remove backend

apps/api/v1/serializers/history.py

@@ -0,0 +1,186 @@
+"""
+History domain serializers for ThrillWiki API v1.
+
+This module contains serializers for history tracking and timeline functionality
+using django-pghistory.
+"""
+
+from rest_framework import serializers
+from drf_spectacular.utils import extend_schema_field
+
+
+class ParkHistoryEventSerializer(serializers.Serializer):
+    """Serializer for park history events."""
+
+    pgh_id = serializers.IntegerField(read_only=True)
+    pgh_created_at = serializers.DateTimeField(read_only=True)
+    pgh_label = serializers.CharField(read_only=True)
+    pgh_obj_id = serializers.IntegerField(read_only=True)
+    pgh_context = serializers.JSONField(read_only=True, allow_null=True)
+    pgh_data = serializers.JSONField(read_only=True)
+    event_type = serializers.SerializerMethodField()
+    changes = serializers.SerializerMethodField()
+
+    @extend_schema_field(serializers.CharField())
+    def get_event_type(self, obj) -> str:
+        """Get human-readable event type."""
+        return obj.pgh_label.replace("_", " ").title()
+
+    @extend_schema_field(serializers.DictField())
+    def get_changes(self, obj) -> dict:
+        """Get changes made in this event."""
+        if hasattr(obj, "pgh_diff") and obj.pgh_diff:
+            return obj.pgh_diff
+        return {}
+
+
+class RideHistoryEventSerializer(serializers.Serializer):
+    """Serializer for ride history events."""
+
+    pgh_id = serializers.IntegerField(read_only=True)
+    pgh_created_at = serializers.DateTimeField(read_only=True)
+    pgh_label = serializers.CharField(read_only=True)
+    pgh_obj_id = serializers.IntegerField(read_only=True)
+    pgh_context = serializers.JSONField(read_only=True, allow_null=True)
+    pgh_data = serializers.JSONField(read_only=True)
+    event_type = serializers.SerializerMethodField()
+    changes = serializers.SerializerMethodField()
+
+    @extend_schema_field(serializers.CharField())
+    def get_event_type(self, obj) -> str:
+        """Get human-readable event type."""
+        return obj.pgh_label.replace("_", " ").title()
+
+    @extend_schema_field(serializers.DictField())
+    def get_changes(self, obj) -> dict:
+        """Get changes made in this event."""
+        if hasattr(obj, "pgh_diff") and obj.pgh_diff:
+            return obj.pgh_diff
+        return {}
+
+
+class HistorySummarySerializer(serializers.Serializer):
+    """Serializer for history summary information."""
+
+    total_events = serializers.IntegerField()
+    first_recorded = serializers.DateTimeField(allow_null=True)
+    last_modified = serializers.DateTimeField(allow_null=True)
+
+
+class ParkHistoryOutputSerializer(serializers.Serializer):
+    """Output serializer for complete park history."""
+
+    park = serializers.SerializerMethodField()
+    current_state = serializers.SerializerMethodField()
+    summary = HistorySummarySerializer()
+    events = ParkHistoryEventSerializer(many=True)
+
+    @extend_schema_field(serializers.DictField())
+    def get_park(self, obj) -> dict:
+        """Get basic park information."""
+        park = obj.get("park")
+        if park:
+            return {
+                "id": park.id,
+                "name": park.name,
+                "slug": park.slug,
+                "status": park.status,
+            }
+        return {}
+
+    @extend_schema_field(serializers.DictField())
+    def get_current_state(self, obj) -> dict:
+        """Get current park state."""
+        park = obj.get("current_state")
+        if park:
+            return {
+                "id": park.id,
+                "name": park.name,
+                "slug": park.slug,
+                "status": park.status,
+                "opening_date": (
+                    park.opening_date.isoformat()
+                    if hasattr(park, "opening_date") and park.opening_date
+                    else None
+                ),
+                "coaster_count": getattr(park, "coaster_count", 0),
+                "ride_count": getattr(park, "ride_count", 0),
+            }
+        return {}
+
+
+class RideHistoryOutputSerializer(serializers.Serializer):
+    """Output serializer for complete ride history."""
+
+    ride = serializers.SerializerMethodField()
+    current_state = serializers.SerializerMethodField()
+    summary = HistorySummarySerializer()
+    events = RideHistoryEventSerializer(many=True)
+
+    @extend_schema_field(serializers.DictField())
+    def get_ride(self, obj) -> dict:
+        """Get basic ride information."""
+        ride = obj.get("ride")
+        if ride:
+            return {
+                "id": ride.id,
+                "name": ride.name,
+                "slug": ride.slug,
+                "park_name": ride.park.name if hasattr(ride, "park") else None,
+                "status": getattr(ride, "status", "UNKNOWN"),
+            }
+        return {}
+
+    @extend_schema_field(serializers.DictField())
+    def get_current_state(self, obj) -> dict:
+        """Get current ride state."""
+        ride = obj.get("current_state")
+        if ride:
+            return {
+                "id": ride.id,
+                "name": ride.name,
+                "slug": ride.slug,
+                "park_name": ride.park.name if hasattr(ride, "park") else None,
+                "status": getattr(ride, "status", "UNKNOWN"),
+                "opening_date": (
+                    ride.opening_date.isoformat()
+                    if hasattr(ride, "opening_date") and ride.opening_date
+                    else None
+                ),
+                "ride_type": getattr(ride, "ride_type", "Unknown"),
+            }
+        return {}
+
+
+class UnifiedHistoryTimelineSerializer(serializers.Serializer):
+    """Serializer for unified history timeline."""
+
+    summary = serializers.SerializerMethodField()
+    events = serializers.SerializerMethodField()
+
+    @extend_schema_field(serializers.DictField())
+    def get_summary(self, obj) -> dict:
+        """Get timeline summary."""
+        return obj.get("summary", {})
+
+    @extend_schema_field(serializers.ListField(child=serializers.DictField()))
+    def get_events(self, obj) -> list:
+        """Get timeline events."""
+        events = obj.get("events", [])
+        event_data = []
+
+        for event in events:
+            event_data.append(
+                {
+                    "pgh_id": event.pgh_id,
+                    "pgh_created_at": event.pgh_created_at,
+                    "pgh_label": event.pgh_label,
+                    "pgh_model": event.pgh_model,
+                    "pgh_obj_id": event.pgh_obj_id,
+                    "pgh_context": event.pgh_context,
+                    "event_type": event.pgh_label.replace("_", " ").title(),
+                    "model_type": event.pgh_model.split(".")[-1].title(),
+                }
+            )
+
+        return event_data