1class Version
2  def initialize(name_product = nil, versions = nil, url = nil)
3    raise 'You must specify the name of the product' if name_product.nil?
4    raise 'You must specify the available versions of the product' if versions.nil?
5    raise 'You must specify the available url of the website' if url.nil?
6
7    @name = name_product
8    @versions = versions
9    @files = Hash['filenames' => [], 'files' => [], 'md5' => []]
10    @url = url
11    @got_best_versions = false
12    @best_versions = []
13
14    versions.each do |version|
15      version[1].each do |file|
16        next if @files['filenames'].include? file[0]
17        @files['filenames'].push(file[0])
18        @files['files'].push(URI.join(@url.to_s, file[0]).to_s)
19        status, url, ip, body, headers = open_target(@files['files'].last)
20        @files['md5'].push(Digest::MD5.hexdigest(body))
21      end
22    end
23  end
24
25  def best_matches
26    return @best_versions if @got_best_versions == true
27
28    @versions.each do |version|
29      count = 0
30      version[1].each do |file|
31        i = @files['filenames'].index(file[0])
32        count += 1 if @files['md5'][i] == file[1]
33      end
34      while !@best_versions.empty? && @best_versions[0][1] < count
35        @best_versions.delete_at(0)
36      end
37      if count > 0 && (@best_versions.empty? || @best_versions[0][1] == count) and \
38         !@best_versions.include? [version[0], count]
39        @best_versions.insert(0, [version[0], count])
40      end
41    end
42
43    @got_best_versions = true
44    @best_versions.flatten!
45
46    @best_versions.each_index { |i| @best_versions.delete_at(i + 1) }.sort!
47
48    @best_versions
49  end
50
51  def matches_format
52    self.best_matches if @got_best_versions == false
53    @best_versions
54  end
55end
56