old_contents: 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.webhooks.common import check_send_webhook_message
  from zerver.models import UserProfile
  
  APPVEYOR_TOPIC_TEMPLATE = "{project_name}"
  APPVEYOR_MESSAGE_TEMPLATE = """
  [Build {project_name} {build_version} {status}]({build_url}):
  * **Commit**: [{commit_id}: {commit_message}]({commit_url}) by {committer_name}
  * **Started**: {started}
  * **Finished**: {finished}
  """.strip()
  
  
  @webhook_view("Appveyor")
  @has_request_variables
  def api_appveyor_webhook(
      request: HttpRequest,
      user_profile: UserProfile,
      payload: Dict[str, Any] = REQ(argument_type="body"),
  ) -> HttpResponse:
  
      body = get_body_for_http_request(payload)
      subject = get_subject_for_http_request(payload)
  
      check_send_webhook_message(request, user_profile, subject, body)
      return json_success(request)
  
  
  def get_subject_for_http_request(payload: Dict[str, Any]) -> str:
      event_data = payload["eventData"]
      return APPVEYOR_TOPIC_TEMPLATE.format(project_name=event_data["projectName"])
  
  
  def get_body_for_http_request(payload: Dict[str, Any]) -> str:
      event_data = payload["eventData"]
  
      data = {
          "project_name": event_data["projectName"],
          "build_version": event_data["buildVersion"],
          "status": event_data["status"],
          "build_url": event_data["buildUrl"],
          "commit_url": event_data["commitUrl"],
          "committer_name": event_data["committerName"],
          "commit_date": event_data["commitDate"],
          "commit_message": event_data["commitMessage"],
          "commit_id": event_data["commitId"],
          "started": event_data["started"],
          "finished": event_data["finished"],
      }
      return APPVEYOR_MESSAGE_TEMPLATE.format(**data)
  
new_contents: 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
  
  APPVEYOR_TOPIC_TEMPLATE = "{project_name}"
  APPVEYOR_MESSAGE_TEMPLATE = """
  [Build {project_name} {build_version} {status}]({build_url}):
  * **Commit**: [{commit_id}: {commit_message}]({commit_url}) by {committer_name}
  * **Started**: {started}
  * **Finished**: {finished}
  """.strip()
  
  
  @webhook_view("Appveyor")
  @has_request_variables
  def api_appveyor_webhook(
      request: HttpRequest,
      user_profile: UserProfile,
      payload: WildValue = REQ(argument_type="body", converter=to_wild_value),
  ) -> HttpResponse:
  
      body = get_body_for_http_request(payload)
      subject = get_subject_for_http_request(payload)
  
      check_send_webhook_message(request, user_profile, subject, body)
      return json_success(request)
  
  
  def get_subject_for_http_request(payload: WildValue) -> str:
      event_data = payload["eventData"]
      return APPVEYOR_TOPIC_TEMPLATE.format(project_name=event_data["projectName"].tame(check_string))
  
  
  def get_body_for_http_request(payload: WildValue) -> str:
      event_data = payload["eventData"]
  
      data = {
          "project_name": event_data["projectName"].tame(check_string),
          "build_version": event_data["buildVersion"].tame(check_string),
          "status": event_data["status"].tame(check_string),
          "build_url": event_data["buildUrl"].tame(check_string),
          "commit_url": event_data["commitUrl"].tame(check_string),
          "committer_name": event_data["committerName"].tame(check_string),
          "commit_date": event_data["commitDate"].tame(check_string),
          "commit_message": event_data["commitMessage"].tame(check_string),
          "commit_id": event_data["commitId"].tame(check_string),
          "started": event_data["started"].tame(check_string),
          "finished": event_data["finished"].tame(check_string),
      }
      return APPVEYOR_MESSAGE_TEMPLATE.format(**data)
  
subject: Strengthen types using WildValue.