fix: ignore bot events

Author: zcesur

lib/algora_web/controllers/webhooks/github_controller.ex

@@ -16,9 +16,13 @@ defmodule AlgoraWeb.Webhooks.GithubController do
 
   def new(conn, params) do
     with {:ok, webhook} <- Webhook.new(conn),
+         :ok <- ensure_human_author(webhook, params),
          {:ok, _} <- process_commands(webhook, params) do
       conn |> put_status(:accepted) |> json(%{status: "ok"})
     else
+      {:error, :bot_event} ->
+        conn |> put_status(:ok) |> json(%{status: "ok"})
+
       {:error, :missing_header} ->
         conn |> put_status(:bad_request) |> json(%{error: "Missing header"})
 
@@ -35,6 +39,13 @@ defmodule AlgoraWeb.Webhooks.GithubController do
       conn |> put_status(:internal_server_error) |> json(%{error: "Internal server error"})
   end
 
+  defp ensure_human_author(%Webhook{event: event}, params) do
+    case get_author(event, params) do
+      %{"type" => "Bot"} -> {:error, :bot_event}
+      _ -> :ok
+    end
+  end
+
   # TODO: cache installation tokens
   # TODO: check org permissions on algora
   defp get_permissions(author, %{"repository" => repository, "installation" => installation}) do