15 files changed, 855 insertions, 0 deletions
diff --git a/src/META-INF/MANIFEST.MF b/src/META-INF/MANIFEST.MF
new file mode 100644
index 0000000..37197ef
--- /dev/null
+++ b/src/META-INF/MANIFEST.MF
@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Main-Class: Main
+
diff --git a/src/Main.java b/src/Main.java
new file mode 100644
index 0000000..e3a030a
--- /dev/null
+++ b/src/Main.java
@@ -0,0 +1,23 @@
+import Store.ConnectionHandler;
+import UI.MainWindow;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class Main {
+    public static void main(String[] args) {
+        try {
+            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+        }
+        catch (UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException |
+               IllegalAccessException _) {
+        }
+
+        new ConnectionHandler("jdbc:sqlite:LibMan.db").connect();
+
+        EventQueue.invokeLater(() -> {
+            MainWindow w = new UI.MainWindow();
+            w.setVisible(true);
+        });
+    }
+}
+\ No newline at end of file
diff --git a/src/Server/JSONMessage.java b/src/Server/JSONMessage.java
new file mode 100644
index 0000000..c3f9712
--- /dev/null
+++ b/src/Server/JSONMessage.java
@@ -0,0 +1,19 @@
+package Server;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.Map;
+
+public class JSONMessage {
+    private Map data;
+
+    public JSONMessage(String json) throws JsonProcessingException {
+        ObjectMapper mapper = new ObjectMapper();
+        data = mapper.readValue(json, Map.class);
+    }
+
+    public Map getData() {
+        return data;
+    }
+}
diff --git a/src/Server/SocketIOMessage.java b/src/Server/SocketIOMessage.java
new file mode 100644
index 0000000..8e6167a
--- /dev/null
+++ b/src/Server/SocketIOMessage.java
@@ -0,0 +1,17 @@
+package Server;
+
+public class SocketIOMessage {
+    private String message;
+
+    public SocketIOMessage(String message) {
+        this.message = message;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+}
diff --git a/src/Server/SocketServer.java b/src/Server/SocketServer.java
new file mode 100644
index 0000000..f3a8f2e
--- /dev/null
+++ b/src/Server/SocketServer.java
@@ -0,0 +1,53 @@
+package Server;
+
+import Store.Book;
+import Store.User;
+import com.corundumstudio.socketio.SocketIOServer;
+import com.corundumstudio.socketio.listener.ConnectListener;
+import com.corundumstudio.socketio.listener.DisconnectListener;
+import com.corundumstudio.socketio.Configuration;
+
+public class SocketServer {
+    public static SocketIOServer server;
+
+    public SocketServer(Configuration config) {
+        server = new SocketIOServer(config);
+
+        server.addConnectListener(onConnected());
+        server.addDisconnectListener(onDisconnected());
+
+        server.addEventListener("login", JSONMessage.class, User.loginHandler());
+        server.addEventListener("signUp", JSONMessage.class, User.signUpHandler());
+
+        server.addEventListener("issue", JSONMessage.class, Book.issueHandler());
+        server.addEventListener("return", JSONMessage.class, Book.returnHandler());
+        server.addEventListener("getAllBooks", JSONMessage.class, Book.getListHandler(false));
+        server.addEventListener("getAvailableBooks", JSONMessage.class, Book.getListHandler(true));
+    }
+
+    private ConnectListener onConnected() {
+        return (client -> {
+            System.out.println("New connection!");
+        });
+    }
+
+    private DisconnectListener onDisconnected() {
+        return (client -> {
+            System.out.println("Disconnected!");
+        });
+    }
+
+    public void start() {
+        server.start();
+
+        Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
+            public void run() {
+                server.stop();
+            }
+        }, "Shutdown-thread"));
+    }
+
+    public void stop() {
+        server.stop();
+    }
+}
diff --git a/src/Store/Book.java b/src/Store/Book.java
new file mode 100644
index 0000000..4232d77
--- /dev/null
+++ b/src/Store/Book.java
@@ -0,0 +1,214 @@
+package Store;
+
+import Server.JSONMessage;
+import Server.SocketServer;
+import UI.MainWindow;
+import com.corundumstudio.socketio.listener.DataListener;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.Map;
+
+public class Book {
+    private int id;
+    private String title;
+    private String author;
+    private int issuedBy;
+    private String issuedByName = "";
+
+    public Book(int id) {
+        this.id = id;
+    }
+
+    public Book(String title, String author) {
+        this.title = title;
+        this.author = author;
