TimeTable

TimeTable.java

public class TimeTable {
    List<String> week = new ArrayList<>();
    List<String> saturday = new ArrayList<>();
    List<String> sunday = new ArrayList<>();
    List<String> nextRides;
    
    public List<String> collectMinutes(String line, String hour) {
        return Arrays.asList(line.split(" ")).stream()
                   .filter(s -> !s.trim().isEmpty()).map(s -> hour + ":" + s.trim()).collect(Collectors.toList());
    }
    
    public void addHourLine(List<String> line) {
        String hour = line.get(0).replace("“", "");
        week.addAll(collectMinutes(line.get(1), hour));
        saturday.addAll(collectMinutes(line.get(2), hour));
        sunday.addAll(collectMinutes(line.get(3), hour));
    }
    
    public TimeTable fetchTimeTable(Stop stop) throws Exception {
        String url = URL_CONST + "/?ligne=" + stop.getLine() + "&head=" + stop.getHead().replaceAll("\\s", "%20") + "%7C" + stop.getLine() + "&arret=" + stop.getStopId();
        Document doc = Jsoup.connect(url).timeout(timeTableConnectionTimeout).get();

        String imageUrl = doc.select("#target_plan").attr("src").replaceAll(" ", "%20");

        TimeTable tt = new TimeTable();
        Tesseract instance = Tesseract.getInstance();
        try {
            instance.setPageSegMode(6); // Assume a single uniform block of text.
            String result = instance.doOCR(ImageIO.read(new URL(imageUrl)));
            System.out.println("OCR Ok");
            Arrays.asList(result.split("\n"))
                    .stream()
                    .filter(s -> s.contains("“")) // keep only time table entry
                    .map(s -> s.replaceAll("O", "0") + " ") // replace incorrectly detected zeros
                    .map(s -> Arrays.asList((s.split(" ")[0] + s.replaceAll(s.split(" ")[0], ";")).split(";"))) // accumulate hour and minutes
                    .forEach(line -> tt.addHourLine(line)); // add line to timetable
        } catch (TesseractException e) {
            // Please HELP
        }
        return tt;
    }
}