    end if properties[key]
    properties[key] = aux

  end
end

# File lib/ast_node.rb, line 80
def properties_to_url
  
  # Color List initialization
  aux_graph_properties = self.graph_properties.clone
  process_variables(aux_graph_properties)
  aux_graph_properties[:colorList] = aux_graph_properties[:colorList].join(",") if aux_graph_properties[:colorList]

  # Change of the base stuff
  if  self.properties[:base]
    aux_graph_properties[:yMax] = aux_graph_properties[:yMax].to_f / self.properties[:base] 
    aux_graph_properties[:yMin] = aux_graph_properties[:yMin].to_f / self.properties[:base]
    aux_graph_properties.delete :yMax 
    aux_graph_properties.delete :yMin
  end

  aux = aux_graph_properties.map{|i,j| "#{i}=#{CGI.escape(j.to_s.gsub('%','percent'))}"}.join("&")
  return aux
end

# File lib/ast_node.rb, line 34
def root?
  @root_node == nil
end

# File lib/ast_node.rb, line 62
def targets
  children_of_class(FieldDeclarationNode)
end

# File lib/ast_node.rb, line 105
def to_gdash
  output = ""
  self.compile
  self.graph_properties.each do |k,v| 
    output += k.to_s + "\t\t" + '"' + v.to_s + '"' + "\n" unless k == :colorList || k == :yMin || k== :yMax
  end
  count = 0
  targets.each do |tg|
    metric_alias = tg.properties.delete(:alias)
    tg.children.delete_if { |i| i.class == LabelFieldPropertyNode}
    output += "field :#{tg.metric.split(".").last.to_sym},:alias => '#{metric_alias}', :data => \"#{tg.compile}\"\n"
    count += 1
  end
  return output
end

# File lib/ast_node.rb, line 100
def url
  self.compile
  url = "#{properties[:endpoint]}/render/?width=586&height=308&#{properties_to_url}&target=" + CGI.escape(targets.map{|i| i.compile}.compact.join("&target="))
end