from __future__ import annotations

import ctypes
import time
from dataclasses import dataclass


@dataclass(frozen=True, slots=True)
class ClickResult:
    ok: bool
    message: str


user32 = ctypes.windll.user32

MOUSEEVENTF_LEFTDOWN = 0x0002
MOUSEEVENTF_LEFTUP = 0x0004
MOUSEEVENTF_RIGHTDOWN = 0x0008
MOUSEEVENTF_RIGHTUP = 0x0010


def click(button: str = "left", count: int = 1, interval: float = 0.05) -> ClickResult:
    b = (button or "left").strip().lower()
    c = max(1, min(1000, int(count)))
    iv = max(0.0, min(5.0, float(interval)))
    down_up = (MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_LEFTUP) if b != "right" else (MOUSEEVENTF_RIGHTDOWN, MOUSEEVENTF_RIGHTUP)
    try:
        for _ in range(c):
            user32.mouse_event(down_up[0], 0, 0, 0, 0)
            user32.mouse_event(down_up[1], 0, 0, 0, 0)
            if iv:
                time.sleep(iv)
        return ClickResult(True, f"Clicked {b} x{c}.")
    except Exception as e:
        return ClickResult(False, f"Click failed: {e}")