defmodule NotificationDispatcher.Sender do
  @minute 60000
  def send_message(channel_name, message, offset) do
    options = [
      host: Application.fetch_env!(:notification_dispatcher, :rabbitmq_host),
      port: 5672,
      virtual_host: "/",
      username: Application.fetch_env!(:notification_dispatcher, :rabbitmq_username),
      password: Application.fetch_env!(:notification_dispatcher, :rabbitmq_password)
    ]
    {:ok, amqpconn} = AMQP.Connection.open(options)
    {:ok, chan} = AMQP.Channel.open(amqpconn)

    headers = [{"x-delay", :long, @minute * offset}]

    AMQP.Basic.publish(
      chan,
      channel_name,
      "",
      message,
      persistent: true,
      headers: headers
    )
    AMQP.Connection.close(amqpconn)
  end
end