From 5ecf2f94e435d14648df52cfe2ae59a992b10712 Mon Sep 17 00:00:00 2001
From: Navid-Naserazad <126415333+Navid-Naserazad@users.noreply.github.com>
Date: Wed, 8 Mar 2023 11:03:31 +0330
Subject: [PATCH 1/6] first commit

---
 src/main/java/Book.java      |  65 +++++++++++
 src/main/java/Librarian.java |  50 ++++++++-
 src/main/java/Library.java   | 202 ++++++++++++++++++++++++++++++-----
 src/main/java/Main.java      |   9 +-
 src/main/java/User.java      |  84 ++++++++++++++-
 5 files changed, 375 insertions(+), 35 deletions(-)

diff --git a/src/main/java/Book.java b/src/main/java/Book.java
index 7cff6f8..17ee3ca 100644
--- a/src/main/java/Book.java
+++ b/src/main/java/Book.java
@@ -1,3 +1,68 @@
 public class Book {
     //Book should contain name,author,year of publish and ISBN
+    private String name;
+    private String author;
+    private int yearOfPublish;
+    private String ISBN;
+    private Boolean isAvailable = true;
+    public Book(String name, String author, int yearOfPublish, String ISBN)
+    {
+        this.name = name;
+        this.author = author;
+        this.yearOfPublish = yearOfPublish;
+        this.ISBN = ISBN;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public int getYearOfPublish() {
+        return yearOfPublish;
+    }
+
+    public void setYearOfPublish(int yearOfPublish) {
+        this.yearOfPublish = yearOfPublish;
+    }
+
+    public String getISBN() {
+        return ISBN;
+    }
+
+    public void setISBN(String ISBN) {
+        this.ISBN = ISBN;
+    }
+
+    public Boolean getAvailable() {
+        return isAvailable;
+    }
+
+    public void setAvailable(Boolean available) {
+        isAvailable = available;
+    }
+
+    public String toString()
+    {
+        return "Name : " + name + "" +
+                "Author : " + author + "" +
+                "Year of publish : " +  yearOfPublish + "" +
+                "ISBN : " + ISBN + "" +
+                "Is available ? " + isAvailable;
+    }
+
+    public void changeAvailableStatus(){
+        this.isAvailable = !isAvailable;
+    }
 }
diff --git a/src/main/java/Librarian.java b/src/main/java/Librarian.java
index 321ce3a..5987f02 100644
--- a/src/main/java/Librarian.java
+++ b/src/main/java/Librarian.java
@@ -1,10 +1,58 @@
-public class Librarian {
+import java.util.Scanner;
+
+public class Librarian
+{
     /*
     * The librarian should have a username and a password
     * The librarian should be able to search users, librarians and books
     * The librarian should be able to add\remove\update user add\remove\update_
     _ librarian and add\remove\update book
      */
+    Scanner input = new Scanner(System.in);
+
+    private String username;
+    private String password;
+    public Librarian(String username, String password)
+    {
+        this.username = username;
+        this.password = password;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
 
+    public void changePassword(){
+        System.out.println("Enter your currenct password :");
+        String currentPassword = input.nextLine();
+        if (currentPassword.equals(getPassword()))
+        {
+            System.out.println("Enter your new password :");
+            String newPassword = input.nextLine();
+            this.password = newPassword;
+        }
+        else
+        {
+            System.out.println("Wrong password!");
+            changePassword();
+        }
+    }
 
+    public String toString()
+    {
+        return "Librarian's username : " + username + "" +
+                "Librarian's password : " + password;
+    }
 }
diff --git a/src/main/java/Library.java b/src/main/java/Library.java
index 6c34354..1316b61 100644
--- a/src/main/java/Library.java
+++ b/src/main/java/Library.java
@@ -1,3 +1,5 @@
+import java.util.ArrayList;
+import java.util.Scanner;
 public class Library {
     /*
     * The library should have a list of books.
@@ -7,25 +9,84 @@ public class Library {
      */
 
     //book related functions
-
-    public void addBook(){
-        //TODO
-    }
-
-    public void removeBook(){
-        //TODO
-    }
-
-    public void searchBook(){
-        //TODO
-    }
-
-    public void updateBook(){
-        //TODO
-    }
-
-    public void doesBookExist(){
-        //TODO
+    ArrayList<Book> books = new ArrayList<>();
+    ArrayList<User> users = new ArrayList<>();
+    ArrayList<Librarian> librarians = new ArrayList<>();
+
+    Scanner input = new Scanner(System.in);
+
+    public void addBook(Book ketab){
+        if (!doesBookExist(ketab))
+        {
+            books.add(ketab);
+        }
+        else
+        {
+            System.out.println("We have already had this book!");
+        }
+    }
+
+    public void removeBook(Book ketab){
+        if (doesBookExist(ketab))
+        {
+            for (int i=0; i<books.size(); i++)
+            {
+                if (ketab.getISBN().equals(books.get(i).getISBN()))
+                {
+                    books.remove(i);
+                    break;
+                }
+            }
+        }
+        else
+        {
+            System.out.println("This book does not exist!");
+        }
+    }
+
+    public void searchBook(Book ketab){
+        //TODO
+        if (doesBookExist(ketab))
+        {
+            System.out.println(ketab);
+        }
+        else
+        {
+            System.out.println("This book does not exist!");
+        }
+    }
+
+    public void updateBook(Book ketab){
+        //TODO
+        if (doesBookExist(ketab))
+        {
+            for (int i=0; i<books.size(); i++)
+            {
+                if (ketab.getISBN().equals(books.get(i).getISBN()))
+                {
+                    books.get(i).changeAvailableStatus();
+                    break;
+                }
+            }
+        }
+        else
+        {
+            System.out.println("This book does not exist!");
+        }
+    }
+
+    public Boolean doesBookExist(Book ketab){
+        //TODO
+        Boolean existence = false;
+        for (int i=0; i<books.size(); i++)
+        {
+            if (ketab.getISBN().equals(books.get(i).getISBN()))
+            {
+                existence = true;
+                break;
+            }
+        }
+        return existence;
     }
 
     public void increaseBook(){
@@ -38,46 +99,129 @@ public void decreaseBook(){
 
     //user related functions
 
-    public void addUser(){
+    public void addUser(User karbar){
         //TODO
+        if (!doesUserExist(karbar))
+        {
+            users.add(karbar);
+        }
     }
 
-    public void removeUser(){
+    public void removeUser(User karbar){
         //TODO
+        if (doesUserExist(karbar))
+        {
+            for (int i=0; i<users.size(); i++)
+            {
+                if (karbar.getUsername().equals(users.get(i).getUsername()))
+                {
+                    users.remove(i);
+                    break;
+                }
+            }
+        }
     }
 
-    public void searchUser(){
+    public void searchUser(User karbar){
         //TODO
+        if (doesUserExist(karbar))
+        {
+            System.out.println(karbar);
+        }
+        else
+        {
+            System.out.println("This user does not exist!");
+        }
     }
 
-    public void updateUser(){
+    public void updateUser(User karbar){
         //TODO
+        if (doesUserExist(karbar))
+        {
+            karbar.changePassword();
+        }
+        else
+        {
+            System.out.println("This user does not exist!");
+        }
     }
 
-    public void doesUserExist(){
+    public Boolean doesUserExist(User karbar){
         //TODO
+        Boolean existence = false;
+        for (int i=0; i<users.size(); i++)
+        {
+            if (karbar.getUsername().equals(users.get(i).getUsername()))
+            {
+                existence = true;
+                break;
+            }
+        }
+        return existence;
     }
 
