package ruscz.game.gameOfProd.Sounds;

import javax.sound.sampled.*;
import javax.swing.*;
import java.io.File;
import java.io.IOException;

/**
 * This class handles all music being played in the game
 */
public class MusicManager {
    private final String musicName;
    private float volume;
    private final float maxVolume;
    private FloatControl gainControl;
    private Timer timerIn;
    private Timer timerOut;
    private Clip clip;

    public MusicManager(String name, float volume){
        musicName = name;
        this.maxVolume = volume;
        this.volume = -40.0f;
    }

    /**
     * Starts playing music
     */
    public void playMusic(){
        AudioInputStream audioIn;
        try {
            audioIn = AudioSystem.getAudioInputStream(new File("src/main/resources/music/" + musicName));
            clip = AudioSystem.getClip();
            if (clip != null) {
                clip.open(audioIn);
            }
            if (clip != null) {
                gainControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
                gainControl.setValue(volume);
                clip.loop(1000);
                clip.start();
            }
        } catch (LineUnavailableException | IOException | UnsupportedAudioFileException e) {
            e.printStackTrace();
        }
    }

    /**
     * Stops playing music
     */
    public void stopMusic() {
        if (timerOut != null) timerOut.stop();
        clip.stop();
        volume = -40.0f;
    }

    public void setVolumeToMaxVolume(){
        gainControl.setValue(maxVolume);
    }

    public void setVolumeToNormalVolume(){
        gainControl.setValue(-40.0f);
    }

    /**
     * Fades music in (slowly raises volume to maxVolume)
     * @param delay is timer delay in milliseconds
     */
    public void fadeIn(int delay) {
        timerIn = new Timer(delay, actionEvent -> {
            if (volume < maxVolume) {
                volume += 0.1f;
                gainControl.setValue(volume);
            }
        });
        timerIn.start();
    }

    /**
     * Fades music out (slowly lowers volume to 'zero')
     * @param delay is timer delay in milliseconds
     */
    public void fadeOut(int delay) {
        timerOut = new Timer(delay, actionEvent -> {
            if (volume > -79.0f) {
                volume -= 0.1f;
                gainControl.setValue(volume);
            }
            else {
                stopMusic();
            }
        });
        timerIn.stop();
        timerOut.start();
    }
}