#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# Copyright (c) 2016 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the main script for histedit.

Depending on the file name given by the Mercurial histedit command one
of two possible dialogs will be shown.
"""


import sys
import os

sys.path.insert(1, os.path.join(
    os.path.dirname(__file__), "..", "..", "..", ".."))
# four times up is the eric6 package directory

for arg in sys.argv[:]:
    if arg.startswith("--config="):
        import Globals
        configDir = arg.replace("--config=", "")
        Globals.setConfigDir(configDir)
        sys.argv.remove(arg)
    elif arg.startswith("--settings="):
        from PyQt5.QtCore import QSettings
        settingsDir = os.path.expanduser(arg.replace("--settings=", ""))
        if not os.path.isdir(settingsDir):
            os.makedirs(settingsDir)
        QSettings.setPath(QSettings.IniFormat, QSettings.UserScope,
                          settingsDir)
        sys.argv.remove(arg)

from Globals import AppInfo

from Toolbox import Startup


def createMainWidget(argv):
    """
    Function to create the main widget.
    
    @param argv list of commandline parameters
    @type list of str
    @return reference to the main widget or None in case of an error
    @rtype QWidget or None
    """
    if len(argv) > 1:
        fileName = os.path.basename(argv[1])
        if fileName.startswith("hg-histedit-"):
            from HgHisteditPlanEditor import HgHisteditPlanEditor
            return HgHisteditPlanEditor(argv[1])
        elif fileName.startswith("hg-editor-"):
            from HgHisteditCommitEditor import HgHisteditCommitEditor
            return HgHisteditCommitEditor(argv[1])
    
    return None


def main():
    """
    Main entry point into the application.
    """
    options = [
        ("--config=configDir",
         "use the given directory as the one containing the config files"),
        ("--settings=settingsDir",
         "use the given directory to store the settings files"),
        ("", "name of file to edit")
    ]
    appinfo = AppInfo.makeAppInfo(sys.argv,
                                  "Mercurial Histedit Editor",
                                  "",
                                  "Editor for the Mercurial histedit command",
                                  options)
    res = Startup.simpleAppStartup(sys.argv,
                                   appinfo,
                                   createMainWidget)
    sys.exit(res)

if __name__ == '__main__':
    main()
