# Python imports
import signal
import os

# Lib imports

# Application imports
from utils.debugging import debug_signal_handler
from utils.ipc_server import IPCServer
from core.window import Window



class AppLaunchException(Exception):
    ...



class Application:
    """ docstring for Application. """

    def __init__(self):
        super(Application, self).__init__()

        self.setup_debug_hook()


    def run(self):
        if not settings_manager.is_trace_debug():
            if not self.load_ipc():
                return

        win = Window()
        win.start()

    def load_ipc(self):
        args, \
        unknownargs = settings_manager.get_starting_args()
        ipc_server  = IPCServer()

        self.ipc_realization_check(ipc_server)
        if ipc_server.is_ipc_alive:
            return True

        logger.warning(f"{app_name} IPC Server Exists: Have sent path(s) to it and closing...")
        for arg in unknownargs + [args.new_tab,]:
            if os.path.isfile(arg):
                message = f"FILE|{arg}"
                ipc_server.send_ipc_message(message)

            if os.path.isdir(arg):
                message = f"DIR|{arg}"
                ipc_server.send_ipc_message(message)

        return False


    def ipc_realization_check(self, ipc_server):
        try:
            ipc_server.create_ipc_listener()
        except Exception as e:
            ipc_server.send_test_ipc_message()

    def setup_debug_hook(self):
        try:
            # kill -SIGUSR2 <pid> from Linux/Unix or SIGBREAK signal from Windows
            signal.signal(
                vars(signal).get("SIGBREAK") or vars(signal).get("SIGUSR2"),
                debug_signal_handler
            )
        except ValueError:
            # Typically: ValueError: signal only works in main thread
            ...