import sys
from base import BaseWindow
from windows import CustomerWindow, CashierWindow, LoginWindow
from PyQt6.QtWidgets import QApplication
from PyQt6.QtCore import pyqtSignal, pyqtSlot, QObject


class Composer(QObject):
    render_request = pyqtSignal(str)

    def __init__(self,
                 app: QApplication
                ):
        super().__init__()

        self._app = app
        self._entry = LoginWindow("Окно Авторизации", "", self)
        self._current = None

        self.render_request.connect(self._render)

    def run(self):
        self._current = self._entry
        self._current.show()
        sys.exit(self._app.exec())

    @pyqtSlot(str)
    def _render(self, user: str):
        if self._current:
            self._current.close()

        match user:
            case "Покупатель":
                window = CustomerWindow("Покупатель", user, self)
            case "Кассир":
                window = CashierWindow("Кассир", user, self)

        self._current = window
        self._current.show()