import json

def write_history(a, b, c, result):
    history = {'Number A': a, 'Number B': b, 'Operation': c, 'Result': result}
    with open('history.json', 'at') as file:
        json.dump(history, file, indent= " ")

    # file = open('history_2.txt', mode='at')
    # lines = [str(a), ' ', str(c), ' ',str(b), ' = ', str(result), '\n', '-' * 15, '\n']
    # file.writelines(lines)
    # file.close()

def print_result(result):
    print('-' * 5)
    print('Результат: ', result)

def slojenie(a, b):
    result = a + b
    write_history(a, b, '+', result)
    print_result(result)

def vichitanie(a, b):
    result = a - b
    write_history(a, b, '-', result)
    print_result(result)

def umnojenie(a, b):
    result = a * b
    write_history(a, b, '*', result)
    print_result(result)

def delenie(a, b):
    result = a / b
    write_history(a, b, '/', result)
    print_result(result)

def stepen(a, b):
    result = a ** b
    write_history(a, b, '**', result)
    print_result(result)

while True:
    vibor = input("""Что хочешь сделать?\t
    Calculator - 'k'\t
    Help - 'i'\t
    history_2 - 'h'\t
    Exit - 'e'\t""")
    if vibor == 'k':
        action = input("Какую операцию хочешь совершить? (+ ,- ,* ,/ ,**)\n")
        if action == 'e': break
        elif action in ('+' ,'-' ,'*' ,'/' ,'**'):
            a = int(input("Введи число a: "))
            b = int(input("Введи число b: "))
            if action == "+":
                slojenie(a, b)
                input()
                print('-' * 5)
            elif action == "-":
                vichitanie(a, b)
                input()
                print('-' * 5)
            elif action == "*":
                umnojenie(a, b)
                input()
                print('-' * 5)
            elif action == "/" and b != 0:
                delenie(a, b)
                input()
                print('-' * 5)
            elif action == "/" and b == 0:
                print("На ноль делить нельзя.")
                input()
                print('-' * 5)
            elif action == "**":
                stepen(a, b)
                input()
                print('-' * 5)
    elif vibor == 'i':
        print(' Calculator v 1.1 \n Аффтар - Влад С. Вы можете отблагодарить разработчика обедом в маке :)')
        input()
    elif vibor == 'h':
        print('-' * 60)
        with open('history.json', 'rt') as file:
            history = json.load(file)
        print(history)
        # file = open('history_2.txt', mode='rt')
        # text = file.read()
        # print(text)
        # file.close()
        input()
    elif vibor == 'e': break