nk20/apps/activity/views.py

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# Copyright (C) 2018-2021 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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from hashlib import md5
from django.conf import settings
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.contenttypes.models import ContentType
from django.core.exceptions import PermissionDenied
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from django.db import transaction
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from django.db.models import F, Q
from django.http import HttpResponse
from django.urls import reverse_lazy
from django.utils import timezone
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from django.utils.decorators import method_decorator
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from django.utils.translation import gettext_lazy as _
from django.views import View
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from django.views.decorators.cache import cache_page
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from django.views.generic import DetailView, TemplateView, UpdateView
from django_tables2.views import SingleTableView
from note.models import Alias, NoteSpecial, NoteUser
from permission.backends import PermissionBackend
from permission.views import ProtectQuerysetMixin, ProtectedCreateView
from .forms import ActivityForm, GuestForm
from .models import Activity, Entry, Guest
from .tables import ActivityTable, EntryTable, GuestTable
class ActivityCreateView(ProtectQuerysetMixin, ProtectedCreateView):
"""
View to create a new Activity
"""
model = Activity
form_class = ActivityForm
extra_context = {"title": _("Create new activity")}
def get_sample_object(self):
return Activity(
name="",
description="",
creater=self.request.user,
activity_type_id=1,
organizer_id=1,
attendees_club_id=1,
date_start=timezone.now(),
date_end=timezone.now(),
)
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@transaction.atomic
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def form_valid(self, form):
form.instance.creater = self.request.user
return super().form_valid(form)
def get_success_url(self, **kwargs):
self.object.refresh_from_db()
return reverse_lazy('activity:activity_detail', kwargs={"pk": self.object.pk})
class ActivityListView(ProtectQuerysetMixin, LoginRequiredMixin, SingleTableView):
"""
Displays all Activities, and classify if they are on-going or upcoming ones.
"""
model = Activity
table_class = ActivityTable
ordering = ('-date_start',)
extra_context = {"title": _("Activities")}
def get_queryset(self, **kwargs):
return super().get_queryset(**kwargs).distinct()
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def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
upcoming_activities = Activity.objects.filter(date_end__gt=timezone.now())
context['upcoming'] = ActivityTable(
data=upcoming_activities.filter(PermissionBackend.filter_queryset(self.request, Activity, "view")),
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prefix='upcoming-',
)
started_activities = self.get_queryset().filter(open=True, valid=True).distinct().all()
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context["started_activities"] = started_activities
return context
class ActivityDetailView(ProtectQuerysetMixin, LoginRequiredMixin, DetailView):
"""
Shows details about one activity. Add guest to context
"""
model = Activity
context_object_name = "activity"
extra_context = {"title": _("Activity detail")}
def get_context_data(self, **kwargs):
context = super().get_context_data()
table = GuestTable(data=Guest.objects.filter(activity=self.object)
.filter(PermissionBackend.filter_queryset(self.request, Guest, "view")))
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context["guests"] = table
context["activity_started"] = timezone.now() > timezone.localtime(self.object.date_start)
return context
class ActivityUpdateView(ProtectQuerysetMixin, LoginRequiredMixin, UpdateView):
"""
Updates one Activity
"""
model = Activity
form_class = ActivityForm
extra_context = {"title": _("Update activity")}
def get_success_url(self, **kwargs):
return reverse_lazy('activity:activity_detail', kwargs={"pk": self.kwargs["pk"]})
class ActivityInviteView(ProtectQuerysetMixin, ProtectedCreateView):
"""
Invite a Guest, The rules to invites someone are defined in `forms:activity.GuestForm`
"""
model = Guest
form_class = GuestForm
template_name = "activity/activity_form.html"
def get_sample_object(self):
""" Creates a standart Guest binds to the Activity"""
activity = Activity.objects.get(pk=self.kwargs["pk"])
return Guest(
activity=activity,
first_name="",
last_name="",
inviter=self.request.user.note,
)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
activity = context["form"].activity
context["title"] = _('Invite guest to the activity "{}"').format(activity.name)
return context
def get_form(self, form_class=None):
form = super().get_form(form_class)
form.activity = Activity.objects.filter(PermissionBackend.filter_queryset(self.request, Activity, "view"))\
.filter(pk=self.kwargs["pk"]).first()
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form.fields["inviter"].initial = self.request.user.note
return form
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@transaction.atomic
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def form_valid(self, form):
form.instance.activity = Activity.objects\
.filter(PermissionBackend.filter_queryset(self.request, Activity, "view")).get(pk=self.kwargs["pk"])
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return super().form_valid(form)
def get_success_url(self, **kwargs):
return reverse_lazy('activity:activity_detail', kwargs={"pk": self.kwargs["pk"]})
class ActivityEntryView(LoginRequiredMixin, TemplateView):
"""
Manages entry to an activity
"""
template_name = "activity/activity_entry.html"
def dispatch(self, request, *args, **kwargs):
"""
Don't display the entry interface if the user has no right to see it (no right to add an entry for itself),
it is closed or doesn't manage entries.
