persistence for recurring api calls

backend/src/structs/trip.py

@@ -0,0 +1,28 @@
+from pydantic import BaseModel, Field
+
+from .landmark import Landmark
+from .linked_landmarks import LinkedLandmarks
+import uuid
+
+class Trip(BaseModel):
+    uuid: str = Field(default_factory=uuid.uuid4)
+    total_time: int
+    first_landmark_uuid: str
+
+
+    @classmethod
+    def from_linked_landmarks(self, landmarks: LinkedLandmarks, cache_client) -> "Trip":
+        """
+        Initialize a new Trip object and ensure it is stored in the cache.
+        """
+        trip = Trip(
+            total_time = landmarks.total_time,
+            first_landmark_uuid = str(landmarks[0].uuid)
+        )
+
+        # Store the trip in the cache
+        cache_client.set(f"trip_{trip.uuid}", trip)
+        for landmark in landmarks:
+            cache_client.set(f"landmark_{landmark.uuid}", landmark)
+
+        return trip