#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2008-2016  Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>

# 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/>.

# See the file COPYING for details.

"""
Actions available in the main interface
"""
from django.conf import settings
from django.core.urlresolvers import reverse, NoReverseMatch
from django.utils.translation import ugettext_lazy as _

from chimere.models import Page, Area


class Action:
    def __init__(self, id, path, label, extra_url_args=[]):
        self.id, self.path, self.label = id, path, label
        self.extra_url_args, self.url = extra_url_args, None

    def update_url(self, area_name):
        try:
            self.url = reverse(
                self.path,
                args=[area_name + '/' if area_name else '']
                + self.extra_url_args)
        except NoReverseMatch:
            # backward url management
            self.url = reverse(
                self.path,
                args=[area_name if area_name else ''] + self.extra_url_args)

default_actions = [
    (Action('view', settings.MAIN_INDEX, _('View')), []),
    (Action('contribute', 'chimere:edit', _('Contribute')),
     (Action('edit-marker', 'chimere:editmarker',
      _('Add a new point of interest')),
      Action('edit-route', 'chimere:editroute', _('Add a new route')),
      Action('edit-polygon', 'chimere:editpolygon', _('Add a new polygon'))),
     )]

if hasattr(settings, 'CHIMERE_DIRECTORY') and settings.CHIMERE_DIRECTORY:
    default_actions.append((Action('categories', 'chimere:category-directory',
                                   _('Directory')), []))

if settings.CHIMERE_FEEDS:
    default_actions.append((Action('rss', 'chimere:feeds-form',
                                   _('RSS feeds')), []))

if settings.EMAIL_HOST:
    default_actions.append((Action('contact', 'chimere:contact',
                                   _('Contact us')), []),)


def actions(area_name=''):
    acts = default_actions[:]
    area, q = None, None
    if area_name:
        q = Area.objects.filter(urn=area_name)
        if not q.count():
            q = Area.objects.filter(name=area_name)
    if not q or not q.count():
        q = Area.objects.filter(default=True)
    if q.count():
        area = q.all()[0]

    real_acts = []
    for act, childs in acts:
        real_childs = []
        for child_act in childs:
            if area:
                if (child_act.id == 'edit-marker'
                    and not area.allow_point_edition) \
                    or (child_act.id == 'edit-route'
                        and not area.allow_route_edition) \
                    or (child_act.id == 'edit-polygon'
                        and not area.allow_polygon_edition):
                    continue
            real_childs.append(child_act)
        if childs and not real_childs:
            continue
        act.update_url(area_name)
        for child_act in real_childs:
            child_act.update_url(area_name)
        real_acts.append((act, real_childs))
    for page in Page.objects.filter(available=True).order_by('order'):
        act = Action(page.mnemonic, 'chimere:extra_page', page.title,
                     [page.mnemonic])
        act.update_url(area_name)
        real_acts.append((act, []))
    return real_acts