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import django.utils.simplejson as simplejson

from django.http import HttpResponse, HttpResponseRedirect
from django.template import RequestContext, loader
from django.conf import settings
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger, InvalidPage
from django.contrib.auth.decorators import (login_required,
                                            permission_required,
                                            user_passes_test)

from hyperkitty.models import Rating, Tag
from hyperkitty.lib.mockup import *
from forms import *
from hyperkitty.utils import log

from hyperkitty.lib import ThreadSafeStorePool


def thread_index (request, mlist_fqdn, threadid):
    ''' Displays all the email for a given thread identifier '''
    list_name = mlist_fqdn.split('@')[0]

    search_form = SearchForm(auto_id=False)
    t = loader.get_template('thread.html')
    STORE = ThreadSafeStorePool().get()
    threads = STORE.get_thread(mlist_fqdn, threadid)
    #prev_thread = mongo.get_thread_name(list_name, int(threadid) - 1)
    prev_thread = []
    if len(prev_thread) > 30:
        prev_thread = '%s...' % prev_thread[:31]
    #next_thread = mongo.get_thread_name(list_name, int(threadid) + 1)
    next_thread = []
    if len(next_thread) > 30:
        next_thread = '%s...' % next_thread[:31]

    participants = {}
    cnt = 0

    for message in threads:
        # @TODO: Move this logic inside KittyStore?
        message.sender_email = message.sender_email.strip()

        # Extract all the votes for this message
        try:
            votes = Rating.objects.filter(messageid=message.message_id)
        except Rating.DoesNotExist:
            votes = {}

        likes = 0
        dislikes = 0

        for vote in votes:
            if vote.vote == 1:
                likes = likes + 1
            elif vote.vote == -1:
                dislikes = dislikes + 1
            else:
                pass

        message.votes = votes
        message.likes = likes
        message.dislikes = dislikes

        # Statistics on how many participants and threads this month
        participants[message.sender_name] = {'email': message.sender_email}
        cnt = cnt + 1

    archives_length = STORE.get_archives_length(mlist_fqdn)
    from_url = '/thread/%s/%s/' % (mlist_fqdn, threadid)
    tag_form = AddTagForm(initial={'from_url' : from_url})

    try:
        tags = Tag.objects.filter(threadid=threadid)
    except Tag.DoesNotExist:
        tags = {}

    c = RequestContext(request, {
        'list_name' : list_name,
        'threadid' : threadid,
        'tags' : tags,
        'list_address': mlist_fqdn,
        'search_form': search_form,
        'addtag_form': tag_form,
        'month': 'Thread',
        'participants': participants,
        'answers': cnt,
        'first_mail': threads[0],
        'threads': threads[1:],
        'next_thread': next_thread,
        'next_thread_id': 0,
        'prev_thread': prev_thread,
        'prev_thread_id': 0,
        'archives_length': archives_length,
    })
    return HttpResponse(t.render(c))


@login_required
def add_tag(request, mlist_fqdn, email_id):
    """ Add a tag to a given thread. """

    if request.method == 'POST':
        form = AddTagForm(request.POST)
        if form.is_valid():
            print "Adding tag..."

            tag = form.data['tag']

            try:
                tag_obj = Tag.objects.get(threadid=email_id, list_address=mlist_fqdn, tag=tag)
            except Tag.DoesNotExist:
                tag_obj = Tag(list_address=mlist_fqdn, threadid=email_id, tag=tag) 

            tag_obj.save()
            response_dict = { }
        else:
            response_dict = {'error' : 'Error adding tag, enter valid data' }

    return HttpResponse(simplejson.dumps(response_dict), mimetype='application/javascript')