use stored payments in finance view and improve design

gaehsnitz/static/gaehsnitz/style.css

@@ -105,6 +105,8 @@ table {
     margin-top: 12px;
     margin-bottom: 12px;
     border-spacing: 0;
+    border-right: 1px solid #664422;
+    border-bottom: 1px solid #664422;
 }
 
 td {
@@ -112,8 +114,8 @@ td {
     text-align: right;
     font-size: 0.9rem;
     border-top: 1px solid #664422;
-    border-left: 1px solid #664422;;
-    padding: 2px 4px;
+    border-left: 1px solid #664422;
+    padding: 3px 6px;
 }
 
 .bandbox {

gaehsnitz/templates/gaehsnitz/finance.html

@@ -16,41 +16,39 @@
 
     <h2>aktueller Stand</h2>
 
-    <h3>Ausgaben</h3>
     <ul>
-        <li>27.05., Rasen, 10€</li>
+        {% for topic, amount in balance_dict.items %}
+            <li>{{ amount }}€ {{ topic }}</li>
+        {% endfor %}
     </ul>
-    <p>Summe: 10€</p>
+    <p><b>Summe: {{ overall_sum }}€</b></p>
 
-    <h3>Einnahmen</h3>
-    <ul>
-        <li>22.04., Feierkredit, 50€</li>
-        <li>29.04., Feierkredit, 30€</li>
-        <li>09.05., Feierkredit, 15€</li>
-    </ul>
-    <p>Summe: 95€</p>
+    <h3>Details</h3>
 
-    <p><b>Gesamt: +85€</b></p>
+    {% for topic, payments in detailed_payments.items %}
+        <p>{{ topic }}:</p>
+        <table>
+            {% for payment in payments %}
+                <tr>
+                    <td>{{ payment.date|date:"d.m." }}</td>
+                    <td>{{ payment.amount }}€</td>
+                    <td>{{ payment.other_party }}</td>
+                    <td>{{ payment.note }}</td>
+                </tr>
+            {% endfor %}
+        </table>
+    {% endfor %}
 
     <h2>Geplantes</h2>
 
     <h3>Ausgaben</h3>
     <ul>
         <li>Getränke, 500 - 800€</li>
-        <li>Dixis, 20 - 220€</li>
+        <li>Dixis, 180 - 250€</li>
         <li>Baumarkt (Lack, Lichter, Pavillons, Strom), 100 - 250€</li>
         <li>Band-Gage, 300 - 500€</li>
     </ul>
-    <p>Summe: 920 - 1.770€</p>
-
-    <h3>Einnahmen</h3>
-    <ul>
-        <li>Feierkredit (Zahlungen im Voraus)</li>
-        <li>Eintritt</li>
-        <li>Getränkeverkauf</li>
-        <li>Essensverkauf</li>
-        <li>Spenden</li>
-    </ul>
+    <p>Summe: 1.080 - 1.800€</p>
 
     <h3>Getränke</h3>
     <p>Wir haben hier mal mit der Erfahrung des letzten Jahres grob überschlagen:</p>

gaehsnitz/views.py

@@ -1,7 +1,11 @@
-from datetime import date
+from collections import defaultdict
+from datetime import date, timezone
 
+from django.utils import timezone
 from django.views.generic import TemplateView
 
+from gaehsnitz.models import Payment
+
 festival_start_date, festival_end_date = date(2022, 8, 25), date(2022, 8, 28)
 
 
@@ -31,6 +35,28 @@ class ProgramView(GaehsnitzTemplateView):
 class FinanceView(GaehsnitzTemplateView):
     template_name = "gaehsnitz/finance.html"
 
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+
+        balance_dict = defaultdict(int)
+        detailed_payments = defaultdict(list)
+        overall_sum = 0
+        for payment in Payment.objects.filter(date__year=timezone.now().year).order_by("topic", "date"):
+            topic_name = Payment.Topic(payment.topic).label
+            sign = 1 if payment.is_incoming() else -1
+            balance_dict[topic_name] += sign * payment.amount
+            overall_sum += sign * payment.amount
+            if payment.is_outgoing() and payment.topic != Payment.Topic.bands:
+                detailed_payments[topic_name].append(payment)
+
+        context.update({
+            # apparently defaultdicts do not work
+            "balance_dict": dict(balance_dict),
+            "overall_sum": overall_sum,
+            "detailed_payments": dict(detailed_payments),
+        })
+        return context
+
 
 class ForBandsView(GaehsnitzTemplateView):
     template_name = "gaehsnitz/for-bands.html"