feat: ai letter + disabled fl

app/models.py

@@ -19,3 +19,32 @@ class Offer:
     @property
     def dedup_key(self) -> str:
         return f"{self.source}:{self.external_id}"
+
+    def to_dict(self) -> dict[str, str | int | None]:
+        return {
+            "source": self.source,
+            "external_id": self.external_id,
+            "title": self.title,
+            "description": self.description,
+            "price": self.price,
+            "price_amount": self.price_amount,
+            "url": self.url,
+            "category_id": self.category_id,
+            "published_at": self.published_at,
+            "seller_username": self.seller_username,
+        }
+
+    @classmethod
+    def from_dict(cls, data: dict[str, str | int | None]) -> "Offer":
+        return cls(
+            source=str(data["source"]),
+            external_id=str(data["external_id"]),
+            title=str(data["title"]),
+            description=str(data["description"]),
+            price=str(data["price"]),
+            price_amount=int(data["price_amount"]) if data["price_amount"] is not None else None,
+            url=str(data["url"]),
+            category_id=int(data["category_id"]),
+            published_at=str(data["published_at"]),
+            seller_username=str(data["seller_username"]) if data["seller_username"] is not None else None,
+        )