import pyautogui

class DesktopAutomation:
    """Real implementation for desktop automation using PyAutoGUI."""
    def __init__(self):
        # Add a slight delay between pyautogui actions for safety
        pyautogui.PAUSE = 0.5
        # Fail-safe: moving mouse to any corner throws an exception
        pyautogui.FAILSAFE = True

    def type_text(self, text: str) -> bool:
        """Types the specified text."""
        try:
            pyautogui.write(text, interval=0.05)
            return True
        except Exception:
            return False

    def click(self, x: int, y: int) -> bool:
        """Clicks at the specified (x, y) coordinates."""
        try:
            pyautogui.click(x, y)
            return True
        except Exception:
            return False

    def take_screenshot(self) -> bytes:
        """Takes a real screenshot of the desktop and returns PNG bytes."""
        try:
            screenshot = pyautogui.screenshot()
            import io
            with io.BytesIO() as output:
                screenshot.save(output, format="PNG")
                return output.getvalue()
        except Exception:
            return b""
