Main.java

import javax.swing.*;
import java.io.*;
import java.util.ArrayList;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");

        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (UnsupportedLookAndFeelException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        UserFrame userFrame = new UserFrame();
        while (true) {
            if (userFrame.isTmpCheck())
                break;
        }
        MainFrame frame = new MainFrame();
        frame.setUserName(userFrame.getText());
        int userAlive = 0;
        UserNames userNamesFromFile = null;
        String nameOfLibrary, nameOfPlaylists, nameOfAlbum;
        nameOfLibrary = userFrame.getText() + "library.txt";
        nameOfAlbum = userFrame.getText() + "album.txt";
        nameOfPlaylists = userFrame.getText() + "playlists.txt";

        File file0 = new File("UeserNames.txt");
        if (file0.exists()) {
            ObjectInputStream objectInputStream =
                    null;
            try {
                objectInputStream = new ObjectInputStream(new FileInputStream("UeserNames.txt"));
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                try {
                    userNamesFromFile = (UserNames) objectInputStream.readObject();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }

            try {
                objectInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (userNamesFromFile != null) {
            int i;
            for (i = 0; i < userNamesFromFile.getUserNameArraylist().size(); i++) {
                frame.userNames.setUserNameArraylist(userNamesFromFile.getUserNameArraylist().get(i));
                if (userNamesFromFile.getUserNameArraylist().get(i).equals(userFrame.getText())) {
                    userAlive = 1;
                }
            }
            if (userAlive == 0)
                frame.userNames.setUserNameArraylist(userFrame.getText());

        } else {
            frame.userNames.setUserNameArraylist(userFrame.getText());
        }
        Album library = null;
        File file = new File(nameOfLibrary);
        if (file.exists() && (file.length() > 122)) {
            ObjectInputStream objectInputStream =
                    null;
            try {
                objectInputStream = new ObjectInputStream(new FileInputStream(nameOfLibrary));
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                try {
                    library = (Album) objectInputStream.readObject();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }

            try {
                objectInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (library != null) {
            for (int i = 0; i < library.getSongs().size(); i++) {
                frame.library.setSong(library.getSongs().get(i));
            }
        }
        Albums albums = null;
        File file1 = new File(nameOfAlbum);
        if (file1.exists() && (file1.length() > 122)) {
            ObjectInputStream objectInputStream =
                    null;
            try {
                objectInputStream = new ObjectInputStream(new FileInputStream(nameOfAlbum));
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                try {
                    albums = (Albums) objectInputStream.readObject();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }

            try {
                objectInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (albums != null) {
            for (int i = 0; i < albums.getAlbumArrayList().size(); i++) {
                frame.albumArrayList.setAlbum(albums.getAlbumArrayList().get(i));
            }
        }
        Albums albums1 = null;
        File file2 = new File(nameOfPlaylists);
        if (file2.exists() && (file2.length() > 122)) {
            ObjectInputStream objectInputStream =
                    null;
            try {
                objectInputStream = new ObjectInputStream(new FileInputStream(nameOfPlaylists));
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                try {
                    albums1 = (Albums) objectInputStream.readObject();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }

            try {
                objectInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        int favoriteIsAlive = 0, sharedPlaylistIsAlive = 0;
        if (albums1 != null) {
            for (int i = 0; i < albums1.getAlbumArrayList().size(); i++) {
                frame.playLists.setAlbum(albums1.getAlbumArrayList().get(i));
                if (albums1.getAlbumArrayList().get(i).getName().equals("Favorites")) {
                    frame.leftPanel.getFavoriteSongs().addActionListener(frame.actionListenerForPlayList);
                    favoriteIsAlive = 1;

                } else if (albums1.getAlbumArrayList().get(i).getName().equals("SharedPlaylist")) {
                    frame.leftPanel.getSharedPlaylist().addActionListener(frame.actionListenerForPlayList);
                    sharedPlaylistIsAlive = 1;
                } else {
                    frame.leftPanel.getPlaylists().clear();
                    frame.leftPanel.addLableOfplaylist(frame.playLists.getAlbumArrayList().get(i).getName());
                    frame.leftPanel.getPlaylists().get(frame.leftPanel.getPlaylists().size() - 1).addActionListener(frame.actionListenerForPlayList);

                }
                frame.leftPanel.setVisible(false);
                frame.leftPanel.setVisible(true);
            }
        }
        if (favoriteIsAlive == 0) {
            frame.creatFavorite();
        }
        if (sharedPlaylistIsAlive == 0) {

            frame.creatSharedPlayList();
        }
        String myUsername = frame.getUserName();
        FileReader fileReader = null;
        try {
            fileReader = new FileReader("IPList.txt");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        Scanner scanner = new Scanner(fileReader);
        ArrayList<String> IPList = new ArrayList<>(100);
        while (scanner.hasNext())
            IPList.add(scanner.next());
        try {
            fileReader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        String myIpHost = "127.0.0.1";
        int myPort = 4000;
        String friendIp = "127.0.0.1";
        int friendPort = 5000;

        boolean [] allowAccess=new boolean[IPList.size()];
        for (int i = 0; i <IPList.size() ; i++) {
            allowAccess[i]=false;
        }
        for (int i = 0; i <IPList.size() ; i++) {
            if (IPList.get(i).equals(friendIp))
                allowAccess[i]=true;
        }
        Friend friend=null;
        for (int i = 0; i <IPList.size() ; i++) {
            if (allowAccess[i])
                friend = new Friend(frame.getUserName(), myIpHost, myPort, friendIp, friendPort);
        }

        while (true) {
            if (frame.isClicked() == true) {
                try {
                    friend.sendData(myUsername);
                    frame.setClicked(false);
                } catch (IOException e) {
                }
            }
        }

    }
}