import atexit
import os
import shutil
import signal
import subprocess
from pathlib import Path

import toml
from rich.console import Console

from .__about__ import __name__

console: Console = Console()

SETTINGS_EXISTED = False
CONFIG_PATH = Path.home() / ".config" / __name__ / "config.toml"
SETTINGS = {
}

def load_config():
    global SETTINGS_EXISTED

    if CONFIG_PATH.exists():
        SETTINGS_EXISTED = True
        with CONFIG_PATH.open("r", encoding="utf-8") as f:
            config = toml.load(f)
            SETTINGS.update(config)

load_config()

def save_config():
    CONFIG_PATH.parent.mkdir(exist_ok=True, parents=True)

    with CONFIG_PATH.open("w", encoding="utf-8") as f:
        toml.dump(SETTINGS, f)


atexit.register(save_config)
signal.signal(signal.SIGTERM, save_config)
signal.signal(signal.SIGINT, save_config)


def edit_file(file_name: Path):
    if hasattr(os, "startfile"):
        os.startfile(file_name)
    elif shutil.which("xdg-open"):
        subprocess.call(["xdg-open", file_name])
    elif "EDITOR" in os.environ:
        subprocess.call([os.environ["EDITOR"], file_name])

    # wait till the last changed is different or ctrl+c is pressed
    console.print("Waiting till either the file is changed, or ctrl+c is pressed")
    try:
        last_change = os.path.getmtime(file_name)
        while True:
            if os.path.getmtime(file_name) != last_change:
                break

            time.sleep(0.1)
    except KeyboardInterrupt:
        print("No changes were saved")