# This file is part of Gajim.
#
# Gajim 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.
#
# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.

import sys
import logging
from functools import partial

from gi.repository import Gdk
from gi.repository import GObject

from gajim.plugins import GajimPlugin
from gajim.plugins.plugins_i18n import _

from gajim.common.dbus.music_track import MusicTrackListener

from now_listen.gtk.config import NowListenConfigDialog


log = logging.getLogger('gajim.p.now_listen')


class NowListenPlugin(GajimPlugin):
    def init(self):
        # pylint: disable=attribute-defined-outside-init
        self.description = _('Copy tune info of playing music to conversation '
                             'input box at cursor position (Alt + N)')
        self.config_dialog = partial(NowListenConfigDialog, self)
        self.gui_extension_points = {'chat_control_base':
                                     (self._on_connect_chat_control,
                                      self._on_disconnect_chat_control)}

        self.config_default_values = {
            'format_string':
                (_('Now listening to: "%title" by %artist'), ''),
        }

        if sys.platform != 'linux':
            self.available_text = _('Plugin only available for Linux')
            self.activatable = False

        self._event_ids = {}

    def _on_connect_chat_control(self, control):
        signal_id = control.msg_textview.connect('key-press-event',
                                                 self._on_insert)
        self._event_ids[control.control_id] = signal_id

    def _on_disconnect_chat_control(self, control):
        signal_id = self._event_ids.pop(control.control_id)
        if GObject.signal_handler_is_connected(control.msg_textview, signal_id):
            control.msg_textview.disconnect(signal_id)

    def _get_tune_string(self, info):
        format_string = self.config['format_string']
        tune_string = format_string.\
            replace('%artist', info.artist or '').\
            replace('%title', info.title or '')
        return tune_string

    def _on_insert(self, textview, event):
        # Insert text to message input box, at cursor position
        if event.keyval != Gdk.KEY_n:
            return
        if not event.state & Gdk.ModifierType.MOD1_MASK:  # ALT+N
            return

        info = MusicTrackListener.get().current_tune
        if info is None:
            log.info('No current tune available')
            return

        tune_string = self._get_tune_string(info)

        textview.get_buffer().insert_at_cursor(tune_string)
        textview.grab_focus()
        return True