     //librarian related functions
 
-    public void addLibrarian(){
+    public void addLibrarian(Librarian ketabdar){
         //TODO
+        if (!doesLibrarianExist(ketabdar))
+        {
+            librarians.add(ketabdar);
+        }
+
     }
 
-    public void removeLibrarian(){
+    public void removeLibrarian(Librarian ketabdar){
         //TODO
+        if (doesLibrarianExist(ketabdar))
+        {
+            for (int i=0; i<librarians.size(); i++)
+            {
+                if (ketabdar.getUsername().equals(librarians.get(i).getUsername()))
+                {
+                    librarians.remove(i);
+                    break;
+                }
+            }
+        }
     }
 
-    public void searchLibrarian(){
+    public void searchLibrarian(Librarian ketabdar){
         //TODO
+        if (doesLibrarianExist(ketabdar))
+        {
+            System.out.println(ketabdar);
+        }
+        else
+        {
+            System.out.println("This librarian does not exist!");
+        }
     }
 
-    public void updateLibrarian(){
+    public void updateLibrarian(Librarian ketabdar){
         //TODO
+        if (doesLibrarianExist(ketabdar))
+        {
+            ketabdar.changePassword();
+        }
+        else
+        {
+            System.out.println("This librarian does not exist!");
+        }
     }
 
-    public void doesLibrarianExist(){
+    public Boolean doesLibrarianExist(Librarian ketabdar){
         //TODO
+        Boolean existence = false;
+        for (int i=0; i<librarians.size(); i++)
+        {
+            if (ketabdar.getUsername().equals(librarians.get(i).getUsername()))
+            {
+                existence = true;
+                break;
+            }
+        }
+        return existence;
     }
 
 
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 9a347d3..644e93a 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,6 +1,7 @@
 import java.util.Scanner;
 
-public class Main {
+public class Main
+{
     /*
     * make a functional library app using oop
     * run the main program in Main.java and code the oop part in other classes
@@ -8,11 +9,13 @@ public class Main {
     * *  *** don't limit yourself to our template ***
      */
 
-    public static void main(String[] args) {
+    public static void main(String[] args)
+    {
 
     }
 
-    public static void runMenu(){
+    public static void runMenu()
+    {
         //TODO:
     }
 }
diff --git a/src/main/java/User.java b/src/main/java/User.java
index dbe4020..e28238f 100644
--- a/src/main/java/User.java
+++ b/src/main/java/User.java
@@ -1,12 +1,92 @@
+import java.awt.*;
+import java.util.Scanner;
+import java.util.ArrayList;
+
 public class User {
     //User should have a list of books
     //User should have a username and a password
 
-    public void rentBook(){
+    Scanner input = new Scanner(System.in);
+
+    private String username;
+    private String password;
+
+    public User(String username, String password)
+    {
+        this.username = username;
+        this.password = password;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public void changePassword(){
+        System.out.println("Enter your currenct password :");
+        String currentPassword = input.nextLine();
+        if (currentPassword.equals(getPassword()))
+        {
+            System.out.println("Enter your new password :");
+            String newPassword = input.nextLine();
+            this.password = newPassword;
+        }
+        else
+        {
+            System.out.println("Wrong password!");
+            changePassword();
+        }
+    }
+
+    ArrayList<Book> rentBooks = new ArrayList<>();
+
+    public void rentBook(Library ketabkhune , Book ketab){
         //TODO
+        if (ketabkhune.doesBookExist(ketab))
+        {
+            if (ketab.getAvailable())
+            {
+                rentBooks.add(ketab);
+                ketabkhune.updateBook(ketab);
+            }
+            else
+            {
+                System.out.println("This book is not available!");
+            }
+        }
+        else
+        {
+            System.out.println("This book does not exist!");
+        }
     }
 
-    public void returnBook(){
+    public void returnBook(Library ketabkhune , Book ketab){
         //TODO
+        for (int i=0; i<rentBooks.size(); i++)
+        {
+            if (ketab.getISBN().equals(rentBooks.get(i).getISBN()))
+            {
+                rentBooks.remove(i);
+                break;
+            }
+        }
+        ketabkhune.updateBook(ketab);
+    }
+
+    public String toString()
+    {
+        return "User's username : " + username + "" +
+            "User's password : " + password;
     }
 }

From 61f116dcac5cbc890e8ec2c56c4d25534ef43e4b Mon Sep 17 00:00:00 2001
From: Navid-Naserazad <126415333+Navid-Naserazad@users.noreply.github.com>
Date: Wed, 8 Mar 2023 17:39:50 +0330
Subject: [PATCH 2/6] second commit

---
 src/main/java/Book.java      |   4 +-
 src/main/java/Librarian.java |   9 +-
 src/main/java/Library.java   |  73 ++++++--
 src/main/java/Main.java      | 325 ++++++++++++++++++++++++++++++++++-
 src/main/java/User.java      |  17 +-
 5 files changed, 409 insertions(+), 19 deletions(-)

diff --git a/src/main/java/Book.java b/src/main/java/Book.java
index 17ee3ca..c00e7df 100644
--- a/src/main/java/Book.java
+++ b/src/main/java/Book.java
@@ -5,13 +5,13 @@ public class Book {
     private int yearOfPublish;
     private String ISBN;
     private Boolean isAvailable = true;
-    public Book(String name, String author, int yearOfPublish, String ISBN)
+    /* public Book(String name, String author, int yearOfPublish, String ISBN)
     {
         this.name = name;
         this.author = author;
         this.yearOfPublish = yearOfPublish;
         this.ISBN = ISBN;
-    }
+    }*/
 
     public String getName() {
         return name;
diff --git a/src/main/java/Librarian.java b/src/main/java/Librarian.java
index 5987f02..42791f8 100644
--- a/src/main/java/Librarian.java
+++ b/src/main/java/Librarian.java
@@ -5,18 +5,18 @@ public class Librarian
     /*
     * The librarian should have a username and a password
     * The librarian should be able to search users, librarians and books
-    * The librarian should be able to add\remove\update user add\remove\update_
-    _ librarian and add\remove\update book
+    * The librarian should be able to add\remove\ update user add\remove\ update_
+    _ librarian and add\remove\ update book
      */
     Scanner input = new Scanner(System.in);
 
     private String username;
     private String password;
-    public Librarian(String username, String password)
+    /* public Librarian(String username, String password)
     {
         this.username = username;
         this.password = password;
-    }
+    }*/
 
     public String getUsername() {
         return username;
@@ -50,6 +50,7 @@ public void changePassword(){
         }
     }
 
+
     public String toString()
     {
         return "Librarian's username : " + username + "" +
diff --git a/src/main/java/Library.java b/src/main/java/Library.java
index 1316b61..2875c7e 100644
--- a/src/main/java/Library.java
+++ b/src/main/java/Library.java
@@ -1,5 +1,7 @@
 import java.util.ArrayList;
 import java.util.Scanner;
+import java.util.HashMap;
+
 public class Library {
     /*
     * The library should have a list of books.
@@ -15,10 +17,13 @@ public class Library {
 
     Scanner input = new Scanner(System.in);
 
