# Standalone MicroPython Voice Animation: Working Gears
# 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 draw_gear(d, gcx, gcy, r, teeth_count, rotation, c=1):
    # Draw gear boundary
    d.rect(gcx - r, gcy - r, r * 2, r * 2, c)
    # Inner shaft hole
    d.fill_rect(gcx - 5, gcy - 5, 10, 10, c)
    d.fill_rect(gcx - 2, gcy - 2, 4, 4, 0)
    
    # Draw gear teeth extending outwards
    for i in range(teeth_count):
        angle = rotation + i * (2 * math.pi / teeth_count)
        # Inner teeth start
        x1 = gcx + int((r - 2) * math.cos(angle))
        y1 = gcy + int((r - 2) * math.sin(angle))
        # Outer teeth end
        x2 = gcx + int((r + 10) * math.cos(angle))
        y2 = gcy + int((r + 10) * math.sin(angle))
        
        d.line(x1, y1, x2, y2, c)
        
        # Add tiny horizontal heads to teeth for thickness
        perp_angle = angle + math.pi / 2
        tx1 = x2 - int(3 * math.cos(perp_angle))
        ty1 = y2 - int(3 * math.sin(perp_angle))
        tx2 = x2 + int(3 * math.cos(perp_angle))
        ty2 = y2 + int(3 * math.sin(perp_angle))
        d.line(tx1, ty1, tx2, ty2, 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 "WORKING..."
    frame = 0

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

            display.clear(0)

            # Draw two rotating, interlocking gears
            # Large Gear (Left & slightly up)
            rot1 = frame * 0.08
            draw_gear(display, cx - 45, cy - 10, r=32, teeth_count=8, rotation=rot1, c=1)

            # Small Gear (Right & slightly down)
            # Rotates counter-clockwise, offset to interlock teeth
            rot2 = -frame * 0.106 + (math.pi / 8)
            draw_gear(display, cx + 45, cy + 20, r=24, teeth_count=6, rotation=rot2, c=1)

            # Little decorative background computer dots
            dot_phase = (frame // 4) % 4
            for i in range(4):
                fill_color = 1 if i == dot_phase else 0
                display.rect(cx - 80 + i * 16, cy + 70, 8, 8, 1)
                if fill_color:
                    display.fill_rect(cx - 78 + i * 16, cy + 72, 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(50)
            except AttributeError:
                time.sleep(0.05)
    except KeyboardInterrupt:
        print("Animation interrupted by user.")

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