members: rejection of invitations

jdav_web/jdav_web/settings/components/texts.py

@@ -27,20 +27,37 @@ INVITE_TEXT = """Hallo {name},
 wir haben gute Neuigkeiten für dich. Es ist ein Platz in der Jugendgruppe {group_name} {group_link}freigeworden.
 Wir treffen uns jeden {weekday} von {start_time} bis {end_time} Uhr.
 
-Wir brauchen jetzt noch ein paar Informationen von dir und deine Anmeldebestätigung. Das kannst du alles über folgenden
-Link erledigen:
+Wir brauchen jetzt noch ein paar Informationen von dir und deine Anmeldebestätigung. Die lädst du hier herunter,
+lässt es von deinen Eltern ausfüllen, unterschreiben und lädst ein Foto davon in unserem Anmeldeformular hoch.
+Das kannst du alles über folgenden Link erledigen:
 
 {link}
 
 Du siehst dort auch die Daten, die du bei deiner Eintragung auf die Warteliste angegeben hast. Bitte
 überprüfe, ob die Daten noch stimmen und ändere sie bei Bedarf ab.
 
+Falls du zu dem obigen Termin keine Zeit hast oder dich ganz von der Warteliste abmelden möchtest,
+lehne bitte diese Einladung unter folgendem Link ab:
+
+{invitation_reject_link}
+
 Bei Fragen, wende dich gerne an %(RESPONSIBLE_MAIL)s.
 
 Viele Grüße
 Deine JDAV %(SEKTION)s""" % { 'SEKTION': SEKTION, 'RESPONSIBLE_MAIL': RESPONSIBLE_MAIL }
 
 
+LEAVE_WAITINGLIST_TEXT = """Hallo {name},
+
+du hast dich erfolgreich von der Warteliste abgemeldet. Falls du zu einem späteren
+Zeitpunkt wieder der Warteliste beitreten möchtest, kannst du das über unsere Webseite machen.
+
+Falls du dich nicht selbst abgemeldet hast, wende dich bitte umgehend an %(RESPONSIBLE_MAIL)s.
+
+Viele Grüße
+Deine JDAV %(SEKTION)s""" % { 'SEKTION': SEKTION, 'RESPONSIBLE_MAIL': RESPONSIBLE_MAIL }
+
+
 WAIT_CONFIRMATION_TEXT = """Hallo {name},
 
 leider können wir dir zur Zeit noch keinen Platz in einer Jugendgruppe anbieten. Da wir

jdav_web/mailer/mailutils.py

@@ -64,11 +64,14 @@ def get_echo_link(member):
     return prepend_base_url("/members/echo?key={}".format(key))
 
 
-def get_registration_link(waiter):
-    key = waiter.generate_registration_key()
+def get_registration_link(key):
     return prepend_base_url("/members/registration?key={}".format(key))
 
 
+def get_invitation_reject_link(key):
+    return prepend_base_url("/members/waitinglist/invitation/reject?key={}".format(key))
+
+
 def get_wait_confirmation_link(waiter):
     key = waiter.generate_wait_confirmation_key()
     return prepend_base_url("/members/waitinglist/confirm?key={}".format(key))

jdav_web/members/admin.py

@@ -36,7 +36,8 @@ from .models import (Member, Group, Freizeit, MemberNoteList, NewMemberOnList, K
                      MemberWaitingList, LJPProposal, Intervention, PermissionMember,
                      PermissionGroup, MemberTraining, TrainingCategory,
                      KlettertreffAttendee, ActivityCategory, EmergencyContact,
-                     annotate_activity_score, RegistrationPassword, MemberUnconfirmedProxy)
+                     annotate_activity_score, RegistrationPassword, MemberUnconfirmedProxy,
+                     InvitationToGroup)
 from finance.models import Statement, BillOnExcursionProxy
 from mailer.mailutils import send as send_mail, get_echo_link
 from django.conf import settings
@@ -414,16 +415,28 @@ class WaiterInviteForm(forms.Form):
                                    label=_('Group'))
 
