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

# Copyright (c) 2009,2010,2012,2019 kaliko <kaliko@azylum.org>
#
#   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 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 argparse
import sys

from os.path import basename

import musicpd

VERSION = '0.2'


class Crop(musicpd.MPDClient):
    script_info = dict({
        'prog': basename(__file__),
        'description': 'Keep <n> tracks before currently played, removed others. Default is to keep 6 tracks.',
        'epilog': 'Set MPD host/port in env. var'
    })

    def __init__(self):
        """"""
        musicpd.MPDClient.__init__(self)
        self.nb_tracks = 6
        self._get_args()
        self._run()

    def _get_args(self):
        """"""
        parser = argparse.ArgumentParser(**self.__class__.script_info)
        parser.add_argument('--version', action='version',
                            version='v%s' % VERSION)
        parser.add_argument('n', type=int, nargs='?',
                            help='how many titles to crop')
        args = parser.parse_args()
        if args.n:
            self.nb_tracks = args.n

    def _run(self):
        """"""
        self.connect()
        current_pos = int(self.currentsong().get('pos', 0))
        if current_pos <= self.nb_tracks:
            self.disconnect()
            sys.exit(0)
        print('Keeping %i tracks' % self.nb_tracks)
        while current_pos > self.nb_tracks:
            self.delete(0)
            current_pos = int(self.currentsong().get('pos', 0))
        self.disconnect()
        sys.exit(0)


# Script starts here
if __name__ == '__main__':
    try:
        Crop()
    except KeyboardInterrupt:
        sys.stdout.write('exit')

# VIM MODLINE
# vim: ai ts=4 sw=4 sts=4 expandtab