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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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# This file is part of Beremiz, a Integrated Development Environment for

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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

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#

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# Copyright (C) 2016 - 2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>

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#

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# See COPYING file for copyrights details.

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#

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# This program is free software; you can redistribute it and/or

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# modify it under the terms of the GNU General Public License

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# as published by the Free Software Foundation; either version 2

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# of the License, or (at your option) any later version.

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#

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with this program; if not, write to the Free Software

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

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from __future__ import absolute_import

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from __future__ import print_function

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import os

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import sys

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import getopt

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import wx

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from wx.lib.agw.advancedsplash import AdvancedSplash, AS_NOTIMEOUT, AS_CENTER_ON_SCREEN

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import util.paths as paths

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class BeremizIDELauncher(object):

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    def __init__(self):

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        self.app = None

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        self.frame = None

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        self.updateinfo_url = None

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        self.extensions = []

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        self.app_dir = paths.AbsDir(__file__)

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        self.projectOpen = None

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        self.buildpath = None

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        self.splash = None

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        self.splashPath = self.Bpath("images", "splash.png")

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        self.modules = ["BeremizIDE"]

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        self.debug = os.path.exists("BEREMIZ_DEBUG")

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        self.handle_exception = None

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    def Bpath(self, *args):

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        return os.path.join(self.app_dir, *args)

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    def Usage(self):

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        print("Usage:")

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        print("%s [Options] [Projectpath] [Buildpath]" % sys.argv[0])

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        print("")

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        print("Supported options:")

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        print("-h --help                    Print this help")

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        print("-u --updatecheck URL         Retrieve update information by checking URL")

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        print("-e --extend PathToExtension  Extend IDE functionality by loading at start additional extensions")

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        print("")

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        print("")

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    def SetCmdOptions(self):

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        self.shortCmdOpts = "hu:e:"

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        self.longCmdOpts = ["help", "updatecheck=", "extend="]

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    def ProcessOption(self, o, a):

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        if o in ("-h", "--help"):

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            self.Usage()

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            sys.exit()

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        if o in ("-u", "--updatecheck"):

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            self.updateinfo_url = a

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        if o in ("-e", "--extend"):

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            self.extensions.append(a)

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    def ProcessCommandLineArgs(self):

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        self.SetCmdOptions()

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        try:

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            opts, args = getopt.getopt(sys.argv[1:], self.shortCmdOpts, self.longCmdOpts)

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        except getopt.GetoptError:

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            # print help information and exit:

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            self.Usage()

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            sys.exit(2)

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        for o, a in opts:

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            self.ProcessOption(o, a)

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        if len(args) > 2:

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            self.Usage()

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            sys.exit()

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        elif len(args) == 1:

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            self.projectOpen = args[0]

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            self.buildpath = None

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        elif len(args) == 2:

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            self.projectOpen = args[0]

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            self.buildpath = args[1]

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    def CreateApplication(self):

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        BeremizAppType = wx.App if wx.VERSION >= (3, 0, 0) else wx.PySimpleApp

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        class BeremizApp(BeremizAppType):

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            def OnInit(_self):  # pylint: disable=no-self-argument

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                self.ShowSplashScreen()

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                return True

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        self.app = BeremizApp(redirect=self.debug)

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        self.app.SetAppName('beremiz')

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        if wx.VERSION < (3, 0, 0):

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            wx.InitAllImageHandlers()

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    def ShowSplashScreen(self):

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        class Splash(AdvancedSplash):

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            Painted = False

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            def OnPaint(_self, event):  # pylint: disable=no-self-argument

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                AdvancedSplash.OnPaint(_self, event)

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                if not _self.Painted:  # trigger app start only once

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                    _self.Painted = True

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                    wx.CallAfter(self.AppStart)

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        bmp = wx.Image(self.splashPath).ConvertToBitmap()

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        self.splash = Splash(None,

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                             bitmap=bmp,

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                             agwStyle=AS_NOTIMEOUT | AS_CENTER_ON_SCREEN)

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    def BackgroundInitialization(self):

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        self.InitI18n()

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        self.CheckUpdates()

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        self.LoadExtensions()

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        self.ImportModules()

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    def InitI18n(self):

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        from util.misc import InstallLocalRessources

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        InstallLocalRessources(self.app_dir)

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    def globals(self):

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        """

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        allows customizations to specify what globals

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        are passed to extensions

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        """

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        return globals()

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    def LoadExtensions(self):

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        for extfilename in self.extensions:

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            from util.TranslationCatalogs import AddCatalog

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            from util.BitmapLibrary import AddBitmapFolder

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            extension_folder = os.path.split(os.path.realpath(extfilename))[0]

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            sys.path.append(extension_folder)

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            AddCatalog(os.path.join(extension_folder, "locale"))

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            AddBitmapFolder(os.path.join(extension_folder, "images"))

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            execfile(extfilename, self.globals())

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    def CheckUpdates(self):

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        if self.updateinfo_url is not None:

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            self.updateinfo = _("Fetching %s") % self.updateinfo_url

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            def updateinfoproc():

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                try:

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                    import urllib2

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                    self.updateinfo = urllib2.urlopen(self.updateinfo_url, None).read()

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                except Exception:

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                    self.updateinfo = _("update info unavailable.")

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            from threading import Thread

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            self.splash.SetText(text=self.updateinfo)

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            updateinfoThread = Thread(target=updateinfoproc)

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            updateinfoThread.start()

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            updateinfoThread.join(2)

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            self.splash.SetText(text=self.updateinfo)

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    def ImportModules(self):

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        for modname in self.modules:

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            mod = __import__(modname)

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            setattr(self, modname, mod)

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    def InstallExceptionHandler(self):

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        import version

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        import util.ExceptionHandler

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        self.handle_exception = util.ExceptionHandler.AddExceptHook(version.app_version)

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    def CreateUI(self):

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        self.frame = self.BeremizIDE.Beremiz(None, self.projectOpen, self.buildpath)

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    def CloseSplash(self):

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        if self.splash:

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            self.splash.Close()

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    def ShowUI(self):

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        self.frame.Show()

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    def PreStart(self):

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        self.ProcessCommandLineArgs()

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        self.CreateApplication()

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    def AppStart(self):

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        try:

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            self.BackgroundInitialization()

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            self.CreateUI()

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            self.CloseSplash()

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            self.ShowUI()

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        except (KeyboardInterrupt, SystemExit):

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            raise

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        except Exception:

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            if self.handle_exception is not None:

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                self.handle_exception(*sys.exc_info(), exit=True)

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            else:

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                raise

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    def MainLoop(self):

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        self.app.MainLoop()

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    def Start(self):

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        self.PreStart()

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        self.InstallExceptionHandler()

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        self.MainLoop()

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if __name__ == '__main__':

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    beremiz = BeremizIDELauncher()

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    beremiz.Start()