wekan: Strengthen types using WildValue.

zerver/webhooks/wekan/view.py

@@ -1,10 +1,9 @@
-from typing import Any, Dict
-
 from django.http import HttpRequest, HttpResponse
 
 from zerver.decorator import webhook_view
 from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
+from zerver.lib.validator import WildValue, check_string, to_wild_value
 from zerver.lib.webhooks.common import check_send_webhook_message
 from zerver.models import UserProfile
 
@@ -26,15 +25,15 @@ def clean_payload_text(text: str) -> str:
     return text.replace(url, "").replace("\n", "")
 
 
-def get_message_body(payload: Dict[str, Any], action: str) -> str:
-    footer = get_hyperlinked_url(payload["text"])
-    body = process_message_data(payload, action)
+def get_message_body(payload: WildValue) -> str:
+    footer = get_hyperlinked_url(payload["text"].tame(check_string))
+    body = process_message_data(payload)
     return MESSAGE_TEMPLATE.format(body=body, footer=footer)
 
 
-def process_message_data(payload: Dict[str, Any], action: str) -> str:
-    payload["text"] = clean_payload_text(payload["text"])
-    return "{text}.".format(**payload)
+def process_message_data(payload: WildValue) -> str:
+    text = clean_payload_text(payload["text"].tame(check_string))
+    return f"{text}."
 
 
 @webhook_view("Wekan")
@@ -42,9 +41,9 @@ def process_message_data(payload: Dict[str, Any], action: str) -> str:
 def api_wekan_webhook(
     request: HttpRequest,
     user_profile: UserProfile,
-    payload: Dict[str, Any] = REQ(argument_type="body"),
+    payload: WildValue = REQ(argument_type="body", converter=to_wild_value),
 ) -> HttpResponse:
     topic = "Wekan Notification"
-    body = get_message_body(payload, payload["description"])
+    body = get_message_body(payload)
     check_send_webhook_message(request, user_profile, topic, body)
     return json_success(request)