import faulthandler
import logging
import multiprocessing
import os
import platform
import subprocess
import sys
from typing import TextIO

from PyQt6.QtCore import QTranslator, QLocale
from appdirs import user_log_dir

# Check for segfaults if not running in frozen mode
if getattr(sys, 'frozen', False) is False:
    faulthandler.enable()

# Sets stderr to no-op TextIO when None (run as Windows GUI).
# Resolves https://github.com/chidiwilliams/buzz/issues/221
if sys.stderr is None:
    sys.stderr = TextIO()

# Adds the current directory to the PATH, so the ffmpeg binary get picked up:
# https://stackoverflow.com/a/44352931/9830227
app_dir = getattr(sys, '_MEIPASS', os.path.dirname(
    os.path.abspath(__file__)))
os.environ["PATH"] += os.pathsep + app_dir

# Add the app directory to the DLL list: https://stackoverflow.com/a/64303856
if platform.system() == 'Windows':
    os.add_dll_directory(app_dir)

if __name__ == "__main__":
    # Contrary to the multiprocessing docs (https://docs.python.org/3/library/multiprocessing.html#contexts-and-start-methods),
    # running sub-processes seem to exit with code 1 on Linux and Mac ARM without setting the "spawn" start method
    if platform.system() == 'Linux':
        multiprocessing.set_start_method('spawn')

    if platform.system() == 'Darwin' and platform.processor() == 'arm':
        print('setting start method to spawn')
        multiprocessing.set_start_method('spawn')

    # Fixes opening new window when app has been frozen on Windows:
    # https://stackoverflow.com/a/33979091
    multiprocessing.freeze_support()

    log_dir = user_log_dir(appname='Buzz')
    os.makedirs(log_dir, exist_ok=True)
    logging.basicConfig(
        filename=os.path.join(log_dir, 'logs.txt'),
        level=logging.DEBUG,
        format="[%(asctime)s] %(module)s.%(funcName)s:%(lineno)d %(levelname)s -> %(message)s")

    cmd = subprocess.run(['ffmpeg', '-h'])
    logging.debug('subprocess exited with code %s', cmd.returncode)

    from buzz.gui import Application

    app = Application()

    sys.exit(app.exec())