# -*- coding: utf-8 -*-
import time
from django.http import HttpResponse
from django.template.loader import render_to_string
from django.utils import simplejson
from django.utils.translation import ugettext as _
from django.core.urlresolvers import reverse
from django.conf.urls.defaults import include
from django.contrib.auth.decorators import login_required
from mailng.admin.models import Mailbox
from mailng.lib import events, parameters
from mailng.lib import _render
from imap_listing import *
from forms import *
from templatetags.webextras import *

mbc = None

def init():
    events.register("UserMenuDisplay", menu)
    events.register("UserLogin", userlogin)
    parameters.register("webmail", "IMAP_SERVER", "string", "127.0.0.1",
                        help=_("Address of your IMAP server"))
    parameters.register("webmail", "SMTP_SERVER", "string", "127.0.0.1",
                        help=_("Address of your SMTP server"))

def urls():
    return (r'^mailng/webmail/',
            include('mailng.extensions.webmail.urls'))

def menu(**kwargs):
    if kwargs["target"] != "user_menu_box":
        return []
    return [
        {"name" : _("Webmail"),
         "url" : reverse(folder),
         "img" : "/static/pics/webmail.png"}
        ]

def userlogin(**kwargs):
    kwargs["request"].session["password"] = kwargs["password"]

def folder_ajax(request, name, pageid, menu=False):
    lst = ImapListing(request.user.username, request.session["password"],
                      reverse(folder, args=[name]), folder=name)
    page = lst.paginator.getpage(pageid)
    if page:
        content = lst.fetch(request, page.id_start, page.id_stop)
        navbar = lst.render_navbar(page)
    else:
        content = "Empty folder"
        navbar = ""
    ctx = {"status" : "ok", "listing" : content, "navbar" : navbar}
    if menu or "menu" in request.GET.keys():
        from templatetags.webextras import listing_menu
        ctx["menu"] = listing_menu("", request.user.get_all_permissions())
    return HttpResponse(simplejson.dumps(ctx), mimetype="application/json")

@login_required
def folder(request, name=None):
    if not name:
        name = "INBOX"
    pageid = request.GET.has_key("page") and int(request.GET["page"]) or 1
    request.session["folder"] = name
    request.session["page"] = pageid
    if "mode" in request.GET.keys() and request.GET["mode"] == "ajax":
        return folder_ajax(request, name, pageid)
    lst = ImapListing(request.user.username, request.session["password"],
                      reverse(folder, args=[name]), folder=name)
    return lst.render(request, pageid=int(pageid))

def fetchmail(request, folder, mail_id, all=False):
    global mbc
    if not mbc:
        mbc = IMAPconnector(parameters.get("webmail", "IMAP_SERVER"), 143)
        mbc.login(request.user.username, request.session["password"])
    res = mbc.fetch(start=mail_id, folder=folder, all=all)
    if len(res):
        return res[0]
    return None

@login_required
def viewmail(request, folder, mail_id=None):
    header = fetchmail(request, folder, mail_id)
    if header:
        from templatetags.webextras import viewm_menu
        menu = viewm_menu("", request.session["folder"], mail_id, 
                          request.session["page"],
                          request.user.get_all_permissions())
        folder, imapid = header["imapid"].split("/")
        mailcontent = render_to_string("webmail/viewmail.html", {
                "header" : header, "folder" : folder, "imapid" : imapid
                })
        ctx = {"status" : "ok", "menu" : menu, "listing" : mailcontent}
        return HttpResponse(simplejson.dumps(ctx), mimetype="application/json")

@login_required
def getmailcontent(request, folder, mail_id):
    from mailng.lib.email_listing import Email

    msg = fetchmail(request, folder, mail_id, True)
    if "class" in msg.keys() and msg["class"] == "unseen":
        global mbc
        mbc.msgseen(msg["imapid"])

    email = Email(msg, mode="html", links="1")
    return email.render(request)

@login_required
def compose(request):
    if request.method == "POST":
        form = ComposeMailForm(request.POST)
        if form.is_valid():
            from email.mime.text import MIMEText
            import smtplib

            msg = MIMEText(request.POST["id_body"].encode("utf-8"), 
                           _charset="utf-8")
            msg["Subject"] = request.POST["subject"]
            msg["From"] = request.POST["from_"]
            msg["to"] = request.POST["to"]
            s = smtplib.SMTP(parameters.get("webmail", "SMTP_SERVER"))
            s.sendmail(msg['From'], [msg['To']], msg.as_string())
            s.quit()
            return folder_ajax(request, request.session["folder"],
                               request.session["page"], True)

    form = ComposeMailForm()
    form.fields["from_"].initial = request.user.username
    menu = compose_menu("", request.session["folder"], request.session["page"], 
                        request.user.get_all_permissions())
    content = render_to_string("webmail/compose.html", {
            "form" : form
            })
    ctx = {"status" : "ok", "menu" : menu, "listing" : content}
    return HttpResponse(simplejson.dumps(ctx), mimetype="application/json")