From 0e79282e4dee8d7ea878525415ece39ecd88f6b5 Mon Sep 17 00:00:00 2001
From: henrikskog <henrikskog01@gmail.com>
Date: Tue, 20 Aug 2024 18:54:58 +0200
Subject: [PATCH] Dashboard tab for showing registration history

---
 apps/events/dashboard/views.py                |  13 ++
 apps/events/signals.py                        |  26 ++--
 templates/events/dashboard/details.html       |   6 +
 .../details/registration-history.html         | 127 ++++++++++++++++++
 4 files changed, 159 insertions(+), 13 deletions(-)
 create mode 100644 templates/events/dashboard/details/registration-history.html

diff --git a/apps/events/dashboard/views.py b/apps/events/dashboard/views.py
index 2bf9a6bf4..c8a17c063 100644
--- a/apps/events/dashboard/views.py
+++ b/apps/events/dashboard/views.py
@@ -1,9 +1,11 @@
+import json
 from collections import OrderedDict
 from datetime import datetime, time, timedelta
 
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.contrib.contenttypes.models import ContentType
+from django.core import serializers
 from django.core.exceptions import PermissionDenied
 from django.forms.models import modelformset_factory
 from django.http import HttpResponse, JsonResponse
@@ -29,6 +31,7 @@
     Attendee,
     CompanyEvent,
     Event,
+    EventUserAction,
     Reservation,
     Reservee,
 )
@@ -324,6 +327,16 @@ def event_details(request, event_id, active_tab="details"):
     context["active_tab"] = active_tab
     context["form"] = dashboard_forms.CreateEventForm(instance=event, user=request.user)
 
+    # History of event for analytics pane
+    registration_history = EventUserAction.objects.filter(event=event)
+    print(registration_history)
+    context["registration_history"] = registration_history
+    context["registration_history_json"] = json.dumps(
+        serializers.serialize("json", registration_history)
+    )
+    context["event_registration_start"] = event.attendance_event.registration_start
+    context["event_registration_end"] = event.attendance_event.registration_end
+
     extras = {}
     if event.is_attendance_event() and event.attendance_event.extras:
         for extra in event.attendance_event.extras.all():
diff --git a/apps/events/signals.py b/apps/events/signals.py
index f97aaae03..0d4b92163 100644
--- a/apps/events/signals.py
+++ b/apps/events/signals.py
@@ -1,18 +1,18 @@
-# from django.db.models.signals import post_delete, post_save
-# from django.dispatch import receiver
+from django.db.models.signals import post_delete, post_save
+from django.dispatch import receiver
 
-# from .models import Attendee, EventUserAction
+from .models import Attendee, EventUserAction
 
 
-# @receiver(signal=post_save, sender=Attendee)
-# def handle_payment_relation_status_change(sender, instance: Attendee, **kwargs):
-#     EventUserAction.objects.create(
-#         user=instance.user, event=instance.event.event, type="register"
-#     )
+@receiver(signal=post_save, sender=Attendee)
+def handle_attendee_creation(sender, instance: Attendee, **kwargs):
+    EventUserAction.objects.create(
+        user=instance.user, event=instance.event.event, type="register"
+    )
 
 
-# @receiver(signal=post_delete, sender=Attendee)
-# def handle_payment_transaction_status_change(sender, instance: Attendee, **kwargs):
-#     EventUserAction.objects.create(
-#         user=instance.user, event=instance.event.event, type="unregister"
-#     )
+@receiver(signal=post_delete, sender=Attendee)
+def handle_attendee_deletion(sender, instance: Attendee, **kwargs):
+    EventUserAction.objects.create(
+        user=instance.user, event=instance.event.event, type="unregister"
+    )
diff --git a/templates/events/dashboard/details.html b/templates/events/dashboard/details.html
index a2bbfda4f..d84d3dfae 100644
--- a/templates/events/dashboard/details.html
+++ b/templates/events/dashboard/details.html
@@ -82,6 +82,9 @@ <h3>{{ event }}</h3>
             <li role="presentation">
                 <a href="#company" aria-controls="company" role="tab" data-toggle="tab">Bedrifter</a>
             </li>
+            <li role="presentation">
+                <a href="#registration-history" aria-controls="registration-history" role="tab" data-toggle="tab">Påmeldingshistorikk</a>
+            </li>
         </ul>
     </div>
 </div>
@@ -145,6 +148,9 @@ <h4 class="panel-title">
         {% include "events/dashboard/details/company.html" %}
         <div id="add-company-view"></div>
     </div>
+    <div role="tabpanel" class="tab-pane" id="registration-history">
+        {% include "events/dashboard/details/registration-history.html" %}
+    </div>
 </div>
 