+    HashMap<String , Integer> numberOfBooks = new HashMap<String , Integer>();
+
     public void addBook(Book ketab){
         if (!doesBookExist(ketab))
         {
             books.add(ketab);
+            increaseBook(ketab);
         }
         else
         {
@@ -34,6 +39,7 @@ public void removeBook(Book ketab){
                 if (ketab.getISBN().equals(books.get(i).getISBN()))
                 {
                     books.remove(i);
+                    decreaseBook(ketab);
                     break;
                 }
             }
@@ -44,16 +50,16 @@ public void removeBook(Book ketab){
         }
     }
 
-    public void searchBook(Book ketab){
+    public String searchBook(Book ketab){
         //TODO
-        if (doesBookExist(ketab))
-        {
-            System.out.println(ketab);
-        }
-        else
+        for (int i=0; i<books.size(); i++)
         {
-            System.out.println("This book does not exist!");
+            if (ketab.getName().equals(books.get(i).getName()) && ketab.getAuthor().equals(books.get(i).getAuthor()) && ketab.getAvailable()==true)
+            {
+                return ketab.getISBN();
+            }
         }
+        return "";
     }
 
     public void updateBook(Book ketab){
@@ -89,12 +95,16 @@ public Boolean doesBookExist(Book ketab){
         return existence;
     }
 
-    public void increaseBook(){
+    public void increaseBook(Book ketab){
         //TODO
+        int number = numberOfBooks.get(ketab.getName()) + 1;
+        numberOfBooks.put(ketab.getName(), number);
     }
 
-    public void decreaseBook(){
+    public void decreaseBook(Book ketab){
         //TODO
+        int number = numberOfBooks.get(ketab.getName()) - 1;
+        numberOfBooks.put(ketab.getName(), number);
     }
 
     //user related functions
@@ -136,6 +146,7 @@ public void searchUser(User karbar){
 
     public void updateUser(User karbar){
         //TODO
+        Scanner input = new Scanner(System.in);
         if (doesUserExist(karbar))
         {
             karbar.changePassword();
@@ -160,6 +171,28 @@ public Boolean doesUserExist(User karbar){
         return existence;
     }
 
+    public Boolean userPasswordCheck(User karbar)
+    {
+        Boolean passCheck = false;
+        for (int i=0; i<users.size(); i++)
+        {
+            if (karbar.getUsername().equals(users.get(i).getUsername()))
+            {
+                if (karbar.getPassword().equals(users.get(i).getPassword()))
+                {
+                    passCheck = true;
+                    break;
+                }
+                else
+                {
+                    passCheck = false;
+                    break;
+                }
+            }
+        }
+        return passCheck;
+    }
+
     //librarian related functions
 
     public void addLibrarian(Librarian ketabdar){
@@ -223,6 +256,26 @@ public Boolean doesLibrarianExist(Librarian ketabdar){
         }
         return existence;
     }
-
+    public Boolean librarianPasswordCheck(Librarian ketabdar)
+    {
+        Boolean passCheck = false;
+        for (int i=0; i<librarians.size(); i++)
+        {
+            if (ketabdar.getUsername().equals(librarians.get(i).getUsername()))
+            {
+                if (ketabdar.getPassword().equals(librarians.get(i).getPassword()))
+                {
+                    passCheck = true;
+                    break;
+                }
+                else
+                {
+                    passCheck = false;
+                    break;
+                }
+            }
+        }
+        return passCheck;
+    }
 
 }
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 644e93a..83d3184 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -11,11 +11,334 @@ public class Main
 
