#!/usr/bin/env python
# -*- coding: utf-8 -*-

from typing import Any, Dict, Tuple, TypeVar

from clickgen.util import PNGProvider

from .constants import WIN_CURSORS_CFG, WIN_DELAY, X_CURSORS_CFG, X_DELAY

X = TypeVar("X")


def to_tuple(x: X) -> Tuple[X, X]:
    return (x, x)


def get_config(bitmaps_dir, **kwargs) -> Dict[str, Any]:
    """Return configuration of `GoogleDot` pointers.

    :param bitmaps_dir: Path to .png file's directory.
    :type bitmaps_dir: ``str`` or  ``pathlib.Path``

    :param **kwargs:
        See below

    :Keyword Arguments:
        * *x_sizes* (``List[int]``) --
          List of pixel-sizes for xcursors.
        * *win_canvas_size* (``int``) --
          Windows cursor's canvas pixel-size.
        * *win_size* (``int``) --
          Pixel-size for Windows cursor.

    Example:

    ```python
        get_config(
            bitmaps_dir="./bitmaps",
            x_sizes=[24, 28, 32],
            win_canvas_size=32,
            win_size=24,
        )
    ```
    """

    w_size = to_tuple(kwargs.pop("win_size"))
    w_canvas_size = to_tuple(kwargs.pop("win_canvas_size"))
    raw_x_sizes = kwargs.pop("x_sizes")

    x_sizes = []
    for size in raw_x_sizes:
        x_sizes.append(to_tuple(size))

    png_provider = PNGProvider(bitmaps_dir)
    config: Dict[str, Any] = {}

    for key, item in X_CURSORS_CFG.items():
        x_hot: int = int(item.get("xhot", 0))
        y_hot: int = int(item.get("yhot", 0))
        hotspot: Tuple[int, int] = (x_hot, y_hot)

        delay: int = int(item.get("delay", X_DELAY))
        png = png_provider.get(key)
        if not png:
            raise FileNotFoundError(f"{key} not found")

        data = {
            "png": png,
            "x_sizes": x_sizes,
            "hotspot": hotspot,
            "delay": delay,
        }

        win_data = WIN_CURSORS_CFG.get(key)

        if win_data:
            win_key: str = str(win_data.get("to"))

            position: str = str(win_data.get("position", "center"))
            win_delay: int = int(win_data.get("delay", WIN_DELAY))

            canvas_size = win_data.get("canvas_size", w_canvas_size)
            win_size = win_data.get("size", w_size)

            # Because provided cursor size is bigger than cursor's canvas.
            # Also, "position" settings will not effect on cursor because the
            # cursor's canvas and cursor sizes are equals.
            if (win_size[0] > canvas_size[0]) | (win_size[1] > canvas_size[1]):
                canvas_size = win_size

            config[key] = {
                **data,
                "win_key": win_key,
                "position": position,
                "canvas_size": canvas_size,
                "win_size": win_size,
                "win_delay": win_delay,
            }
        else:
            config[key] = data

    return config