Accepted

Project_Submission/CP-06/README.md

@@ -1,3 +1,295 @@
 # 19CSE201 - Advanced Programming
 ![](https://img.shields.io/badge/Batch-22CYS-lightgreen) ![](https://img.shields.io/badge/UG-blue) ![](https://img.shields.io/badge/Subject-AdP-blue)
-![](https://img.shields.io/badge/-HPOJ-brown)
+![](https://img.shields.io/badge/-HPOJ-brown)
+
+## Student Management System
+```
+import os
+import re
+import hashlib
+import getpass
+from colorama import init, Fore, Style
+
+init(autoreset=True)
+
+YELLOW = Fore.YELLOW
+RESET = Style.RESET_ALL
+
+class User:
+    def __init__(self, username):
+        """
+        Initialize a new instance of the User class with the provided username.
+        """
+        self.username = username
+        self.filename = f"{username}.txt"
+
+    def file_exists(self):
+        """
+        Check if a file with the given filename exists.
+
+        Returns, True if the file exists, False otherwise.
+        """
+        return os.path.isfile(self.filename)
+
+    def hash_password(self, password):
+        """
+        Hash a password using the SHA-256 algorithm.
+
+        Returns, The hashed password.
+        """
+        hashed_password = hashlib.sha256(password.encode()).hexdigest()
+        return hashed_password
+
+    def is_valid_email(self, email):
+        """
+        Check if the given email is in a valid format.
+
+        Returns, True if the email is valid, False otherwise.
+        """
+        email_pattern = re.compile(r"[^@]+@[^@]+\.[^@]+")
+        return bool(re.match(email_pattern, email))
+
+    def authenticate_user(self, password):
+        """
+        Authenticate a user by checking the provided username and password.
+
+        Returns, True if authentication is successful, False otherwise.
+        """
+        if not self.file_exists():
+            print("No such username.")
+            return False
+
+        with open(self.filename, "r") as file:
+            stored_hashed_password = file.readline().strip()
+
+        hashed_password_to_check = self.hash_password(password)
+
+        if hashed_password_to_check == stored_hashed_password:
+            return True
+        else:
+            print("Incorrect password.")
+            return False
+
+    def display_user_details(self):
+        """
+        Display details of a user based on the provided username.
+        """
+        if not self.file_exists():
+            print("No such username.")
+            return
+
+        with open(self.filename, "r") as file:
+            password = file.readline().strip()
+            first_name, last_name = file.readline().split()
+            email = file.readline().strip()
+            phone_number = file.readline().strip()
+            subject_marks = list(map(float, file.readline().split()))
+            attendance_percentage = float(file.readline().strip())
+
+        cgpa = sum(subject_marks) / 60.0
+
+        print("\nUsername:", self.username)
+        print("Name:", first_name, last_name)
+        print("Email:", email)
+        print("Phone Number:", phone_number)
+        print("Subject Marks:", " ".join([f"{mark:.2f}" for mark in subject_marks]))
+        print(f"Attendance Percentage: {attendance_percentage:.2f}%")
+        print(f"CGPA: {cgpa:.2f}")
+
+    def edit_profile(self):
+        """
+        Allow a user to edit their profile details.
+        """
+        if not self.file_exists():
+            print("No such username.")
+            return
+
+        with open(self.filename, "r") as file:
+            user_data = file.readlines()
+
+        while True:
+            print("\nChoose the field to edit:")
+            print("1. First Name")
+            print("2. Last Name")
+            print("3. Email")
+            print("4. Phone Number")
+            print("5. Marks")
+            print("6. Attendance Percentage")
+            print("7. Finish Editing")
+
+            try:
+                option = int(input("Enter your option: "))
+
+                if option == 1:
+                    user_data[1] = f"{input('Enter new First Name: ')} {user_data[1].split()[1]}\n"
+                elif option == 2:
+                    user_data[1] = f"{user_data[1].split()[0]} {input('Enter new Last Name: ')}\n"
+                elif option == 3:
+                    user_data[2] = f"{input('Enter new Email: ')}\n"
+                elif option == 4:
+                    user_data[3] = f"{input('Enter new Phone Number: ')}\n"
+                elif option == 5:
+                    print("Enter new marks:")
+                    for i in range(6):
+                        try:
+                            subject_mark = float(input(f"Subject {i + 1} - "))
+                            user_data[4] = " ".join([f"{subject_mark:.2f}" for subject_mark in [subject_mark]])
+                        except ValueError:
+                            print("Invalid input. Please enter a numeric value for marks.")