     public static void main(String[] args)
     {
-
+        runMenu();
     }
 
     public static void runMenu()
     {
         //TODO:
+
+        Book ketab = new Book();
+        Library ketabkhune = new Library();
+        User karbar = new User();
+        Librarian ketabdar = new Librarian();
+        Scanner in = new Scanner(System.in);
+
+        System.out.println("Welcome to the library!");
+        System.out.println("1.Users");
+        System.out.println("2.Librarians");
+        System.out.println("Enter your command");
+        System.out.println("command : ");
+        int command = in.nextInt();
+        if (command == 1)
+        {
+            System.out.println("1.Sign Up");
+            System.out.println("2.Sign In");
+            System.out.println("Enter your command");
+            System.out.println("command : ");
+            command = in.nextInt();
+            if (command == 1)
+            {
+                signUpUser(ketabkhune , ketabdar , karbar , ketab);
+            }
+            else
+            {
+                signInUser(ketabkhune , ketabdar , karbar , ketab);
+            }
+            System.out.println("1.Borrow book");
+            System.out.println("2.Return book");
+            System.out.println("3.Update User");
+            System.out.println("4.Log out");
+            System.out.println("Enter your command");
+            System.out.println("command : ");
+            command = in.nextInt();
+            if (command == 1)
+            {
+                borrowBook(ketabkhune, karbar, ketab);
+            }
+            else if (command == 2)
+            {
+                returnBook(ketabkhune, karbar, ketab);
+            }
+            else  if (command == 3)
+            {
+                ketabkhune.updateUser(karbar);
+            }
+            else if (command == 4)
+            {
+                logOut();
+            }
+        }
+        else
+        {
+            System.out.println("1.Sign Up");
+            System.out.println("2.Sign In");
+            System.out.println("Enter your command");
+            command = in.nextInt();
+            if (command == 1)
+            {
+               signUpLibrarian(ketabkhune , ketabdar , karbar , ketab);
+            }
+            else
+            {
+               signInLibrarian(ketabkhune , ketabdar , karbar , ketab);
+            }
+            // Books
+            System.out.println("1.Add book");
+            System.out.println("2.Remove book");
+            System.out.println("3.Search book");
+            // Users
+            String usersUsername;
+            String usersPassword;
+            System.out.println("4.Add user");
+            System.out.println("5.Remove user");
+            System.out.println("6.Search user");
+            System.out.println("7.Update user");
+            // Librarian
+            System.out.println("8.Update librarian");
+            System.out.println("9.Log out");
+            System.out.println("Enter your command");
+            System.out.println("command : ");
+            command = in.nextInt();
+            switch (command)
+            {
+                case 1:
+
+                    ketabkhune.addBook(ketab);
+                    break;
+                case 2:
+                    ketabkhune.removeBook(ketab);
+                    break;
+                case 3:
+                    if (ketabkhune.doesBookExist(ketab))
+                    {
+                        System.out.println(ketab);
+                    }
+                    else
+                    {
+                        System.out.println("This book does not exist!");
+                    }
+                    break;
+                case 4:
+                    System.out.println("Enter the user's username");
+                    System.out.println("Username : ");
+                    usersUsername = in.nextLine();
+                    karbar.setUsername(usersUsername);
+                    System.out.println("Enter user's password");
+                    System.out.println("Password : ");
+                    usersPassword = in.nextLine();
+                    karbar.setPassword(usersPassword);
+                    ketabkhune.addUser(karbar);
+                    break;
+                case 5:
+                    System.out.println("Enter the user's username");
+                    System.out.println("Username : ");
+                    usersUsername = in.nextLine();
+                    karbar.setUsername(usersUsername);
+                    ketabkhune.removeUser(karbar);
+                    break;
+                case 6:
+                    System.out.println("Enter the user's username");
+                    System.out.println("Username : ");
+                    usersUsername = in.nextLine();
+                    karbar.setUsername(usersUsername);
+                    ketabkhune.searchUser(karbar);
+                    break;
+                case 7:
+                    System.out.println("Enter the user's username");
+                    System.out.println("Username : ");
+                    usersUsername = in.nextLine();
+                    karbar.setUsername(usersUsername);
+                    ketabkhune.updateUser(karbar);
+                    break;
+                case 8:
+                    ketabkhune.updateLibrarian(ketabdar);
+                    break;
+                case 9:
+                    logOut();
+            }
+        }
+    }
+
+    public static void signUpUser(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your username");
+        System.out.println("Username : ");
+        String username = input.nextLine();
+        karbar.setUsername(username);
+        if (ketabkhune.doesUserExist(karbar))
+        {
+            System.out.println("You have already signed up!");
+            System.out.println("Enter your password to sign in");
+            System.out.println("Password : ");
+            String password = input.nextLine();
+            karbar.setPassword(password);
+            if (!(ketabkhune.userPasswordCheck(karbar)))
+            {
+                System.out.println("Wrong password!");
+                runMenu();
+            }
+            else
+            {
+                System.out.println("Welcome!");
+            }
+        }
+        else
+        {
+            System.out.println("Enter your password");
+            System.out.println("Password : ");
+            String password = input.nextLine();
+            karbar.setPassword(password);
+            ketabkhune.addUser(karbar);
+        }
+    }
+
+    public static void signInUser(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your username");
+        System.out.println("Username : ");
+        String username = input.nextLine();
+        karbar.setUsername(username);
+        if (ketabkhune.doesUserExist(karbar))
+        {
+            System.out.println("Enter your password");
+            System.out.println("Password : ");
+            String password = input.nextLine();
+            if (!(ketabkhune.userPasswordCheck(karbar)))
+            {
+                System.out.println("Wrong password!");
+                runMenu();
+            }
+            else
+            {
+                System.out.println("Welcome!");
+            }
+        }
+        else
+        {
+            System.out.println("You do not have an account!");
+            System.out.println("You have to sign up!");
+            runMenu();
+        }
+    }
+
+    public static void signUpLibrarian(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your username");
+        System.out.println("Username : ");
+        String username = input.nextLine();
+        ketabdar.setUsername(username);
+        if (ketabkhune.doesLibrarianExist(ketabdar))
+        {
+            System.out.println("You have already signed up!");
+            System.out.println("Enter your password to sign in");
+            System.out.println("Password : ");
+            String password = input.nextLine();
+            ketabdar.setPassword(password);
+            if (!(ketabkhune.librarianPasswordCheck(ketabdar)))
+            {
+                System.out.println("Wrong password!");
+                runMenu();
+            }
+            else
+            {
+                System.out.println("Welcome!");
+            }
+        }
+        else
+        {
+            System.out.println("Enter your password");
+            System.out.println("Password : ");
+            String password = input.nextLine();
+            ketabdar.setPassword(password);
+            ketabkhune.addLibrarian(ketabdar);
+        }
+    }
+
+    public static void  signInLibrarian(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your username");
+        System.out.println("Username : ");
+        String username = input.nextLine();
+        karbar.setUsername(username);
+        if (ketabkhune.doesUserExist(karbar))
+        {
+            System.out.println("Enter your password");
+            System.out.println("Password : ");
+            String password = input.nextLine();
+            if (!(ketabkhune.userPasswordCheck(karbar)))
+            {
+                System.out.println("Wrong password!");
+                runMenu();
+            }
+            else
+            {
+                System.out.println("Welcome!");
+            }
+        }
+        else
+        {
+            System.out.println("You do not have an account!");
+            System.out.println("You have to sign up!");
+            runMenu();
+        }
+    }
+
+    public static void borrowBook(Library ketabkhune , User karbar , Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter the book's name ");
+        System.out.println("Name : ");
+        String name = input.nextLine();
+        ketab.setName(name);
+        System.out.println("Enter the author's name");
+        System.out.println("Author : ");
+        String author = input.nextLine();
+        ketab.setAuthor(author);
+        if (ketabkhune.searchBook(ketab).equals(""))
+        {
+            System.out.println("The library does not have this book or it is not available!");
+        }
+        else
+        {
+            String ISBN = ketabkhune.searchBook(ketab);
+            ketab.setISBN(ISBN);
+            karbar.rentBook(ketabkhune , ketab);
+        }
+    }
+
+    public static void returnBook(Library ketabkhune , User karbar , Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter the book's name ");
+        System.out.println("Name : ");
+        String name = input.nextLine();
+        ketab.setName(name);
+        System.out.println("Enter the author's name");
+        System.out.println("Author : ");
+        String author = input.nextLine();
+        ketab.setAuthor(author);
+        if (karbar.searchRentBook(ketab).equals(""))
+        {
+            System.out.println("You do not have this book!");
+        }
+        else
+        {
+            String ISBN = karbar.searchRentBook(ketab);
+            ketab.setISBN(ISBN);
+            karbar.returnBook(ketabkhune , ketab);
+        }
+    }
+
+    public static void logOut()
+    {
+        System.out.println("You have logged out!");
+        runMenu();
     }
 }
+
+
diff --git a/src/main/java/User.java b/src/main/java/User.java
index e28238f..ba7f8f2 100644
--- a/src/main/java/User.java
+++ b/src/main/java/User.java
@@ -11,11 +11,11 @@ public class User {
     private String username;
     private String password;
 
-    public User(String username, String password)
+    /* public User(String username, String password)
     {
         this.username = username;
         this.password = password;
-    }
+    }*/
 
     public String getUsername() {
         return username;
@@ -59,6 +59,7 @@ public void rentBook(Library ketabkhune , Book ketab){
             {
                 rentBooks.add(ketab);
                 ketabkhune.updateBook(ketab);
+                ketabkhune.decreaseBook(ketab);
             }
             else
             {
@@ -70,6 +71,17 @@ public void rentBook(Library ketabkhune , Book ketab){
             System.out.println("This book does not exist!");
         }
     }
+    public String searchRentBook(Book ketab){
+        //TODO
+        for (int i=0; i<rentBooks.size(); i++)
+        {
+            if (ketab.getName().equals(rentBooks.get(i).getName()) && ketab.getAuthor().equals(rentBooks.get(i).getAuthor()))
+            {
+                return ketab.getISBN();
+            }
+        }
+        return "";
+    }
 
     public void returnBook(Library ketabkhune , Book ketab){
         //TODO
@@ -82,6 +94,7 @@ public void returnBook(Library ketabkhune , Book ketab){
             }
         }
         ketabkhune.updateBook(ketab);
+        ketabkhune.increaseBook(ketab);
     }
 
     public String toString()

From d89f3f455d1dcd36cca546baf1ae50aadeee62d1 Mon Sep 17 00:00:00 2001
From: Navid-Naserazad <126415333+Navid-Naserazad@users.noreply.github.com>
Date: Wed, 8 Mar 2023 21:20:58 +0330
Subject: [PATCH 3/6] third commit