+        this.issuedBy = 0; // 0 means available since IDs start with 1
+    }
+
+    public Book(int id, String title, String author, int issuedBy, String issuedByName) {
+        this.id = id;
+        this.title = title;
+        this.author = author;
+        this.issuedBy = issuedBy;
+        this.issuedByName = issuedByName;
+    }
+
+    public String getTitle() {
+        return this.title;
+    }
+
+    public String getAuthor() {
+        return this.author;
+    }
+
+    public int getIssuedBy() {
+        return this.issuedBy;
+    }
+
+    public int getId() {
+        return this.id;
+    }
+
+    public String getIssuedByName() {
+        return issuedByName;
+    }
+
+    public int bookIssuedBy() throws SQLException {
+        String sql = "SELECT issuedBy from Book where ID = " + this.id;
+        Statement statement = ConnectionHandler.connection.createStatement();
+
+        ResultSet response = statement.executeQuery(sql);
+        while (response.next()) {
+            return response.getInt("issuedBy");
+        }
+
+        return 0;
+    }
+
+    public boolean issue(int userId) throws SQLException {
+        if (bookIssuedBy() == 0) {
+            String sql = "UPDATE Book SET issuedBy = ? where ID = ?";
+            PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
+
+            statement.setInt(1, userId);
+            statement.setInt(2, this.id);
+
+            statement.executeUpdate();
+
+            ArrayList<Book> allBooks = Book.getAll(false);
+            UI.Components.BooksList.refreshBooks(allBooks);
+            if (MainWindow.serverStarted) {
+                SocketServer.server.getBroadcastOperations().sendEvent("booksUpdated", allBooks);
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+
+    public boolean returnBook(int userId) throws SQLException {
+        if (bookIssuedBy() == userId) {
+            String sql = "UPDATE Book SET issuedBy = 0 where ID = ?";
+            PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
+
+            statement.setInt(1, this.id);
+
+            statement.executeUpdate();
+
+            ArrayList<Book> allBooks = Book.getAll(false);
+            UI.Components.BooksList.refreshBooks(allBooks);
+            if (MainWindow.serverStarted) {
+                SocketServer.server.getBroadcastOperations().sendEvent("booksUpdated", allBooks);
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+
+    public void save() throws SQLException {
+        String sql = "INSERT INTO Book (title, author, issuedBy) VALUES (?, ?, ?)";
+
+        PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
+
+        statement.setString(1, title);
+        statement.setString(2, author);
+        statement.setInt(3, issuedBy);
+
+        statement.executeUpdate();
+
+        ArrayList<Book> allBooks = Book.getAll(false);
+        UI.Components.BooksList.refreshBooks(allBooks);
+        if (MainWindow.serverStarted) {
+            SocketServer.server.getBroadcastOperations().sendEvent("booksUpdated", allBooks);
+        }
+    }
+
+    public void delete() throws SQLException {
+        String sql = "DELETE FROM Book WHERE ID = ?";
+        PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
+
+        statement.setInt(1, this.id);
+
+        statement.executeUpdate();
+
+        ArrayList<Book> allBooks = Book.getAll(false);
+        UI.Components.BooksList.refreshBooks(allBooks);
+        if (MainWindow.serverStarted) {
+            SocketServer.server.getBroadcastOperations().sendEvent("booksUpdated", allBooks);
+        }
+    }
+
+    public static ArrayList<Book> getAll(boolean availableOnly) throws SQLException {
+        ArrayList<Book> books = new ArrayList<>();
+
+        String sql;
+        if (availableOnly) {
+            sql = "SELECT * FROM Book WHERE issuedBy = 0";
+        } else {
+            sql = "SELECT Book.ID, Book.title, Book.issuedBy, Book.author, " +
+                    "User.userName FROM Book LEFT JOIN User ON User.ID = Book.issuedBy";
+        }
+        Statement statement = ConnectionHandler.connection.createStatement();
+
+        ResultSet response = statement.executeQuery(sql);
+        while (response.next()) {
+            books.add(new Book(response.getInt("ID"), response.getString("title"), response.getString("author"), response.getInt("issuedBy"), response.getString("userName")));
+        }
+
+        return books;
+    }
+
+    public static DataListener<JSONMessage> getListHandler(boolean availableOnly) {
+        return ((client, data, ackSender) -> {
+            ArrayList<Book> books = getAll(availableOnly);
+            client.sendEvent(availableOnly ? "availableBooksList" : "allBooksList", books);
