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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) -> {
Thread t = new Thread(() -> {
ArrayList<Book> books = null;
try {
books = getAll(availableOnly);
} catch (SQLException e) {
throw new RuntimeException(e);
}
client.sendEvent(availableOnly ? "availableBooksList" : "allBooksList", books);
});
t.start();
t.join();
});
}
public static DataListener<JSONMessage> issueHandler() {
return ((client, data, ackSender) -> {
Thread t = new Thread(() -> {
Map d = data.getData();
int userId = (int) d.get("id");
Book b = new Book((int) d.get("bookId"));
try {
if (b.issue(userId)) {
client.sendEvent("issued");
} else {
client.sendEvent("alreadyIssued");
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
});
t.start();
t.join();
});
}
public static DataListener<JSONMessage> returnHandler() {
return ((client, data, ackSender) -> {
Thread t = new Thread(() -> {
Map d = data.getData();
int userId = (int) d.get("id");
Book b = new Book((int) d.get("bookId"));
try {
if (b.returnBook(userId)) {
client.sendEvent("returned");
} else {
client.sendEvent("returnFailed");
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
});
t.start();
t.join();
});
}
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);
}
}
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