# Standalone MicroPython Voice Animation: Breathing Idle
# 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 "READY"
    frame = 0

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

            display.clear(0)

            # Cosine-based breathing curve: slow and smooth, scaling from 0 to 1 and back
            breath_scale = 0.5 + 0.5 * math.cos(frame * 0.07)

            # Draw three concentric breathing boxes
            # Base radii are scaled dynamically
            r1 = int(24 + 32 * breath_scale)
            r2 = int(14 + 18 * breath_scale)
            r3 = int(6 + 8 * breath_scale)

            # Outer box
            display.rect(cx - r1, cy - r1, r1 * 2, r1 * 2, 1)
            # Middle box
            display.rect(cx - r2, cy - r2, r2 * 2, r2 * 2, 1)
            # Inner solid core
            display.fill_rect(cx - r3, cy - r3, r3 * 2, r3 * 2, 1)

            # Draw small accent dots at the corners of the outer breathing box
            accent = r1 + 8
            display.fill_rect(cx - accent - 2, cy - accent - 2, 4, 4, 1)
            display.fill_rect(cx + accent - 2, cy - accent - 2, 4, 4, 1)
            display.fill_rect(cx - accent - 2, cy + accent - 2, 4, 4, 1)
            display.fill_rect(cx + accent - 2, cy + accent - 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(65)
            except AttributeError:
                time.sleep(0.065)
    except KeyboardInterrupt:
        print("Animation interrupted by user.")

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