require 'css_parser'
require 'load_dir'
require 'format'
require 'html_parser'

class ParseDir < LoadDir
  include Format
  include HtmlParser
  include CssParser

  attr_accessor :css, :html

  def initialize(args)
    super(args)
    @css = {}
    @html = {}
    self.segregate
    self.parse_css
  end

  def css?(file)
    true if /\.css\S*\z/.match(file)
  end

  def html?(file)
    true if/\.html\S*\z/.match(file)
  end

  def segregate
    self.files.each do |file, path|
      if self.css?(file)
        self.css[file] = path
      elsif self.html?(file)
        self.html[file] = path
      end
    end
  end

  def parse_css
    hash = {}
    self.css.each do |file, path|
      parser = CssParser::Parser.new
      parser.load_file!(file, path, :all)
      parser.each_selector(:all) do |selector, dec, spec|
        unless /(^\/|\$|@|\d|:hover)/.match(selector)
          hash[selector] = dec
        end
      end
    end
    hash
  end

  def found hash=self.parse_css 
    tmp = {}
    self.html.each do |file|
      hash.each do |sel, des|
        if sel.match("#")
          tmp[sel] = des if id_exists?(sel, file.last) == true
        elsif sel.match(/^\./)
          tmp[sel] = des if class_exists?(sel, file.last) == true
        elsif sel.match(/^\w/)
          tmp[sel] = des if  parent_exists?(sel, file.last) == true
        end
      end
    end
    tmp
  end

  def empty
    hash = {}
    all = self.parse_css.inject([]) {|a, k| a << k}
    found_css = self.found.inject([]) {|a, k| a << k}
    empty_css = all - found_css
    empty_css.each {|arr| hash[arr.first] = arr.last}
    hash
  end

  def success?
    if self.write_index
     ParseDir.success_message
    else
     ParseDir.failure_message
    end
  end

  def self.success_message
   puts Time.now.strftime("%B %d %Y %r")
   puts "Your report was generated at #{Dir.pwd}/old_style/index/html"
   true
  end

end