from __future__ import annotations

import sys
from datetime import datetime
from pathlib import Path

import cv2

_REPOSITORY_ROOT_DIRECTORY = Path(__file__).resolve().parent.parent
_FULL_SCREEN_SCREENSHOT_PNG_FILE_PATH = _REPOSITORY_ROOT_DIRECTORY / "output" / "screenshot.png"
_BOUNDING_BOX_DRAWING_OUTPUT_PARENT_DIRECTORY_PATH = _REPOSITORY_ROOT_DIRECTORY / "output"


def draw_bounding_box_xywh_on_current_screenshot_png_and_save_timestamped_png_file(
    bounding_box_left_top_width_height_integer_tuple: tuple[int, int, int, int],
) -> Path:
    bounding_box_left_integer = int(bounding_box_left_top_width_height_integer_tuple[0])
    bounding_box_top_integer = int(bounding_box_left_top_width_height_integer_tuple[1])
    bounding_box_width_integer = int(bounding_box_left_top_width_height_integer_tuple[2])
    bounding_box_height_integer = int(bounding_box_left_top_width_height_integer_tuple[3])
    screenshot_bgr_numpy_array = cv2.imread(
        str(_FULL_SCREEN_SCREENSHOT_PNG_FILE_PATH),
        cv2.IMREAD_COLOR,
    )
    output_image_bgr_numpy_array = screenshot_bgr_numpy_array.copy()
    rectangle_top_left_corner_x_integer = bounding_box_left_integer
    rectangle_top_left_corner_y_integer = bounding_box_top_integer
    rectangle_bottom_right_corner_x_integer = (
        bounding_box_left_integer + bounding_box_width_integer
    )
    rectangle_bottom_right_corner_y_integer = (
        bounding_box_top_integer + bounding_box_height_integer
    )
    green_outline_color_bgr_tuple = (0, 255, 0)
    rectangle_outline_thickness_pixels_integer = 2
    cv2.rectangle(
        output_image_bgr_numpy_array,
        (rectangle_top_left_corner_x_integer, rectangle_top_left_corner_y_integer),
        (rectangle_bottom_right_corner_x_integer, rectangle_bottom_right_corner_y_integer),
        green_outline_color_bgr_tuple,
        rectangle_outline_thickness_pixels_integer,
    )
    timestamp_string_for_output_filename = datetime.now().strftime("%Y%m%d_%H%M%S_%f")
    bounding_box_preview_png_file_path = (
        _BOUNDING_BOX_DRAWING_OUTPUT_PARENT_DIRECTORY_PATH
        / f"boundingbox-{timestamp_string_for_output_filename}.png"
    )
    bounding_box_preview_png_file_path.parent.mkdir(parents=True, exist_ok=True)
    cv2.imwrite(str(bounding_box_preview_png_file_path), output_image_bgr_numpy_array)
    return bounding_box_preview_png_file_path


def start(command_line_argument_string_list: list[str] | None = None) -> int:
    command_line_arguments = (
        command_line_argument_string_list
        if command_line_argument_string_list is not None
        else sys.argv[1:]
    )
    bounding_box_left_integer = int(command_line_arguments[0].strip())
    bounding_box_top_integer = int(command_line_arguments[1].strip())
    bounding_box_width_integer = int(command_line_arguments[2].strip())
    bounding_box_height_integer = int(command_line_arguments[3].strip())
    draw_bounding_box_xywh_on_current_screenshot_png_and_save_timestamped_png_file(
        (
            bounding_box_left_integer,
            bounding_box_top_integer,
            bounding_box_width_integer,
            bounding_box_height_integer,
        ),
    )
    return 0


def main() -> int:
    return start()


__all__ = [
    "draw_bounding_box_xywh_on_current_screenshot_png_and_save_timestamped_png_file",
    "start",
    "main",
]


if __name__ == "__main__":
    raise SystemExit(main())