Ajout du suivi des visites : modèle Visit, middleware de tracking, mises à jour des vues et du tableau de bord statistiques.

home/views.py

@@ -2,6 +2,7 @@ from django.shortcuts import render, get_object_or_404
 from django.contrib.auth.decorators import user_passes_test
 from django.utils import timezone
 from django.db.models import Count
+from core.models import Visit
 from django.views.decorators.cache import cache_page
 from django.contrib.auth.models import User
 from courses.models import Course, Lesson
@@ -98,6 +99,39 @@ def stats_dashboard(request):
     revenus_disponibles = False
     technique_disponible = False
 
+    # Visites / Trafic
+    period_start_date = start_dt.date()
+    period_end_date = now.date()
+    period_visits = Visit.objects.filter(date__gte=period_start_date, date__lte=period_end_date)
+
+    unique_visitors = period_visits.values('visitor_id').distinct().count()
+
+    earlier_visitors_qs = Visit.objects.filter(date__lt=period_start_date).values('visitor_id').distinct()
+    returning_visitors = period_visits.filter(visitor_id__in=earlier_visitors_qs).values('visitor_id').distinct().count()
+
+    converted_visitors = (
+        period_visits
+        .filter(became_user_at__isnull=False, became_user_at__date__gte=period_start_date, became_user_at__date__lte=period_end_date)
+        .values('visitor_id').distinct().count()
+    )
+
+    top_sources_qs = (
+        period_visits
+        .values('source')
+        .annotate(c=Count('visitor_id', distinct=True))
+        .order_by('-c')
+    )
+    top_countries_qs = (
+        period_visits
+        .exclude(country='')
+        .values('country')
+        .annotate(c=Count('visitor_id', distinct=True))
+        .order_by('-c')
+    )
+
+    top_sources_table = [(row['source'] or 'Direct/Unknown', row['c']) for row in top_sources_qs[:10]]
+    top_countries_table = [(row['country'], row['c']) for row in top_countries_qs[:10]]
+
     # Helper pour avoir toutes les dates de la période et remplir les trous
     def build_series_dict(qs, date_key='day', count_key='c'):
         counts = {str(item[date_key]): item[count_key] for item in qs}
@@ -131,6 +165,9 @@ def stats_dashboard(request):
             'total_users': total_users,
             'new_users_period': sum(values_new_users),
             'active_users_period': active_users_count,
+            'unique_visitors': unique_visitors,
+            'returning_visitors': returning_visitors,
+            'converted_visitors': converted_visitors,
             'total_courses': total_courses,
             'courses_enabled': total_courses_enabled,
             'total_lessons': total_lessons,
@@ -153,6 +190,8 @@ def stats_dashboard(request):
         # Tables
         'new_users_table': new_users_table,
         'new_courses_table': new_courses_table,
+        'top_sources_table': top_sources_table,
+        'top_countries_table': top_countries_table,
     }
 
     # Sérialisation JSON pour Chart.js