---
 src/main/java/Main.java | 234 +++++++++++++++++++++++-----------------
 1 file changed, 135 insertions(+), 99 deletions(-)

diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 83d3184..949a726 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -29,14 +29,14 @@ public static void runMenu()
         System.out.println("2.Librarians");
         System.out.println("Enter your command");
         System.out.println("command : ");
-        int command = in.nextInt();
+        int command = Integer.parseInt(in.nextLine());
         if (command == 1)
         {
             System.out.println("1.Sign Up");
             System.out.println("2.Sign In");
             System.out.println("Enter your command");
             System.out.println("command : ");
-            command = in.nextInt();
+            command = Integer.parseInt(in.nextLine());
             if (command == 1)
             {
                 signUpUser(ketabkhune , ketabdar , karbar , ketab);
@@ -45,36 +45,14 @@ public static void runMenu()
             {
                 signInUser(ketabkhune , ketabdar , karbar , ketab);
             }
-            System.out.println("1.Borrow book");
-            System.out.println("2.Return book");
-            System.out.println("3.Update User");
-            System.out.println("4.Log out");
-            System.out.println("Enter your command");
-            System.out.println("command : ");
-            command = in.nextInt();
-            if (command == 1)
-            {
-                borrowBook(ketabkhune, karbar, ketab);
-            }
-            else if (command == 2)
-            {
-                returnBook(ketabkhune, karbar, ketab);
-            }
-            else  if (command == 3)
-            {
-                ketabkhune.updateUser(karbar);
-            }
-            else if (command == 4)
-            {
-                logOut();
-            }
+            userMenu(ketabkhune, karbar, ketab);
         }
         else
         {
             System.out.println("1.Sign Up");
             System.out.println("2.Sign In");
             System.out.println("Enter your command");
-            command = in.nextInt();
+            command = Integer.parseInt(in.nextLine());
             if (command == 1)
             {
                signUpLibrarian(ketabkhune , ketabdar , karbar , ketab);
@@ -83,80 +61,8 @@ else if (command == 4)
             {
                signInLibrarian(ketabkhune , ketabdar , karbar , ketab);
             }
-            // Books
-            System.out.println("1.Add book");
-            System.out.println("2.Remove book");
-            System.out.println("3.Search book");
-            // Users
-            String usersUsername;
-            String usersPassword;
-            System.out.println("4.Add user");
-            System.out.println("5.Remove user");
-            System.out.println("6.Search user");
-            System.out.println("7.Update user");
-            // Librarian
-            System.out.println("8.Update librarian");
-            System.out.println("9.Log out");
-            System.out.println("Enter your command");
-            System.out.println("command : ");
-            command = in.nextInt();
-            switch (command)
-            {
-                case 1:
+            librarianMenu(ketabkhune, karbar, ketab, ketabdar);
 
-                    ketabkhune.addBook(ketab);
-                    break;
-                case 2:
-                    ketabkhune.removeBook(ketab);
-                    break;
-                case 3:
-                    if (ketabkhune.doesBookExist(ketab))
-                    {
-                        System.out.println(ketab);
-                    }
-                    else
-                    {
-                        System.out.println("This book does not exist!");
-                    }
-                    break;
-                case 4:
-                    System.out.println("Enter the user's username");
-                    System.out.println("Username : ");
-                    usersUsername = in.nextLine();
-                    karbar.setUsername(usersUsername);
-                    System.out.println("Enter user's password");
-                    System.out.println("Password : ");
-                    usersPassword = in.nextLine();
-                    karbar.setPassword(usersPassword);
-                    ketabkhune.addUser(karbar);
-                    break;
-                case 5:
-                    System.out.println("Enter the user's username");
-                    System.out.println("Username : ");
-                    usersUsername = in.nextLine();
-                    karbar.setUsername(usersUsername);
-                    ketabkhune.removeUser(karbar);
-                    break;
-                case 6:
-                    System.out.println("Enter the user's username");
-                    System.out.println("Username : ");
-                    usersUsername = in.nextLine();
-                    karbar.setUsername(usersUsername);
-                    ketabkhune.searchUser(karbar);
-                    break;
-                case 7:
-                    System.out.println("Enter the user's username");
-                    System.out.println("Username : ");
-                    usersUsername = in.nextLine();
-                    karbar.setUsername(usersUsername);
-                    ketabkhune.updateUser(karbar);
-                    break;
-                case 8:
-                    ketabkhune.updateLibrarian(ketabdar);
-                    break;
-                case 9:
-                    logOut();
-            }
         }
     }
 
@@ -339,6 +245,136 @@ public static void logOut()
         System.out.println("You have logged out!");
         runMenu();
     }
+
+    public static void userMenu(Library ketabkhune, User karbar, Book ketab)
+    {
+        Scanner input = new Scanner(System.in);
+        System.out.println("1.Borrow book");
+        System.out.println("2.Return book");
+        System.out.println("3.Update User");
+        System.out.println("4.Log out");
+        System.out.println("Enter your command");
+        System.out.println("command : ");
+        int command = Integer.parseInt(input.nextLine());
+        if (command == 1)
+        {
+            borrowBook(ketabkhune, karbar, ketab);
+            userMenu(ketabkhune, karbar, ketab);
+        }
+        else if (command == 2)
+        {
+            returnBook(ketabkhune, karbar, ketab);
+            userMenu(ketabkhune, karbar, ketab);
+        }
+        else  if (command == 3)
+        {
+            ketabkhune.updateUser(karbar);
+            userMenu(ketabkhune, karbar, ketab);
+
+        }
+        else if (command == 4)
+        {
+            logOut();
+        }
+    }
+
+    public static void librarianMenu(Library ketabkhune, User karbar, Book ketab, Librarian ketabdar)
+    {
+        Scanner input = new Scanner(System.in);
+        // Books
+        System.out.println("1.Add book");
+        System.out.println("2.Remove book");
+        System.out.println("3.Search book");
+        // Users
+        String usersUsername;
+        String usersPassword;
+        System.out.println("4.Add user");
+        System.out.println("5.Remove user");
+        System.out.println("6.Search user");
+        System.out.println("7.Update user");
+        // Librarian
+        System.out.println("8.Update librarian");
+        System.out.println("9.Log out");
+        System.out.println("Enter your command");
+        System.out.println("command : ");
+        int command = Integer.parseInt(input.nextLine());
+        switch (command)
+        {
+            case 1:
+                System.out.println("Enter book's name");
+                System.out.println("Name : ");
+                String name = input.nextLine();
+                ketab.setName(name);
+                System.out.println("Enter author's name");
+                System.out.println("Author : ");
+                String author = input.nextLine();
+                ketab.setAuthor(author);
+                System.out.println("Enter the year of publish");
+                System.out.println("Year of publish : ");
+                int yearOfPublish = Integer.parseInt(input.nextLine());
+                ketab.setYearOfPublish(yearOfPublish);
+                System.out.println("Enter the book's ISBN");
+                System.out.println("ISBN : ");
+                String ISBN = input.nextLine();
+                ketab.setISBN(ISBN);
+                ketabkhune.addBook(ketab);
+                break;
+            case 2:
+                System.out.println("Enter the book's ISBN");
+                System.out.println("ISBN : ");
+                String removeISBN = input.nextLine();
+                ketab.setISBN(removeISBN);
+                ketabkhune.removeBook(ketab);
+                break;
+            case 3:
+                if (ketabkhune.doesBookExist(ketab))
+                {
+                    System.out.println(ketab);
+                }
+                else
+                {
+                    System.out.println("This book does not exist!");
+                }
+                break;
+            case 4:
+                System.out.println("Enter the user's username");
+                System.out.println("Username : ");
+                usersUsername = input.nextLine();
+                karbar.setUsername(usersUsername);
+                System.out.println("Enter user's password");
+                System.out.println("Password : ");
+                usersPassword = input.nextLine();
+                karbar.setPassword(usersPassword);
+                ketabkhune.addUser(karbar);
+                break;
+            case 5:
+                System.out.println("Enter the user's username");
+                System.out.println("Username : ");
+                usersUsername = input.nextLine();
+                karbar.setUsername(usersUsername);
+                ketabkhune.removeUser(karbar);
+                break;
+            case 6:
+                System.out.println("Enter the user's username");
+                System.out.println("Username : ");
+                usersUsername = input.nextLine();
+                karbar.setUsername(usersUsername);
+                ketabkhune.searchUser(karbar);
+                break;
+            case 7:
+                System.out.println("Enter the user's username");
+                System.out.println("Username : ");
+                usersUsername = input.nextLine();
+                karbar.setUsername(usersUsername);
+                ketabkhune.updateUser(karbar);
+                break;
+            case 8:
+                ketabkhune.updateLibrarian(ketabdar);
+                break;
+            case 9:
+                logOut();
+        }
+    }
 }
 
