Add Discord webhook refresh notifications

http_handler.py

@@ -28,6 +28,7 @@ from app_support import (
     remote_access_allowed,
     remote_access_token_configured,
     remote_access_token_matches,
+    send_discord_webhook_event,
 )
 
 @dataclass(frozen=True)
@@ -45,6 +46,7 @@ class HandlerContext:
     runtime_state: object
     save_runtime_config: object
     search_anime: object
+    test_discord_webhook_config: object
     thumbnail_file_path: object
     update_all_watchlist_statuses: object
     update_watchlist_category: object
@@ -278,6 +280,9 @@ class Handler(BaseHTTPRequestHandler):
             self.ensure_client_access()
             if parsed.path == "/api/config":
                 Handler.update_config(self, Handler.require_json_object(self, self.body_json()))
+            elif parsed.path == "/api/config/webhook/test":
+                payload = Handler.require_json_object(self, self.body_json())
+                self.json(Handler._context(self).test_discord_webhook_config(payload))
             elif parsed.path == "/api/queue":
                 runtime = Handler._runtime(self)
                 self.json(runtime["download_queue"].add(self.body_json()), HTTPStatus.CREATED)
@@ -465,6 +470,18 @@ class Handler(BaseHTTPRequestHandler):
                 traceback.print_exc()
             else:
                 debug_log("handler.exception", path=getattr(self, "path", ""), error=exc)
+            try:
+                send_discord_webhook_event(
+                    Handler._context(self).get_config_snapshot(),
+                    "runtime_error",
+                    {
+                        "source": "http_handler",
+                        "error": str(exc),
+                        "details": f"path={getattr(self, 'path', '')}",
+                    },
+                )
+            except Exception as notify_exc:
+                debug_log("discord_webhook.runtime_error_failed", source="http_handler", error=notify_exc)
             self.error(HTTPStatus.INTERNAL_SERVER_ERROR, "Internal server error.")
 
     def log_message(self, fmt, *args):