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package dk.thoerup.traininfoservice.banedk;
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import java.util.ArrayList;
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import java.util.List;
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import com.gargoylesoftware.htmlunit.ProxyConfig;
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import com.gargoylesoftware.htmlunit.WebClient;
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import com.gargoylesoftware.htmlunit.html.DomNodeList;
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import com.gargoylesoftware.htmlunit.html.HtmlElement;
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import com.gargoylesoftware.htmlunit.html.HtmlPage;
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public class DepartureFetcher {
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static ProxyConfig proxyConfig;
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static {
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proxyConfig = new ProxyConfig();
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proxyConfig.setProxyHost("rafiki.t-hoerup.dk");
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proxyConfig.setProxyPort(3128);
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}
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public List<DepartureBean> lookupDepartures() throws Exception {
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List<DepartureBean> departureList = new ArrayList<DepartureBean>();
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final WebClient webClient = new WebClient();
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webClient.setTimeout(1000);
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webClient.setProxyConfig(proxyConfig);
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webClient.setJavaScriptEnabled(false);
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final HtmlPage page = webClient.getPage("http://www.bane.dk/visStation.asp?ArtikelID=4275&W=FJRN&S=BJ");
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HtmlElement table = page.getElementById("afgangtabel");
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DomNodeList<HtmlElement> tableRows = table.getElementsByTagName("tr");
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for (HtmlElement currentRow : tableRows) {
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String rowClass = currentRow.getAttribute("class");
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if (rowClass != null && rowClass.toLowerCase().contains("station") ) {
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DomNodeList<HtmlElement> fields = currentRow.getElementsByTagName("td");
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DepartureBean departure = new DepartureBean();
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String time = fields.get(0).asText();
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departure.setTime(time);
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int updated = extractUpdated( fields.get(1) );
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departure.setUpdated(updated);
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String trainNumber = fields.get(2).asText();
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departure.setTrainNumber(trainNumber);
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String destination = fields.get(3).asText();
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departure.setDestination(destination);
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String origin = fields.get(4).asText();
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departure.setOrigin(origin);
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String location = fields.get(5).asText();
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departure.setLocation(location);
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String status = fields.get(6).asText();
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departure.setStatus(status);
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String note = fields.get(7).asText();
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departure.setNote(note);
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departureList.add(departure);
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}
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}
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return departureList;
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}
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private int extractUpdated(HtmlElement updatedTd) { //extract the digit (in this case: 4) from "media/trafikinfo/opdater4.gif"
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int updated = -1;
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DomNodeList<HtmlElement> updatedImgs = updatedTd.getElementsByTagName("img");
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String updatedStr = updatedImgs.get(0).getAttribute("src");
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if (updatedStr != null) {
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for (int i=0; i<updatedStr.length(); i++) {
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char c = updatedStr.charAt(i);
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if ( Character.isDigit(c)) {
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updated = Character.digit(c, 10);
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break;
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}
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}
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}
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return updated;
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}
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//test
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public static void main(String args[]) throws Exception{
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DepartureFetcher f = new DepartureFetcher();
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List<DepartureBean> deps = f.lookupDepartures();
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for(DepartureBean d : deps) {
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System.out.println( d.getTime() + ";" + d.getUpdated() + ";" + d.getTrainNumber() + ";" +
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d.getDestination() + ";" + d.getOrigin() + ";" + d.getLocation() + ";" + d.getStatus() + ";" + d.getNote() );
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}
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System.out.println("--------------------------");
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}
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}
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