fix lazy_loading

app/core/_crypto/content.py

@@ -48,25 +48,37 @@ async def create_encrypted_content(
     db_session, decrypted_content: StoredContent,
 ) -> StoredContent:
     from sqlalchemy import select
-    encrypted_content = (await db_session.execute(select(StoredContent).where(
-        StoredContent.id == decrypted_content.decrypted_content_id
-    ))).scalars().first()
+    # Try to find an already created encrypted counterpart for this decrypted content
+    encrypted_content = (
+        await db_session.execute(
+            select(StoredContent).where(StoredContent.decrypted_content_id == decrypted_content.id)
+        )
+    ).scalars().first()
     if encrypted_content:
         make_log("create_encrypted_content", f"(d={decrypted_content.cid.serialize_v2()}) => (e={encrypted_content.cid.serialize_v2()}): already exist (found by decrypted content)", level="debug")
         return encrypted_content
 
     encrypted_content = None
-    if decrypted_content.key is None:
+    # Avoid accessing relationship attributes in async context to prevent MissingGreenlet
+    if not decrypted_content.key_id:
         key = await create_new_encryption_key(db_session, user_id=decrypted_content.user_id)
         decrypted_content.key_id = key.id
         await db_session.commit()
-        decrypted_content = (await db_session.execute(select(StoredContent).where(StoredContent.id == decrypted_content.id))).scalars().first()
         assert decrypted_content.key_id, "Key not assigned"
 
+    # Explicitly load the key to avoid lazy-loading via relationship in async mode
+    key = (
+        await db_session.execute(select(KnownKey).where(KnownKey.id == decrypted_content.key_id))
+    ).scalars().first()
+    # If the referenced key is missing or malformed, create a fresh one
+    if not key or not key.seed:
+        key = await create_new_encryption_key(db_session, user_id=decrypted_content.user_id)
+        decrypted_content.key_id = key.id
+        await db_session.commit()
+
     decrypted_path = os.path.join(UPLOADS_DIR, decrypted_content.hash)
     decrypted_bin = b58decode(decrypted_content.hash)
 
-    key = decrypted_content.key
     cipher = AESCipher(key.seed_bin)
 
     encrypted_bin = cipher.encrypt(decrypted_bin)
@@ -79,7 +91,7 @@ async def create_encrypted_content(
 
     encrypted_content = None
 
-    encrypted_meta = decrypted_content.meta
+    encrypted_meta = dict(decrypted_content.meta or {})
     encrypted_meta["encrypt_algo"] = "AES256"
 
     encrypted_content = StoredContent(
@@ -109,4 +121,3 @@ async def create_encrypted_content(
     return encrypted_content
 
 
-