defmodule Towerops.Snmp.Profiles.Vendors.CnmatrixTest do
  use Towerops.DataCase, async: true

  import Mox

  alias Towerops.Snmp.Profiles.Vendors.Cnmatrix
  alias Towerops.Snmp.SnmpMock

  setup :verify_on_exit!

  @client_opts [
    ip: "192.168.1.1",
    community: "public",
    version: "2c",
    port: 161,
    timeout: 5000
  ]

  describe "profile_names/0" do
    test "returns cnmatrix profile name" do
      assert Cnmatrix.profile_names() == ["cnmatrix"]
    end
  end

  describe "detect_hardware/1" do
    test "detects hardware from model OID" do
      expect(SnmpMock, :get, fn _, "1.3.6.1.4.1.17713.24.1.1.1.0", _ ->
        {:ok, "cnMatrix EX2028"}
      end)

      assert Cnmatrix.detect_hardware(@client_opts) == "cnMatrix EX2028"
    end

    test "returns nil when OID unavailable" do
      expect(SnmpMock, :get, fn _, _, _ ->
        {:error, :no_such_object}
      end)

      assert Cnmatrix.detect_hardware(@client_opts) == nil
    end
  end

  describe "wireless_oid_defs/0" do
    test "returns list of sensor definitions" do
      defs = Cnmatrix.wireless_oid_defs()

      assert is_list(defs)
      assert [_ | _] = defs
    end

    test "includes CPU utilization sensor" do
      defs = Cnmatrix.wireless_oid_defs()
      cpu = Enum.find(defs, &(&1.sensor_descr == "CPU Utilization"))

      assert cpu
      assert cpu.sensor_type == "load"
      assert cpu.sensor_unit == "%"
    end

    test "includes temperature sensor" do
      defs = Cnmatrix.wireless_oid_defs()
      temp = Enum.find(defs, &(&1.sensor_type == "temperature"))

      assert temp
      assert temp.sensor_descr == "System Temperature"
    end

    test "includes PoE power sensor" do
      defs = Cnmatrix.wireless_oid_defs()
      poe = Enum.find(defs, &(&1.sensor_descr == "Total PoE Power"))

      assert poe
      assert poe.sensor_type == "power"
    end
  end

  describe "discover_wireless_sensors/1" do
    test "discovers sensors when SNMP responds" do
      expect(SnmpMock, :get, 5, fn _, oid, _ ->
        cond do
          String.contains?(oid, "17713.24.2.1.0") -> {:ok, 35}
          String.contains?(oid, "17713.24.2.2.0") -> {:ok, 68}
          String.contains?(oid, "17713.24.3.1.0") -> {:ok, 42}
          String.contains?(oid, "17713.24.3.2.0") -> {:ok, 3500}
          String.contains?(oid, "17713.24.4.1.0") -> {:ok, 75_000}
          true -> {:error, :no_such_object}
        end
      end)

      sensors = Cnmatrix.discover_wireless_sensors(@client_opts)

      assert is_list(sensors)
      assert length(sensors) == 5
    end

    test "returns empty list when no sensors respond" do
      expect(SnmpMock, :get, 5, fn _, _, _ ->
        {:error, :no_such_object}
      end)

      sensors = Cnmatrix.discover_wireless_sensors(@client_opts)

      assert sensors == []
    end
  end
end
