#!/usr/bin/env ruby
# encoding: utf-8
=begin
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

The Software shall be used for Good, not Evil.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
=end

require 'rubygems'
require 'nokogiri'
require 'open-uri'
require 'net/http'


BASE_URL = 'http://www.yle.fi'
File.open("yle_vaalikone.txt", 'w'){ |f| f.write("") }



def scrape_constituency(url)
  list_of_cands = Nokogiri::HTML(open(url))
  district = list_of_cands.xpath("//div[@id='em-headingbar']/h2[1]").inner_html
  district = district.chomp(": Kaikki ehdokkaat")

  links = list_of_cands.xpath("//td[@class='em-cell-name']/a").collect[0..-1]
  cand_links = links.grep /\d\s/

  cand_links.each do |el|
    full_url = BASE_URL + el["href"]
    scrape_candidate(full_url, district)
  end
end


def scrape_candidate(url,district)
  cand = {:district => district}
  open_page = Nokogiri::HTML(open(url), nil, 'iso8859-1')

  # SCRAPE: GET INFO
  cand_info = open_page.xpath("//div[@class='em-details']")
  cand_name = cand_info.xpath("h3[1]")
  cand[:name] = cand_name.inner_html

  # get party
  find_cell = cand_info.xpath("dl[1]/dt[2]").to_s
  cand_party_raw =
    find_cell.include?('Puolue') ?
      cand_info.xpath("dl[1]/dd[2]") : cand_info.xpath("dl[1]/dd[1]")
  cand_party = cand_party_raw.inner_html
  cand[:party] = cand_party[/(.*)\s<br>/,1].strip

  # get age
  find_cell = cand_info.xpath("dl[1]/dt[4]").to_s
  cand_age_raw =
    find_cell.include?('Ik') ?
      cand_info.xpath("dl[1]/dd[4]") : cand_info.xpath("dl[1]/dd[3]")
  cand[:age] = cand_age_raw.inner_html

  # SCRAPE: GET ANSWERS
  cand[:opts] = [] # numeeriset vastaukset
  cand[:xopts] = [] # monivalinta
  q = open_page.xpath("//div[@class='em-compare-container']").collect[0..32]
  q.each do |a|
    question = a.xpath("h3").inner_html.strip
    qa = {:q => question}
    opt = a.xpath("table[1]/tr").collect[0..-1]
    opt.each_with_index do |b,opt_count|
      if b.xpath("td[1]").to_html.include? "acronym" # "&#9679;" html-merkki ongelmallinen
        # ehdokas on tätä mieltä..
        cleartxt = b.xpath("td[4]").inner_html.strip
        # talletetaan myös numeroarvo (1-5)
        qa.update({:a => cleartxt, :n => opt_count+1})
      end
    end
    # rekisteröidään myös tyhjät vastaukset
    cand[:opts] << qa
  end

  ### MONIVALINNAT

  # q34 - Mielestäni seuraavassa hallituksessa on oltava mukana:
  # q35 - Suosikkini tulevan hallituksen pääministeriksi on (vain yksi):
  (34..35).each do |q|
    _q = open_page.xpath("//div[@class='em-compare-container'][%i]" % [q])
    question = _q.xpath("h3").inner_html.strip
    #puts question
    opt = _q.xpath("table[1]/tr").collect[0..-1]
    a = [] # monivalinta
    opt.each do |b|
      if b.xpath("td[1]").to_html.include? "acronym"
        a << b.xpath("td[4]").inner_html.strip
      end
    end
    cand[:xopts] << {:q => question, :a => a.join(', ')}
  end

  ### TULOSTA JA TALLENNA
  print_and_save cand
  sleep 2 # älä kuormita YLEn palvelimia liikaa..

end


def print_and_save(cand)
  f = File.open("yle_vaalikone.txt", 'a')
  f.write "***\n"
  f.write [
    cand[:name],
    cand[:district],
    cand[:party],
    cand[:age]
  ].join("\t")
  f.write "\n"

  # numeeriset vastaukset pilkulla eroteltuina
  f.write cand[:opts].map{|h| h[:n]}.join(',')
  f.write "\n"

  f.write cand[:xopts].collect{|h| "%s %s" % [h[:q], h[:a]]}.join("\n")
  f.write "\n"
  f.close

  ### TULOSTA RUUDULLE

  puts [
    cand[:name],
    cand[:district],
    cand[:party],
    cand[:age],
    '============================================='
  ].join("\n")
  (cand[:opts] + cand[:xopts]).each do |h|
    # selväkielinen printti:
    puts "%s %s\n\n" % [h[:q], h[:a]]
  end

end


(1..16).each do |district|
  url = "%s/vaalikone11/index.php?emp=l-1.d-%i.s-3.q-1.ps-1" % [BASE_URL, district]
  scrape_constituency(url)
end