# Standalone MicroPython Voice Animation: Success Spark
# Exposes run(text="", frames=...) and runs automatically if executed directly.
import time
import math

try:
    import board_config
    display = getattr(board_config, 'display_instance', None)
except Exception:
    board_config = None
    display = None

def draw_center_text(d, msg, y, w, scale=1, c=1):
    char_w = 8 * scale
    x = max(0, (w - len(msg) * char_w) // 2)
    if hasattr(d, 'text_large') and scale > 1:
        try:
            d.text_large(msg, x, y, scale, c)
            return
        except Exception:
            pass
    d.text(msg, x, y, c)

def run(text="", frames=100):
    if not display:
        print("board_config.display_instance is not available. Skipping animation.")
        return

    width = getattr(display, 'width', 400)
    height = getattr(display, 'height', 300)
    cx, cy = width // 2, height // 2

    label = text if text else "SUCCESS!"
    frame = 0

    try:
        while True:
            if frames is not None and frames > 0 and frame >= frames:
                break

            display.clear(0)

            # Draw a thick success checkmark
            display.line(cx - 20, cy + 5, cx - 5, cy + 20, 1)
            display.line(cx - 19, cy + 5, cx - 4, cy + 20, 1)
            display.line(cx - 5, cy + 20, cx + 25, cy - 10, 1)
            display.line(cx - 4, cy + 20, cx + 26, cy - 10, 1)

            # Sparkles/rays radiating outwards
            # The rays expand from r=30 to r=90 and loop
            dist = (frame * 6) % 80
            
            # Draw rays only if within reasonable expansion bounds
            if dist < 65:
                for angle_deg in range(0, 360, 45):
                    angle = math.radians(angle_deg)
                    # Outer point of sparkle
                    sx1 = cx + int(dist * math.cos(angle))
                    sy1 = cy + int(dist * math.sin(angle))
                    # Inner point of sparkle
                    sx2 = cx + int((dist + 12) * math.cos(angle))
                    sy2 = cy + int((dist + 12) * math.sin(angle))
                    
                    display.line(sx1, sy1, sx2, sy2, 1)

                    # Add side sparkles for variety on cross angles (45, 135, etc.)
                    if angle_deg % 90 != 0:
                        display.fill_rect(sx2 - 2, sy2 - 2, 4, 4, 1)

            # Draw centered text label at the bottom
            draw_center_text(display, label, height - 30, width, scale=1, c=1)

            display.show()
            frame += 1

            try:
                time.sleep_ms(45)
            except AttributeError:
                time.sleep(0.045)
    except KeyboardInterrupt:
        print("Animation interrupted by user.")

if __name__ in ('__main__', '__name__'):
    run()