from typing import Callable


class Timer:

    def __init__(self, name: str, initial: float, seconds: float, count: int, callback: Callable[[], None] = None):
        self._name = name
        self._enabled = False

        self._initial = initial
        self._seconds = seconds
        self._rest = 0

        self._count = count
        self._current = 0

        self._callback = callback

    def restart(self):
        self._enabled = True
        self._current = 0
        self._rest = self._initial

    def tick(self, dt: float):
        if not self._enabled or self._seconds == 0 or self._current >= self._count:
            return

        self._rest -= dt
        if self._rest <= 0:
            self._current += 1
            self._rest += self._seconds
            if self._callback:
                self._callback()

    def cancel(self):
        self._enabled = False

    def current(self):
        return self._current

    def count(self):
        return self._count

    def rest(self):
        return self._count - self._current

    def complete(self):
        return self._current >= self._count

    def running(self):
        return self._enabled and not self.complete()