Implement video message configuration

* Config is update when new key is added (always fully explicit)

breadtube_bot/discord_manager.py

@@ -30,6 +30,7 @@ class ApiEncoder(json.JSONEncoder):
 
 class DiscordManager:
     MIN_API_VERSION = 9
+    TOO_MANY_REQUEST_STATUS = 429
 
     @dataclass
     class RateLimit:
@@ -88,15 +89,31 @@ class DiscordManager:
         else:
             request.add_header('Content-Type', 'application/json')
         request.add_header('Authorization', f'Bot {self._bot_token}')
-        try:
+
+        def _request() -> tuple[int, dict, bytes | None]:
+            nonlocal request, request_timeout
             with urllib.request.urlopen(request, timeout=request_timeout) as response:
-                if response.status != expected_code:
-                    raise RuntimeError(
-                        f'Unexpected code {response.status} (expected: {expected_code}) -> {response.read().decode()}')
-                body = response.read()
                 headers = dict(response.getheaders())
+                return response.status, headers, response.read()
+
+        try:
+            body = b''
+            try:
+                status, headers, body = _request()
+            except urllib.error.HTTPError as error:
+                if error.status != self.TOO_MANY_REQUEST_STATUS:
+                    raise error
+                status = error.status
+                headers = dict(error.headers)
+
+            self._update_rate_limit(headers)
+            if status == self.TOO_MANY_REQUEST_STATUS:
+                self._logger.warning('Warning: too many request -> retrying')
+                status, headers, body = _request()
                 self._update_rate_limit(headers)
-                return headers, json.loads(body.decode()) if body else None
+            if status != expected_code:
+                raise RuntimeError(f'Unexpected code {status} (expected: {expected_code}) -> {body}')
+            return headers, json.loads(body.decode()) if body else None
         except urllib.error.HTTPError as error:
             raise RuntimeError(
                 f'HTTP error calling API ({url}): {error}:\nHeaders:\n{error.headers}Body:\n{error.read()}') from error