Southern Railway status scraper

SouthernStatusScraper1.rb

require 'nokogiri'
require 'date'
require 'open-uri'

lineCodes = ['.bm', '.ge','.re','.me']
goodLines = []
problemLines = []
subjectLine = ''
body = ''

#Get the Southern Homepage
page = Nokogiri::HTML(open('http://www.southernrailway.com'))

# Build the lists of good and problem lines
lineCodes.each do | line |
  if page.css(line + ' + span').text == ' Good service '
    goodLines.push(line)
    else
    problemLines.push(line)
  end
end

# Build Subject Line

if problemLines.length == 0
  subjectLine = "All Southern Lines running fine"
else
  subjectLine = "Train problems on: "
    problemLines.each do |problem|
    if problem == problemLines.last
        subjectLine.concat(page.css(problem).text.to_s)
      else
      subjectLine.concat(page.css(problem).text.to_s)
      subjectLine.concat(', ')
    end
  end
end

puts subjectLine

#Now build body of message 
if problemLines.length > 0
  body.concat("There are problems on the following lines \n")
  problemLines.each do |problem|
    body.concat(page.css(problem).text)
    body.concat("\n")
  end
end

if goodLines.length > 0
  body.concat("\n There is a good service on the following lines\n")
  goodLines.each do |good|
    body.concat(page.css(good).text)
    body.concat("\n")
  end
end

puts body