MusicPlayerGUI.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class MusicPlayerGUI extends JFrame {
    private List<Media> playlist = new ArrayList<>();
    private DefaultListModel<String> listModel = new DefaultListModel<>();
    private JList<String> songListDisplay;
    
    private JSlider progressSlider, volumeSlider;
    private JLabel currentTimeLabel, totalTimeLabel;
    private int currentSongIndex = -1;
    private boolean isUserChangingSlider = false;

    public MusicPlayerGUI() {
        setTitle("Java Music Player");
        setSize(500, 450);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setLayout(new BorderLayout(10, 10));

        // --- ŞARKI LİSTESİ ---
        loadSongsFromFolder("songs");
        songListDisplay = new JList<>(listModel);
        add(new JScrollPane(songListDisplay), BorderLayout.CENTER);

        // --- KONTROL PANELİ ---
        JPanel southPanel = new JPanel();
        southPanel.setLayout(new BoxLayout(southPanel, BoxLayout.Y_AXIS));

        // 1. İlerleme Çubuğu (Spotify Style)
        JPanel progressPanel = new JPanel(new BorderLayout(5, 0));
        currentTimeLabel = new JLabel("00:00");
        totalTimeLabel = new JLabel("00:00");
        progressSlider = new JSlider(0, 100, 0);
        
        progressPanel.add(currentTimeLabel, BorderLayout.WEST);
        progressPanel.add(progressSlider, BorderLayout.CENTER);
        progressPanel.add(totalTimeLabel, BorderLayout.EAST);

        // 2. Butonlar
        JPanel buttonPanel = new JPanel();
        JButton playBtn = new JButton("▶");
        JButton stopBtn = new JButton("■");
        JButton skipBtn = new JButton("⏭");
        buttonPanel.add(playBtn);
        buttonPanel.add(stopBtn);
        buttonPanel.add(skipBtn);

        // 3. Ses Ayarı
        JPanel volumePanel = new JPanel();
        volumeSlider = new JSlider(0, 100, 70);
        volumePanel.add(new JLabel("Vol:"));
        volumePanel.add(volumeSlider);

        // İSİM ETİKETİ 
        JLabel nameLabel = new JLabel("Made by: Ceyhun KEKLIK (TrezmikiS) "); 
        nameLabel.setFont(new Font("Arial", Font.ITALIC, 10));
        nameLabel.setForeground(Color.GRAY); 
        nameLabel.setHorizontalAlignment(SwingConstants.RIGHT);

        southPanel.add(progressPanel);
        southPanel.add(buttonPanel);
        southPanel.add(volumePanel);
        southPanel.add(nameLabel);
        add(southPanel, BorderLayout.SOUTH);

        // --- EVENTLER ---
        playBtn.addActionListener(e -> playSelected());
        stopBtn.addActionListener(e -> { if(currentSongIndex != -1) playlist.get(currentSongIndex).stop(); });
        skipBtn.addActionListener(e -> skipSong());

        // Slider'a elle müdahale
        progressSlider.addMouseListener(new MouseAdapter() {
            @Override public void mousePressed(MouseEvent e) { isUserChangingSlider = true; }
            @Override public void mouseReleased(MouseEvent e) {
                if (currentSongIndex != -1) {
                    playlist.get(currentSongIndex).setPosition(progressSlider.getValue());
                }
                isUserChangingSlider = false;
            }
        });

        // Ses değişimi
        volumeSlider.addChangeListener(e -> {
            if (currentSongIndex != -1) {
                playlist.get(currentSongIndex).setVolume(volumeSlider.getValue() / 100f);
            }
        });

        // Arayüzü güncelleyen Timer
        Timer timer = new Timer(500, e -> updateUI());
        timer.start();
    }

    private void playSelected() {
        int index = songListDisplay.getSelectedIndex();
        if (index != -1) {
            if (currentSongIndex != -1) playlist.get(currentSongIndex).stop();
            currentSongIndex = index;
            Media current = playlist.get(currentSongIndex);
            current.play();
            current.setVolume(volumeSlider.getValue() / 100f);
        }
    }

    private void skipSong() {
        if (playlist.isEmpty()) return;
        if (currentSongIndex != -1) playlist.get(currentSongIndex).stop();
        currentSongIndex = (currentSongIndex + 1) % playlist.size();
        songListDisplay.setSelectedIndex(currentSongIndex);
        playSelected();
    }

    private void updateUI() {
        if (currentSongIndex != -1 && playlist.get(currentSongIndex).isPlaying() && !isUserChangingSlider) {
            Media current = playlist.get(currentSongIndex);
            long curSec = current.getCurrentSeconds();
            long totalSec = current.getTotalSeconds();

            progressSlider.setMaximum((int) totalSec);
            progressSlider.setValue((int) curSec);
            currentTimeLabel.setText(current.formatTime(curSec));
            totalTimeLabel.setText(current.formatTime(totalSec));
        }
    }

    private void loadSongsFromFolder(String folderPath) {
        File folder = new File(folderPath);
        if (!folder.exists()) folder.mkdir(); // Klasör yoksa oluştur
        
        File[] files = folder.listFiles((dir, name) -> name.toLowerCase().endsWith(".wav"));
        if (files != null) {
            for (File f : files) {
                playlist.add(new Song(f.getName(), f.getPath()));
                listModel.addElement(f.getName());
            }
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new MusicPlayerGUI().setVisible(true));
    }
}