feat(vcs): allow overriding provider config via a dictionary

Author: palkerecsenyi

invenio_vcs/config.py

@@ -0,0 +1,76 @@
+# -*- coding: utf-8 -*-
+# This file is part of Invenio.
+# Copyright (C) 2025 CERN.
+#
+# Invenio is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
+"""You can use these options to configure the Invenio-VCS module.
+
+Other than ``VCS_PROVIDERS``, they are all optional and configured with reasonable defaults.
+"""
+
+from typing import TYPE_CHECKING
+
+from flask import current_app
+
+if TYPE_CHECKING:
+    from invenio_vcs.providers import RepositoryServiceProviderFactory
+
+VCS_PROVIDERS = []
+"""The list of RepositoryProviderFactory instances.
+
+These will be visible to the user in their settings and they will be able to sync repositories
+from all of them. Multiple instances of different providers as well as of the same provider
+can be combined in this list, but each provider must have a unique ``id`` and ``credentials_key``.
+"""
+
+VCS_PROVIDER_CONFIG_DICT = {}
+"""An optional dictionary of configuration overrides for RepositoryProviderFactory instances.
+
+This makes it possible to specify configuration values via environment variables rather than as
+class constructor parameters, allowing for easier secret setting.
+"""
+
+VCS_RELEASE_CLASS = "invenio_vcs.service:VCSRelease"
+"""VCSRelease class to be used for release handling."""
+
+VCS_TEMPLATE_INDEX = "invenio_vcs/settings/index.html"
+"""Repositories list template."""
+
+VCS_TEMPLATE_VIEW = "invenio_vcs/settings/view.html"
+"""Repository detail view template."""
+
+VCS_ERROR_HANDLERS = None
+"""Definition of the way specific exceptions are handled."""
+
+VCS_MAX_CONTRIBUTORS_NUMBER = 30
+"""Max number of contributors of a release to be retrieved from vcs."""
+
+VCS_CITATION_FILE = None
+"""Citation file name."""
+
+VCS_CITATION_METADATA_SCHEMA = None
+"""Citation metadata schema."""
+
+VCS_ZIPBALL_TIMEOUT = 300
+"""Timeout for the zipball download, in seconds."""
+
+
+def get_provider_list(app=current_app) -> list["RepositoryServiceProviderFactory"]:
+    """Get a list of configured VCS provider factories."""
+    return app.config["VCS_PROVIDERS"]
+
+
+def get_provider_by_id(id: str) -> "RepositoryServiceProviderFactory":
+    """Get a specific VCS provider by its registered ID."""
+    providers = get_provider_list()
+    for provider in providers:
+        if id == provider.id:
+            return provider
+    raise Exception(f"VCS provider with ID {id} not registered")
+
+
+def get_provider_config_override(id: str, app=current_app) -> dict:
+    """Get the config override dict for a provider by ID, or an empty dictionary by default."""
+    return app.config["VCS_PROVIDER_CONFIG_DICT"].get(id, {})