# This Python file uses the following encoding: utf-8
from PySide6.QtWidgets import QApplication, QWidget, QSpinBox, QLabel, QPushButton, QVBoxLayout
import pickle
import redis
import sys

class RedisMemoizator:
    def __init__(self, host: str, port, user: str, password: str):
        self.__connection = redis.StrictRedis(host=host, username=user, password=password, decode_responses=False)
    def __call__(self, function):
        def memoize(*args, **kwargs):
            print(f'Сalling {function.__name__}() with {args}, {kwargs}')
            try:
                print(f'\tTry get value: {self._create_key(function, *args, **kwargs)}')
                return self._get_memoized_value(function, *args, **kwargs)
            except Exception as error:
                print(f'\tCall function because: {error}')
                return self._set_memoized_value(function(*args, **kwargs), function, *args, **kwargs)
        return memoize

    def _create_key(self, function, *args, **kwargs):
        return f'{function.__name__}|{args}|{kwargs}'
    def _get_memoized_value(self, function, *args, **kwargs):
        print(f'Load value: [{self._create_key(function, *args, **kwargs)}]')
        if not self.__connection.exists(self._create_key(function, *args, **kwargs)):
            raise Exception('Has no key in redis')
        return pickle.loads(self.__connection.get(self._create_key(function, *args, **kwargs)))
    def _set_memoized_value(self, result, function, *args, **kwargs):
        print(f'Save value: [{self._create_key(function, *args, **kwargs)}|{result}]')
        self.__connection.set(self._create_key(function, *args, **kwargs), pickle.dumps(result))
        return result


@RedisMemoizator(host='178.208.86.244', port=6379, user='', password='')
def fibonacci(number: int) ->int:
    print(f'Calculate fibonacci for number [{number}]')
    if number <= 1:
        return 1

    return fibonacci(number - 1) + fibonacci(number - 2)

if __name__ == '__main__':
    app = QApplication(sys.argv)

    input_value = QSpinBox()
    input_value.setRange(0, 200)
    result_value = QLabel('--')
    calculate_button = QPushButton('Calculate')
    calculate_button.clicked.connect(lambda: result_value.setText(str(fibonacci(input_value.value()))))

    window = QWidget()
    layout = QVBoxLayout()
    window.setLayout(layout)
    layout.addWidget(input_value)
    layout.addWidget(calculate_button)
    layout.addWidget(result_value)
    window.show()

    sys.exit(app.exec())