import utime


class Marquee:
    def __init__(self, driver):
        self.driver = driver

    def run(self, preset):
        colors = preset.c if preset.c else [(255, 255, 255)]
        on_len = max(1, int(preset.n1) if int(preset.n1) > 0 else 3)
        off_len = max(1, int(preset.n2) if int(preset.n2) > 0 else 2)
        step = max(1, int(preset.n3) if int(preset.n3) > 0 else 1)
        phase = self.driver.step % (on_len + off_len)
        last = utime.ticks_ms()
        while True:
            d = max(1, int(preset.d))
            now = utime.ticks_ms()
            if utime.ticks_diff(now, last) >= d:
                c = self.driver.apply_brightness(colors[0], preset.b)
                for i in range(self.driver.num_leds):
                    m = (i + phase) % (on_len + off_len)
                    self.driver.n[i] = c if m < on_len else (0, 0, 0)
                self.driver.n.write()
                phase = (phase + step) % (on_len + off_len)
                self.driver.step = phase
                last = utime.ticks_add(last, d)
                if not preset.a:
                    yield
                    return
            yield