+        });
+    }
+
+    public static DataListener<JSONMessage> issueHandler() {
+        return ((client, data, ackSender) -> {
+            Map d = data.getData();
+
+            int userId = (int) d.get("id");
+            Book b = new Book((int) d.get("bookId"));
+
+            if (b.issue(userId)) {
+                client.sendEvent("issued");
+            } else {
+                client.sendEvent("alreadyIssued");
+            }
+        });
+    }
+
+    public static DataListener<JSONMessage> returnHandler() {
+        return ((client, data, ackSender) -> {
+            Map d = data.getData();
+
+            int userId = (int) d.get("id");
+            Book b = new Book((int) d.get("bookId"));
+
+            if (b.returnBook(userId)) {
+                client.sendEvent("returned");
+            } else {
+                client.sendEvent("returnFailed");
+            }
+        });
+    }
+
+    public static void createTable() throws SQLException {
+        String sql = "CREATE TABLE IF NOT EXISTS Book (" +
+                "ID INTEGER NOT NULL PRIMARY KEY, " +
+                "title TEXT NOT NULL, " +
+                "author text NOT NULL, " +
+                "issuedBy INTEGER NOT NULL," +
+                "FOREIGN KEY(issuedBy) REFERENCES User(ID)" +
+                ");";
+
+        Statement statement = ConnectionHandler.connection.createStatement();
+        statement.execute(sql);
+    }
+}
diff --git a/src/Store/ConnectionHandler.java b/src/Store/ConnectionHandler.java
new file mode 100644
index 0000000..45d4446
--- /dev/null
+++ b/src/Store/ConnectionHandler.java
@@ -0,0 +1,28 @@
+package Store;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class ConnectionHandler {
+    String address;
+    public static Connection connection;
+
+    public ConnectionHandler(String address) {
+        this.address = address;
+    }
+
+    public void connect() {
+        try {
+            connection = DriverManager.getConnection(this.address);
+
+            // create tables if they don't exist
+            Book.createTable();
+            User.createTable();
+        } catch (SQLException e) {
+            System.err.println(e.getMessage());
+        }
+    }
+
+    // TODO: disconnect
+}
diff --git a/src/Store/User.java b/src/Store/User.java
new file mode 100644
index 0000000..e414520
--- /dev/null
+++ b/src/Store/User.java
@@ -0,0 +1,120 @@
+package Store;
+
+import Server.JSONMessage;
+import com.corundumstudio.socketio.listener.DataListener;
+
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Map;
+
+public class User {
+    private int id;
+    private final String userName;
+    private final String password;
+
+    public User(String userName, String password) {
+        this.userName = userName;
+        this.password = password;
+    }
+
+    public boolean save() throws SQLException {
+        if (!checkUniqueUsername(userName)) {
+            return false;
+        }
+
+        String sql = "INSERT INTO User (userName, password) VALUES (?, ?)";
+        PreparedStatement statement = ConnectionHandler.connection.prepareStatement(sql);
+
+        statement.setString(1, userName);
+        statement.setString(2, password);
+
+        statement.executeUpdate();
+
+        return true;
+    }
+
+    private boolean checkUniqueUsername(String userName) throws SQLException {
+        String sql = "SELECT * FROM User WHERE userName = '" + userName + "'";
+        Statement statement = ConnectionHandler.connection.createStatement();
+
+        ResultSet response = statement.executeQuery(sql);
+        while (response.next()) {
+            return false;
+        }
+
+        return true;
+    }
+
+    public boolean login() throws SQLException {
+        String sql = "SELECT * FROM User WHERE userName = '" + this.userName + "' AND password = '" + this.password + "'";
+        Statement statement = ConnectionHandler.connection.createStatement();
+
+        boolean loggedIn = false;
+        ResultSet response = statement.executeQuery(sql);
+        while (response.next()) {
+            this.id = response.getInt("ID");
+            loggedIn = true;
+        }
+
+        return loggedIn;
+    }
+
+    public static void createTable() throws SQLException {
+        String sql = "CREATE TABLE IF NOT EXISTS User (" +
+                "ID INTEGER NOT NULL PRIMARY KEY," +
+                "userName TEXT NOT NULL," +
+                "password text NOT NULL" +
+                ");";
+
+        Statement statement = ConnectionHandler.connection.createStatement();
+        statement.execute(sql);
+    }
+