 

From a9995a8f29fd31bd1306bd12e0810fd3cc2ff7c1 Mon Sep 17 00:00:00 2001
From: Navid-Naserazad <126415333+Navid-Naserazad@users.noreply.github.com>
Date: Wed, 8 Mar 2023 23:40:48 +0330
Subject: [PATCH 4/6] third commit

---
 src/main/java/Book.java      |  10 +-
 src/main/java/Librarian.java |   4 +-
 src/main/java/Main.java      | 234 +++++++++++++++++++----------------
 src/main/java/User.java      |   4 +-
 4 files changed, 134 insertions(+), 118 deletions(-)

diff --git a/src/main/java/Book.java b/src/main/java/Book.java
index c00e7df..f6c6378 100644
--- a/src/main/java/Book.java
+++ b/src/main/java/Book.java
@@ -55,11 +55,11 @@ public void setAvailable(Boolean available) {
 
     public String toString()
     {
-        return "Name : " + name + "" +
-                "Author : " + author + "" +
-                "Year of publish : " +  yearOfPublish + "" +
-                "ISBN : " + ISBN + "" +
-                "Is available ? " + isAvailable;
+        return "Name: " + name + " " +
+                "Author: " + author + " " +
+                "Year of publish: " +  yearOfPublish + "" +
+                "ISBN: " + ISBN + "" +
+                "Is available? " + isAvailable;
     }
 
     public void changeAvailableStatus(){
diff --git a/src/main/java/Librarian.java b/src/main/java/Librarian.java
index 42791f8..68a77da 100644
--- a/src/main/java/Librarian.java
+++ b/src/main/java/Librarian.java
@@ -53,7 +53,7 @@ public void changePassword(){
 
     public String toString()
     {
-        return "Librarian's username : " + username + "" +
-                "Librarian's password : " + password;
+        return "Librarian's username: " + username + " " +
+                "Librarian's password: " + password;
     }
 }
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 949a726..3829301 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -11,17 +11,17 @@ public class Main
 
     public static void main(String[] args)
     {
-        runMenu();
+        Book ketab = new Book();
+        Library ketabkhune = new Library();
+        User karbar = new User();
+        Librarian ketabdar = new Librarian();
+        runMenu(ketab , ketabkhune , karbar , ketabdar);
     }
 
-    public static void runMenu()
+    public static void runMenu(Book ketab, Library ketabkhune, User karbar, Librarian ketabdar)
     {
         //TODO:
 
-        Book ketab = new Book();
-        Library ketabkhune = new Library();
-        User karbar = new User();
-        Librarian ketabdar = new Librarian();
         Scanner in = new Scanner(System.in);
 
         System.out.println("Welcome to the library!");
@@ -45,7 +45,7 @@ public static void runMenu()
             {
                 signInUser(ketabkhune , ketabdar , karbar , ketab);
             }
-            userMenu(ketabkhune, karbar, ketab);
+            userMenu(ketabkhune, karbar, ketab , ketabdar);
         }
         else
         {
@@ -62,7 +62,6 @@ public static void runMenu()
                signInLibrarian(ketabkhune , ketabdar , karbar , ketab);
             }
             librarianMenu(ketabkhune, karbar, ketab, ketabdar);
-
         }
     }
 
@@ -80,14 +79,14 @@ public static void signUpUser(Library ketabkhune , Librarian ketabdar , User kar
             System.out.println("Password : ");
             String password = input.nextLine();
             karbar.setPassword(password);
-            if (!(ketabkhune.userPasswordCheck(karbar)))
+            if (ketabkhune.userPasswordCheck(karbar))
             {
-                System.out.println("Wrong password!");
-                runMenu();
+                System.out.println("Welcome!");
             }
             else
             {
-                System.out.println("Welcome!");
+                System.out.println("Wrong password!");
+                runMenu(ketab , ketabkhune , karbar , ketabdar);
             }
         }
         else
@@ -112,21 +111,21 @@ public static void signInUser(Library ketabkhune , Librarian ketabdar , User kar
             System.out.println("Enter your password");
             System.out.println("Password : ");
             String password = input.nextLine();
-            if (!(ketabkhune.userPasswordCheck(karbar)))
+            if (ketabkhune.userPasswordCheck(karbar))
             {
-                System.out.println("Wrong password!");
-                runMenu();
+                System.out.println("Welcome!");
             }
             else
             {
-                System.out.println("Welcome!");
+                System.out.println("Wrong password!");
+                runMenu(ketab , ketabkhune , karbar , ketabdar);
             }
         }
         else
         {
             System.out.println("You do not have an account!");
             System.out.println("You have to sign up!");
-            runMenu();
+            runMenu(ketab , ketabkhune , karbar , ketabdar);
         }
     }
 
@@ -144,14 +143,14 @@ public static void signUpLibrarian(Library ketabkhune , Librarian ketabdar , Use
             System.out.println("Password : ");
             String password = input.nextLine();
             ketabdar.setPassword(password);
-            if (!(ketabkhune.librarianPasswordCheck(ketabdar)))
+            if (ketabkhune.librarianPasswordCheck(ketabdar))
             {
-                System.out.println("Wrong password!");
-                runMenu();
+                System.out.println("Welcome!");
             }
             else
             {
-                System.out.println("Welcome!");
+                System.out.println("Wrong password!");
+                runMenu(ketab , ketabkhune , karbar , ketabdar);
             }
         }
         else
@@ -171,26 +170,26 @@ public static void  signInLibrarian(Library ketabkhune , Librarian ketabdar , Us
         System.out.println("Username : ");
         String username = input.nextLine();
         karbar.setUsername(username);
-        if (ketabkhune.doesUserExist(karbar))
+        if (ketabkhune.doesLibrarianExist(ketabdar))
         {
             System.out.println("Enter your password");
             System.out.println("Password : ");
             String password = input.nextLine();
-            if (!(ketabkhune.userPasswordCheck(karbar)))
+            if (ketabkhune.librarianPasswordCheck(ketabdar))
             {
-                System.out.println("Wrong password!");
-                runMenu();
+                System.out.println("Welcome!");
             }
             else
             {
-                System.out.println("Welcome!");
+                System.out.println("Wrong password!");
+                runMenu(ketab , ketabkhune , karbar , ketabdar);
             }
         }
         else
         {
             System.out.println("You do not have an account!");
             System.out.println("You have to sign up!");
-            runMenu();
+            runMenu(ketab , ketabkhune , karbar , ketabdar);
         }
     }
 
@@ -240,13 +239,13 @@ public static void returnBook(Library ketabkhune , User karbar , Book ketab)
         }
     }
 
-    public static void logOut()
+    public static void logOut(Book ketab , Library ketabkhune , User karbar , Librarian ketabdar)
     {
         System.out.println("You have logged out!");
-        runMenu();
+        runMenu(ketab , ketabkhune , karbar , ketabdar);
     }
 