 
+class InvitationToGroupAdmin(CommonAdminInlineMixin, admin.TabularInline):
+    model = InvitationToGroup
+    fields = ['group', 'date', 'status']
+    readonly_fields = ['group', 'date', 'status']
+    extra = 0
+    can_delete = False
+
+    def has_add_permission(self, request, obj=None):
+        return False
+
+
 class MemberWaitingListAdmin(CommonAdminMixin, admin.ModelAdmin):
     fields = ['prename', 'lastname', 'email', 'birth_date', 'gender', 'application_text',
-        'application_date', 'comments', 'invited_for_group',
+        'application_date', 'comments',
         'sent_reminders']
     list_display = ('name', 'birth_date', 'age', 'application_date', 'confirmed_mail',
                     'waiting_confirmed', 'sent_reminders')
     search_fields = ('prename', 'lastname', 'email')
     list_filter = ('confirmed_mail',)
     actions = ['ask_for_registration', 'ask_for_wait_confirmation']
-    readonly_fields= ['invited_for_group', 'application_date', 'sent_reminders']
+    inlines = [InvitationToGroupAdmin]
+    readonly_fields= ['application_date', 'sent_reminders']
 
     def has_add_permission(self, request, obj=None):
         return False

jdav_web/members/migrations/0021_group_invitations.py

@@ -0,0 +1,34 @@
+# Generated by Django 4.0.1 on 2024-11-17 21:32
+
+from django.db import migrations, models
+import django.db.models.deletion
+import members.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0020_alter_freizeit_options_freizeit_description_and_more'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='InvitationToGroup',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('date', models.DateField(auto_now=True, verbose_name='Invitation date')),
+                ('rejected', models.BooleanField(default=False, verbose_name='Invitation rejected')),
+                ('group', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='members.group', verbose_name='Group')),
+                ('waiter', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='members.memberwaitinglist', verbose_name='Waiter')),
+                ('key', models.CharField(default=members.models.gen_key, max_length=32)),
+            ],
+            options={
+                'verbose_name': 'Invitation to group',
+                'verbose_name_plural': 'Invitations to groups',
+            },
+        ),
+        migrations.RemoveField(
+            model_name='memberwaitinglist',
+            name='invited_for_group',
+        ),
+    ]

jdav_web/members/models.py

@@ -14,7 +14,8 @@ from django.contrib.contenttypes.models import ContentType
 from utils import RestrictedFileField
 import os
 from mailer.mailutils import send as send_mail, get_mail_confirmation_link,\
-    prepend_base_url, get_registration_link, get_wait_confirmation_link
+    prepend_base_url, get_registration_link, get_wait_confirmation_link,\
+    get_invitation_reject_link
 from django.contrib.auth.models import User
 from django.conf import settings
 from django.core.validators import MinValueValidator
@@ -689,6 +690,35 @@ class MemberUnconfirmedProxy(Member):
         return self.name
 
 
+def gen_key():
+    return uuid.uuid4().hex
+
+
+class InvitationToGroup(models.Model):
+    """An invitation of a waiter to a group."""
+    waiter = models.ForeignKey('MemberWaitingList', verbose_name=_('Waiter'), on_delete=models.CASCADE)
+    group = models.ForeignKey(Group, verbose_name=_('Group'), on_delete=models.CASCADE)
+    date = models.DateField(auto_now=True, verbose_name=_('Invitation date'))
+    rejected = models.BooleanField(verbose_name=_('Invitation rejected'), default=False)
+    key = models.CharField(max_length=32, default=gen_key)
+
+    class Meta:
+        verbose_name = _('Invitation to group')
+        verbose_name_plural = _('Invitations to groups')
+
+    def is_expired(self):
+        return self.date < (timezone.now() - timezone.timedelta(days=30)).date()
+
+    def status(self):
+        if self.rejected:
+            return _('Rejected')
+        elif self.is_expired():
+            return _('Expired')
+        else:
+            return _('Undecided')
+    status.short_description = _('Status')
+
+
 class MemberWaitingList(Person):
     """A participant on the waiting list"""
 
@@ -710,12 +740,6 @@ class MemberWaitingList(Person):
     registration_key = models.CharField(max_length=32, default="")
     registration_expire = models.DateTimeField(default=timezone.now)
 
-    invited_for_group = models.ForeignKey(Group,
-                                          null=True,
-                                          blank=True,
-                                          default=None,
-                                          verbose_name=_('Invited for group'),
-                                          on_delete=models.SET_NULL)
     class Meta(CommonModel.Meta):
         verbose_name = _('Waiter')
         verbose_name_plural = _('Waiters')
@@ -783,14 +807,13 @@ class MemberWaitingList(Person):
         self.save()
         return self.wait_confirmation_key
 
