import logging
import signal
from PySide6 import QtCore
from PySide6.QtWidgets import QApplication
from PySide6.QtCore import QTimer
import sys
import constants
from src.pluginregistry import PluginRegistry
import gettext
from src.ui.icon import Icon

__version__ = '0.2.0'

gettext.install('krowlog', 'locale')

logging.basicConfig(level=logging.INFO)
log = logging.getLogger("main")


def stop_signal(signum, _stackframe):
    """ Handle terminate signal """
    try:
        log.info("Terminate signal received. %s", signum)
        QtCore.QCoreApplication.quit()
    except Exception:
        log.exception("Exception occurred while terminating")
        sys.exit(1)
    sys.exit(0)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    app.setWindowIcon(Icon(constants.krow_icon))  # works only for Linux

    # make icon appear in Windows
    # see https://stackoverflow.com/questions/1551605/how-to-set-applications-taskbar-icon-in-windows-7/1552105#1552105
    if sys.platform == 'win32' or sys.platform == 'cygwin':
        myappid = 'krowlog'  # arbitrary string
        import ctypes
        ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(myappid)

    # workaround to make signals work in QT apps.
    # They do not work out of the box, because the main thread
    # is running in C++ code once app.exec() is executed
    # Forcing an empty lambda to be executed periodically gives
    # control back to python and allows python to react to signals
    timer = QTimer()
    timer.timeout.connect(lambda: None)
    timer.start(100)

    # init plugins
    PluginRegistry.load_plugin("KrowLogPlugin")
    PluginRegistry.load_plugin("OpenFilePlugin")
    PluginRegistry.load_plugin("LogFilePlugin")
    PluginRegistry.load_plugin("NotesPlugin")
    PluginRegistry.load_plugin("TimeDiffPlugin")
    PluginRegistry.load_plugin("FilesBrowserPlugin")

    window = PluginRegistry.execute_single("create_main_window")
    window.show()

    PluginRegistry.execute("after_start")

    signal.signal(signal.SIGINT, stop_signal)
    signal.signal(signal.SIGTERM, stop_signal)

    app.exec()