# -*- coding: utf-8 -*-
#Copyright (c) 2010-12, Walter Bender

# 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.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

from gi.repository import Gtk
from gi.repository import Gdk

from sugar3.activity import activity
from sugar3 import profile
from sugar3.graphics.toolbarbox import ToolbarBox
from sugar3.activity.widgets import ActivityToolbarButton
from sugar3.activity.widgets import StopButton
from sugar3.graphics.toolbarbox import ToolbarButton
from sugar3.graphics.icon import Icon
from sugar3.graphics.toolbutton import ToolButton
from sugar3.graphics.alert import NotifyAlert, Alert
from sugar3.graphics import style

from gettext import gettext as _

import logging
_logger = logging.getLogger('abacus-activity')

from abacus_window import Abacus, Custom, MAX_RODS, MAX_TOP, MAX_BOT
from toolbar_utils import separator_factory, radio_factory, label_factory, \
    button_factory, spin_factory


NAMES = {'suanpan': _('Suanpan'),
         'soroban': _('Soroban'),
         'decimal': _('Decimal'),
         'nepohualtzintzin': _('Nepohualtzintzin'),
         'hexadecimal': _('Hexadecimal'),
         'binary': _('Binary'),
         'schety': _('Schety'),
         # 'fraction': _('Fraction'),
         'caacupe': _('Caacupé'),
         'cuisenaire': _('Rods'),
         'custom': _('Custom')
         }


class AbacusActivity(activity.Activity):

    def __init__(self, handle):
        ''' Initiate activity. '''
        super(AbacusActivity, self).__init__(handle)

        self._setting_up = True
        self.bead_colors = profile.get_color().to_string().split(',')

        # no sharing
        self.max_participants = 1

        abacus_toolbar = Gtk.Toolbar()
        custom_toolbar = Gtk.Toolbar()
        edit_toolbar = Gtk.Toolbar()

        toolbox = ToolbarBox()

        activity_button = ActivityToolbarButton(self)
        toolbox.toolbar.insert(activity_button, 0)
        activity_button.show()
# Disabled but: The copy & paste not found.
#        edit_toolbar_button = ToolbarButton(label=_('Edit'),
#                                            page=edit_toolbar,
#                                            icon_name='toolbar-edit')
#        edit_toolbar_button.show()
#        toolbox.toolbar.insert(edit_toolbar_button, -1)
#        edit_toolbar_button.show()

        abacus_toolbar_button = ToolbarButton(
            page=abacus_toolbar,
            icon_name='abacus-list')
        abacus_toolbar.show()
        toolbox.toolbar.insert(abacus_toolbar_button, -1)
        abacus_toolbar_button.show()

        custom_toolbar_button = ToolbarButton(
            page=custom_toolbar,
            icon_name='view-source')
        custom_toolbar.show()
        toolbox.toolbar.insert(custom_toolbar_button, -1)
        custom_toolbar_button.show()

        separator_factory(toolbox.toolbar, False, True)

        button_factory('edit-delete', toolbox.toolbar,
                       self._reset_cb, tooltip=_('Reset'))

        separator_factory(toolbox.toolbar, False, True)

        self._label = label_factory(NAMES['suanpan'], toolbox.toolbar)

        separator_factory(toolbox.toolbar, True, False)

        stop_button = StopButton(self)
        stop_button.props.accelerator = _('<Ctrl>Q')
        toolbox.toolbar.insert(stop_button, -1)
        stop_button.show()

        self.set_toolbar_box(toolbox)
        toolbox.show()

        # TRANS: simple decimal abacus
        self.decimal = radio_factory('decimal', abacus_toolbar,
                                     self._radio_cb, cb_arg='decimal',
                                     tooltip=NAMES['decimal'],
                                     group=None)

        # TRANS: http://en.wikipedia.org/wiki/Soroban (Japanese abacus)
        self.japanese = radio_factory('soroban', abacus_toolbar,
                                      self._radio_cb, cb_arg='soroban',
                                      tooltip=_('Soroban'),
                                      group=self.decimal)

        # TRANS: http://en.wikipedia.org/wiki/Suanpan (Chinese abacus)
        self.chinese = radio_factory('suanpan', abacus_toolbar,
                                     self._radio_cb, cb_arg='suanpan',
                                     tooltip=NAMES['suanpan'],
                                     group=self.decimal)

        separator_factory(abacus_toolbar)

