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A central library with tools and utils for the MediathekView Client and the MediathekView Server
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/*    
 *    MediathekView
 *    Copyright (C) 2008   W. Xaver
 *    W.Xaver[at]googlemail.com
 *    http://zdfmediathk.sourceforge.net/
 *    
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see .
 */
package de.mediathekview.mlib.tool;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Date;


public class Duration {

    private static Date stopZeitStatic = new Date(System.currentTimeMillis());
    private static final DecimalFormat DF = new DecimalFormat("###,##0.00");
    private static int sum = 0;
    private static final ArrayList COUNTER_LIST = new ArrayList<>();

    private static class Counter {

        String text;
        int count;
        long time;
        Date start;

        public Counter(String nr, int count) {
            this.text = nr;
            this.count = count;
            start = new Date();
        }
    }

    public static synchronized void counterStart(String text) {
        Counter cc = null;
        for (Counter c : COUNTER_LIST) {
            if (c.text.equals(text)) {
                cc = c;
                break;
            }
        }
        if (cc == null) {
            COUNTER_LIST.add(new Counter(text, 0));
        } else {
            cc.start = new Date();
        }
    }

    public static synchronized void counterStop(String text) {
        final Throwable t = new Throwable();
        final StackTraceElement methodCaller = t.getStackTrace()[2];
        final String klasse = methodCaller.getClassName() + "." + methodCaller.getMethodName();
        String kl;
        try {
            kl = klasse;
            while (kl.contains(".")) {
                if (Character.isUpperCase(kl.charAt(0))) {
                    break;
                } else {
                    kl = kl.substring(kl.indexOf(".") + 1);
                }
            }
        } catch (Exception ignored) {
            kl = klasse;
        }

        String extra = "";
        Counter cc = null;
        for (Counter c : COUNTER_LIST) {
            if (c.text.equals(text)) {
                cc = c;
                break;
            }
        }
        if (cc != null) {
            cc.count++;
            try {
                final long time = Math.round(new Date().getTime() - cc.start.getTime());
                cc.time += time;
                extra = cc.text + " Anzahl: " + cc.count + "   Dauer: " + roundDuration(time);
            } catch (Exception ex) {
            }
        }

        staticPing(kl, text, extra);
    }

    public static synchronized void printCounter() {
        int max = 0;
        for (Counter c : COUNTER_LIST) {
            if (c.text.length() > max) {
                max = c.text.length();
            }
        }
        max++;
        for (Counter c : COUNTER_LIST) {
            while (c.text.length() < max) {
                c.text = c.text + " ";
            }
        }

        System.out.println("");
        System.out.println("");
        System.out.println("#################################################################");
        for (Counter c : COUNTER_LIST) {
            System.out.println(c.text + " Anzahl: " + c.count + "   Gesamtdauer: " + roundDuration(c.time));
        }
        System.out.println("#################################################################");
        System.out.println("");
    }

    public synchronized static void staticPing(String text) {
        final Throwable t = new Throwable();
        final StackTraceElement methodCaller = t.getStackTrace()[2];
        final String klasse = methodCaller.getClassName() + "." + methodCaller.getMethodName();
        String kl;
        try {
            kl = klasse;
            while (kl.contains(".")) {
                if (Character.isUpperCase(kl.charAt(0))) {
                    break;
                } else {
                    kl = kl.substring(kl.indexOf(".") + 1);
                }
            }
        } catch (Exception ignored) {
            kl = klasse;
        }
        staticPing(kl, text, "");
    }

    private static void staticPing(String klasse, String text, String extra) {
        Date now = new Date(System.currentTimeMillis());
        long sekunden;
        try {
            sekunden = Math.round(now.getTime() - stopZeitStatic.getTime());
        } catch (Exception ex) {
            sekunden = -1;
        }
        System.out.println("");
        System.out.println("========== ========== ========== ========== ==========");
        System.out.println("DURATION " + sum++ + ":  " + text + "  [" + roundDuration(sekunden) + "]");
        System.out.println("   Klasse:  " + klasse);
        if (!extra.isEmpty()) {
            System.out.println("   " + extra);
        }
        System.out.println("========== ========== ========== ========== ==========");
        System.out.println("");

        stopZeitStatic = now;
    }

    public static String roundDuration(long s) {
        String ret;
        if (s > 1_000.0) {
            ret = DF.format(s / 1_000.0) + " s";
        } else {
            ret = DF.format(s) + " ms";
        }

        return ret;
    }

}