# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4

###############################################################################
# ScribeEngine - Open Source Blog Software                                    #
# --------------------------------------------------------------------------- #
# Copyright (c) 2010 Raoul Snyman                                             #
# --------------------------------------------------------------------------- #
# 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; version 2 of the License.                              #
#                                                                             #
# 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, write to the Free Software Foundation, Inc., 59  #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
###############################################################################

"""
Helper functions

Consists of functions to typically be used within templates, but also
available to Controllers. This module is available to both as 'h'.
"""

from routes import url_for
from webhelpers.html import escape, HTML, literal, url_escape
from webhelpers.date import distance_of_time_in_words
from pylons import session
from pylons.controllers.util import redirect_to

class Flash(object):
    def set_message(self, message_text, message_type, message_head=None):
        session[u'flash.text'] = message_text
        session[u'flash.type'] = message_type
        session[u'flash.head'] = message_head
        session.save()

    def has_message(self):
        return session.get(u'flash.text')

    def has_header(self):
        return session.get(u'flash.head')

    def get_message_text(self):
        message_text = session.pop(u'flash.text', None)
        if not message_text:
            return None
        session.save()
        return message_text

    def get_message_type(self):
        message_type = session.pop(u'flash.type', None)
        if not message_type:
            return None
        session.save()
        return message_type


def teaser(text, url):
    position = text.find(u'</p>')
    if position > 0:
        return text[:position + 4]
    elif len(text) > 300:
        text = text[:297]
        position = len(text) - 1
        while position > 0 and text[position] not in [u'<', u'>']:
            position -= 1
        if position != 0 and text[position + 1] == u'/':
            position -= 1
            while position > 0 and text[position] not in [u'<']:
                position -= 1
        if position != 0 and text[position] == u'<':
            text = text[:position]
    return text

def url_for_post(post):
    #TODO: this is hard coded.
    return url_for(
        controller='blog',
        action='view',
        year=post.created.strftime('%Y'),
        month=post.created.strftime('%m'),
        day=post.created.strftime('%d'),
        url=post.url
        )

flash = Flash()