"""
if not self.request.user.is_authenticated:
return self.handle_no_permission()
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activity = Activity.objects.get(pk=self.kwargs["pk"])
sample_entry = Entry(activity=activity, note=self.request.user.note)
if not PermissionBackend.check_perm(self.request, "activity.add_entry", sample_entry):
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raise PermissionDenied(_("You are not allowed to display the entry interface for this activity."))
if not activity.activity_type.manage_entries:
raise PermissionDenied(_("This activity does not support activity entries."))
if not activity.open:
raise PermissionDenied(_("This activity is closed."))
return super().dispatch(request, *args, **kwargs)
def get_invited_guest(self, activity):
"""
Retrieves all Guests to the activity
"""
guest_qs = Guest.objects\
.annotate(balance=F("inviter__balance"), note_name=F("inviter__user__username"))\
.filter(activity=activity)\
.filter(PermissionBackend.filter_queryset(self.request, Guest, "view"))\
.order_by('last_name', 'first_name')
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if "search" in self.request.GET and self.request.GET["search"]:
pattern = self.request.GET["search"]
if pattern[0] != "^":
pattern = "^" + pattern
guest_qs = guest_qs.filter(
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Q(first_name__iregex=pattern)
| Q(last_name__iregex=pattern)
| Q(inviter__alias__name__iregex=pattern)
| Q(inviter__alias__normalized_name__iregex=Alias.normalize(pattern))
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)
else:
guest_qs = guest_qs.none()
return guest_qs.distinct()
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def get_invited_note(self, activity):
"""
Retrieves all Note that can attend the activity,
they need to have an up-to-date membership in the attendees_club.
"""
note_qs = Alias.objects.annotate(last_name=F("note__noteuser__user__last_name"),
first_name=F("note__noteuser__user__first_name"),
username=F("note__noteuser__user__username"),
note_name=F("name"),
balance=F("note__balance"))
# Keep only users that have a note
note_qs = note_qs.filter(note__noteuser__isnull=False)
# Keep only members
note_qs = note_qs.filter(
note__noteuser__user__memberships__club=activity.attendees_club,
note__noteuser__user__memberships__date_start__lte=timezone.now(),
note__noteuser__user__memberships__date_end__gte=timezone.now(),
)
# Filter with permission backend
note_qs = note_qs.filter(PermissionBackend.filter_queryset(self.request, Alias, "view"))
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if "search" in self.request.GET and self.request.GET["search"]:
pattern = self.request.GET["search"]
note_qs = note_qs.filter(
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Q(note__noteuser__user__first_name__iregex=pattern)
| Q(note__noteuser__user__last_name__iregex=pattern)
| Q(name__iregex=pattern)
| Q(normalized_name__iregex=Alias.normalize(pattern))
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)
else:
note_qs = note_qs.none()
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# SQLite doesn't support distinct fields. For compatibility reason (in dev mode), the note list will only
# have distinct aliases rather than distinct notes with a SQLite DB, but it can fill the result page.
# In production mode, please use PostgreSQL.
note_qs = note_qs.distinct('note__pk')[:20]\
if settings.DATABASES[note_qs.db]["ENGINE"] == 'django.db.backends.postgresql' else note_qs.distinct()[:20]
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return note_qs
def get_context_data(self, **kwargs):
"""
Query the list of Guest and Note to the activity and add information to makes entry with JS.
"""
context = super().get_context_data(**kwargs)
activity = Activity.objects.filter(PermissionBackend.filter_queryset(self.request, Activity, "view"))\
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.distinct().get(pk=self.kwargs["pk"])
context["activity"] = activity
matched = []
for guest in self.get_invited_guest(activity):
guest.type = "Invité"
matched.append(guest)
for note in self.get_invited_note(activity):
note.type = "Adhérent"
note.activity = activity
matched.append(note)
table = EntryTable(data=matched)
context["table"] = table
context["entries"] = Entry.objects.filter(activity=activity)
context["title"] = _('Entry for activity "{}"').format(activity.name)
context["noteuser_ctype"] = ContentType.objects.get_for_model(NoteUser).pk
context["notespecial_ctype"] = ContentType.objects.get_for_model(NoteSpecial).pk
activities_open = Activity.objects.filter(open=True).filter(
PermissionBackend.filter_queryset(self.request, Activity, "view")).distinct().all()
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context["activities_open"] = [a for a in activities_open
if PermissionBackend.check_perm(self.request,
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"activity.add_entry",
Entry(activity=a, note=self.request.user.note,))]
return context
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# Cache for 1 hour
@method_decorator(cache_page(60 * 60), name='dispatch')
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class CalendarView(View):
"""
Render an ICS calendar with all valid activities.
"""
def multilines(self, string, maxlength, offset=0):
newstring = string[:maxlength - offset]
string = string[maxlength - offset:]
while string:
newstring += "\r\n "
newstring += string[:maxlength - 1]
string = string[maxlength - 1:]
return newstring
def get(self, request, *args, **kwargs):
ics = """BEGIN:VCALENDAR
VERSION: 2.0
PRODID:Note Kfet 2020
X-WR-CALNAME:Kfet Calendar
NAME:Kfet Calendar
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
"""
for activity in Activity.objects.filter(valid=True).order_by("-date_start").all():
ics += f"""BEGIN:VEVENT
DTSTAMP:{"{:%Y%m%dT%H%M%S}".format(activity.date_start)}Z
UID:{md5((activity.name + "$" + str(activity.id) + str(activity.date_start)).encode("UTF-8")).hexdigest()}
SUMMARY;CHARSET=UTF-8:{self.multilines(activity.name, 75, 22)}
DTSTART;TZID=Europe/Berlin:{"{:%Y%m%dT%H%M%S}".format(activity.date_start)}
DTEND;TZID=Europe/Berlin:{"{:%Y%m%dT%H%M%S}".format(activity.date_end)}
LOCATION:{self.multilines(activity.location, 75, 9) if activity.location else "Kfet"}
DESCRIPTION;CHARSET=UTF-8:""" + self.multilines(activity.description.replace("\n", "\\n"), 75, 26) + """
-- {activity.organizer.name}
END:VEVENT
"""
ics += "END:VCALENDAR"
ics = ics.replace("\r", "").replace("\n", "\r\n")
return HttpResponse(ics, content_type="text/calendar; charset=UTF-8")