date.java

package com.pedromassango.programmers.extras;

import android.app.ActivityManager;
import android.content.Context;
import android.os.Process;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.widget.Toast;

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

import static com.pedromassango.programmers.extras.Constants.AcountStatus.INCOMPLETE;

/**
 * Created by Pedro Massango on 21-11-2016 at 21:35.
 */

public class Util {

    // TIME AGO
    private static final int SECOND_MILLIS = 1000;
    private static final int MINUTE_MILLIS = 60 * SECOND_MILLIS;
    private static final int HOUR_MILLIS = 60 * MINUTE_MILLIS;
    private static final int DAY_MILLIS = 24 * HOUR_MILLIS;

    public static String concat(Object... args) {
        String joineed = "";
        for (Object s : args) {
            joineed = joineed + " " + s;
        }
        return joineed;
    }

    public static String getTimeAgo(long time) {

        String MIN = " min";
        String HR = "h";
        String HA = "há";

        if (time < 1000000000000L) {
            // if timestamp given in seconds, convert to millis
            time *= 1000;
        }

        long now = System.currentTimeMillis();
        if (time <= 0) {
            return null;
        } else if (time > now) {
            time = now;
        }

        final long diff = now - time;
        if (diff < MINUTE_MILLIS) {
            return "agora";
        } else if (diff < 2 * MINUTE_MILLIS) {
            return concat(HA, join("1 ", MIN));
        } else if (diff < 50 * MINUTE_MILLIS) {
            return concat(HA, join((diff / MINUTE_MILLIS), MIN));
        } else if (diff < 90 * MINUTE_MILLIS) {
            return concat(HA, join("1 ", HR));
        } else if (diff < 24 * HOUR_MILLIS) {
            return concat(HA, join((diff / HOUR_MILLIS), HR));
        } else if (diff < 48 * HOUR_MILLIS) {
            return concat(HA, "1 d");
        } else if ((diff / DAY_MILLIS) > 30) {
            Calendar c = Calendar.getInstance();
            c.setTimeInMillis(time);
            int day = c.get(Calendar.DAY_OF_MONTH);
            int month = c.get(Calendar.MONTH) + 1;
            int year = c.get(Calendar.YEAR);
            return String.format("%s/%s/%s", day, month, year);
        } else {
            return concat(HA, join((diff / DAY_MILLIS), "d"));
        }
    }

    public static long getTime() {
        return System.currentTimeMillis();
    }
}