fix: Workflow path is enumerated, but does not exist any longer (#4)

* fix: Workflow path is enumerated, but does not exist any longer

When workflow definition files are deleted, but had runs in the past,
the GitHub API still enumerates them as if they would exist. In reality,
however, they are gone.

This detail, however, only becomes apparent when accessing the workflow,
so this patch compensates for corresponding 404 errors returned by the
API.

* chore: Update .gitignore

Author: amotl

.gitignore

@@ -1,3 +1,4 @@
 .idea
 .venv
 dist
+__pycache__

gha_cli/cli.py

@@ -118,9 +118,12 @@ def get_repo_workflow_names(self, repo_name: str) -> Dict[str, str]:
         workflow_paths = self._get_github_workflow_filenames(repo_name)
         res = dict()
         for path in workflow_paths:
-            content = self._get_workflow_file_content(repo_name, path)
-            yaml_content = yaml.load(content, Loader=yaml.CLoader)
-            res[path] = yaml_content.get('name', path)
+            try:
+                content = self._get_workflow_file_content(repo_name, path)
+                yaml_content = yaml.load(content, Loader=yaml.CLoader)
+                res[path] = yaml_content.get('name', path)
+            except FileNotFoundError as ex:
+                logging.warning(ex)
         return res
 
     def update_actions(
@@ -192,7 +195,10 @@ def _get_workflow_file_content(self, repo_name: str, workflow_path: str) -> Unio
                 f'f{workflow_path} not found in workflows for repository {repo_name}, '
                 f'possible values: {workflow_paths}', err=True)
         repo = self.client.get_repo(repo_name)
-        workflow_content = repo.get_contents(workflow_path)
+        try:
+            workflow_content = repo.get_contents(workflow_path)
+        except UnknownObjectException:
+            raise FileNotFoundError(f'Workflow not found in repository: {repo_name}, path: {workflow_path}')
         return workflow_content.decoded_content