defmodule Integrations.Tcp.Display do
  @moduledoc """
  Dashboard panel for `Integrations.Tcp` (same package).

  Nested under the monitor's own namespace deliberately — the package's
  top-level module name never changes, and this module's name is
  guaranteed distinct from any separately-published standalone display
  package. `Display.BundledDefault` auto-hooks this whenever
  `Integrations.Tcp` starts, the same as if they were still one module.
  """

  use CodeNameRaven.Display, category: :infrastructure, size_hint: :small

  @impl true
  def display_name, do: "TCP Port"

  @impl true
  def compatible_monitors, do: [Integrations.Tcp]

  @impl true
  def render(assigns) do
    result = assigns[:result]
    assigns = Map.merge(assigns, %{result: result})

    ~H"""
    <div class="space-y-3">
      <div class="flex items-start justify-between gap-2">
        <div class="min-w-0">
          <h2 class="text-sm font-semibold text-base-content truncate">
            <%= @config.name || host_port(@config.params) %>
          </h2>
          <p class="text-xs font-mono text-base-content/40 truncate">
            <%= host_port(@config.params) %>
          </p>
        </div>
        <CodeNameRaven.MonitorComponents.status_chip status={@status} />
      </div>

      <div :if={@result} class="flex gap-2 flex-wrap">
        <CodeNameRaven.MonitorComponents.stat
          label="Latency"
          value={"#{@result.latency_ms} ms"} />
      </div>

      <CodeNameRaven.MonitorComponents.error_message message={@last_error} />
      <CodeNameRaven.MonitorComponents.check_time checked_at={@last_checked_at} />
    </div>
    """
  end

  # ---------------------------------------------------------------------------
  # Helpers
  # ---------------------------------------------------------------------------

  defp host_port(params) do
    host = params[:host] || params["host"] || "?"
    port = params[:port] || params["port"] || "?"
    "#{host}:#{port}"
  end
end