+    public static DataListener<JSONMessage> signUpHandler() {
+        return ((client, data, ackSender) -> {
+            Map<String,String> d = data.getData();
+
+            User user = new User(d.get("userName"), d.get("password"));
+            try {
+                if (user.save()) {
+                    client.sendEvent("signedUp");
+                } else {
+                    client.sendEvent("usernameTaken");
+                    client.sendEvent("signUpFailed");
+                }
+            } catch (SQLException e) {
+                client.sendEvent("signUpFailed");
+                System.out.println(e.getMessage());
+            }
+        });
+    }
+
+    public static DataListener<JSONMessage> loginHandler() {
+        return ((client, data, ackSender) -> {
+            Map<String,String> d = data.getData();
+
+            User user = new User(d.get("userName"), d.get("password"));
+            try {
+                user.login();
+            } catch (SQLException e) {
+                System.out.println(e.getMessage());
+            }
+
+            if (user.login()) {
+                client.sendEvent("loggedIn", user.id);
+            } else {
+                client.sendEvent("loginFailed");
+            }
+        });
+    }
+
+    public String toJSON() {
+        return "{" +
+                "\"id\": "       + id       + "," +
+                "\"userName\": " + userName + "," +
+                "\"password\": " + password +
+                " }";
+    }
+}
+\ No newline at end of file
diff --git a/src/UI/Components/BookListItem.java b/src/UI/Components/BookListItem.java
new file mode 100644
index 0000000..1204f76
--- /dev/null
+++ b/src/UI/Components/BookListItem.java
@@ -0,0 +1,48 @@
+package UI.Components;
+
+import Store.Book;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.MatteBorder;
+import java.awt.*;
+import java.sql.SQLException;
+import java.util.Objects;
+
+public class BookListItem extends JPanel {
+    BookListItem(Book book) {
+        this.setBorder(BorderFactory.createCompoundBorder(new EmptyBorder(6, 10, 6, 10), new MatteBorder(0, 0, 1, 0, Color.BLACK)));
+
+        JLabel titleLabel = new JLabel(book.getTitle());
+        titleLabel.setFont(new Font(titleLabel.getFont().getName(), Font.BOLD, titleLabel.getFont().getSize() + 2));
+        this.add(titleLabel);
+
+        JPanel deleteButtonPanel = new JPanel();
+        JButton deleteButton = new JButton("Delete Book");
+        deleteButtonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+        deleteButtonPanel.add(deleteButton);
+        this.add(deleteButtonPanel);
+
+        deleteButton.addActionListener(e -> {
+            try {
+                book.delete();
+            } catch (SQLException ex) {
+                throw new RuntimeException(ex);
+            }
+        });
+
+        JLabel authorLabel = new JLabel(book.getAuthor());
+        authorLabel.setForeground(Color.DARK_GRAY);
+        this.add(authorLabel);
+
+        JPanel issuedByLabelPanel = new JPanel();
+        JLabel issuedByLabel = new JLabel(!Objects.equals(book.getIssuedByName(), null) ? "Issued by user " + book.getIssuedByName() : "Available");
+        issuedByLabelPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+        issuedByLabelPanel.add(issuedByLabel);
+        this.add(issuedByLabelPanel);
+
+        this.setMaximumSize(new Dimension(650, 100));
+        this.setLayout(new GridLayout(2, 2));
+    }
+}
+
diff --git a/src/UI/Components/BooksList.java b/src/UI/Components/BooksList.java
new file mode 100644
index 0000000..dfb21bf
--- /dev/null
+++ b/src/UI/Components/BooksList.java
@@ -0,0 +1,47 @@
+package UI.Components;
+
+import Store.Book;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.sql.SQLException;
+import java.util.ArrayList;
+
+public class BooksList extends JPanel {
+    private static JPanel listPanel;
+
+    public BooksList() throws SQLException {
+        listPanel = new JPanel();
+        listPanel.setLayout(new BoxLayout(listPanel, BoxLayout.Y_AXIS));
+
+        refreshBooks();
+
+        JScrollPane scrollPane = new JScrollPane(listPanel);
+        scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
+
+        this.add(scrollPane);
+
+        this.setBorder(new EmptyBorder(4, 8, 8, 8));
+        this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
+    }
+
+    public static void refreshBooks(ArrayList<Book> books) throws SQLException {
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                listPanel.removeAll();
+
+                for (Book book : books) {
+                    listPanel.add(new BookListItem(book));
