package com.frozenframe;

import android.os.Handler;
import android.os.SystemClock;
import android.util.Log;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class TimerThread extends Thread {
    private boolean isRunning = true;
    private boolean blockThread = false;
    private HashMap<String, Long> timeSeriesMap;
    private List<String> timeStampsList;
    long previousTimestamp = 0;

    public TimerThread() {
        this.timeSeriesMap = new HashMap<String, Long>();
        this.timeStampsList = new ArrayList<String>();
    }

    @Override
    public void run() {
        while (isRunning) {
            if (!blockThread)
                updateMap();
        }
    }

    private void updateMap() {
        Long key = System.currentTimeMillis();
        Long value = SystemClock.uptimeMillis();
        if (timeSeriesMap.size() >= 3000) {
            timeSeriesMap.remove(timeStampsList.get(0));
            timeStampsList.remove(0);
        }
        if (previousTimestamp != key) {
            timeSeriesMap.put(key + "", value);
            timeStampsList.add(key + "");
            previousTimestamp = key;
        }

    }

    public void stopUpdating() {
        isRunning = false;
    }

    public HashMap<String, Long> getTimeStampMap() {
        blockThread = true;
        HashMap<String, Long> ans = new HashMap<String, Long>();
        ans.putAll(timeSeriesMap);
        blockThread = false;
        return ans;
    }
}