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

# Copyright (c) 2009, 2010 Efrim <efrim@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 sys

from os import(access, W_OK)
from os.path import (dirname, isfile, join, basename, abspath)

from lib.mpdclass import MPDClass
from lib.startop import StartOpt

NAME = 'mtopls'
VERSION = '0.1'
USAGE = 'USAGE:  %prog [--help] | /path/to/the/playlist/file/'

class MtoPls(StartOpt, MPDClass):
    """
    """
    script_info = dict({
        'version': VERSION,
        'prog_name': NAME,
        'description': 'Save currently played track into your playlists',
        'usage': USAGE,
        })

    def __init__(self):
        """"""
        StartOpt.__init__(self, self.__class__.script_info, [])
        MPDClass.__init__(self)
        self.playlist = None
        self._run()

    def _get_opt(self):
        """"""
        if len(self.cli_args) != 1:
            self.parser.error('need at least a playlist file name!')
        self.playlist = self.cli_args[0]
        if (isfile(self.playlist) and
                access(self.playlist, W_OK)):
            return
        if not access(dirname(self.playlist), W_OK):
            self.parser.error('not writable: %s' % dirname(self.playlist))

    def _check_dupes(self):
        """Controls the file is not already in the playlist"""
        fd = open(self.playlist)
        lines = fd.readlines()
        fd.close()
        if self.current_song.get('file') + '\n' in lines:
            print 'File already in the playlist.'
            sys.exit(0)

    def _write(self):
        """"""
        if not isfile(self.playlist):
            # TODO: add M3U header
            print >> sys.stdout, ('Create new playlist: %s' % self.playlist)
            open(self.playlist, 'a').close()
        else:
            self._check_dupes()
        fd = open(self.playlist, 'a')
        fd.write(self.current_song.get('file') + '\n')
        fd.close()

    def _run(self):
        """"""
        print 'Connecting %s:%i' % (self.cli_options.host, self.cli_options.port)
        self.mpdConnect()
        self.current_song = self.client.currentsong()
        self.client.disconnect()
        self._get_opt()
        print 'Will try to add "%s" to "%s"' % (
                basename(self.current_song.get('file')),
                self.playlist)
        self._write()
        print 'Done...'
        sys.exit(0)


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

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