"""
Ex. 7.3 from "A primer on...". 
Modify the AccountP class to remove the
_balance attribute and replace it with 
a list of transactions. Usage of the 
original class methods should remain
the same. Also add one method which prints all
transactions. 
"""

from datetime import datetime

class BankAccountP:
    def __init__(self, first_name, last_name, number, balance):
        self._first_name = first_name
        self._last_name = last_name
        self._number = number
        trans = {'time': datetime.now(), 'amount': balance} 
        self._transactions = [trans]

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

    def withdraw(self, amount):
        self.deposit(-amount)
        #self._balance -= amount

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

    def print_info(self):
        first = self._first_name; last = self._last_name
        number = self._number; bal = self.get_balance()
        s = f'{first} {last}, {number}, balance: {bal}'
        print(s)

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


a1 = BankAccountP('John', 'Olsson', '19371554951', 20000)
a2 = BankAccountP('Liz', 'Olsson',  '19371564761', 20000)
a1.deposit(1000)
a1.withdraw(4000)
a2.withdraw(10500)
a1.withdraw(3500)
print("a1's balance:", a1.get_balance())
a1.print_info()
a1.print_transactions()


"""
Terminal> python account3.py 
a1's balance: 13500
John Olsson, 19371554951, balance: 13500
Time: 2023-10-24 17:42:20.057255, amount: 20000
Time: 2023-10-24 17:42:20.057264, amount: 1000
Time: 2023-10-24 17:42:20.057266, amount: -4000
Time: 2023-10-24 17:42:20.057268, amount: -3500
"""