+                }
+
+                listPanel.revalidate();
+                listPanel.repaint();
+            }
+        }).start();
+    }
+
+    public static void refreshBooks() throws SQLException {
+        refreshBooks(Book.getAll(false));
+    }
+}
diff --git a/src/UI/Components/InputBox.java b/src/UI/Components/InputBox.java
new file mode 100644
index 0000000..c15381e
--- /dev/null
+++ b/src/UI/Components/InputBox.java
@@ -0,0 +1,39 @@
+package UI.Components;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class InputBox extends JPanel {
+    JLabel label;
+    JTextField textField;
+
+    public InputBox(String label) {
+        this.label = new JLabel(label);
+        this.label.setPreferredSize(new Dimension(70, 30));
+        this.add(this.label);
+
+        this.add(Box.createHorizontalGlue());
+
+        this.textField = new JTextField(20);
+        this.add(this.textField);
+
+        this.setLayout(new FlowLayout(FlowLayout.CENTER));
+    }
+
+    public String getLabel() {
+        return this.label.getText();
+    }
+
+    public String getValue() {
+        return this.textField.getText();
+    }
+
+    public void setLabel(String label) {
+        this.label.setText(label);
+    }
+
+    public void setValue(String value) {
+        this.textField.setText(value);
+        this.textField.repaint();
+    }
+}
diff --git a/src/UI/Components/MenuBar.java b/src/UI/Components/MenuBar.java
new file mode 100644
index 0000000..454bb83
--- /dev/null
+++ b/src/UI/Components/MenuBar.java
@@ -0,0 +1,29 @@
+package UI.Components;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+
+public class MenuBar extends JPanel {
+    public JButton settingsButton;
+    public JButton startStopButton;
+    public JButton addBookButton;
+
+    public MenuBar() {
+        settingsButton = new JButton("Settings");
+        this.add(settingsButton);
+
+        this.add(Box.createRigidArea(new Dimension(15, 0)));
+
+        startStopButton = new JButton("Start Server");
+        this.add(startStopButton);
+
+        this.add(Box.createHorizontalGlue());
+
+        addBookButton = new JButton("Add Book");
+        this.add(addBookButton);
+
+        this.setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
+        this.setBorder(new EmptyBorder(8, 8, 4, 8));
+    }
+}
diff --git a/src/UI/MainWindow.java b/src/UI/MainWindow.java
new file mode 100644
index 0000000..6c1ef83
--- /dev/null
+++ b/src/UI/MainWindow.java
@@ -0,0 +1,121 @@
+package UI;
+
+import Server.SocketServer;
+import Store.Book;
+import UI.Components.BooksList;
+import UI.Components.MenuBar;
+import com.corundumstudio.socketio.Configuration;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.sql.SQLException;
+
+public class MainWindow extends JFrame {
+    private static String hostname = "localhost";
+    private static int port = 8080;
+    private static SocketServer server;
+    public static boolean serverStarted = false;
+    private MenuBar menuBar;
+
+    private static NewBookPopupWindow newBookPopup;
+    private static SettingsPopupWindow settingsPopup;
+
+    public MainWindow() {
+        this.setTitle("Admin Panel - Library Management System");
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        this.setSize(650, 500);
+        this.setResizable(false);
+        this.setLocationRelativeTo(null);
+
+        menuBar = new MenuBar();
+        menuBar.settingsButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (settingsPopup == null) {
+                    settingsPopup = new SettingsPopupWindow();
+                    settingsPopup.saveButton.addActionListener(new ActionListener() {
+                        @Override
+                        public void actionPerformed(ActionEvent e) {
+                            hostname = settingsPopup.hostnameInput.getValue();
+                            port = Integer.parseInt(settingsPopup.portInput.getValue());
+
+                            settingsPopup.setVisible(false);
+                        }
+                    });
+                }
+
+                settingsPopup.hostnameInput.setValue(hostname);
+                settingsPopup.portInput.setValue(String.valueOf(port));
+
+                settingsPopup.setVisible(true);
+            }
+        });
+        menuBar.startStopButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (serverStarted) {
+                    new Thread(new Runnable() {
+                        @Override
+                        public void run() {
+                            stopServer();
+                        }
+                    }).start();
+                } else {
