workload-service/lib/workload_service/handlers/task_completed_handler.ex

defmodule WorkloadService.Handlers.TaskCompletedHandler do
  use Commanded.Event.Handler,
    application: WorkloadService.CommandedApp,
    name: "TaskCompletedHandler"

  require Logger

  alias WorkloadService.Events.TaskCompleted
  alias Commanded.Aggregates.Aggregate
  alias WorkloadService.MessageBus

  alias WorkloadService.Aggregates.{
    QuoteTask,
    SolicitationTask
  }

  def handle(%TaskCompleted{} = event, _metadata) do
    aggregate_module =
      case event.id.type do
        "quote" -> {:ok, QuoteTask}
        # "solicitation" -> SolicitationTask
        _ -> {:error, "aggregate module not found for event type #{event.id}"}
      end

    case aggregate_module do
      {:error, reason} ->
        {:error, reason}

      {:ok, module} ->
        case Aggregate.aggregate_state(
               WorkloadService.CommandedApp,
               module,
               event.id
             ) do
          nil ->
            Logger.warning("TaskCompletedHandler: aggregate not found for #{event.id}")

          state ->
            MessageBus.publish(
              "workload_service.events.quote_task_completed",
              "quote_task.completed",
              state
            )

            Logger.info("TaskCompletedHandler: published for #{event.id}")
        end
    end
  end
end