+                elif option == 6:
+                    user_data[5] = f"{input('Enter new Attendance Percentage: ')}\n"
+                elif option == 7:
+                    break
+                else:
+                    print("Invalid option. Please choose again.")
+
+            except ValueError:
+                print("Invalid input. Please enter a number.")
+
+        with open(self.filename, "w") as file:
+            file.writelines(user_data)
+
+        print("Profile updated successfully.")
+
+class Student(User):
+    def __init__(self, username):
+        """
+        Call the constructor of the base class (User) using super().
+        """
+        super().__init__(username)
+
+    def signup(self):
+        """
+        Allow a user to sign up by providing necessary details and storing them in a file.
+        """
+        if self.file_exists():
+            print("Username already exists.")
+            return
+
+        password = getpass.getpass("Enter password: ")
+        hashed_password = self.hash_password(password)
+
+        with open(self.filename, "w") as file:
+            file.write(hashed_password + "\n")
+
+            # Additional user details
+            first_name = input("Enter first name: ")
+            last_name = input("Enter last name: ")
+
+            # Email validation loop
+            while True:
+                email = input("Enter email: ")
+                if self.is_valid_email(email):
+                    break
+                else:
+                    print("Invalid email format. Please enter a valid email.")
+
+            # Phone number validation loop
+            while True:
+                phone_number = input("Enter phone number: ")
+                if len(phone_number) == 10 and phone_number.isdigit():
+                    break
+                else:
+                    print("Invalid phone number. Please enter a 10-digit numeric phone number.")
+
+            print("Enter marks:")
+            subject_marks = []
+            subjects = ["Subject 1", "Subject 2", "Subject 3", "Subject 4", "Subject 5", "Subject 6"]
+            for i in range(6):
+                try:
+                    mark = float(input(f"{subjects[i]} - "))
+                    subject_marks.append(mark)
+                except ValueError:
+                    print("Invalid input. Please enter a numeric value for marks.")
+
+            attendance_percentage = float(input("Enter attendance percentage: "))
+
+            # Write user details to file
+            file.write(f"{first_name} {last_name}\n")
+            file.write(f"{email}\n")
+            file.write(f"{phone_number}\n")
+            file.write(" ".join([f"{mark:.2f}" for mark in subject_marks]) + "\n")
+            file.write(f"{attendance_percentage:.2f}\n")
+
+        print("\nSignup successful.")
+
+class Menu:
+    def display_main_menu():
+        """
+        Display the main menu options for the student portal.
+        """
+        print("\n1. Login")
+        print("2. Signup")
+        print("3. Exit")
+
+    def display_welcome_message():
+        """
+        Display a welcome message for the student portal.
+        """
+        print(YELLOW + "                                      Welcome to the student portal" + RESET)
+
+def main():
+    os.system("clear")
+    username = ""
+    loggedIn = 0
+    Menu.display_welcome_message()
+
+    while True:
+        Menu.display_main_menu()
+
+        try:
+            choice = int(input("\nEnter your choice: "))
+
+            if choice == 1:  # Login
+                if loggedIn:
+                    print("You are already logged in.")
+                    continue
+
+                username = input("Enter username: ")
+                password = input("Enter password: ")
+
+                student = Student(username)
+                if student.authenticate_user(password):
+                    print("Login successful.")
+                    loggedIn = 1
+
+            elif choice == 2:  # Signup
+                if loggedIn:
+                    print("You are already logged in.")
+                    continue
+
+                student = Student(input("Enter username: "))
+                student.signup()
+
+            elif choice == 3:  # Exit
+                print("Exiting the program.")
+                break
+
+            else:
+                print("Invalid choice.")
+
+            if loggedIn:
+                while True:
+                    student.display_user_details()
+
+                    print("\n1. Logout")
+                    print("2. Edit Profile")
+
+                    option = input("Enter your option: ")
+
+                    if option == '1':  # Logout
+                        loggedIn = 0
+                        break
+
+                    elif option == '2':  # Edit Profile
+                        student.edit_profile()
+
+                    else:
+                        print("Invalid option.")
+
+        except ValueError:
+            print("Invalid input. Please enter a number.")
+
+if __name__ == "__main__":
+    main()
+```