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The project is over #18

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155 changes: 155 additions & 0 deletions Answers/40230112090/Admin.java
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Original file line number Diff line number Diff line change
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package org.example;

import java.sql.*;
import java.util.Random;

public class Admin extends NormalUsers {

public static final String URL = "jdbc:mysql://localhost/Library";
public static final String USER = "javalibrary";
public static final String PASS = "1384";
public static final String INSERT_QUERY = "INSERT INTO admins (id, adminName, adminPassword, phoneNumber) VALUES (?, ?, ?, ?)";
public static final String INSERT_QUERY2 = "INSERT INTO books (id, title, writer, description) VALUES (?, ?, ?, ?)";
private final String admin_id;
Book book1 = new Book();

public Admin() {
this.admin_id = String.valueOf(new Random().nextInt(20000) + 10000);


}

public void addAdmin(String adminName, String password, String phoneNumber) {
try (Connection connection = DriverManager.getConnection(URL, USER, PASS)) {
PreparedStatement statement = connection.prepareStatement(INSERT_QUERY);
ResultSet resultSet = statement.executeQuery("SELECT * FROM admins");
if (resultSet.next()) {
String admin_name = resultSet.getString("adminName");
String admin_password = resultSet.getString("adminPassword");
String admin_phoneNumber = resultSet.getString("phoneNumber");
if (adminName.equals(admin_name) && password.equals(admin_password) && phoneNumber.equals(admin_phoneNumber)) {
System.out.print("Another person is registered with the profile");

} else {
statement.setString(1, this.admin_id);
statement.setString(2, adminName);
statement.setString(3, password);
statement.setString(4, super.phoneNumber);
System.out.print("Dear admin,your profile has been registered");
}
}
} catch (SQLException e) {
throw new RuntimeException(e);
}

}

public void removeAdmin(String adminName, String password) {
try (Connection connection = DriverManager.getConnection(URL, USER, PASS)) {
PreparedStatement statement = connection.prepareStatement(INSERT_QUERY);
Statement statement1 = connection.createStatement();
ResultSet resultSet = statement.executeQuery("SELECT * FROM admins");
if (resultSet.next()) {
String admin_name = resultSet.getString("adminName");
String admin_password = resultSet.getString("adminPassword");
if (adminName.equals(admin_name) && password.equals(admin_password)) {
statement1.executeUpdate("DELETE FROM admins WHERE adminPassword = " + password);
} else {
System.out.println("Admin with this profile was not found");
}
}


} catch (SQLException e) {
throw new RuntimeException(e);
}
}

public void addUser(String username, String phoneNumber, String password, int number, int capacity) {
if (number < capacity) {
try (Connection connection = DriverManager.getConnection(URL, USER, PASS);
PreparedStatement statement = connection.prepareStatement("INSERT INTO normal_users (id, username, phoneNumber, password, localDate) VALUES (?, ?, ?, ?, ?)")) {
statement.setString(1, super.id);
statement.setString(2, username);
statement.setString(3, phoneNumber);
statement.setString(4, password);
statement.setString(5, this.localDate.toString());
statement.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
} else {
System.out.println();
}
}

public void removeUser(String userName, String userPassword) {
try (Connection connection = DriverManager.getConnection(URL, USER, PASS);
PreparedStatement statement = connection.prepareStatement("INSERT INTO normal_users (id, username, phoneNumber, password, localDate) VALUES (?, ?, ?, ?, ?)")) {
Statement statement1 = connection.createStatement();
ResultSet resultSet = statement.executeQuery("SELECT * FROM normal_users");
if (resultSet.next()) {
String user_name = resultSet.getString("username");
String user_password = resultSet.getString("password");
if (userName.equals(user_name) && userPassword.equals("user_password")) {
statement1.executeUpdate("DELETE FROM normal_users WHERE adminPassword = " + userPassword);
} else {
System.out.println("User with this profile was not found");
}
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}

