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package mhd;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

/**
 *
 * @author martrin100
 */
public class Parser2 {
     public static void main(String[] args) throws IOException {

        String url19 = "http://imhd.zoznam.sk/ke/cestovny-poriadok/linka/19/smer/Nad-jazerom-Napajadla/zastavka/KVP-klastor/60436.html";
        Parser2 p = new Parser2(url19);
        List<String> columnTitles = p.getColumnTitles();
        System.out.println(p.parseColumn(1));
        System.out.println("titles:" + columnTitles);
        for (int i = 0; i < columnTitles.size(); i++) {
            System.out.printf("stlpec:%s casy:%s\n", columnTitles.get(i),p.parseColumn(i));
        }
     }

    private final String url;
    private Document doc;

    public Parser2(String url) {
        this.url = url;
        try {
            doc = Jsoup.parse(new URL(url), 1000 * 5);
        } catch (MalformedURLException ex) {
            throw new IllegalArgumentException(String.format("Mallformed URL:%s", url));
        } catch (IOException ex) {
            throw new IllegalArgumentException(String.format("IO excception occured while downloading:%s", url));
        }
    }

    public static class Zastavka {

        public final String meno;
        public final int cas;

        public Zastavka(String meno, int cas) {
            this.meno = meno;
            this.cas = cas;
        }

    }

    public static class Cas {

        public final int hodina;
        public final int minuta;

        public Cas(int hodina, int minuta) {
            this.hodina = hodina;
            this.minuta = minuta;
        }

        @Override
        public String toString() {
           return String.format("%02d:%02d",hodina, minuta);
        }



    }

    private Element getBase(int index) {
        return doc.getElementsByClass("cp_obsah").get(0).getElementsByTag("tr").get(index);
    }

    public List<String> getColumnTitles() {
        List<String> result = new ArrayList<>();
        for (Element el : getBase(0).getElementsByTag("td")) {
            result.add(el.text());
        }
        return result;
    }

    public List<Cas> parseColumn(int column) {
        Element base = getBase(1).getElementsByClass("cp_odchody_tabulka").get(column);
        List<Cas> result = new ArrayList<>();
        for (Element hodina : base.getElementsByClass("cp_odchody")) {
            result.addAll(parseHodina(hodina));
        }
        return result;
    }

    private List<Cas> parseHodina(Element cpOdchody) {
        Elements odchody = cpOdchody.getElementsByTag("td");
        Element odchod = cpOdchody.getElementsByClass("cp_hodina").get(0);
        odchody.remove(odchod);
        int hodina = Integer.parseInt(odchod.text());
        List<Cas> result = new ArrayList<>();
        for (Element element : filterMinuty(odchody)) {
            int minuta = Integer.parseInt(element.text());
            result.add(new Cas(hodina, minuta));
        }
        return result;
    }

    private List<Element> filterMinuty(List<Element> elements) {
        List<Element> result = new ArrayList<>();
        for (Element element : elements) {
            if (!isEmpty(element.text())) {
                result.add(element);
            }
        }
        return result;
    }

    private boolean isEmpty(String str) {
        if (str == null || str.isEmpty()) {
            return true;
        }
        boolean whitespacesOnly = true;
        for (Character ch : str.toCharArray()) {
            whitespacesOnly = whitespacesOnly && Character.isWhitespace(ch);
        }
        return whitespacesOnly;
    }

}