        # TRANS: http://en.wikipedia.org/wiki/Abacus#Native_American_abaci
        self.mayan = radio_factory('nepohualtzintzin', abacus_toolbar,
                                   self._radio_cb, cb_arg='nepohualtzintzin',
                                   tooltip=NAMES['nepohualtzintzin'],
                                   group=self.decimal)

        # TRANS: hexidecimal abacus
        self.hex = radio_factory('hexadecimal', abacus_toolbar,
                                 self._radio_cb, cb_arg='hexadecimal',
                                 tooltip=NAMES['hexadecimal'],
                                 group=self.decimal)

        # TRANS: binary abacus
        self.binary = radio_factory('binary', abacus_toolbar,
                                    self._radio_cb, cb_arg='binary',
                                    tooltip=NAMES['binary'],
                                    group=self.decimal)

        separator_factory(abacus_toolbar)

        # TRANS: http://en.wikipedia.org/wiki/Abacus#Russian_abacus
        self.russian = radio_factory('schety', abacus_toolbar,
                                     self._radio_cb, cb_arg='schety',
                                     tooltip=NAMES['schety'],
                                     group=self.decimal)

        # NOTE: GTK3 buttons seem to take up more space, so one button
        # had to go in order to prevent toolbar overflow...
        '''
        # TRANS: abacus for adding fractions
        self.fraction = radio_factory('fraction', abacus_toolbar,
                                      self._radio_cb, cb_arg='fraction',
                                      tooltip=NAMES['fraction'],
                                      group=self.decimal)
        '''

        # TRANS: Abacus invented by teachers in Caacupé, Paraguay
        self.caacupe = radio_factory('caacupe', abacus_toolbar,
                                     self._radio_cb, cb_arg='caacupe',
                                     tooltip=NAMES['caacupe'],
                                     group=self.decimal)

        separator_factory(abacus_toolbar)

        # TRANS: Cuisenaire Rods
        self.cuisenaire = radio_factory('cuisenaire', abacus_toolbar,
                                        self._radio_cb,
                                        cb_arg='cuisenaire',
                                        tooltip=NAMES['cuisenaire'],
                                        group=self.decimal)

        separator_factory(abacus_toolbar)

        self.custom = radio_factory('custom', abacus_toolbar,
                                    self._radio_cb,
                                    cb_arg='custom',
                                    tooltip=NAMES['custom'], group=self.decimal)

        preferences_button = ToolButton('preferences-system')
        preferences_button.set_tooltip(_('Custom'))
        custom_toolbar.insert(preferences_button, -1)
        preferences_button.palette_invoker.props.toggle_palette = True
        preferences_button.palette_invoker.props.lock_palette = True
        preferences_button.props.hide_tooltip_on_click = False
        preferences_button.show()

        self._palette = preferences_button.get_palette()
        button_box = Gtk.VBox()
        # TRANS: Number of rods on the abacus
        self._rods_spin = add_spinner_and_label(
            15, 1, MAX_RODS, _('Rods:'), self._rods_spin_cb, button_box)
        # TRANS: Number of beads in the top section of the abacus
        self._top_spin = add_spinner_and_label(
            2, 0, MAX_TOP, _('Top:'), self._top_spin_cb, button_box)
        # TRANS: Number of beads in the bottom section of the abacus
        self._bottom_spin = add_spinner_and_label(
            2, 0, MAX_BOT, _('Bottom:'), self._bottom_spin_cb, button_box)
        # TRANS: Scale factor between bottom and top beads
        self._value_spin = add_spinner_and_label(
            5, 1, MAX_BOT + 1, _('Factor:'), self._value_spin_cb, button_box)
        # TRANS: Scale factor between rods
        self._base_spin = add_spinner_and_label(
            10, 1, (MAX_TOP + 1) * MAX_BOT, _('Base:'), self._base_spin_cb,
            button_box)
        hbox = Gtk.HBox()
        hbox.pack_start(button_box, True, True, style.DEFAULT_SPACING)
        hbox.show_all()
        self._palette.set_content(hbox)

        separator_factory(custom_toolbar, False, False)

        self.custom_maker = button_factory('new-abacus', custom_toolbar,
                                           self._custom_cb,
                                           tooltip=_('Custom'))

