class Conversations::MessagesController < ApplicationController
  before_action :set_conversation

  def index
    @messages = paginated_messages(@conversation.messages)
  end

  def create
    if @conversation.ask(question, **message_params)
      head :ok
    else
      head :unprocessable_entity
    end
  end

  private
    def set_conversation
      @conversation = Current.user.conversation
    end

    def paginated_messages(messages)
      if params[:before]
        messages.page_before(messages.find(params[:before]))
      else
        messages.last_page
      end
    end

    def question
      params.dig(:conversation_message, :content)
    end

    def message_params
      params.require(:conversation_message).permit(:client_message_id)
    end
end