# coding: utf-8

"""
Graphical statistics about emails traffic using RRDtool

This module provides support to retrieve statistics from postfix log :
sent, received, bounced, rejected

"""
from django.core.urlresolvers import reverse
from django.utils.translation import ugettext as _, ugettext_lazy
from django.conf.urls.defaults import *
from modoboa.lib import events, parameters
from modoboa.extensions import ModoExtension, exts_pool

class Stats(ModoExtension):
    name = "stats"
    label = "Statistics"
    version = "1.0"
    description = ugettext_lazy("Graphical statistics about emails traffic using RRDtool")
    needs_media = True

    def load(self):
        parameters.register_admin("LOGFILE", type="string", 
                                  deflt="/var/log/mail.log",
                                  help=ugettext_lazy("Path to log file used to collect statistics"))
        parameters.register_admin("RRD_ROOTDIR", type="string", 
                                  deflt="/tmp/modoboa",
                                  help=ugettext_lazy("Path to directory where RRD files are stored"))
        parameters.register_admin("IMG_ROOTDIR", type="string", 
                                  deflt="/tmp/modoboa",
                                  help=ugettext_lazy("Path to directory where PNG files are stored"))

    def destroy(self):
        events.unregister("AdminMenuDisplay", menu)

exts_pool.register_extension(Stats)

@events.observe("UserMenuDisplay")
def menu(target, user):
    if target != "top_menu" or user.group == "SimpleUsers":
        return []
    return [
        {"name"  : "stats",
         "label" : _("Statistics"),
         "url" : reverse('fullindex')}
        ]