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# Employee attendance management
import datetime
import hashlib
import os

def hash_password(password):
    """رمز را هش می‌کند"""
    return hashlib.sha256(password.encode()).hexdigest()

while True:
    print("1.admin 2.employee 3.exit\n")
    choice = input("your choice: ")

    if choice == "1":
        username = input("Username: ")
        password = input("Password: ")

        if username == "admin" and password == "12345":
            print("\nadmin login")

            while True:
                print("\n1. Add employee 2. Exit")
                admin_choice = input("your choice: ")

                if admin_choice == "1":
                    employee_name = input("Name: ")
                    employee_username = input("Username: ")
                    employee_password = input("Password: ")


                    username_exists = False
                    if os.path.exists("employees.txt"):
                        with open("employees.txt", "r") as e:
                            for line in e:
                                parts = line.strip().split("|")
                                if len(parts) == 3 and parts[1] == employee_username:
                                    username_exists = True
                                    break

                    if username_exists:
                        print("This username already exists!")
                    else:
                        hashed_pass = hash_password(employee_password)
                        with open("employees.txt", "a") as e:
                            e.write(f"{employee_name}|{employee_username}|{hashed_pass}\n")
                        print("Employee added successfully")

                elif admin_choice == "2":
                    print("Exiting admin panel...")
                    break

                else:
                    print("Invalid choice")

        else:
            print("Wrong username or password, try again.")

    elif choice == "2":
        username = input("Username: ")
        password = input("Password: ")
        found = False

        if os.path.exists("employees.txt"):
            with open("employees.txt", "r") as e:
                for line in e:
                    parts = line.strip().split("|")
                    if len(parts) == 3:
                        name, user, hashed_pass = parts
                        if username == user and hash_password(password) == hashed_pass:
                            found = True
                            break

        if found:
            now = datetime.datetime.now()
            time_str = now.strftime("%Y-%m-%d %H:%M:%S")
            with open("attendance.txt", "a") as a:
                a.write(f"{username}|{time_str}\n")
            print("Attendance was recorded.")
        else:
            print("Wrong username or password")

    elif choice == "3":
        print("You have exited the program.")
        break

    else:
        print("Invalid entered value.")