-    public static void userMenu(Library ketabkhune, User karbar, Book ketab)
+    public static void userMenu(Library ketabkhune, User karbar, Book ketab , Librarian ketabdar)
     {
         Scanner input = new Scanner(System.in);
         System.out.println("1.Borrow book");
@@ -259,22 +258,22 @@ public static void userMenu(Library ketabkhune, User karbar, Book ketab)
         if (command == 1)
         {
             borrowBook(ketabkhune, karbar, ketab);
-            userMenu(ketabkhune, karbar, ketab);
+            userMenu(ketabkhune, karbar, ketab , ketabdar);
         }
         else if (command == 2)
         {
             returnBook(ketabkhune, karbar, ketab);
-            userMenu(ketabkhune, karbar, ketab);
+            userMenu(ketabkhune, karbar, ketab, ketabdar);
         }
         else  if (command == 3)
         {
             ketabkhune.updateUser(karbar);
-            userMenu(ketabkhune, karbar, ketab);
+            userMenu(ketabkhune, karbar, ketab, ketabdar);
 
         }
         else if (command == 4)
         {
-            logOut();
+            logOut(ketab , ketabkhune , karbar , ketabdar);
         }
     }
 
@@ -294,86 +293,103 @@ public static void librarianMenu(Library ketabkhune, User karbar, Book ketab, Li
         System.out.println("7.Update user");
         // Librarian
         System.out.println("8.Update librarian");
-        System.out.println("9.Log out");
+        System.out.println("9.Search librarian");
+        System.out.println("10.Log out");
         System.out.println("Enter your command");
         System.out.println("command : ");
         int command = Integer.parseInt(input.nextLine());
-        switch (command)
-        {
-            case 1:
-                System.out.println("Enter book's name");
-                System.out.println("Name : ");
-                String name = input.nextLine();
-                ketab.setName(name);
-                System.out.println("Enter author's name");
-                System.out.println("Author : ");
-                String author = input.nextLine();
-                ketab.setAuthor(author);
-                System.out.println("Enter the year of publish");
-                System.out.println("Year of publish : ");
-                int yearOfPublish = Integer.parseInt(input.nextLine());
-                ketab.setYearOfPublish(yearOfPublish);
-                System.out.println("Enter the book's ISBN");
-                System.out.println("ISBN : ");
-                String ISBN = input.nextLine();
-                ketab.setISBN(ISBN);
-                ketabkhune.addBook(ketab);
-                break;
-            case 2:
-                System.out.println("Enter the book's ISBN");
-                System.out.println("ISBN : ");
-                String removeISBN = input.nextLine();
-                ketab.setISBN(removeISBN);
-                ketabkhune.removeBook(ketab);
-                break;
-            case 3:
-                if (ketabkhune.doesBookExist(ketab))
-                {
-                    System.out.println(ketab);
-                }
-                else
-                {
-                    System.out.println("This book does not exist!");
-                }
-                break;
-            case 4:
-                System.out.println("Enter the user's username");
-                System.out.println("Username : ");
-                usersUsername = input.nextLine();
-                karbar.setUsername(usersUsername);
-                System.out.println("Enter user's password");
-                System.out.println("Password : ");
-                usersPassword = input.nextLine();
-                karbar.setPassword(usersPassword);
-                ketabkhune.addUser(karbar);
-                break;
-            case 5:
-                System.out.println("Enter the user's username");
-                System.out.println("Username : ");
-                usersUsername = input.nextLine();
-                karbar.setUsername(usersUsername);
+        if (command == 1) {
+            System.out.println("Enter book's name");
+            System.out.println("Name : ");
+            String name = input.nextLine();
+            ketab.setName(name);
+            System.out.println("Enter author's name");
+            System.out.println("Author : ");
+            String author = input.nextLine();
+            ketab.setAuthor(author);
+            System.out.println("Enter the year of publish");
+            System.out.println("Year of publish : ");
+            int yearOfPublish = Integer.parseInt(input.nextLine());
+            ketab.setYearOfPublish(yearOfPublish);
+            System.out.println("Enter the book's ISBN");
+            System.out.println("ISBN : ");
+            String ISBN = input.nextLine();
+            ketab.setISBN(ISBN);
+            ketabkhune.addBook(ketab);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 2) {
+            System.out.println("Enter the book's ISBN");
+            System.out.println("ISBN : ");
+            String removeISBN = input.nextLine();
+            ketab.setISBN(removeISBN);
+            ketabkhune.removeBook(ketab);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 3) {
+            if (ketabkhune.doesBookExist(ketab)) {
+                System.out.println(ketab);
+            } else {
+                System.out.println("This book does not exist!");
+            }
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 4) {
+            System.out.println("Enter the user's username");
+            System.out.println("Username : ");
+            usersUsername = input.nextLine();
+            karbar.setUsername(usersUsername);
+            System.out.println("Enter user's password");
+            System.out.println("Password : ");
+            usersPassword = input.nextLine();
+            karbar.setPassword(usersPassword);
+            ketabkhune.addUser(karbar);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 5) {
+            System.out.println("Enter the user's username");
+            System.out.println("Username : ");
+            usersUsername = input.nextLine();
+            karbar.setUsername(usersUsername);
+            if (ketabkhune.doesUserExist(karbar))
+            {
                 ketabkhune.removeUser(karbar);
-                break;
-            case 6:
-                System.out.println("Enter the user's username");
-                System.out.println("Username : ");
-                usersUsername = input.nextLine();
-                karbar.setUsername(usersUsername);
-                ketabkhune.searchUser(karbar);
-                break;
-            case 7:
-                System.out.println("Enter the user's username");
-                System.out.println("Username : ");
-                usersUsername = input.nextLine();
-                karbar.setUsername(usersUsername);
-                ketabkhune.updateUser(karbar);
-                break;
-            case 8:
-                ketabkhune.updateLibrarian(ketabdar);
-                break;
-            case 9:
-                logOut();
+                System.out.println("The user is removed");
+            }
+            else
+            {
+                System.out.println("The user does not exist!");
+            }
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 6) {
+            System.out.println("Enter the user's username");
+            System.out.println("Username : ");
+            usersUsername = input.nextLine();
+            karbar.setUsername(usersUsername);
+            ketabkhune.searchUser(karbar);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
         }
+        else if (command == 7) {
+            System.out.println("Enter the user's username");
+            System.out.println("Username : ");
+            usersUsername = input.nextLine();
+            karbar.setUsername(usersUsername);
+            ketabkhune.updateUser(karbar);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 8) {
+            ketabkhune.updateLibrarian(ketabdar);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 9) {
+            ketabkhune.searchLibrarian(ketabdar);
+            librarianMenu(ketabkhune , karbar , ketab , ketabdar);
+        }
+        else if (command == 10) {
+            logOut(ketab , ketabkhune , karbar , ketabdar);
+        }
+
     }
 }
 
diff --git a/src/main/java/User.java b/src/main/java/User.java
index ba7f8f2..2d29fcb 100644
--- a/src/main/java/User.java
+++ b/src/main/java/User.java
@@ -99,7 +99,7 @@ public void returnBook(Library ketabkhune , Book ketab){
 
     public String toString()
     {
-        return "User's username : " + username + "" +
-            "User's password : " + password;
+        return "User's username: " + username + " " +
+            "User's password: " + password;
     }
 }

