#Ex 7.3 from "A primer on..."
# add functionality to a class
from datetime import datetime


class AccountP:
    def __init__(self, name, account_number, initial_amount):
        self._name = name
        self._no = account_number
        trans = {'time':datetime.now(), 'amount':initial_amount}
        self._transactions = [trans]

    def deposit(self, amount):
        trans = {'time':datetime.now(), 'amount':amount}
        self._transactions.append(trans)

    def withdraw(self, amount):
        self.deposit(-amount)

    def get_balance(self):
        bal = 0
        for t in self._transactions:
            bal += t['amount']
        return bal

    def dump(self):
        s = f'{self._name}, {self._no}, balance: {self.get_balance()}'
        print(s)

    def print_transactions(self):
        for t in self._transactions:
            print(f"Time: {t['time']} Amount: {t['amount']}")


#a few transactions to check that it works
a = AccountP('js',123,100)
a.deposit(100)
a.withdraw(50)
print(a.get_balance())
a.dump()
a.print_transactions()

"""
Terminal> python Account3.py
150
js, 123, balance: 150
Time: 2022-10-24 14:36:54.497704 Amount: 100
Time: 2022-10-24 14:36:54.497713 Amount: 100
Time: 2022-10-24 14:36:54.497715 Amount: -50
"""