#        button_factory('edit-copy', edit_toolbar, self._copy_cb,
#                       tooltip=_('Copy'), accelerator='<Ctrl>c')
#        button_factory('edit-paste', edit_toolbar, self._paste_cb,
#                       tooltip=_('Paste'), accelerator='<Ctrl>v')

        # start with abacus toolbar expanded
        abacus_toolbar_button.set_expanded(True)

        self.chinese.set_active(True)

        # Create a canvas
        canvas = Gtk.DrawingArea()
        canvas.set_size_request(Gdk.Screen.width(),
                                Gdk.Screen.height())
        self.set_canvas(canvas)
        canvas.show()
        self.show_all()

        # Initialize the canvas
        self.abacus = Abacus(canvas, self)

        self._setting_up = False

        # Read the current mode from the Journal
        if 'rods' in self.metadata:
            self._rods_spin.set_value(int(self.metadata['rods']))
        if 'top' in self.metadata:
            self._top_spin.set_value(int(self.metadata['top']))
        if 'bottom' in self.metadata:
            self._bottom_spin.set_value(int(self.metadata['bottom']))
        if 'factor' in self.metadata:
            self._value_spin.set_value(int(self.metadata['factor']))
        if 'base' in self.metadata:
            self._base_spin.set_value(int(self.metadata['base']))
        if 'abacus' in self.metadata:
            # Default is Chinese
            _logger.debug('restoring %s', self.metadata['abacus'])
            if self.metadata['abacus'] == 'soroban':
                self._select_abacus('soroban')
                self.japanese.set_active(True)
            elif self.metadata['abacus'] == 'schety':
                self._select_abacus('schety')
                self.russian.set_active(True)
            elif self.metadata['abacus'] == 'nepohualtzintzin':
                self._select_abacus('nepohualtzintzin')
                self.mayan.set_active(True)
            elif self.metadata['abacus'] == 'binary':
                self._select_abacus('binary')
                self.binary.set_active(True)
            elif self.metadata['abacus'] == 'hexadecimal':
                self._select_abacus('hexadecimal')
                self.hex.set_active(True)
            elif self.metadata['abacus'] == 'fraction':
                self._select_abacus('fraction')
                self.fraction.set_active(True)
            elif self.metadata['abacus'] == 'caacupe':
                self._select_abacus('caacupe')
                self.caacupe.set_active(True)
            elif self.metadata['abacus'] == 'cuisenaire':
                self._select_abacus('cuisenaire')
                self.cuisenaire.set_active(True)
            elif self.metadata['abacus'] == 'decimal':
                self._select_abacus('decimal')
                self.decimal.set_active(True)
            elif self.metadata['abacus'] == 'custom':
                self._select_abacus('custom')
                self.custom.set_active(True)
            if 'value' in self.metadata:
                _logger.debug('restoring value %s', self.metadata['value'])
                self.abacus.mode.set_value(self.metadata['value'])
                self.abacus.mode.label(self.abacus.generate_label())

    def _radio_cb(self, button, abacus):
        self._select_abacus(abacus)

    def _reset_cb(self, button=None):
        self.abacus.mode.reset_abacus()
        self.abacus.mode.label(self.abacus.generate_label())

    def _notify_new_abacus(self, prompt):
        ''' Loading a new abacus can be slooow, so alert the user. '''
        alert = NotifyAlert(3)
        alert.props.title = prompt
        alert.props.msg = _('A new abacus is loading.')

        def _notification_alert_response_cb(alert, response_id, self):
            self.remove_alert(alert)

        alert.connect('response', _notification_alert_response_cb, self)
        self.add_alert(alert)
        alert.show()

    def _select_abacus(self, abacus):
        ''' Notify the user of an expected delay and then... '''
        if not hasattr(self, 'abacus'):
            return
        if self._setting_up:
            return
        if self.abacus.mode.name == abacus:
            return
        self.alert = Alert()
        self.okicon = Icon(icon_name='dialog-ok')
        self.cancelicon = Icon(icon_name='dialog-cancel')
        self.alert.add_button(Gtk.ResponseType.OK, _('Ok'), self.okicon)
        self.alert.add_button(Gtk.ResponseType.CANCEL, _('Cancel'), self.cancelicon)
        self.alert.props.msg = _('Current progress is eliminated.')
        self.alert.props.title = _('¿Sure?')
        self.alert.connect('response', self._switch_modes, abacus)
        self.add_alert(self.alert)