-    def generate_registration_key(self):
-        self.registration_key = uuid.uuid4().hex
-        self.registration_expire = timezone.now() + timezone.timedelta(days=30)
-        self.save()
-        return self.registration_key
-
     def may_register(self, key):
-        return self.registration_key == key and timezone.now() < self.registration_expire
+        print("may_register", key)
+        try:
+            invitation = InvitationToGroup.objects.get(key=key)
+            return self.pk == invitation.waiter.pk and timezone.now() < invitation.date + timezone.timedelta(days=30)
+        except InvitationToGroup.DoesNotExist:
+            return False
 
     def invite_to_group(self, group):
         if group.show_website:
@@ -801,6 +824,8 @@ class MemberWaitingList(Person):
         weekday = WEEKDAYS[group.weekday][1] if group.weekday != None else WEEKDAYS[0][1]
         start_time = group.start_time.strftime('%H:%M') if group.start_time != None else "14:00"
         end_time = group.end_time.strftime('%H:%M') if group.end_time != None else "16:00"
+        invitation = InvitationToGroup(group=group, waiter=self)
+        invitation.save()
         self.send_mail(_("Invitation to trial group meeting"),
             settings.INVITE_TEXT.format(name=self.prename,
             weekday=weekday,
@@ -808,7 +833,14 @@ class MemberWaitingList(Person):
             end_time=end_time,
             group_name=group.name,
             group_link=group_link,
-            link=get_registration_link(self)))
+            link=get_registration_link(invitation.key),
+            invitation_reject_link=get_invitation_reject_link(invitation.key)))
+
+    def unregister(self):
+        """Delete the waiter and inform them about the deletion via email."""
+        self.send_mail(_("Unregistered from waiting list"),
+                       settings.LEAVE_WAITINGLIST_TEXT.format(name=self.prename))
+        self.delete()
 
 
 class NewMemberOnList(CommonModel):

jdav_web/members/templates/members/reject_invalid.html

@@ -0,0 +1,15 @@
+{% extends "members/base.html" %}
+{% load i18n %}
+{% load static %}
+
+{% block title %}
+{% trans "Reject invitation" %}
+{% endblock %}
+
+{% block content %}
+
+<h1>{% trans "Reject invitation" %}</h1>
+
+<p>{% trans "This invitation is invalid or expired." %}</p>
+
+{% endblock %}

jdav_web/members/templates/members/reject_invitation.html

@@ -0,0 +1,31 @@
+{% extends "members/base.html" %}
+{% load i18n %}
+{% load static %}
+
+{% block title %}
+{% trans "Reject invitation" %}
+{% endblock %}
+
+{% block content %}
+
+<h1>{% trans "Reject invitation" %}</h1>
+
+<p>{% blocktrans %}You were invited to a trial group meeting of the group {{ groupname }}. On this
+page you can reject this invitation.{% endblocktrans %}
+</p>
+
+<p>{% blocktrans %}You may either reject this specific invitation, because
+the time of the group does not fit your calendear, or unregister from the mailing list altogether.{% endblocktrans %}
+</p>
+
+<form action="" method="post">
+    {% csrf_token %}
+    <input type="hidden" name="key" value="{{invitation.key}}">
+    <p>
+    <input type="submit" name="reject_invitation"
+        value="{% trans "Reject this invitation and stay on the waitinglist" %}"/>
+    <input type="submit" name="leave_waitinglist" value="{% trans "Leave the waitinglist" %}"/>
+    </p>
+</form>
+
+{% endblock %}

jdav_web/members/templates/members/reject_success.html

@@ -0,0 +1,25 @@
+{% extends "members/base.html" %}
+{% load i18n %}
+{% load static %}
+
+{% block title %}
+{% trans "Invitation rejected" %}
+{% endblock %}
+
+{% block content %}
+
+<h1>{% trans "Invitation rejected" %}</h1>
+
+<p>
+{% if leave_waitinglist %}
+{% blocktrans %}You successfully unregistered from the waitinglist. If you want to rejoin the waitinglist
+at a later time, please do so on our website.
+{% endblocktrans %}
+{% else %}
+{% blocktrans %}You successfully rejected the invitation to a trial group meeting of the group
+{{ groupname }}. If there is a slot in a different group available, you will receive a new invitation.
+{% endblocktrans %}
+{% endif %}
+</p>
+
+{% endblock %}

