Store posting results to a mongodb

src/content_automation/interfaces.py

@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from typing import Protocol
+from typing import Any, Protocol
+
+from content_automation.models import PublishedContentRecord
 
 
 class SocialNetworkAdapter(Protocol):
@@ -8,5 +10,12 @@ class SocialNetworkAdapter(Protocol):
 
     name: str
 
-    def post_media(self, media_url: str, caption: str) -> str:
-        """Publish media and return an external post identifier."""
+    def post_media(self, media_url: str, caption: str) -> Any:
+        """Publish media and return a provider response payload."""
+
+
+class PublishedContentStore(Protocol):
+    """Contract for persisting publish operation metadata."""
+
+    def save(self, record: PublishedContentRecord) -> None:
+        """Persist a published content record."""