defmodule LineMessage.EventHandle do
  use Maru.Router
  plug Plug.Logger
  plug Plug.Parsers, parsers: [:json],
    json_decoder: Poison

  get "/" do
    conn |> text("OK")
  end

  params do
    requires :events, type: List do
      requires :replyToken
      requires :type
      optional :timestamp
      requires :source, type: Map do
	requires :type
	requires :userId
      end
      requires :message, type: Map do
	requires :id
	requires :type
	optional :text
      end
    end
  end
  
  post "/" do
    [event|_] = params[:events]
    IO.puts "ReplyToken: " <> event[:replyToken]
    handle_events(params[:events])
    conn |> text("OK")
  end
  
  def handle_events([]), do: {:ok}
  def handle_events([event|t]) do
    handle_event(event[:type], event[:replyToken], event[:message])
    handle_events(t)
  end

  def handle_event("message", replyToken, message) do
    eventHandler = Application.get_env(:line_message, :eventHandler)
    eventHandler.handle_message(replyToken, message)
  end  
  def handle_event("beacon", replyToken, message) do
    eventHandler = Application.get_env(:line_message, :eventHandler)
    eventHandler.handle_beacon(replyToken, message)
  end
  
end