defmodule DaProductApp.Application do
  # See https://hexdocs.pm/elixir/Application.html
  # for more information on OTP Applications
  @moduledoc false
  use Application

  @impl true
  def start(_type, _args) do
    children = [
      DaProductApp.DeviceRegistry,
      # Global settings cache (loads global_table once and refreshes periodically)
      # DaProductApp.GlobalSettings,
      # Existing children (keep all these)
      DaProductAppWeb.Telemetry,
      DaProductApp.Repo,
      DaProductApp.Repos.ShukriaMmsRepo,
      # Global settings cache (loads global_table once and refreshes periodically)
      DaProductApp.GlobalSettings,
      DaProductApp.TransactionRuleCache,
      # Prometheus metrics collector: attaches to HTTP/Ecto/payment/external-API
      # telemetry events, served via GET /monitoring/metrics
      DaProductApp.Telemetry.MetricsCollector,
      {DNSCluster, query: Application.get_env(:da_product_app, :dns_cluster_query) || :ignore},
      {Phoenix.PubSub, name: DaProductApp.PubSub},
      {Finch, name: DaProductApp.Finch},
      {Cachex, name: :general_cache},
      TwMerge.Cache,

      # NEW: Add Ranch TCP listener for ISO8583
      # {DaProductApp.TCP.Supervisor, [port: 5000]},  # Customize port if needed

      # Start MQTT client supervisor
      {DaProductApp.MQTT.Supervisor, []},
      # Ensure the client is started at boot:
      {Task, fn -> DaProductApp.MQTT.start_phoenix_client() end},

      # Start Phoenix Endpoint (Bandit is configured here later)
      DaProductAppWeb.Endpoint
    ]

    # See https://hexdocs.pm/elixir/Supervisor.html
    # for other strategies and supported options
    opts = [strategy: :one_for_one, name: DaProductApp.Supervisor]
    Supervisor.start_link(children, opts)
  end

  # Tell Phoenix to update the endpoint configuration
  # whenever the application is updated.
  @impl true
  def config_change(changed, _new, removed) do
    DaProductAppWeb.Endpoint.config_change(changed, removed)
    :ok
  end

  defp oban_config do
    %{
      name: Oban,
      repo: DaProductApp.Repo,
      # Use Basic Engine instead of Postgres
      engine: Oban.Engines.Basic,
      # Define your queues
      queues: [default: 10],
      # Disable PostgreSQL-based notifier
      notifier: Oban.Notifiers.Null,
      # Disable peer tracking (Postgres-only feature)
      peer: false
    }
  end

  # defp oban_config do
  #   Application.fetch_env!(:da_product_app, Oban)
  # end
end