module CorreosChile

# File lib/correos_chile.rb, line 7
def self.extract_useless_spaces(str)
  composed_word = ''
  partial_word = str.gsub(/[[:space:]]/, '')
  length = partial_word.length
  str.split(partial_word[length]).each_with_index do |word, i|
    next if word.nil? || word.strip.gsub(/[[:space:]]/, '').empty?
    composed_word += i + 1 == length ? word : "#{word} "
  end
  composed_word
end

# File lib/correos_chile.rb, line 18
def self.find(tracking_number)
  form_url = 'http://seguimientoweb.correos.cl/ConEnvCorreos.aspx'
  form_data = {
    obj_key: 'Cor398-cc',
    obj_env: tracking_number
  }
  response = HTTParty.post(form_url, body: form_data, options: { headers: { 'Content-Type' => 'application/x-www-form-urlencoded' } } )
  doc = Nokogiri::HTML.parse(response)
  return "The order doesn't exist" unless doc.css('.titulo').text.include?('Numero de envio')
  attributes = shipping_info(doc)
  Order.new(attributes)
end

# File lib/correos_chile.rb, line 31
def self.shipping_info(html_doc)
  table = html_doc.css('.tracking')[0]
  tr = table.css('tr')[1]
  return "Website's structure has change" unless tr
  tr_status = tr.css('td')[0].text.to_s.strip.gsub(/\A\p{Space}*/, '')
  tr_datetime = tr.css('td')[1].text.to_s.strip.gsub(/\A\p{Space}*/, '')
  {
    status: extract_useless_spaces(tr_status).strip,
    datetime: extract_useless_spaces(tr_datetime).strip
  }
rescue
  "Website's structure has change"
end