class YandexXml

# File lib/yandex_xml.rb, line 12
def initialize(args)
  @user = args[:user]
  @key = args[:key]
  @region = args.fetch(:region, '213') # Moscow
end

# File lib/yandex_xml.rb, line 19
def get(keyword)
  # Create URL to Yandex.Xml
  xml_url = create_url(keyword)
  # Get data XML
  xml = Net::HTTP.get_response(URI.parse(xml_url)).body
  # Convert XML to Hash
  converter = Nori.new(:convert_dashes_to_underscores => true)
  hash = converter.parse(xml)
  # Convert Hash to OpenStruct
  data = JSON.parse(hash.to_json, object_class: OpenStruct)
  # Create short route to data
  groups = data.yandexsearch.response.results.grouping.group

  result = {}

  result[:meta] = {
    keyword: data.yandexsearch.request.query,
    timestamp: Time.now
  }

  data_array = []

  groups.each_with_index do |i, index|
    result_hash = {
      position: index + 1,
      url: i.doc.url,
      domain: i.doc.domain,
      title: i.doc.title,
      modtime: i.doc.modtime,
      size: i.doc.size,
      charset: i.doc.charset,
      # passage: i.doc.passages.passage, # TODO: not work
      passages_type: i.doc.properties._PassagesType,
      mime_type: i.doc.mime_type,
      saved_copy_url: i.doc.saved_copy_url,
      headline: i.doc.headline,
      turbo_cgi_url: i.doc.properties.TurboCgiUrl,
      turbo_fallback: i.doc.properties.TurboFallback,
      turbo_link: i.doc.properties.TurboLink
    }

    data_array << result_hash
  end

  result[:data] = data_array
  result
end

# File lib/yandex_xml.rb, line 94
def get_limits
  # code
end

# File lib/yandex_xml.rb, line 78
def get_position(keyword, my_domain)
  hash = get(keyword)
  struct = JSON.parse(hash.to_json, object_class: OpenStruct)

  domains = []
  struct.data.each { |i| domains << i.domain.downcase }

  position = 0
  domains.each_with_index do |domain, i|
    position = i + 1 if domain == my_domain
  end

  position
end

# File lib/yandex_xml.rb, line 68
def get_top100_urls(keyword)
  hash = get(keyword)
  struct = JSON.parse(hash.to_json, object_class: OpenStruct)

  urls = []
  struct.data.each { |i| urls << i.url }
  urls
end

# File lib/yandex_xml.rb, line 101
def create_url(keyword)
  base_url = 'https://yandex.ru/search/xml?'
  tail_url = '&groupby=attr%3Dd.mode%3Ddeep.groups-on-page%3D100.docs-in-group%3D1'
  query_url = URI.encode_www_form([['user', @user], ['key', @key], ['query', keyword], ['lr', @region]])

  base_url + query_url + tail_url
end