    def _switch_modes(self, widget, response, abacus):
        ''' Display the selected abacus '''
        # Save current value
        value = int(float(self.abacus.mode.value()))
        # Remove alert
        self.remove_alert(widget)
        if response == Gtk.ResponseType.OK:
                if abacus == 'custom':
                    self._custom_cb()
                    self.abacus.mode = self.abacus.custom
                else:
                    self.abacus.select_abacus(abacus)

                self._notify_new_abacus(NAMES[abacus])
                self.abacus.mode.set_value_from_number(value)
                self.abacus.mode.label(self.abacus.generate_label())
                self._label.set_text(NAMES[abacus])
        else:
                pass

    def _rods_spin_cb(self, button=None):
        return

    def _top_spin_cb(self, button=None):
        return

    def _bottom_spin_cb(self, button=None):
        return

    def _value_spin_cb(self, button=None):
        return

    def _base_spin_cb(self, button=None):
        return

    def _custom_cb(self, button=None):
        ''' Display the custom abacus; hide the others '''
        value = float(self.abacus.mode.value(count_beads=False))
        self.abacus.mode.hide()
        if self.abacus.custom is not None:
            self.abacus.custom.hide()
        self.abacus.custom = Custom(self.abacus, self.abacus.bead_colors)
        self.abacus.custom.set_custom_parameters(
            rods=self._rods_spin.get_value_as_int(),
            top=self._top_spin.get_value_as_int(),
            bot=self._bottom_spin.get_value_as_int(),
            factor=self._value_spin.get_value_as_int(),
            base=self._base_spin.get_value_as_int())
        self.abacus.custom.create()
        self.abacus.custom.draw_rods_and_beads()
        self.abacus.custom.show()
        self.abacus.mode = self.abacus.custom
        self.custom.set_active(True)
        self._label.set_text(NAMES['custom'])

    def _copy_cb(self, arg=None):
        ''' Copy a number to the clipboard from the active abacus. '''
#        clipBoard = Gtk.Clipboard(Gdk.SELECTION_CLIPBOARD)
#        text = self.abacus.generate_label(sum_only=True)
#        if text is not None:
#            clipBoard.set_text(text, -1)
# FIXME!
        return

    def _paste_cb(self, arg=None):
        ''' Paste a number from the clipboard to the active abacus. '''
#        clipBoard = Gtk.Clipboard()
#        text = clipBoard.wait_for_text()
#        if text is not None:
#            try:
#                self.abacus.mode.set_value_from_number(float(text))
#            except ValueError, e:
#                _logger.debug(str(e))
#                return
#            self.abacus.mode.label(self.abacus.generate_label())
# FIXME !
        return

    def write_file(self, file_path):
        ''' Write the bead positions to the Journal '''
        _logger.debug('Saving current abacus to Journal: %s %s' % (
                       self.abacus.mode.name, self.abacus.mode.value(True)))
        self.metadata['abacus'] = self.abacus.mode.name
        self.metadata['value'] = self.abacus.mode.value(True)
        self.metadata['rods'] = str(self._rods_spin.get_value_as_int())
        self.metadata['top'] = str(self._top_spin.get_value_as_int())
        self.metadata['bottom'] = str(self._bottom_spin.get_value_as_int())
        self.metadata['factor'] = str(self._value_spin.get_value_as_int())
        self.metadata['base'] = str(self._base_spin.get_value_as_int())


def add_spinner_and_label(default_value, min_value, max_value,
                          tooltip, cb, box):
    ''' Add a spinner and a label to a box '''
    spinner_and_label = Gtk.HBox()
    spinner, item = spin_factory(default_value, min_value, max_value, cb, None)
    label = Gtk.Label(label=tooltip)
    label.set_justify(Gtk.Justification.LEFT)
    label.set_line_wrap(True)
    label.show()
    spinner_and_label.pack_start(label, expand=False, fill=False, padding=0)
    label = Gtk.Label(label=' ')
    label.show()
    spinner_and_label.pack_start(label, expand=True, fill=False, padding=0)
    spinner_and_label.pack_start(item, expand=False, fill=False, padding=0)
    box.pack_start(spinner_and_label, expand=False, fill=False, padding=5)
    spinner_and_label.show()
    return spinner