fix topic sync

src/forgesync/cli.py

@@ -135,10 +135,15 @@ def main() -> None:
         if repo.fork or repo.mirror or repo.private:
             continue
 
-        if repo.name is None:
+        if repo.owner is None or repo.owner.login is None or repo.name is None:
             logger.fatal("Could not get name of Forgejo repository")
             exit(1)
 
+        topics_list = from_client.repository.repo_list_topics(
+            owner=repo.owner.login,
+            repo=repo.name,
+        )
+
         if args.filter is not None:
             pattern = compile(args.filter)
             if pattern.search(repo.name) is not None:
@@ -150,7 +155,11 @@ def main() -> None:
         )
 
         try:
-            synced_repo = syncer.sync(from_repo=repo, description=description)
+            synced_repo = syncer.sync(
+                from_repo=repo,
+                description=description,
+                topics=topics_list.topics if topics_list.topics is not None else [],
+            )
         except SyncError as error:
             logger.fatal("Syncing failed: %s", error)
             exit(2)

src/forgesync/forgejo.py

@@ -37,6 +37,7 @@ class ForgejoSyncer(Syncer):
         self: Self,
         from_repo: ForgejoRepository,
         description: str,
+        topics: list[str],
     ) -> SyncedRepository:
         assert from_repo.name is not None
         self.logger.info("Synchronizing %s", from_repo.name)
@@ -79,8 +80,6 @@ class ForgejoSyncer(Syncer):
             wiki_branch=from_repo.wiki_branch,
         )
 
-        self.logger.info("Updated Forgejo repository %s", edited_repo.full_name)
-
         if (
             edited_repo.owner is None
             or edited_repo.owner.login is None
@@ -91,6 +90,14 @@ class ForgejoSyncer(Syncer):
         ):
             raise SyncError("received malformed Forgejo repository")
 
+        self.client.repository.repo_update_topics(
+            owner=edited_repo.owner.login,
+            repo=edited_repo.name,
+            topics=topics,
+        )
+
+        self.logger.info("Updated Forgejo repository %s", edited_repo.full_name)
+
         return SyncedRepository(
             new_owner=edited_repo.owner.login,
             orig_owner=from_repo.owner.login,

src/forgesync/github.py

@@ -52,6 +52,7 @@ class GithubSyncer(Syncer):
         self: Self,
         from_repo: ForgejoRepository,
         description: str,
+        topics: list[str],
     ) -> SyncedRepository:
         if from_repo.name is None:
             raise SyncError("could not get Forgejo repository name")
@@ -140,7 +141,7 @@ class GithubSyncer(Syncer):
 
         self.logger.info("Updated GitHub repository %s", repo.full_name)
 
-        repo.replace_topics(from_repo.topics if from_repo.topics is not None else [])
+        repo.replace_topics(topics=topics)
 
         self.logger.info("Replaced topics on GitHub repository %s", repo.full_name)
 

src/forgesync/sync.py

@@ -23,7 +23,10 @@ class SyncedRepository:
 class Syncer(ABC):
     @abstractmethod
     def sync(
-        self: Self, from_repo: ForgejoRepository, description: str
+        self: Self,
+        from_repo: ForgejoRepository,
+        description: str,
+        topics: list[str],
     ) -> SyncedRepository:
         pass