Add total line to category plot

Closes #9

nummi/category/templates/category/category_plot.html

@@ -58,5 +58,30 @@
                 {% endfor %}
             {% endspaceless %}
         </tbody>
+        {% if categories %}
+            <tfoot>
+                <tr>
+                    <th scope="row" colspan="2" class="l">{% translate "Total" %}</th>
+                    <td class="value">{{ total_m|pmrvalue }}</td>
+                    <td class="bar m">
+                        <div style="width: {% widthratio total_m max -100 %}%"></div>
+                        {% if total < 0 %}
+                            <div class="tot" style="width:{% widthratio total max -100 %}%">
+                                <span>{{ total|pmrvalue }}</span>
+                            </div>
+                        {% endif %}
+                    </td>
+                    <td class="bar p">
+                        <div style="width: {% widthratio total_p max 100 %}%"></div>
+                        {% if total > 0 %}
+                            <div class="tot" style="width:{% widthratio total max 100 %}%">
+                                <span>{{ total|pmrvalue }}</span>
+                            </div>
+                        {% endif %}
+                    </td>
+                    <td class="value">{{ total_p|pmrvalue }}</td>
+                </tr>
+            </tfoot>
+        {% endif %}
     </table>
 </div>

nummi/category/templatetags/category.py

@@ -1,5 +1,6 @@
 from django import template
 from django.db import models
+from django.db.models.functions import Greatest
 
 register = template.Library()
 
@@ -18,10 +19,9 @@ def category_plot(transactions):
     )
     return {
         "categories": categories,
-        "max": max(
+    } | categories.aggregate(
-            categories.aggregate(
+        max=Greatest(models.Sum("sum_m"), models.Sum("sum_p")),
-                max=models.Max("sum_p", default=0),
+        total_m=models.Sum("sum_m"),
-                min=models.Min("sum_m", default=0),
+        total_p=models.Sum("sum_p"),
-            ).values(),
+        total=models.Sum("value"),
-        ),
+    )
-    }

nummi/main/static/main/css/plot.css

@@ -70,3 +70,7 @@ table.full-width col.bar {
     overflow: hidden;
   }
 }
+
+.plot tfoot {
+  background: var(--bg-01);
+}