#! /usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Copyright 2020, Nils Hilbricht, Germany ( https://www.hilbricht.net )

This file is part of the Laborejo Software Suite ( https://www.laborejo.org ),

This is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

import logging; logger = logging.getLogger(__name__); logger.info("import")

#Third Party
from PyQt5 import QtCore, QtGui, QtWidgets

#Engine
import engine.api as api #This loads the engine and starts a session.

#QtGui
from .addclientprompt import askForExecutable
from .resources import *

class SystemTray(QtWidgets.QSystemTrayIcon):

    def __init__(self, mainWindow):
        super().__init__(QtGui.QIcon(":icon.png"))
        self.mainWindow = mainWindow
        self.available = self.isSystemTrayAvailable()
        self.show()
        #self.showMessage("Title", "Helllo!", QtWidgets.QSystemTrayIcon.Information) #title, message, icon, timeout.  #has messageClicked() signal.
        #Don't build the context menu here. The engine is not ready to provide us with session information. Let the callbacks do it.

        #self.messageClicked.connect(self._reactSignal_messageClicked)
        self.activated.connect(self._reactSignal_activated)

        #Connect to api callbacks to rebuild context menu when session changes
        api.callbacks.sessionClosed.append(self.buildContextMenu)
        api.callbacks.sessionOpenReady.append(self.buildContextMenu)
        api.callbacks.sessionsChanged.append(self.buildContextMenu)

    def buildContextMenu(self, *args):
        """In a function for readability.
        It gets rebuild everytime a session is opened or closed or the session list changed
        """
        menu = QtWidgets.QMenu()
        def _add(text, function):
            a = QtWidgets.QAction(text, menu)
            menu.addAction(a)
            a.triggered.connect(function)

        nsmSessionName = api.currentSession()

        _add(QtCore.QCoreApplication.translate("TrayIcon", "Hide/Show Agordejo"), lambda: self.mainWindow.toggleVisible(force=None)) #explicit force=None because the qt signal is sending a bool
        menu.addSeparator()

        #Add other pre-defined actions
        if nsmSessionName: #We are in a loaded session
            menu.addAction(self.mainWindow.ui.actionShow_All_Clients)
            _add(QtCore.QCoreApplication.translate("TrayIcon", "Add Client (Prompt)"), lambda: askForExecutable(self.mainWindow.qtApp.desktop()))
            menu.addSeparator()
            menu.addAction(self.mainWindow.ui.actionShow_All_Clients)
            menu.addAction(self.mainWindow.ui.actionHide_All_Clients)
            menu.addSeparator()
            _add(QtCore.QCoreApplication.translate("TrayIcon", "Save && Close {}".format(nsmSessionName)), api.sessionClose)
            _add(QtCore.QCoreApplication.translate("TrayIcon", "Close without Saving {}".format(nsmSessionName)), api.sessionAbort)
            menu.addSeparator()
            _add(QtCore.QCoreApplication.translate("TrayIcon", "Save && Quit Agordejo"), self.mainWindow.closeAndQuit)
            _add(QtCore.QCoreApplication.translate("TrayIcon", "Close without Saving && Quit Agordejo"), self.mainWindow.abortAndQuit)
            menu.addSeparator()
        else:
            for recentName in self.mainWindow.recentlyOpenedSessions.get():
                _add(f"Session: {recentName}", lambda: api.sessionOpen(recentName))

            _add(QtCore.QCoreApplication.translate("TrayIcon", "Quit "), self.mainWindow.menuRealQuit)

        self.setContextMenu(menu)

    def _reactSignal_activated(self, qActivationReason):
        """
        QtWidgets.QSystemTrayIcon.Unknown
        QtWidgets.QSystemTrayIcon.Context
        QtWidgets.QSystemTrayIcon.DoubleClick
        QtWidgets.QSystemTrayIcon.Trigger
        QtWidgets.QSystemTrayIcon.MiddleClick
        """
        logger.info(f"System tray activated with reason {qActivationReason}")
        if qActivationReason == QtWidgets.QSystemTrayIcon.Trigger:
            self.mainWindow.toggleVisible()

    #def _reactSignal_messageClicked(self):
    #    """this signal is emitted when the message displayed using
    #    showMessage() was clicked by the user."""
    #    print ("clicky")