# Copyright (C) 2018-2021 by BDE ENS Paris-Saclay # SPDX-License-Identifier: GPL-3.0-or-later 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 from django.db import transaction from django.db.models import F, Q from django.http import HttpResponse from django.urls import reverse_lazy from django.utils import timezone from django.utils.decorators import method_decorator from django.utils.translation import gettext_lazy as _ from django.views import View from django.views.decorators.cache import cache_page 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(), ) @transaction.atomic 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): return super().get_queryset().distinct() 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.user, Activity, "view")), prefix='upcoming-', ) started_activities = Activity.objects\ .filter(PermissionBackend.filter_queryset(self.request.user, Activity, "view"))\ .filter(open=True, valid=True).all() 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.user, Guest, "view"))) 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.user, Activity, "view"))\ .get(pk=self.kwargs["pk"]) form.fields["inviter"].initial = self.request.user.note return form @transaction.atomic def form_valid(self, form): form.instance.activity = Activity.objects\ .filter(PermissionBackend.filter_queryset(self.request.user, Activity, "view")).get(pk=self.kwargs["pk"]) 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. """ 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.user, "activity.add_entry", sample_entry): 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.user, Guest, "view"))\ .order_by('last_name', 'first_name').distinct() 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( 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)) ) else: guest_qs = guest_qs.none() return guest_qs 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.user, Alias, "view")) if "search" in self.request.GET and self.request.GET["search"]: pattern = self.request.GET["search"] note_qs = note_qs.filter( 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)) ) else: note_qs = note_qs.none() # 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] 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.user, Activity, "view"))\ .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.user, Activity, "view")).distinct().all() context["activities_open"] = [a for a in activities_open if PermissionBackend.check_perm(self.request.user, "activity.add_entry", Entry(activity=a, note=self.request.user.note,))] return context # Cache for 1 hour @method_decorator(cache_page(60 * 60), name='dispatch') 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")