# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
# se veut agnostique au réseau considéré, de manière à être installable en
# quelques clics.
#
# Copyright © 2017  Gabriel Détraz
# Copyright © 2017  Goulven Kermarec
# Copyright © 2017  Augustin Lemesle
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# App de gestion des statistiques pour re2o
# Gabriel Détraz
# Gplv2
from django.http import HttpResponse
from django.shortcuts import render, redirect
from django.shortcuts import get_object_or_404
from django.template.context_processors import csrf
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.template import Context, RequestContext, loader
from django.contrib import messages
from django.contrib.auth.decorators import login_required, permission_required
from django.db.models import ProtectedError
from django.forms import ValidationError
from django.db import transaction
from django.db.models import Count

from reversion.models import Revision
from reversion.models import Version

from med.settings import PAGINATION_NUMBER as pagination_number

from django.utils import timezone

def form(ctx, template, request):
    c = ctx
    c.update(csrf(request))
    return render(request, template, c)

@login_required
@permission_required('perm')
def index(request):
    revisions = Revision.objects.all().order_by('date_created').reverse().select_related('user').prefetch_related('version_set__object')
    paginator = Paginator(revisions, pagination_number)
    page = request.GET.get('page')
    try:
        revisions = paginator.page(page)
    except PageNotAnInteger:
        # If page is not an integer, deliver first page.
        revisions = paginator.page(1)
    except EmptyPage:
     # If page is out of range (e.g. 9999), deliver last page of results.
        revisions = paginator.page(paginator.num_pages)
    return render(request, 'logs/index.html', {'revisions_list': revisions})

@login_required
@permission_required('bureau')
def revert_action(request, revision_id):
    """ Annule l'action en question """
    try:
        revision = Revision.objects.get(id=revision_id)
    except Revision.DoesNotExist:
        messages.error(request, u"Revision inexistante" )
    if request.method == "POST":
        revision.revert()
        messages.success(request, "L'action a été supprimée")
        return redirect("/logs/")
    return form({'objet': revision, 'objet_name': revision.__class__.__name__ }, 'logs/delete.html', request)