# -*- coding: utf-8 -*-

"""
Postfix auto-replies plugin.

This module provides a way to integrate Modoboa auto-reply
functionality into Postfix.

"""
from django.conf.urls.defaults import include
from django.core.urlresolvers import reverse
from django.utils.translation import ugettext as _
from modoboa.lib import events, parameters, static_url
from models import *

def infos():
    return {
        "name" : "Postfix autoreply",
        "version" : "1.0",
        "description" : _("Auto-reply (vacation) functionality using Postfix")
        }

def init():
    events.register("CreateDomain", onCreateDomain)
    events.register("DeleteDomain", onDeleteDomain)
    events.register("CreateMailbox", onCreateMailbox)
    events.register("DeleteMailbox", onDeleteMailbox)
    events.register("ModifyMailbox", onModifyMailbox)
    events.register("UserMenuDisplay", menu)

    parameters.register_admin("AUTOREPLIES_TIMEOUT", 
                              type="int", deflt=86400,
                              help=_("Timeout in seconds between two auto-replies to the same recipient"))

def destroy():
    events.unregister("CreateDomain", onCreateDomain)
    events.unregister("DeleteDomain", onDeleteDomain)
    events.unregister("CreateMailbox", onCreateMailbox)
    events.unregister("DeleteMailbox", onDeleteMailbox)
    events.unregister("ModifyMailbox", onModifyMailbox)
    events.unregister("UserMenuDisplay", menu)
    parameters.unregister_app("postfix_autoreply")

def urls(prefix):
    return (r'^%spostfix_autoreply/' % prefix,
            include('modoboa.extensions.postfix_autoreply.urls'))

def menu(**kwargs):
    import views

    if kwargs["target"] != "uprefs_menu":
        return []
    return [
        {"name" : "autoreply",
         "url" : reverse(views.autoreply),
         "img" : static_url("pics/auto-reply.png"),
         "class" : "boxed",
         "rel" : "{handler:'iframe',size:{x:440,y:400}}",
         "label" : _("Auto-reply message")}
        ]

def onCreateDomain(**kwargs):
    dom = kwargs["dom"]
    transport = Transport()
    transport.domain = "autoreply.%s" % dom.name
    transport.method = "autoreply:"
    transport.save()

def onDeleteDomain(**kwargs):
    dom = kwargs["dom"]
    trans = Transport.objects.get(domain="autoreply.%s" % dom.name)
    trans.delete()

def onCreateMailbox(**kwargs):
    mbox = kwargs["mbox"]
    alias = Alias()
    alias.full_address = mbox.full_address
    alias.autoreply_address = \
        "%s@autoreply.%s" % (mbox.full_address, mbox.domain.name)
    alias.save()

def onDeleteMailbox(**kwargs):
    mbox = kwargs["mbox"]
    try:
        alias = Alias.objects.get(full_address=mbox.full_address)
        alias.delete()
    except Alias.DoesNotExist:
        pass

def onModifyMailbox(**kwargs):
    mbox = kwargs["mbox"]
    oldmbox = kwargs["oldmbox"]
    if oldmbox.full_address == mbox.full_address:
        return
    alias = Alias.objects.get(full_address=oldmbox.full_address)
    alias.full_address = mbox.full_address
    alias.autoreply_address =  \
        "%s@autoreply.%s" % (mbox.full_address, mbox.domain.name)
    alias.save()