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@phoet /bahn.rb
Created Sep 24, 2013

What would you like to do?
scrub the deutsche bahn website for trains leaving hamburg main station to bergedorf
class Bahn
URL = 'http://reiseauskunft.bahn.de/bin/bhftafel.exe'
def initialize
@now = Time.now
@date = @now.strftime('%d.%m.%y')
@time = @now.strftime('%H:%M')
end
def scrape
@data = Curl.get(url).body_str
end
def parse
@doc = Nokogiri::HTML(@data)
end
def departures
@doc.xpath("//tr[starts-with(@id, 'journeyRow')]").each_with_index.map do |row, i|
begin
train = row.search(".train").last.content.strip.gsub(/\s+/, ' ')
hour, minute = row.search(".time").first.content.strip.split(':')
time = @now.change(hour: hour, min: minute)
{
id: train.chars.map(&:ord).sum + time.to_i,
time: time,
train: train,
route: row.search(".route").first.content.strip,
platform: row.search(".platform").first.content.strip,
}
rescue
Rails.logger.warn $!
end
end
end
def bergedorf
departures.select {|entry| entry[:route] =~ /Bergedorf/ }
end
def url
"#{URL}/?input=Hamburg+HBF&date=#{@date}&time=#{@time}&boardType=dep&GUIREQProduct_3=on&GUIREQProduct_4=on&GUIREQProduct_7=on&start=Suchen"
end
def self.all
instance = new
instance.scrape
instance.parse
instance.bergedorf
end
end
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