public void addBook(String title, String writer, String description) {
try (Connection connection = DriverManager.getConnection(URL, USER, PASS);
PreparedStatement statement = connection.prepareStatement(INSERT_QUERY2)) {
ResultSet resultSet = statement.executeQuery("SELECT * FROM books");
if (resultSet.next()) {
String bookName = resultSet.getString("title");
String bookWriter = resultSet.getString("writer");
if (title.equals(bookName) && writer.equals(bookWriter)) {
System.out.println("Whit this specification, a book has already been registered");
}
} else {
statement.setString(1, book1.id);
statement.setString(2, title);
statement.setString(3, writer);
statement.setString(4, description);
statement.executeUpdate();
}

statement.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}

public void removeBook(String bookName, String bookWriter) {
try (Connection connection = DriverManager.getConnection(URL, USER, PASS);
PreparedStatement statement = connection.prepareStatement(INSERT_QUERY2);
PreparedStatement statement1 = connection.prepareStatement("DELETE FROM normal_users WHERE title = ? AND writer = ?");
ResultSet resultSet = statement.executeQuery("SELECT title , writer from books");) {
String name_book = resultSet.getString("title");
String writer_book = resultSet.getString("writer");
if (bookName.equals(name_book) && bookWriter.equals(writer_book)) {
}
statement1.setString(1, bookName);
statement1.setString(2, bookWriter);
statement1.executeUpdate();

} catch (SQLException e) {
throw new RuntimeException(e);
}
}


}







82 changes: 82 additions & 0 deletions Answers/40230112090/Book.java
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package org.example;

import java.sql.*;
import java.util.*;

public class Book {

private static final String URL = "jdbc:mysql://localhost/Library";
private static final String USER = "javalibrary";
private static final String PASS = "1384";
private static final String INSERT_QUERY = "INSERT INTO books (id, title, writer, description) VALUES (?, ?, ?, ?)";
private static final String SELECT_RENT_QUERY = "SELECT rents.rent, rents.title FROM rents JOIN books ON books.id = rents.id_of_title ;";


public String title;
public String id;

public Book() {
this.id = String.valueOf(new Random().nextInt(20000) + 10000);
}


public String title(String input) {
Scanner scanner = new Scanner(System.in);
input = input.trim();
while (input.isEmpty()) {
System.out.print("Please enter your first name and last name : ");
input = scanner.nextLine().trim();
}
String[] words = input.split(" ");
StringBuilder formatted = new StringBuilder();
for (String word : words) {
formatted.append(Character.toUpperCase(word.charAt(0)))
.append(word.substring(1).toLowerCase())
.append(" ");
}
return formatted.toString().trim();
}


public void viewAvailableBooks() {
// View available books for rental
try {
Connection connection = DriverManager.getConnection(URL, USER, PASS);
PreparedStatement statement = connection.prepareStatement(INSERT_QUERY);
ResultSet resultSet = statement.executeQuery("SELECT books.id , books.title , books.writer , rents.rent FROM books LEFT JOIN rents ON rents.id_of_title = books.id;");
int n = 1;

while (resultSet.next()) {
// System.out.println(resultSet.getString("rent"));
if ("null".equals(String.valueOf(resultSet.getString("rents.rent")))) {
System.out.println(resultSet.getString("id") + "-" + resultSet.getString("title") + " from " + resultSet.getString("writer"));
n++;
}
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}

public void viewRentBooks() {

try {
Connection connection = DriverManager.getConnection(URL, USER, PASS);
PreparedStatement statement = connection.prepareStatement(INSERT_QUERY);
ResultSet resultSet = statement.executeQuery(SELECT_RENT_QUERY);
int n = 1;
while (resultSet.next()) {
if ("rent".equals(String.valueOf(resultSet.getString("rent")))) {
System.out.println(n + "-" + resultSet.getString("title"));
}
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}


public void setTitle(String title) {
this.title = title;
}
}
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