defmodule EventRelay do
  @moduledoc """
  Documentation for `EventRelay`.
  """
  require Logger
  alias ERWeb.Grpc.Eventrelay.Events.Stub
  alias EventRelay.Context
  alias EventRelay.Event

  def channel(opts) do
    EventRelay.Channel.new(opts)
  end

  def call(func, context, topic, args) do
    apply(__MODULE__, func, [context, topic, args])
  end

  def publish_events(%Context{channel: channel} = _context, topic, events) do
    events =
      Enum.map(events, fn event ->
        event = Event.encode_data(event)
        struct(ERWeb.Grpc.Eventrelay.NewEvent, event)
      end)

    request = %ERWeb.Grpc.Eventrelay.PublishEventsRequest{
      topic: topic,
      durable: true,
      events: events
    }

    Client.publish_events(channel, request)
  end

  def pull_queued_events(channel, subscription_id, batch_size) do
    request = %ERWeb.Grpc.Eventrelay.PullQueuedEventsRequest{
      subscription_id: subscription_id,
      batch_size: batch_size
    }

    Stub.pull_queued_events(channel, request)
  end
end