package dew.demo.time;

import java.util.ArrayList;
import java.util.List;
import net.java.html.json.ComputedProperty;
import net.java.html.json.Model;
import net.java.html.json.ModelOperation;
import net.java.html.json.Property;

@Model(className = "ClockModel", properties = {
    @Property(name = "time", type = long.class)
})
final class ClockCntrl {
    @ComputedProperty static int second(long time) {
        long sec = time / 1000L;
        return (int)(sec % 60);
    }
    @ComputedProperty static int minute(long time) {
        long min = time / (60 * 1000L);
        return (int)(min % 60);
    }
    @ComputedProperty static int hour(long time) {
        return (int) exactHour(time);
    }
    private static double exactHour(long time) {
        double hour = time / (3600.0 * 1000);
        return Math.IEEEremainder(hour, 12.0);
    }
    
    @ComputedProperty static String transformSecond(long time) {
        return "rotate(" + (second(time) * 6 + 90) + "deg)";
    }

    @ComputedProperty static String transformMinute(long time) {
        return "rotate(" + (minute(time) * 6 + 90) + "deg)";
    }

    @ComputedProperty static String transformHour(long time) {
        return "rotate(" + (exactHour(time) * 30.0 + 90) + "deg)";
    }
    
    @ComputedProperty static List<String> transformByQuarter() {
        return anglesBy(90);
    }

    @ComputedProperty static List<String> transformByFive() {
        return anglesBy(30);
    }

    @ComputedProperty static List<String> transformByOne() {
        return anglesBy(6);
    }
    
    private static List<String> anglesBy(int by) {
        List<String> arr = new ArrayList<>();
        for (int angle = 0; angle < 360; angle += by) {
            arr.add("rotate(" + angle + "deg)");
        }
        return arr;
    }
    
    @ModelOperation static void update(final ClockModel model, final boolean repeating) {
        model.setTime(System.currentTimeMillis());
        if (repeating) {
            java.util.Timer timer = new java.util.Timer("Rotates a while");
            timer.schedule(new java.util.TimerTask() {
                @Override
                public void run() {
                    update(model, repeating);
                }
            }, 1000);
        }
    }
    
    static {
        new ClockModel().applyBindings().update(true);
    }
}