class Bank:
    def __init__(self):
        self.client_details_list = []
        self.loggedIn = False
        self.cash = 200
        self.Transfer_cash = False

    def register(self, name, num, password):
        cash = self.cash
        conditions = True
        if len(str(num)) > 10 or len(str(num))<10:
            print("Invalid Phone number, please enter a 10 digit number.")
            conditions = False

        if len(password) < 5 or len(password) > 18:
            print("Enter password greater than 5 and less than 18 characters")
            conditions = False

        if conditions == True:
            print("Account created successfully")
            self.client_details_list = [name, num, password, cash]
            with open(f"{name}.txt","w") as f:
                for details in self.client_details_list:
                    f.write(str(details)+"\n")

    def login(self, name, num, password):
        with open(f"{name}.txt", "r") as f:
            details = f.read()
            self.client_details_list = details.split("\n")
            if str(num) == str(self.client_details_list[1]):
                if str(password) in str(self.client_details_list):
                    self.loggedIn = True
                else:
                    print("wrong password brothers")
            else:
                print("wrong phone number")

            if self.loggedIn == True:
                print(f"{name} logged in")
                self.cash = int(self.client_details_list[3])
                self.name = name

            # else:
            #     print("Invalid Credentials")

    def add_cash(self, name, amount):
        if amount>0:
            self.cash += amount
            with open(f"{name}.txt", "r") as f:
                details = f.read()
                self.client_details_list = details.split("\n")

            with open(f"{name}.txt","w") as f:
                f.write(details.replace(str(self.client_details_list[3]),str(self.cash)))

            print("Amount added successfully")

        else:
            print("Enter correct value of amount")

    def transfer_cash(self, name, num, amount):
        with open(f"{name}.txt", "r") as f:
                details = f.read()
                self.client_details_list = details.split("\n")

                if str(num) in self.client_details_list:
                    self.Transfer = True

        if self.Transfer==True:
            total_cash = int(self.client_details_list[3]) + amount
            left_cash = self.cash - amount
            with open(f"{name}.txt","w") as f:
                f.write(details.replace(str(self.client_details_list[3]),str(total_cash)))

            with open(f"{self.name}.txt", "r") as f:
                details_2 = f.read()
                self.client_details_list = details_2.split("\n")

            with open(f"{self.name}.txt","w") as f:
                f.write(details_2.replace(str(self.client_details_list[3]),str(left_cash)))
            print("Amount Transferred Successfully to",name,"-",num)
            print("Balance left =",left_cash)
            self.cash = left_cash


    def update_password(self, password):
        if len(password) < 5 or len(password) > 18:
            print("Enter password greater than 5 and less than 18 characters")

        else:
            with open(f"{self.name}.txt", "r") as f:
                details = f.read()
                self.client_details_list = details.split("\n")

            with open(f"{self.name}.txt","w") as f:
                f.write(details.replace(str(self.client_details_list[2]),str(password)))
            print("Password successfully changed")

    def update_number(self, num):
        if len(str(num)) > 10 or len(str(num))<10:
            print("Invalid Phone number, please enter a 10 digit number.")
        else:
            with open(f"{self.name}.txt", "r") as f:
                details = f.read()
                self.client_details_list = details.split("\n")

            with open(f"{self.name}.txt","w") as f:
                f.write(details.replace(str(self.client_details_list[1]),str(num)))
            print("Number successfully changed")



if __name__ == "__main__":
    Bank_object = Bank()
    print("Welcome to my Bank")
    print("1. Login")
    print("2. Create a New Account")
    choice = int(input("\nSelect a choice : "))

    if choice == 1:
        print("Logging in")
        name = input("Enter name : ")
        num = int(input("Enter Phone Number : "))
        password = input("Enter Password : ")
        Bank_object.login(name,num,password)
        while True:
            if Bank_object.loggedIn:
                print("1. Add amount")
                print("2. Check balance")
                print("3. Transfer amount")
                print("4. Edit profile")
                print("5. Logout")
                action = int(input("\nSelect an action : "))
                if action == 1:
                    print("Balance = ",Bank_object.cash)
                    amount = int(input("Enter amount to be credited : "))
                    Bank_object.add_cash(name, amount)
                    print("\n1. Back to menu")
                    print("\n2. Logout")
                    choice1 = int(input("\nEnter a choice : "))
                    if choice1 == 1:
                        continue
                    elif choice1 == 2:
                        Bank_object.loggedIn = False
                        break

                elif action == 2:
                    print("Balance = ",Bank_object.cash)
                    print("\n1. Back to menu")
                    print("\n2. Logout")
                    choice1 = int(input("Enter a choice : "))
                    if choice1 == 1:
                        continue
                    elif choice1 == 2:
                        Bank_object.loggedIn = False
                        break

                elif action == 3:
                    print("Balance = ", Bank_object.cash)
                    amount = int(input("Enter amount to be transferred : "))
                    if amount <= Bank_object.cash:
                        name = input("Enter name of recipient : ")
                        num = int(input("Enter the phone number of the recipient : "))
                        Bank_object.transfer_cash(name, num, amount)
                        print("\n1. Back to menu")
                        print("\n2. Logout")
                        choice1 = int(input("Enter a choice : "))
                        if choice1 == 1:
                            continue
                        elif choice1 == 2:
                            Bank_object.loggedIn = False
                            break
                    elif amount < 0:
                        print("Enter valid amount")

                    elif amount > Bank_object.cash:
                        print("Insufficient Funds")

                elif action == 4:
                    print("1. Update Password")
                    print("2. Updated Phone Number")
                    update_choice = int(input("Select a choice"))
                    if update_choice == 1:
                        new_pass = input("Enter new password : ")
                        Bank_object.update_password(new_pass)
                        print("\n1. Back to menu")
                        print("\n2. Logout")
                        choice1 = int(input("Enter a choice : "))
                        if choice1 == 1:
                            continue
                        elif choice1 == 2:
                            Bank_object.loggedIn = False
                            break

                    elif update_choice == 2:
                        new_num = int(input("Enter the new Number : "))
                        Bank_object.update_number(new_num)
                        print("\n1. Back to menu")
                        print("\n2. Logout")
                        choice1 = int(input("Enter a choice : "))
                        if choice1 == 1:
                            continue
                        elif choice1 == 2:
                            Bank_object.loggedIn = False
                            break

                elif action == 5:
                    break


    if choice == 2:
        print("Creating a new Account")
        name = input("Enter name : ")
        num = int(input("Enter Phone Number : "))
        password = input("Enter Password : ")
        Bank_object.register(name, num, password)