jdav_web/members/urls.py

@@ -8,6 +8,7 @@ urlpatterns = [
     re_path(r'^registration', views.invited_registration , name='registration'),
     re_path(r'^register', views.register , name='register'),
     re_path(r'^waitinglist/confirm', views.confirm_waiting , name='confirm_waiting'),
+    re_path(r'^waitinglist/invitation/reject', views.reject_invitation , name='reject_invitation'),
     re_path(r'^waitinglist', views.register_waiting_list , name='register_waiting_list'),
     re_path(r'^mail/confirm', views.confirm_mail , name='confirm_mail'),
 ]

jdav_web/members/views.py

@@ -4,7 +4,7 @@ from django.http import HttpResponseRedirect
 from django.forms import ModelForm, TextInput, DateInput, BaseInlineFormSet,\
     inlineformset_factory, HiddenInput, FileInput
 from members.models import Member, RegistrationPassword, MemberUnconfirmedProxy, MemberWaitingList, Group,\
-    confirm_mail_by_key, EmergencyContact
+    confirm_mail_by_key, EmergencyContact, InvitationToGroup
 from django.urls import reverse
 from django.utils import timezone
 from django.conf import settings
@@ -229,9 +229,10 @@ def register(request):
             return render_register_wrong_password(request)
     elif waiter_key:
         try:
-            waiter = MemberWaitingList.objects.get(registration_key=waiter_key)
-            group = waiter.invited_for_group
-        except MemberWaitingList.DoesNotExist:
+            invitation = InvitationToGroup.objects.get(key=waiter_key)
+            waiter = invitation.waiter
+            group = invitation.group
+        except InvitationToGroup.DoesNotExist:
             return render_register_failed(request)
 
     # group must not be None
@@ -323,14 +324,13 @@ def invited_registration(request):
     if request.method == 'GET' and 'key' in request.GET:
         try:
             key = request.GET['key']
-            waiter = MemberWaitingList.objects.get(registration_key=key)
-            if not waiter.may_register(key):
-                raise KeyError
-            if not waiter.invited_for_group:
+            invitation = InvitationToGroup.objects.get(key=key)
+            waiter = invitation.waiter
+            if invitation.is_expired() or invitation.rejected:
                 raise KeyError
             form = MemberRegistrationForm(instance=waiter)
-            return render_register(request, group=waiter.invited_for_group, form=form, waiter_key=key)
-        except MemberWaitingList.DoesNotExist:
+            return render_register(request, group=invitation.group, form=form, waiter_key=key)
+        except InvitationToGroup.DoesNotExist:
             return render_invited_registration_failed(request, _("invalid"))
         except KeyError:
             return render_invited_registration_failed(request, _("expired"))
@@ -346,6 +346,50 @@ def render_invited_registration_failed(request, reason=""):
     return render(request, 'members/invited_registration_failed.html', context)
 
 
+def render_reject_invitation(request, invitation):
+    return render(request, 'members/reject_invitation.html',
+                  {'invitation': invitation,
+                   'groupname': invitation.group.name})
+
+
+def render_reject_invalid(request):
+    return render(request, 'members/reject_invalid.html')
+
+
+def render_reject_success(request, invitation, leave_waitinglist=False):
+    return render(request, 'members/reject_success.html',
+                  {'invitation': invitation,
+                   'leave_waitinglist': leave_waitinglist,
+                   'groupname': invitation.group.name})
+
+
+def reject_invitation(request):
+    if request.method == 'GET' and 'key' in request.GET:
+        key = request.GET['key']
+        try:
+            invitation = InvitationToGroup.objects.get(key=key)
+            if invitation.rejected or invitation.is_expired():
+                raise ValueError
+            return render_reject_invitation(request, invitation)
+        except (ValueError, InvitationToGroup.DoesNotExist):
+            return render_reject_invalid(request)
+    if request.method != 'POST' or 'key' not in request.POST:
+        return render_reject_invalid(request)
+    key = request.POST['key']
+    try:
+        invitation = InvitationToGroup.objects.get(key=key)
+    except InvitationToGroup.DoesNotExist:
+        return render_reject_invalid(request)
+    if 'reject_invitation' in request.POST:
+        invitation.rejected = True
+        invitation.save()
+        return render_reject_success(request, invitation)
+    elif 'leave_waitinglist' in request.POST:
+        invitation.waiter.unregister()
+        return render_reject_success(request, invitation, leave_waitinglist=True)
+    return render_reject_invalid(request)
+
+
 def confirm_waiting(request):
     if request.method == 'GET' and 'key' in request.GET:
         key = request.GET['key']