From de0cb9a3f26e3d5ac031f25b168b99615748f3ad Mon Sep 17 00:00:00 2001
From: Navid-Naserazad <126415333+Navid-Naserazad@users.noreply.github.com>
Date: Thu, 9 Mar 2023 12:08:57 +0330
Subject: [PATCH 5/6] forth commit

---
 src/main/java/Main.java | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 3829301..839960a 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -8,7 +8,7 @@ public class Main
     * don't forget to add at least 1 librarian to the library to make it functionable.
     * *  *** don't limit yourself to our template ***
      */
-
+    static Scanner input = new Scanner(System.in);
     public static void main(String[] args)
     {
         Book ketab = new Book();
@@ -22,21 +22,21 @@ public static void runMenu(Book ketab, Library ketabkhune, User karbar, Libraria
     {
         //TODO:
 
-        Scanner in = new Scanner(System.in);
+        //Scanner in = new Scanner(System.in);
 
         System.out.println("Welcome to the library!");
         System.out.println("1.Users");
         System.out.println("2.Librarians");
         System.out.println("Enter your command");
         System.out.println("command : ");
-        int command = Integer.parseInt(in.nextLine());
+        int command = Integer.parseInt(input.nextLine());
         if (command == 1)
         {
             System.out.println("1.Sign Up");
             System.out.println("2.Sign In");
             System.out.println("Enter your command");
             System.out.println("command : ");
-            command = Integer.parseInt(in.nextLine());
+            command = Integer.parseInt(input.nextLine());
             if (command == 1)
             {
                 signUpUser(ketabkhune , ketabdar , karbar , ketab);
@@ -52,7 +52,7 @@ public static void runMenu(Book ketab, Library ketabkhune, User karbar, Libraria
             System.out.println("1.Sign Up");
             System.out.println("2.Sign In");
             System.out.println("Enter your command");
-            command = Integer.parseInt(in.nextLine());
+            command = Integer.parseInt(input.nextLine());
             if (command == 1)
             {
                signUpLibrarian(ketabkhune , ketabdar , karbar , ketab);
@@ -67,7 +67,7 @@ public static void runMenu(Book ketab, Library ketabkhune, User karbar, Libraria
 
     public static void signUpUser(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
     {
-        Scanner input = new Scanner(System.in);
+        // input = new Scanner(System.in);
         System.out.println("Enter your username");
         System.out.println("Username : ");
         String username = input.nextLine();
@@ -101,7 +101,7 @@ public static void signUpUser(Library ketabkhune , Librarian ketabdar , User kar
 
     public static void signInUser(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         System.out.println("Enter your username");
         System.out.println("Username : ");
         String username = input.nextLine();
@@ -131,7 +131,7 @@ public static void signInUser(Library ketabkhune , Librarian ketabdar , User kar
 
     public static void signUpLibrarian(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         System.out.println("Enter your username");
         System.out.println("Username : ");
         String username = input.nextLine();
@@ -165,7 +165,7 @@ public static void signUpLibrarian(Library ketabkhune , Librarian ketabdar , Use
 
     public static void  signInLibrarian(Library ketabkhune , Librarian ketabdar , User karbar , Book ketab)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         System.out.println("Enter your username");
         System.out.println("Username : ");
         String username = input.nextLine();
@@ -195,7 +195,7 @@ public static void  signInLibrarian(Library ketabkhune , Librarian ketabdar , Us
 
     public static void borrowBook(Library ketabkhune , User karbar , Book ketab)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         System.out.println("Enter the book's name ");
         System.out.println("Name : ");
         String name = input.nextLine();
@@ -218,7 +218,7 @@ public static void borrowBook(Library ketabkhune , User karbar , Book ketab)
 
     public static void returnBook(Library ketabkhune , User karbar , Book ketab)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         System.out.println("Enter the book's name ");
         System.out.println("Name : ");
         String name = input.nextLine();
@@ -247,7 +247,7 @@ public static void logOut(Book ketab , Library ketabkhune , User karbar , Librar
 
     public static void userMenu(Library ketabkhune, User karbar, Book ketab , Librarian ketabdar)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         System.out.println("1.Borrow book");
         System.out.println("2.Return book");
         System.out.println("3.Update User");
@@ -279,7 +279,7 @@ else if (command == 4)
 
     public static void librarianMenu(Library ketabkhune, User karbar, Book ketab, Librarian ketabdar)
     {
-        Scanner input = new Scanner(System.in);
+        //Scanner input = new Scanner(System.in);
         // Books
         System.out.println("1.Add book");
         System.out.println("2.Remove book");

From c281ec89a1900642873b64cbd5155d9eec2e65e3 Mon Sep 17 00:00:00 2001
From: Navid-Naserazad <126415333+Navid-Naserazad@users.noreply.github.com>
Date: Thu, 9 Mar 2023 15:18:14 +0330
Subject: [PATCH 6/6] Added report

---
 report.txt | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 report.txt

diff --git a/report.txt b/report.txt
new file mode 100644
index 0000000..b91ceec
--- /dev/null
+++ b/report.txt
@@ -0,0 +1,8 @@
+Library Management System
+in project shamel 5 class ast ke ebaratand az class Main - class Book - class Library - class User - class librarian
+class main : bakhsh asli in class ro function runMenu tashkil mide. dar in function ma menu asli ro baraye karbar load mikonim. karbar bayad az beyne 2 gozine users va librarians yeki ro entekhab kone. karbar harkodam ro ke entekhab kone 2 gozine moshabeh barash bala miad ke yeki sign up va digari sign in hastesh ke baraye horkodam function tarif shode. vaghti karbar varede account khodesh beshe gozinehaye jadidi barash load mishe ke in gozine ha baraye user va librarian fargh mikone va in gozineha ba function haye userMenu va librarianMenu load mishe. harkodam az in gozineha ham be surate function tarif shode ke az ruye esme har function mishe be kari ke anjam mide pey bord. dar nahayat function runMenu dar function main seda zade shode.
+class Book : in class shamele attribute hayi hastesh ke az esmeshun malume ke chi hastan. baraye hameye in attribute ha function haye getter va setter tarif shode. hamchenin function toString ke etelaat marbut be ketab ro return mikone tarif shode.
+va yek function baraye taghir dar dastrest budan ketab ba esme changeAvailableStatus.
+class Library: in class bozorgtarin va mohem tarin class ast. dar in class 3 arraylist az books , users va librarians sakhte shode ke darvaghe ma dar in 3 arraylist etelaate marbut be ketabha va karbar ha va ketabdar ha ro zakhire mikonim. in class shamele function haye ziadi hast ke az esme har funciton mitavan be karayi un function pey bord.
+class User : ma dar in class 2 attribute baraye user tarif kardim ke ebaratand az String username va String password. baraye in 2 attribute function haye getter va setter tarif kardim. hamchenin yek function changePassword baraye taghir password user tarif kardim. az unjayi ke user mitavanad ketab gharz konad va ketab hayi ke az ketabkhane gharz karde ro pas bedahad , ma yek arraylist rentbooks tarif kardim va 2 function ba nam haye rentBook va returnBook ke in 2 funciton ba tavajoh be esmeshan ketab gharz migiran va ketab gharz gerefte shode az ketabkhune ro pas midan. function toString ham etelaat marbut be user ro be surate yek string return mikone.
+class Librarian : in class ham manande class User daraye 2 attribute username va passrword hast. va baraye in 2 attribute function haye getter va setter tarif shode. hamchenin yek function changePassword baraye taghir passsworde librarian tarif shode. function toString niz etelaate marbut be librarian ro return mikone.
\ No newline at end of file