SedentaryStimulus.java

package com.example.stimulus;

import com.example.notification.Notification;
import com.example.notification.SedentaryNotification;
import com.example.stimulusStrategy.StimulusStrategy;

import java.util.Observable;

/**
 * Created by pharmacy on 09/01/2018.
 */

class SedentaryStimulus implements Stimulus {

    private StimulusStrategy strategy;

    public SedentaryStimulus(){
        chooseStrategy(null);
    }

    public SedentaryStimulus(StimulusStrategy s){
        chooseStrategy(s);
    }

    public Notification createNotification() {
        Notification notification = new SedentaryNotification();
        //Either further define this notification here or change to one line;
        return notification;
    }

    public void chooseStrategy(StimulusStrategy s) {
        if(s != null){
            strategy = s;
        } else{
            strategy = defaultStrategy;
        }
        strategy.addObserver(this);
    }


    @Override
    //Called by notify and will create Notification if required then send
    public void update(Observable observable, Object o) {
        //If a condition - such as time elapsed since last notification or not night time
        Notification notification = createNotification();
        notification.send();
    }
}