Show full Wikipedia 429 error message

web_view.py

@@ -37,6 +37,17 @@ class Hit(typing.TypedDict):
     timestamp: str
 
 
+def render_error(message: str) -> str:
+    """Render shared error page."""
+    return flask.render_template("error.html", message=message)
+
+
+def render_mediawiki_error(error: Exception, *, prefix: str | None = None) -> str:
+    """Render MediaWiki errors."""
+    message = f"{prefix}: {error}" if prefix else str(error)
+    return render_error(message)
+
+
 def load_examples() -> list[dict[str, str | int]]:
     """Load examples."""
     return [json.loads(line) for line in open("examples")]
@@ -203,7 +214,7 @@ def start_oauth() -> Response:
         fetch_response = oauth.fetch_request_token(request_token_url)
     except TokenRequestDenied as e:
         return flask.make_response(
-            flask.render_template("error.html", message=str(e)), 502
+            render_error(str(e)), 502
         )
 
     flask.session["owner_key"] = fetch_response.get("oauth_token")
@@ -325,7 +336,7 @@ def handle_post(url_title: str) -> Response:
         return flask.redirect(flask.url_for("start_oauth", next=next_url))
     except (mediawiki_api.APIError, api.MediawikiError) as e:
         return flask.make_response(
-            flask.render_template("error.html", message=f"Save failed: {e}"), 502
+            render_mediawiki_error(e, prefix="Save failed"), 502
         )
     flask.session["saves"] = flask.session.get("saves", 0) + 1
     saves_by_title: dict[str, int] = flask.session.get("saves_by_title", {})
@@ -357,7 +368,7 @@ def article_page(url_title: str) -> str | Response:
         _no_link_count, hits = search_no_link(from_title, redirect_to)
     except api.MediawikiError as e:
         return flask.make_response(
-            flask.render_template("error.html", message=str(e)), 502
+            render_mediawiki_error(e), 502
         )
 
     # Filter out candidates already processed this session