# w.c.s. - web application for online forms
# Copyright (C) 2005-2010  Entr'ouvert
#
# 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 2 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/>.

from quixote import redirect
from quixote.directory import Directory
from quixote.html import TemplateIO, htmltext

from wcs.qommon import _, N_
from wcs.qommon import misc
from wcs.categories import Category
from wcs.qommon.form import *
from wcs.qommon.backoffice.menu import html_top
from wcs.qommon.admin.menu import command_icon, error_page
import wcs.admin.categories

class CategoryUI:
    def __init__(self, category):
        self.category = category
        if self.category is None:
            self.category = Category()

    def get_form(self):
        form = Form(enctype='multipart/form-data')
        form.add(StringWidget, 'name', title = _('Category Name'), required = True, size=30,
                value = self.category.name)
        form.add(TextWidget, 'description', title = _('Description'), cols = 80, rows = 10,
                value = self.category.description)

        homepage_redirect_url = get_cfg('misc', {}).get('homepage-redirect-url')
        if not homepage_redirect_url:
            form.add(SingleSelectWidget, 'homepage_position',
                        title=_('Position on homepage'),
                        value=self.category.get_homepage_position(),
                        options = [('1st', _('First Column')),
                                   ('2nd', _('Second Column')),
                                   ('side', _('Sidebar')),
                                   ('none', _('None'))])
            form.add(IntWidget, 'limit',
                        title=_('Limit number of items displayed on homepage'),
                        value=self.category.get_limit())

        form.add(StringWidget, 'redirect_url', size=32,
                title=_('URL Redirection'),
                hint=_('If set, redirect the site category page to the given URL.'),
                value=self.category.redirect_url)

        form.add_submit('submit', _('Submit'))
        form.add_submit('cancel', _('Cancel'))
        return form

    def submit_form(self, form):
        if self.category.id:
            self.category.name = form.get_widget('name').parse()
            category = self.category
        else:
            category = Category(name = form.get_widget('name').parse())

        name = form.get_widget('name').parse()
        category_names = [x.name for x in Category.select() if x.id != category.id]
        if name in category_names:
            form.get_widget('name').set_error(_('This name is already used'))
            raise ValueError()

        category.description = form.get_widget('description').parse()
        category.redirect_url = form.get_widget('redirect_url').parse()

        homepage_redirect_url = get_cfg('misc', {}).get('homepage-redirect-url')
        if not homepage_redirect_url:
            category.homepage_position = form.get_widget('homepage_position').parse()
            category.limit = form.get_widget('limit').parse()

        category.store()



class CategoryPage(wcs.admin.categories.CategoryPage):
    def __init__(self, component):
        self.category = Category.get(component)
        self.category_ui = CategoryUI(self.category)
        get_response().breadcrumb.append((component + '/', self.category.name))


class CategoriesDirectory(wcs.admin.categories.CategoriesDirectory):
    label = N_('Categories')

    def new(self):
        get_response().breadcrumb.append( ('new', _('New')) )
        category_ui = CategoryUI(None)
        form = category_ui.get_form()
        if form.get_widget('cancel').parse():
            return redirect('.')

        if form.is_submitted() and not form.has_errors():
            try:
                category_ui.submit_form(form)
            except ValueError:
                pass
            else:
                return redirect('.')

        html_top('categories', title = _('New Category'))
        r = TemplateIO(html=True)
        r += htmltext('<h2>%s</h2>') % _('New Category')
        r += form.render()
        return r.getvalue()

    def _q_lookup(self, component):
        return CategoryPage(component)