If only Discord were this easy

discord.ex

defmodule Discord do
    def send_message(%Message{} = message) do
        with :ok <- validate_message(message),
             :ok <- save_message(message) do
          broadcast_message(message)
        end
    end
    
    defp validate_message(message) do
        with :ok <- validate_author_is_member(message),
             :ok <- validate_message_length(message),
             :ok <- validate_slowmode(message) do
          :ok
        end
    end
    
    defp save_message(message) do
        DurableStorage.save(message)
    end
    
    defp broadcast_message(message) do
        message.channel
        |> Channel.recipients()
        |> Enum.each(&send(&1, {:message, message}))
    end
end