// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.gui.layer.markerlayer;

import java.awt.event.ActionEvent;
import java.net.URL;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.tools.AudioPlayer;

/**
 * Marker class with audio playback capability.
 *
 * @author Frederik Ramm <frederik@remote.org>
 *
 */
public class AudioMarker extends ButtonMarker {

    private URL audioUrl;
    private static AudioMarker recentlyPlayedMarker = null;
    public double syncOffset;
    public boolean timeFromAudio = false; // as opposed to from the GPX track

    /**
     * Verifies the parameter whether a new AudioMarker can be created and return
     * one or return <code>null</code>.
     */
    public static AudioMarker create(LatLon ll, String text, String url, MarkerLayer parentLayer, double time, double offset) {
        try {
            return new AudioMarker(ll, text, new URL(url), parentLayer, time, offset);
        } catch (Exception ex) {
            return null;
        }
    }

    private AudioMarker(LatLon ll, String text, URL audioUrl, MarkerLayer parentLayer, double time, double offset) {
        super(ll, text, "speech.png", parentLayer, time, offset);
        this.audioUrl = audioUrl;
        this.syncOffset = 0.0;
        this.timeFromAudio = false;
    }

    @Override public void actionPerformed(ActionEvent ev) {
        play();
    }

    public static AudioMarker recentlyPlayedMarker() {
        return recentlyPlayedMarker;
    }

    public URL url() {
        return audioUrl;
    }

    /**
     * Starts playing the audio associated with the marker offset by the given amount
     * @param after : seconds after marker where playing should start
     */
    public void play(double after) {
        try {
            // first enable tracing the audio along the track
            Main.map.mapView.playHeadMarker.animate();

            AudioPlayer.play(audioUrl, offset + syncOffset + after);
            recentlyPlayedMarker = this;
        } catch (Exception e) {
            AudioPlayer.audioMalfunction(e);
        }
    }

    /**
     * Starts playing the audio associated with the marker: used in response to pressing
     * the marker as well as indirectly
     *
     */
    public void play() { play(0.0); }

    public void adjustOffset(double adjustment) {
        syncOffset = adjustment; // added to offset may turn out negative, but that's ok
    }

    public double syncOffset() {
        return syncOffset;
    }

    public static String inventName (double offset) {
        int wholeSeconds = (int)(offset + 0.5);
        if (wholeSeconds < 60)
            return Integer.toString(wholeSeconds);
        else if (wholeSeconds < 3600)
            return String.format("%d:%02d", wholeSeconds / 60, wholeSeconds % 60);
        else
            return String.format("%d:%02d:%02d", wholeSeconds / 3600, (wholeSeconds % 3600)/60, wholeSeconds % 60);
    }
}