add some statistics

nonstop/templates/nonstop/statistics.html

+{% extends "base.html" %}
+{% load i18n %}
+
+{% block appbar %}
+<h2>Nonstop - Statisticss</h2>
+{% endblock %}
+
+{% block content %}
+
+<div class="nonstop-stats">
+{% for zone in zones %}
+<h3>{{ zone.title }} <span>({{zone.start}} → {{zone.end}})</span></h3>
+
+<ul>
+  <li>Number of tracks: {{zone.stats.count}}
+  <ul>
+  <li>Instru: {{zone.stats.instru}} ({{zone.stats.instru_percentage}})</li>
+  <li>SABAM: {{zone.stats.sabam}} ({{zone.stats.sabam_percentage}})</li>
+  <li>CFWB: {{zone.stats.cfwb}} ({{zone.stats.cfwb_percentage}})</li>
+  </ul></li>
+</ul>
+
+{% endfor %}
+</div>
+
+{% endblock %}

nonstop/urls.py

 from django.conf.urls import url
 
-from .views import SomaDayArchiveView, SomaDayArchiveCsvView, RedirectTodayView, TrackDetailView, ArtistDetailView, ArtistListView
+from .views import SomaDayArchiveView, SomaDayArchiveCsvView, RedirectTodayView, TrackDetailView, ArtistDetailView, ArtistListView, StatisticsView
 
 urlpatterns = [
     # Example: /2012/nov/10/
     url(r'^$', RedirectTodayView.as_view(), name='nonstop-today'),
+    url(r'^stats/$', StatisticsView.as_view(), name='stats-view'),
     url(r'^tracks/(?P<pk>\d+)/$', TrackDetailView.as_view(), name='track-view'),
     url(r'^artists/$', ArtistListView.as_view(), name='artist-list'),
     url(r'^artists/(?P<pk>\d+)/$', ArtistDetailView.as_view(), name='artist-view'),

nonstop/views.py

@@ -4,12 +4,13 @@ from cStringIO import StringIO
 
 from django.core.urlresolvers import reverse
 from django.http import HttpResponse
-from django.views.generic.base import RedirectView
+from django.views.generic.base import RedirectView, TemplateView
 from django.views.generic.dates import DayArchiveView
 from django.views.generic.detail import DetailView
 from django.views.generic.list import ListView
 
 from .models import SomaLogLine, Track, Artist
+from emissions.models import Nonstop
 
 class SomaDayArchiveView(DayArchiveView):
     queryset = SomaLogLine.objects.all()
@@ -57,3 +58,46 @@ class ArtistDetailView(DetailView):
 
 class ArtistListView(ListView):
     model = Artist
+
+
+class ZoneStats(object):
+    def __init__(self, zone):
+        self.zone = zone
+
+    def count(self, **kwargs):
+        return Track.objects.filter(nonstop_zones=self.zone, **kwargs).count()
+
+    def percentage(self, **kwargs):
+        total = self.count()
+        if total == 0:
+            return '-'
+        return str(100 * self.count(**kwargs) / total)
+
+    def instru(self):
+        return self.count(instru=True)
+
+    def instru_percentage(self):
+        return self.percentage(instru=True)
+
+    def sabam(self):
+        return self.count(sabam=True)
+
+    def sabam_percentage(self):
+        return self.percentage(sabam=True)
+
+    def cfwb(self):
+        return self.count(cfwb=True)
+
+    def cfwb_percentage(self):
+        return self.percentage(cfwb=True)
+
+class StatisticsView(TemplateView):
+    template_name = 'nonstop/statistics.html'
+
+    def get_context_data(self, **kwargs):
+        context = super(StatisticsView, self).get_context_data(**kwargs)
+        context['zones'] = Nonstop.objects.all().order_by('start')
+        for zone in context['zones']:
+            zone.stats = ZoneStats(zone)
+        return context
+