remove backend

apps/core/analytics.py

@@ -0,0 +1,125 @@
+from django.db import models
+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
+from django.utils import timezone
+from django.db.models import Count
+from datetime import timedelta
+import pghistory
+
+
+@pghistory.track()
+class PageView(models.Model):
+    content_type = models.ForeignKey(
+        ContentType, on_delete=models.CASCADE, related_name="page_views"
+    )
+    object_id = models.PositiveIntegerField()
+    content_object = GenericForeignKey("content_type", "object_id")
+
+    timestamp = models.DateTimeField(auto_now_add=True, db_index=True)
+    ip_address = models.GenericIPAddressField()
+    user_agent = models.CharField(max_length=512, blank=True)
+
+    class Meta:
+        indexes = [
+            models.Index(fields=["timestamp"]),
+            models.Index(fields=["content_type", "object_id"]),
+        ]
+
+    @classmethod
+    def get_trending_items(cls, model_class, hours=168, limit=10):
+        """Get trending items of a specific model class based on views in last X hours.
+
+        Args:
+            model_class: The model class to get trending items for (e.g., Park, Ride)
+            hours (int): Number of hours to look back for views (default: 168 = 7 days)
+            limit (int): Maximum number of items to return (default: 10)
+
+        Returns:
+            QuerySet: The trending items ordered by view count
+        """
+        content_type = ContentType.objects.get_for_model(model_class)
+        cutoff = timezone.now() - timedelta(hours=hours)
+
+        # Query through the ContentType relationship
+        item_ids = (
+            cls.objects.filter(content_type=content_type, timestamp__gte=cutoff)
+            .values("object_id")
+            .annotate(view_count=Count("id"))
+            .filter(view_count__gt=0)
+            .order_by("-view_count")
+            .values_list("object_id", flat=True)[:limit]
+        )
+
+        # Get the actual items in the correct order
+        if item_ids:
+            # Convert the list to a string of comma-separated values
+            id_list = list(item_ids)
+            # Use Case/When to preserve the ordering
+            from django.db.models import Case, When
+
+            preserved = Case(*[When(pk=pk, then=pos) for pos, pk in enumerate(id_list)])
+            return model_class.objects.filter(pk__in=id_list).order_by(preserved)
+
+        return model_class.objects.none()
+
+    @classmethod
+    def get_views_growth(
+        cls, content_type, object_id, current_period_hours, previous_period_hours
+    ):
+        """Get view growth statistics between two time periods.
+
+        Args:
+            content_type: ContentType instance for the model
+            object_id: ID of the specific object
+            current_period_hours: Hours for current period (e.g., 24)
+            previous_period_hours: Hours for previous period (e.g., 48)
+
+        Returns:
+            tuple: (current_views, previous_views, growth_percentage)
+        """
+        from datetime import timedelta
+
+        now = timezone.now()
+
+        # Current period: last X hours
+        current_start = now - timedelta(hours=current_period_hours)
+        current_views = cls.objects.filter(
+            content_type=content_type, object_id=object_id, timestamp__gte=current_start
+        ).count()
+
+        # Previous period: X hours before current period
+        previous_start = now - timedelta(hours=previous_period_hours)
+        previous_end = current_start
+        previous_views = cls.objects.filter(
+            content_type=content_type,
+            object_id=object_id,
+            timestamp__gte=previous_start,
+            timestamp__lt=previous_end,
+        ).count()
+
+        # Calculate growth percentage
+        if previous_views == 0:
+            growth_percentage = current_views * 100 if current_views > 0 else 0
+        else:
+            growth_percentage = (
+                (current_views - previous_views) / previous_views
+            ) * 100
+
+        return current_views, previous_views, growth_percentage
+
+    @classmethod
+    def get_total_views_count(cls, content_type, object_id, hours=168):
+        """Get total view count for an object within specified hours.
+
+        Args:
+            content_type: ContentType instance for the model
+            object_id: ID of the specific object
+            hours: Number of hours to look back (default: 168 = 7 days)
+
+        Returns:
+            int: Total view count
+        """
+        cutoff = timezone.now() - timedelta(hours=hours)
+        return cls.objects.filter(
+            content_type=content_type, object_id=object_id, timestamp__gte=cutoff
+        ).count()