module Wikio

# File lib/wikio.rb, line 27
def self.get_first_link(wiki_url)
  uri = URI(wiki_url)
  body = Net::HTTP.get(uri)
  doc = Nokogiri::HTML(body)
  subdoc = doc.xpath(
    "//div[contains(@class, 'mw-parser-output')]/p/a"\
    " | //div[contains(@class, 'mw-parser-output')]/p/i/a"
  ).each do |node|
    href = node.attr('href')
    if href =~ /\A\/wiki/
      return WIKIPEDIA_DOMAIN + href
    end
  end
end

# File lib/wikio.rb, line 13
def self.get_wiki_url(term)
  params = {
    action: 'opensearch',
    search: term,
    limit: 1,
    namespace: 0,
    format: 'json'
  }
  uri = URI(WIKIPEDIA_API_URL)
  uri.query = URI.encode_www_form(params)
  res = Net::HTTP.get(uri)
  return JSON.parse(res)[3][0]
end