Track sold cars

tests/test_db.py

@@ -2,6 +2,7 @@
 
 import tempfile
 import unittest
+from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
 from sqlalchemy import select
@@ -48,6 +49,14 @@ class TestPersistenceServiceIntegration(unittest.TestCase):
             ],
         )
 
+    @staticmethod
+    def _as_utc(value: datetime | None) -> datetime | None:
+        if value is None:
+            return None
+        if value.tzinfo is None:
+            return value.replace(tzinfo=timezone.utc)
+        return value.astimezone(timezone.utc)
+
     def test_insert_update_and_skip_flow(self) -> None:
         first = self._record("777", price=1000)
         inserted = self.persistence.upsert_car(first)
@@ -122,6 +131,57 @@ class TestPersistenceServiceIntegration(unittest.TestCase):
         self.assertEqual(len(cars), 1)
         self.assertEqual(cars[0].origin_id, "NEW-ID")
 
+    def test_upsert_preserves_first_seen_and_reactivates_seen_car(self) -> None:
+        first_seen = datetime(2026, 5, 1, tzinfo=timezone.utc)
+        sold_at = datetime(2026, 5, 2, tzinfo=timezone.utc)
+        seen_at = datetime(2026, 5, 5, tzinfo=timezone.utc)
+        first = self._record("mobile.de:777", price=1000)
+        first.first_seen_at = first_seen
+        first.last_seen_at = first_seen
+        self.persistence.upsert_car(first)
+
+        with self.persistence.session_scope() as session:
+            car = session.execute(select(Car).where(Car.origin_id == "mobile.de:777")).scalar_one()
+            car.is_sold = True
+            car.sold_at = sold_at
+
+        updated = self._record("mobile.de:777", price=1500)
+        updated.first_seen_at = seen_at
+        updated.last_seen_at = seen_at
+        updated.is_sold = False
+        updated.sold_at = None
+        self.persistence.upsert_car(updated)
+
+        with self.persistence.session_scope() as session:
+            car = session.execute(select(Car).where(Car.origin_id == "mobile.de:777")).scalar_one()
+
+        self.assertEqual(self._as_utc(car.first_seen_at), first_seen)
+        self.assertEqual(self._as_utc(car.last_seen_at), seen_at)
+        self.assertFalse(car.is_sold)
+        self.assertIsNone(car.sold_at)
+        self.assertEqual(car.price, 1500)
+
+    def test_mark_sold_not_seen_since_sets_sold_at_to_cycle_seen_at(self) -> None:
+        seen_at = datetime(2026, 5, 5, tzinfo=timezone.utc)
+        old = self._record("mobile.de:old")
+        old.first_seen_at = seen_at - timedelta(days=2)
+        old.last_seen_at = seen_at - timedelta(days=1)
+        current = self._record("mobile.de:current")
+        current.first_seen_at = seen_at
+        current.last_seen_at = seen_at
+        self.persistence.upsert_car(old)
+        self.persistence.upsert_car(current)
+
+        marked = self.persistence.mark_sold_not_seen_since(seen_at)
+
+        self.assertEqual(marked, 1)
+        with self.persistence.session_scope() as session:
+            cars = session.execute(select(Car).order_by(Car.origin_id.asc())).scalars().all()
+
+        sold_map = {car.origin_id: (car.is_sold, self._as_utc(car.sold_at)) for car in cars}
+        self.assertEqual(sold_map["mobile.de:old"], (True, seen_at))
+        self.assertEqual(sold_map["mobile.de:current"], (False, None))
+
 
 if __name__ == "__main__":
     unittest.main()