euscanwww: Handler's statistics

Signed-off-by: volpino <fox91@anche.no>

euscanwww/djeuscan/templates/euscan/statistics.html

@@ -5,6 +5,30 @@
 {% block content %}
 <h2>Statistics</h2>
 
+<hr>
+
+<h3>Handlers</h3>
+<table class="table">
+  <thead>
+    <tr>
+      <th></th>
+      <th># of found versions</th>
+      <th>average confidence</th>
+    </tr>
+  </thead>
+  <tbody>
+    {% for handler in handlers %}
+      <tr>
+        <td>{{ handler.handler }}</td>
+        <td>{{ handler.n }}</td>
+        <td>{{ handler.avg_conf }}</td>
+      </tr>
+    {% endfor %}
+  </tbody>
+</table>
+
+<hr>
+
 <h3>Current statistics</h3>
 <img alt="pie versions" src="{% url "chart" 'pie-versions' %}" />
 <img alt="pie packages" src="{% url "chart" 'pie-packages' %}" />

euscanwww/djeuscan/views.py

@@ -8,6 +8,7 @@ from django.core.urlresolvers import reverse
 from django.shortcuts import get_object_or_404, redirect
 from django.contrib.auth.decorators import login_required
 from django.views.decorators.http import require_POST
+from django.db import models
 
 from djeuscan.helpers import version_key, packages_from_names, \
     get_maintainer_or_404, get_make_conf, get_layman_repos, versiontag_to_attrs
@@ -376,7 +377,14 @@ def config(request):
 
 @render_to("euscan/statistics.html")
 def statistics(request):
-    return {}
+    handlers = (
+        Version.objects.values("handler", "confidence")
+                       .filter(overlay="")
+                       .annotate(n=models.Count("handler"),
+                                 avg_conf=models.Avg("confidence"))
+                       .order_by("-n")
+    )
+    return {"handlers": handlers}
 
 
 def chart(request, **kwargs):