#!/usr/bin/env python3
# -*- python-mode -*-
# -*- coding: UTF-8 -*-

## Copyright (C) 2012-2013  Daniel Pavel
##
## This program 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 2 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, write to the Free Software Foundation, Inc.,
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

from __future__ import absolute_import, division, print_function, unicode_literals

import importlib

from solaar import __version__, NAME
import solaar.i18n as _i18n
import solaar.cli as _cli

#
#
#


def _require(module, os_package, gi=None, gi_package=None, gi_version=None):
    try:
        if gi is not None:
            gi.require_version(gi_package, gi_version)
        return importlib.import_module(module)
    except (ImportError, ValueError):
        import sys
        sys.exit("%s: missing required system package %s" % (NAME, os_package))


prefer_symbolic_battery_icons = False


def _parse_arguments():
    import argparse
    arg_parser = argparse.ArgumentParser(prog=NAME.lower())
    arg_parser.add_argument(
        '-d',
        '--debug',
        action='count',
        default=0,
        help=
        'print logging messages, for debugging purposes (may be repeated for extra verbosity)'
    )
    arg_parser.add_argument(
        '-D',
        '--hidraw',
        action='store',
        dest='hidraw_path',
        metavar='PATH',
        help=
        'unifying receiver to use; the first detected receiver if unspecified. Example: /dev/hidraw2'
    )
    arg_parser.add_argument(
        '--restart-on-wake-up',
        action='store_true',
        help='restart Solaar on sleep wake-up (experimental)')
    arg_parser.add_argument(
        '-w',
        '--window',
        choices=('show', 'hide', 'only'),
        help='start with window showing / hidden / only (no tray icon)')
    arg_parser.add_argument('-b',
                            '--battery-icons',
                            choices=('regular', 'symbolic'),
                            help='prefer regular / symbolic icons')
    arg_parser.add_argument('-V',
                            '--version',
                            action='version',
                            version='%(prog)s ' + __version__)
    arg_parser.add_argument('--help-actions',
                            action='store_true',
                            help='print help for the optional actions')
    arg_parser.add_argument('action',
                            nargs=argparse.REMAINDER,
                            choices=_cli.actions,
                            help='optional actions to perform')

    args = arg_parser.parse_args()

    if args.help_actions:
        _cli.print_help()
        return

    if args.window is None:
        args.window = 'show'  # default behaviour is to show main window

    global prefer_symbolic_battery_icons
    prefer_symbolic_battery_icons = True if args.battery_icons == 'symbolic' else False

    import logging
    if args.debug > 0:
        log_level = logging.WARNING - 10 * args.debug
        log_format = '%(asctime)s,%(msecs)03d %(levelname)8s [%(threadName)s] %(name)s: %(message)s'
        logging.basicConfig(level=max(log_level, logging.DEBUG),
                            format=log_format,
                            datefmt='%H:%M:%S')
    else:
        logging.root.addHandler(logging.NullHandler())
        logging.root.setLevel(logging.ERROR)

    if not args.action:
        if logging.root.isEnabledFor(logging.INFO):
            logging.info("language %s (%s), translations path %s",
                         _i18n.language, _i18n.encoding, _i18n.path)

    return args


def main():
    _require('pyudev', 'python3-pyudev')

    # handle ^C in console
    import signal
    signal.signal(signal.SIGINT, signal.SIG_DFL)

    args = _parse_arguments()
    if not args: return
    if args.action:
        # if any argument, run comandline and exit
        return _cli.run(args.action, args.hidraw_path)

    gi = _require('gi', 'python3-gi or python3-gobject')
    _require('gi.repository.Gtk', 'gir1.2-gtk-3.0', gi, 'Gtk', '3.0')

    try:
        import solaar.ui as ui
        import solaar.listener as listener
        listener.setup_scanner(ui.status_changed, ui.error_dialog)

        import solaar.upower as _upower
        if args.restart_on_wake_up:
            _upower.watch(listener.start_all, listener.stop_all)
        else:
            _upower.watch(lambda: listener.ping_all(True))

        # main UI event loop
        ui.run_loop(listener.start_all, listener.stop_all,
                    args.window != 'only', args.window != 'hide')
    except Exception as e:
        import sys
        from traceback import format_exc
        sys.exit('%s: error: %s' % (NAME.lower(), format_exc()))


if __name__ == '__main__':
    main()