+                    new Thread(new Runnable() {
+                        @Override
+                        public void run() {
+                            startServer();
+                        }
+                    }).start();
+                }
+            }
+        });
+        menuBar.addBookButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (newBookPopup == null) {
+                    newBookPopup = new NewBookPopupWindow();
+                }
+
+                newBookPopup.showWindow();
+            }
+        });
+        this.add(menuBar);
+
+        this.add(Box.createRigidArea(new Dimension(0, 5)));
+
+        BooksList booksList = null;
+        try {
+            booksList = new BooksList();
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+        this.add(booksList);
+
+        this.setLayout(new BoxLayout(this.getContentPane(), BoxLayout.Y_AXIS));
+    }
+
+    private void setupServer() {
+        Configuration config = new Configuration();
+        config.setHostname(hostname);
+        config.setPort(port);
+        server = new SocketServer(config);
+    }
+
+    private void startServer() {
+        setupServer();
+        server.start();
+        serverStarted = true;
+        menuBar.settingsButton.setEnabled(false);
+        menuBar.startStopButton.setText("Stop Server");
+    }
+
+    private void stopServer() {
+        server.stop();
+        serverStarted = false;
+        menuBar.settingsButton.setEnabled(true);
+        menuBar.startStopButton.setText("Start Server");
+    }
+}
diff --git a/src/UI/NewBookPopupWindow.java b/src/UI/NewBookPopupWindow.java
new file mode 100644
index 0000000..f50f3e6
--- /dev/null
+++ b/src/UI/NewBookPopupWindow.java
@@ -0,0 +1,58 @@
+package UI;
+
+import Store.Book;
+import UI.Components.InputBox;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.sql.SQLException;
+
+public class NewBookPopupWindow extends JFrame {
+    public InputBox titleInput;
+    public InputBox authorInput;
+    public JButton saveButton;
+
+    public NewBookPopupWindow() {
+        this.setTitle("Add New Book");
+        this.setSize(350, 200);
+        this.setLocationRelativeTo(null);
+        this.setLayout(new FlowLayout(FlowLayout.TRAILING));
+
+        this.titleInput = new InputBox("Title:");
+        this.titleInput.setBorder(new EmptyBorder(0, 10, 0, 10));
+        this.add(this.titleInput);
+
+        this.authorInput = new InputBox("Author:");
+        this.authorInput.setBorder(new EmptyBorder(0, 10, 0, 10));
+        this.add(this.authorInput);
+
+        saveButton = new JButton("Save");
+        JPanel buttonPanel = new JPanel();
+        buttonPanel.setBorder(new EmptyBorder(0, 0, 0, 12));
+        buttonPanel.add(saveButton);
+        this.add(buttonPanel);
+
+        saveButton.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                Book newBook = new Book(titleInput.getValue(), authorInput.getValue());
+                try {
+                    setVisible(false);
+                    newBook.save();
+                } catch (SQLException ex) {
+                    throw new RuntimeException(ex);
+                }
+            }
+        });
+    }
+
+    public void showWindow() {
+        this.setVisible(true);
+        this.titleInput.setValue("");
+        this.authorInput.setValue("");
+        this.repaint();
+    }
+}
diff --git a/src/UI/SettingsPopupWindow.java b/src/UI/SettingsPopupWindow.java
new file mode 100644
index 0000000..6c962f0
--- /dev/null
+++ b/src/UI/SettingsPopupWindow.java
@@ -0,0 +1,36 @@
+package UI;
+
+import UI.Components.InputBox;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+
+public class SettingsPopupWindow extends JFrame {
+    public InputBox hostnameInput;
+    public InputBox portInput;
+    public JButton saveButton;
+
+    public SettingsPopupWindow() {
+        this.setTitle("Settings - Library Management System");
+        this.setSize(350, 200);
+        this.setResizable(false);
+        this.setLocationRelativeTo(null);
+
+        this.hostnameInput = new InputBox("Hostname:");
+        this.hostnameInput.setBorder(new EmptyBorder(0, 10, 0, 10));
+        this.add(this.hostnameInput);
+
+        this.portInput = new InputBox("PORT:");
+        this.portInput.setBorder(new EmptyBorder(0, 10, 0, 10));
+        this.add(this.portInput);
+
+        saveButton = new JButton("Save");
+        JPanel buttonPanel = new JPanel();
+        buttonPanel.setBorder(new EmptyBorder(0, 0, 0, 12));
+        buttonPanel.add(saveButton);
+        this.add(buttonPanel);
+
+        this.setLayout(new FlowLayout(FlowLayout.TRAILING));
+    }
+}