 {% endblock content %}
diff --git a/templates/events/dashboard/details/registration-history.html b/templates/events/dashboard/details/registration-history.html
new file mode 100644
index 000000000..f4b95fc4a
--- /dev/null
+++ b/templates/events/dashboard/details/registration-history.html
@@ -0,0 +1,127 @@
+<div class="row">
+    <div class="col-lg-12" style="position: relative; height:40vh; width:80vw">
+        <canvas id="attendeesChart"></canvas>
+    </div>
+</div>
+
+
+{% block js %}
+    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.3/dist/chart.umd.min.js"></script>
+    <script>
+        const registrationHistoryRaw  = "{{ registration_history_json|escapejs }}";
+        const registrationHistory = JSON.parse(JSON.parse(registrationHistoryRaw));
+
+        // history type:
+        /* 
+        [{
+            "model": "events.eventuseraction",
+            "pk": 1,
+            "fields": {
+                "timestamp": "2024-08-20T13:52:55.391Z",
+                "type": "register",
+                "user": 1
+            }
+        }, ...]
+        */
+
+        const eventRegistrationStart = new Date("{{ event_registration_start|safe }}");
+        const eventRegistrationEnd = new Date("{{ event_registration_end|safe }}");
+
+        const daysWithTotal = (raw) => {
+            const base = [{timestamp: eventRegistrationStart, total: 0}];
+            const end = new Date(Math.min(new Date(), eventRegistrationEnd));
+            const days = Math.floor((end - eventRegistrationStart) / (1000 * 60 * 60 * 24));
+
+            const daysWithTotal = [];
+            for (let i = 0; i <= days; i++) {
+                let totalForDay = 0;
+                const day = new Date(eventRegistrationStart);
+                day.setDate(day.getDate() + i);
+
+                // set time to 23:59:59
+                day.setHours(23, 59, 59);
+
+                for (let j = 0; j < raw.length; j++) {
+                    const actionDate = new Date(raw[j].fields.timestamp);
+                    if (actionDate <= day) {
+                        totalForDay += raw[j].fields.type === 'register' ? 1 : -1;
+                    }
+                }
+
+                daysWithTotal.push({ timestamp: day, total: totalForDay });
+            }
+
+            return daysWithTotal;
+        }
+
+        const totalRegistrationsPerDay = daysWithTotal(registrationHistory);
+
+        // plot total registrations over time using chart.js
+        const ctx = document.getElementById('attendeesChart').getContext('2d');
+        const chart = new Chart(ctx, {
+            type: 'line',
+            data: {
+                // extract day from timestamp
+                labels: totalRegistrationsPerDay.map((action, i) => action.timestamp.toLocaleDateString().split('T')[0]),
+                datasets: [{
+                    label: 'Registrations',
+                    data: totalRegistrationsPerDay.map(action => action.total),
+                    backgroundColor: 'rgba(54, 162, 235, 0.2)',
+                    borderColor: 'rgba(54, 162, 235, 1)',
+                    borderWidth: 1
+                }]
+            },
+            options: {
+                // responsive: false,
+                plugins: {
+                    tooltip: {
+                        callbacks: {
+                            label: function(context) {
+                                const index = context.dataIndex;
+                                const action = totalRegistrationsPerDay[index];
+                                return `Total: ${action.total}, Timestamp: ${action.timestamp.toLocaleString()}`;
+                            }
+                        }
+                    }
+                }
+            }
+        });
+
+        // render
+        chart.render();
+    </script>
+{% endblock %}
+
+<div class="row">
+    <div class="col-lg-12">
+        <div class="panel panel-default">
+            <div class="panel-heading">
+                <h3 class="panel-title">Historikk</h3>
+            </div>
+            <div class="panel-body">
+                <div id="attendees-content">
+                    <table class="table table-striped table-condensed tablesorter attendees" id="attendees-table">
+                        <thead>
+                            <tr>
+                                <th>#</th>
+                                <th>Tidspunkt</th>
+                                <th>Registrert årstall for bruker</th>
+                                <th>Handling</th>
+                            </tr>
+                        </thead>
+                        <tbody id="attendeelist">
+                            {% for registration in registration_history reversed %}
+                            <tr>
+                                <td>{{ forloop.counter }}</td>
+                                <td>{{ registration.timestamp }}</td>
+                                <td>{{ registration.user.year }}</td>
+                                <td>{{ registration.type }}</td>
+                            </tr>
+                            {% endfor %}
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
\ No newline at end of file