nationalRail.groovy

@GrabConfig(systemClassLoader = true)

@Grapes([
        @Grab(group = 'commons-codec', module = 'commons-codec', version = '1.10'),
        @Grab(group = 'org.jsoup', module = 'jsoup', version = '1.8.1'),
        @Grab(group = 'commons-lang', module = 'commons-lang', version = '2.6'),
        @Grab(group = 'joda-time', module = 'joda-time', version = '2.3')
])

import org.jsoup.*
import org.jsoup.nodes.Document
import org.jsoup.nodes.Element
import org.jsoup.select.Elements

import java.text.MessageFormat

String selector = "tr.mtx"

String url = "http://ojp.nationalrail.co.uk/service/timesandfares/{0}/{1}/today/{2}/dep"
String fromStation = args.size() > 0 ? args[0] : "REI"
String toStation = args.size() > 1 ? args[1] : "LBG"

(8..10).each {
    String timeIn24Hours = String.format("%02d00", it)

    String formattedUrl = MessageFormat.format(url, fromStation, toStation, timeIn24Hours)

    Document doc = Jsoup.connect(formattedUrl).userAgent("Mozilla").get();
    Elements journeys = doc.select(selector)

    journeys.each { Element journey ->
        Elements journeyCols = journey.select("td")

        Map jd = journeyCols.collectEntries { Element col ->
            String className = col.className()
            [(className): getValueForClass(col, className)]
        }

        println("${jd.from} to ${jd.to}")
        println("${jd.dep} -> ${jd.arr} = ${jd.dur} <=> ${jd.status}")

        hr()
        sleep(3 * 1000)
    }

}


String getValueForClass(Element element, String className) {
    if (element.className() == className)
        return element.text()

    return null
}

void hr() {
    println "-" * 50
}

true