"""Example pattern for led-simulator / led-driver (generator + yield per tick)."""

import utime


class Blink:
    def __init__(self, presets):
        self.presets = presets

    def run(self, preset):
        colors = preset.c if preset.c else [(255, 255, 255)]
        idx = 0
        delay_ms = max(1, int(preset.d))
        while True:
            rgb = colors[idx % len(colors)]
            self.presets.fill(self.presets.apply_brightness(rgb, preset.b))
            yield
            utime.sleep_ms(delay_ms)
            idx += 1